Re: [PATCH 4/6] libstdc++: Update AC_LANG_{SAVE,RESTORE} to AC_LANG_{PUSH,POP} [PR103459]

[Jonathan Wakely]

On Wed, 24 Jun 2026 at 22:58 -0400, Pietro Monteiro wrote:

AC_LANG_SAVE, AC_LANG_C, AC_LANG_CPLUSPLUS, and AC_LANG_RESTORE have
been deprecated by Autoconf.  Update with AC_LANG_PUSH and
AC_LANG_POP.

Are we missing a POP in crossconfig.m4? That's pre-existing anyway, so
doesn't need to be done in this patch.

I still think there would be value in my GLIBCXX_LANG_PUSH/POP which
would save/restore the CXXFLAGS and LIBS as well, but this is a step
towards that and is an incremental improvement.

OK for trunk, thanks.

        PR bootstrap/103459

libstdc++-v3/ChangeLog:

        * acinclude.m4 (GLIBCXX_CHECK_COMPILER_FEATURES): Replace
        AC_LANG_SAVE AC_LANG_CPLUSPLUS (...) AC_LANG_RESTORE with
        AC_LANG_PUSH([C++]) (...) AC_LANG_POP([C++]).
        (GLIBCXX_CHECK_SETRLIMIT): Likewise.
        (GLIBCXX_CHECK_S_ISREG_OR_S_IFREG): Likewise.
        (GLIBCXX_CHECK_POLL): Likewise.
        (GLIBCXX_CHECK_WRITEV): Likewise.
        (GLIBCXX_CHECK_LFS): Likewise.
        (GLIBCXX_ENABLE_C99): Likewise.
        (GLIBCXX_ENABLE_LIBSTDCXX_TIME): Likewise.
        (GLIBCXX_CHECK_GETTIMEOFDAY): Likewise.
        (GLIBCXX_CHECK_C99_TR1): Likewise.
        (GLIBCXX_CHECK_UCHAR_H): Likewise.
        (GLIBCXX_CHECK_STDIO_PROTO): Likewise.
        (GLIBCXX_CHECK_MATH11_PROTO): Likewise.
        (GLIBCXX_ENABLE_FLOAT128): Likewise.
        (GLIBCXX_ENABLE_WCHAR_T): Likewise.
        (GLIBCXX_ENABLE_PCH): Likewise.
        (GLIBCXX_ENABLE_ATOMIC_BUILTINS): Likewise.
        (GLIBCXX_ENABLE_LOCK_POLICY): Likewise.
        (GLIBCXX_CHECK_GTHREADS): Likewise.
        (GLIBCXX_CHECK_GET_NPROCS): Likewise.
        (GLIBCXX_CHECK_SC_NPROCESSORS_ONLN): Likewise.
        (GLIBCXX_CHECK_SC_NPROC_ONLN): Likewise.
        (GLIBCXX_CHECK_PTHREADS_NUM_PROCESSORS_NP): Likewise.
        (GLIBCXX_CHECK_PTHREAD_COND_CLOCKWAIT): Likewise.
        (GLIBCXX_CHECK_PTHREAD_MUTEX_CLOCKLOCK): Likewise.
        (GLIBCXX_CHECK_PTHREAD_RWLOCK_CLOCKLOCK): Likewise.
        (GLIBCXX_CHECK_SYSCTL_HW_NCPU): Likewise.
        (GLIBCXX_CHECK_TMPNAM): Likewise.
        (GLIBCXX_CHECK_SDT_H): Likewise.
        (GLIBCXX_CHECK_FILESYSTEM_DEPS): Likewise.
        (GLIBCXX_CHECK_GETENTROPY): Likewise.
        (GLIBCXX_CHECK_ARC4RANDOM): Likewise.
        (GLIBCXX_ENABLE_BACKTRACE): Likewise.
        (GLIBCXX_STRUCT_TM_TM_ZONE): Likewise.
        (GLIBCXX_CHECK_ALIGNAS_CACHELINE): Likewise.
        (GLIBCXX_CHECK_INIT_PRIORITY): Likewise.
        (GLIBCXX_CHECK_FILEBUF_NATIVE_HANDLES): Likewise.
        (GLIBCXX_CHECK_TEXT_ENCODING): Likewise.
        (GLIBCXX_CHECK_DEBUGGING): Likewise.
        (GLIBCXX_CHECK_STDIO_LOCKING): Likewise.
        * configure: Regenerate.
        * crossconfig.m4 (GLIBCXX_CHECK_MATH_DECL): Replace
        AC_LANG_SAVE AC_LANG_C with AC_LANG_PUSH([C]).
        * linkage.m4 (GLIBCXX_CHECK_MATH_DECL_1): Replace
        AC_LANG_SAVE AC_LANG_CPLUSPLUS (...) AC_LANG_RESTORE with
        AC_LANG_PUSH([C++]) (...) AC_LANG_POP([C++]).
        (GLIBCXX_CHECK_MATH_DECLS_AND_LINKAGES_1) Likewise.
        (GLIBCXX_CHECK_MATH_DECL_2): Likewise.
        (GLIBCXX_CHECK_MATH_DECL_3): Likewise.
        (GLIBCXX_CHECK_STDLIB_DECL_AND_LINKAGE_1): Likewise.
        (GLIBCXX_CHECK_STDLIB_DECL_AND_LINKAGE_2): Likewise.
        (GLIBCXX_CHECK_STDLIB_DECL_AND_LINKAGE_3): Likewise.

Signed-off-by: Pietro Monteiro <pie...@sociotechnical.xyz>
---
libstdc++-v3/acinclude.m4   | 205 +++++++----------
libstdc++-v3/configure      | 438 +-----------------------------------
libstdc++-v3/crossconfig.m4 |   3 +-
libstdc++-v3/linkage.m4     |  35 ++-
4 files changed, 101 insertions(+), 580 deletions(-)

diff --git a/libstdc++-v3/acinclude.m4 b/libstdc++-v3/acinclude.m4
index 87892199259..a444a3b649c 100644
--- a/libstdc++-v3/acinclude.m4
+++ b/libstdc++-v3/acinclude.m4
@@ -139,8 +139,7 @@ AC_DEFUN([GLIBCXX_CHECK_COMPILER_FEATURES], [
  # All these tests are for C++; save the language and the compiler flags.
  # The CXXFLAGS thing is suspicious, but based on similar bits previously
  # found in GLIBCXX_CONFIGURE.
-  AC_LANG_SAVE
-  AC_LANG_CPLUSPLUS
+  AC_LANG_PUSH([C++])
  ac_test_CXXFLAGS="${CXXFLAGS+set}"
  ac_save_CXXFLAGS="$CXXFLAGS"

@@ -161,7 +160,7 @@ AC_DEFUN([GLIBCXX_CHECK_COMPILER_FEATURES], [
  fi
  AC_MSG_RESULT($ac_fdsections)

-  AC_LANG_RESTORE
+  AC_LANG_POP([C++])
  AC_SUBST(SECTION_FLAGS)
])

@@ -339,8 +338,7 @@ AC_DEFUN([GLIBCXX_CHECK_SETRLIMIT_ancilliary], [
])

AC_DEFUN([GLIBCXX_CHECK_SETRLIMIT], [
-  AC_LANG_SAVE
-  AC_LANG_CPLUSPLUS
+  AC_LANG_PUSH([C++])
  setrlimit_have_headers=yes
  AC_CHECK_HEADERS(unistd.h sys/time.h sys/resource.h,
                   [],
@@ -374,7 +372,7 @@ AC_DEFUN([GLIBCXX_CHECK_SETRLIMIT], [
                "make check"])
    fi
  fi
-  AC_LANG_RESTORE
+  AC_LANG_POP([C++])
])


@@ -384,8 +382,7 @@ dnl Define HAVE_S_ISREG / HAVE_S_IFREG appropriately.
dnl
AC_DEFUN([GLIBCXX_CHECK_S_ISREG_OR_S_IFREG], [

-  AC_LANG_SAVE
-  AC_LANG_CPLUSPLUS
+  AC_LANG_PUSH([C++])
  ac_save_CXXFLAGS="$CXXFLAGS"
  CXXFLAGS="$CXXFLAGS -fno-exceptions"

@@ -421,7 +418,7 @@ AC_DEFUN([GLIBCXX_CHECK_S_ISREG_OR_S_IFREG], [
  AC_MSG_RESULT($res)

  CXXFLAGS="$ac_save_CXXFLAGS"
-  AC_LANG_RESTORE
+  AC_LANG_POP([C++])
])


@@ -430,8 +427,7 @@ dnl Check whether poll is available in <poll.h>, and define 
HAVE_POLL.
dnl
AC_DEFUN([GLIBCXX_CHECK_POLL], [

-  AC_LANG_SAVE
-  AC_LANG_CPLUSPLUS
+  AC_LANG_PUSH([C++])
  ac_save_CXXFLAGS="$CXXFLAGS"
  CXXFLAGS="$CXXFLAGS -fno-exceptions"

@@ -449,7 +445,7 @@ AC_DEFUN([GLIBCXX_CHECK_POLL], [
  fi

  CXXFLAGS="$ac_save_CXXFLAGS"
-  AC_LANG_RESTORE
+  AC_LANG_POP([C++])
])


@@ -458,8 +454,7 @@ dnl Check whether writev is available in <sys/uio.h>, and 
define HAVE_WRITEV.
dnl
AC_DEFUN([GLIBCXX_CHECK_WRITEV], [

-  AC_LANG_SAVE
-  AC_LANG_CPLUSPLUS
+  AC_LANG_PUSH([C++])
  ac_save_CXXFLAGS="$CXXFLAGS"
  CXXFLAGS="$CXXFLAGS -fno-exceptions"

@@ -476,7 +471,7 @@ AC_DEFUN([GLIBCXX_CHECK_WRITEV], [
  fi

  CXXFLAGS="$ac_save_CXXFLAGS"
-  AC_LANG_RESTORE
+  AC_LANG_POP([C++])
])


@@ -484,8 +479,7 @@ dnl
dnl Check whether LFS support is available.
dnl
AC_DEFUN([GLIBCXX_CHECK_LFS], [
-  AC_LANG_SAVE
-  AC_LANG_CPLUSPLUS
+  AC_LANG_PUSH([C++])
  ac_save_CXXFLAGS="$CXXFLAGS"
  CXXFLAGS="$CXXFLAGS -fno-exceptions"
  AC_CACHE_CHECK([for LFS support], glibcxx_cv_LFS, [
@@ -524,7 +518,7 @@ AC_DEFUN([GLIBCXX_CHECK_LFS], [
  fi

  CXXFLAGS="$ac_save_CXXFLAGS"
-  AC_LANG_RESTORE
+  AC_LANG_POP([C++])
])


@@ -876,8 +870,7 @@ AC_DEFUN([GLIBCXX_ENABLE_C99], [
  GLIBCXX_ENABLE(c99,$1,,[turns on ISO/IEC 9899:1999 support])

  if test x"$enable_c99" = x"yes"; then
-    AC_LANG_SAVE
-    AC_LANG_CPLUSPLUS
+    AC_LANG_PUSH([C++])

    # Use -std=c++98 (instead of -std=gnu++98) because leaving __STRICT_ANSI__
    # undefined may cause fake C99 facilities, like pre-standard snprintf,
@@ -1107,10 +1100,9 @@ AC_DEFUN([GLIBCXX_ENABLE_C99], [
    gcc_no_link="$ac_save_gcc_no_link"
    LIBS="$ac_save_LIBS"
    CXXFLAGS="$ac_save_CXXFLAGS"
-    AC_LANG_RESTORE
+    AC_LANG_POP([C++])

-    AC_LANG_SAVE
-    AC_LANG_CPLUSPLUS
+    AC_LANG_PUSH([C++])

    # Use -std=c++11 and test again for C99 library feature in C++11 mode.
    # For the reasons given above we use -std=c++11 not -std=gnu++11.
@@ -1721,7 +1713,7 @@ AC_DEFUN([GLIBCXX_ENABLE_C99], [
    gcc_no_link="$ac_save_gcc_no_link"
    LIBS="$ac_save_LIBS"
    CXXFLAGS="$ac_save_CXXFLAGS"
-    AC_LANG_RESTORE
+    AC_LANG_POP([C++])
  fi

  AC_MSG_CHECKING([for fully enabled ISO C99 support])
@@ -1759,8 +1751,7 @@ AC_DEFUN([GLIBCXX_ENABLE_LIBSTDCXX_TIME], [
    [use KIND for check type],
    [permit yes|no|rt])

-  AC_LANG_SAVE
-  AC_LANG_CPLUSPLUS
+  AC_LANG_PUSH([C++])
  ac_save_CXXFLAGS="$CXXFLAGS"
  CXXFLAGS="$CXXFLAGS -fno-exceptions"
  ac_save_LIBS="$LIBS"
@@ -1999,7 +1990,7 @@ AC_DEFUN([GLIBCXX_ENABLE_LIBSTDCXX_TIME], [

  CXXFLAGS="$ac_save_CXXFLAGS"
  LIBS="$ac_save_LIBS"
-  AC_LANG_RESTORE
+  AC_LANG_POP([C++])
])

dnl
@@ -2010,8 +2001,7 @@ AC_DEFUN([GLIBCXX_CHECK_GETTIMEOFDAY], [

  AC_MSG_CHECKING([for gettimeofday])

-  AC_LANG_SAVE
-  AC_LANG_CPLUSPLUS
+  AC_LANG_PUSH([C++])
  ac_save_CXXFLAGS="$CXXFLAGS"
  CXXFLAGS="$CXXFLAGS -fno-exceptions"

@@ -2032,7 +2022,7 @@ AC_DEFUN([GLIBCXX_CHECK_GETTIMEOFDAY], [
  fi

  CXXFLAGS="$ac_save_CXXFLAGS"
-  AC_LANG_RESTORE
+  AC_LANG_POP([C++])
])

dnl
@@ -2041,8 +2031,7 @@ dnl facilities in Chapter 8, "C compatibility".
dnl
AC_DEFUN([GLIBCXX_CHECK_C99_TR1], [

-  AC_LANG_SAVE
-  AC_LANG_CPLUSPLUS
+  AC_LANG_PUSH([C++])

  # Use -std=c++98 because -std=gnu++98 leaves __STRICT_ANSI__
  # undefined and fake C99 facilities may be spuriously enabled.
@@ -2403,7 +2392,7 @@ AC_DEFUN([GLIBCXX_CHECK_C99_TR1], [
  AC_CHECK_HEADERS(stdalign.h)

  CXXFLAGS="$ac_save_CXXFLAGS"
-  AC_LANG_RESTORE
+  AC_LANG_POP([C++])
])

dnl
@@ -2414,8 +2403,7 @@ AC_DEFUN([GLIBCXX_CHECK_UCHAR_H], [
  # Test uchar.h.
  AC_CHECK_HEADERS(uchar.h, ac_has_uchar_h=yes, ac_has_uchar_h=no)

-  AC_LANG_SAVE
-  AC_LANG_CPLUSPLUS
+  AC_LANG_PUSH([C++])
  ac_save_CXXFLAGS="$CXXFLAGS"
  CXXFLAGS="$CXXFLAGS -std=c++11"

@@ -2492,7 +2480,7 @@ AC_DEFUN([GLIBCXX_CHECK_UCHAR_H], [
  fi

  CXXFLAGS="$ac_save_CXXFLAGS"
-  AC_LANG_RESTORE
+  AC_LANG_POP([C++])
])


@@ -2565,8 +2553,7 @@ dnl Check whether required C++ overloads are present in 
<stdio.h>.
dnl
AC_DEFUN([GLIBCXX_CHECK_STDIO_PROTO], [

-  AC_LANG_SAVE
-  AC_LANG_CPLUSPLUS
+  AC_LANG_PUSH([C++])
  # Use C++11 because a conforming <stdio.h> won't define gets for C++14,
  # and we don't need a declaration for C++14 anyway.
  ac_save_CXXFLAGS="$CXXFLAGS"
@@ -2589,7 +2576,7 @@ AC_DEFUN([GLIBCXX_CHECK_STDIO_PROTO], [
  fi

  CXXFLAGS="$ac_save_CXXFLAGS"
-  AC_LANG_RESTORE
+  AC_LANG_POP([C++])
])

dnl
@@ -2598,8 +2585,7 @@ dnl types are present in <math.h>.
dnl
AC_DEFUN([GLIBCXX_CHECK_MATH11_PROTO], [

-  AC_LANG_SAVE
-  AC_LANG_CPLUSPLUS
+  AC_LANG_PUSH([C++])
  ac_save_CXXFLAGS="$CXXFLAGS"
  CXXFLAGS="$CXXFLAGS -std=c++11"

@@ -2735,7 +2721,7 @@ AC_DEFUN([GLIBCXX_CHECK_MATH11_PROTO], [
  esac

  CXXFLAGS="$ac_save_CXXFLAGS"
-  AC_LANG_RESTORE
+  AC_LANG_POP([C++])
])

dnl
@@ -3520,8 +3506,7 @@ dnl  ENABLE_FLOAT128
dnl
AC_DEFUN([GLIBCXX_ENABLE_FLOAT128], [

-  AC_LANG_SAVE
-  AC_LANG_CPLUSPLUS
+  AC_LANG_PUSH([C++])

  # Fake what AC_COMPILE_IFELSE does, without linking as this is
  # unnecessary for this test.
@@ -3552,7 +3537,7 @@ EOF
    GLIBCXX_CONDITIONAL(ENABLE_FLOAT128, test $enable_float128 = yes)
    rm -f conftest*

-  AC_LANG_RESTORE
+  AC_LANG_POP([C++])
])

dnl
@@ -3585,8 +3570,7 @@ AC_DEFUN([GLIBCXX_ENABLE_WCHAR_T], [

  if test x"$enable_wchar_t" = x"yes"; then

-    AC_LANG_SAVE
-    AC_LANG_CPLUSPLUS
+    AC_LANG_PUSH([C++])

    if test x"$ac_has_wchar_h" = xyes &&
       test x"$ac_has_wctype_h" = xyes; then
@@ -3656,7 +3640,7 @@ AC_DEFUN([GLIBCXX_ENABLE_WCHAR_T], [
      enable_wchar_t=no
    fi

-    AC_LANG_RESTORE
+    AC_LANG_POP([C++])
  fi

  if test x"$enable_wchar_t" = x"yes"; then
@@ -3690,8 +3674,7 @@ AC_DEFUN([GLIBCXX_ENABLE_PCH], [
      [glibcxx_cv_prog_CXX_pch],
      [ac_save_CXXFLAGS="$CXXFLAGS"
       CXXFLAGS="$CXXFLAGS -Werror -Winvalid-pch -Wno-deprecated"
-       AC_LANG_SAVE
-       AC_LANG_CPLUSPLUS
+       AC_LANG_PUSH([C++])
       echo '#include <math.h>' > conftest.h
       if $CXX $CXXFLAGS $CPPFLAGS -x c++-header conftest.h \
                          -o conftest.h.gch 1>&5 2>&1 &&
@@ -3705,7 +3688,7 @@ AC_DEFUN([GLIBCXX_ENABLE_PCH], [
       fi
       rm -f conftest*
       CXXFLAGS=$ac_save_CXXFLAGS
-       AC_LANG_RESTORE
+       AC_LANG_POP([C++])
      ])
    enable_libstdcxx_pch=$glibcxx_cv_prog_CXX_pch
  fi
@@ -3743,8 +3726,7 @@ dnl Note:
dnl libgomp and libgfortran use a link test, see CHECK_SYNC_FETCH_AND_ADD.
dnl
AC_DEFUN([GLIBCXX_ENABLE_ATOMIC_BUILTINS], [
-  AC_LANG_SAVE
-  AC_LANG_CPLUSPLUS
+  AC_LANG_PUSH([C++])
  old_CXXFLAGS="$CXXFLAGS"

  # Do link tests if possible, otherwise asm tests. Limited to some platforms
@@ -3816,7 +3798,7 @@ EOF
  rm -f ./atomic_word.h

  CXXFLAGS="$old_CXXFLAGS"
-  AC_LANG_RESTORE
+  AC_LANG_POP([C++])

  # Set atomicity_dir to builtins if the test above passes,
  # or if the builtins were already chosen (e.g. by configure.host).
@@ -3881,8 +3863,7 @@ AC_DEFUN([GLIBCXX_ENABLE_LOCK_POLICY], [
  AC_MSG_CHECKING([for lock policy for shared_ptr reference counts])

  if test x"$libstdcxx_atomic_lock_policy" = x"auto"; then
-    AC_LANG_SAVE
-    AC_LANG_CPLUSPLUS
+    AC_LANG_PUSH([C++])
    ac_save_CXXFLAGS="$CXXFLAGS"

    dnl Why do we care about 2-byte CAS on targets with 4-byte _Atomic_word?!
@@ -3901,7 +3882,7 @@ AC_DEFUN([GLIBCXX_ENABLE_LOCK_POLICY], [
    ]],[])],
    [libstdcxx_atomic_lock_policy=atomic],
    [libstdcxx_atomic_lock_policy=mutex])
-    AC_LANG_RESTORE
+    AC_LANG_POP([C++])
    CXXFLAGS="$ac_save_CXXFLAGS"
  fi

@@ -4239,8 +4220,7 @@ AC_DEFUN([GLIBCXX_CHECK_GTHREADS], [
  if test x$enable_libstdcxx_threads = xauto ||
     test x$enable_libstdcxx_threads = xyes; then

-  AC_LANG_SAVE
-  AC_LANG_CPLUSPLUS
+  AC_LANG_PUSH([C++])

  ac_save_CXXFLAGS="$CXXFLAGS"
  CXXFLAGS="$CXXFLAGS -fno-exceptions \
@@ -4325,7 +4305,7 @@ AC_DEFUN([GLIBCXX_CHECK_GTHREADS], [
  fi

  CXXFLAGS="$ac_save_CXXFLAGS"
-  AC_LANG_RESTORE
+  AC_LANG_POP([C++])
])


@@ -4392,8 +4372,7 @@ dnl Check whether get_nprocs is available in 
<sys/sysinfo.h>, and define _GLIBCX
dnl
AC_DEFUN([GLIBCXX_CHECK_GET_NPROCS], [

-  AC_LANG_SAVE
-  AC_LANG_CPLUSPLUS
+  AC_LANG_PUSH([C++])
  ac_save_CXXFLAGS="$CXXFLAGS"
  CXXFLAGS="$CXXFLAGS -fno-exceptions"

@@ -4410,7 +4389,7 @@ AC_DEFUN([GLIBCXX_CHECK_GET_NPROCS], [
  fi

  CXXFLAGS="$ac_save_CXXFLAGS"
-  AC_LANG_RESTORE
+  AC_LANG_POP([C++])
])

dnl
@@ -4418,8 +4397,7 @@ dnl Check whether sysconf(_SC_NPROCESSORS_ONLN) is available in 
<unistd.h>, and
dnl
AC_DEFUN([GLIBCXX_CHECK_SC_NPROCESSORS_ONLN], [

-  AC_LANG_SAVE
-  AC_LANG_CPLUSPLUS
+  AC_LANG_PUSH([C++])
  ac_save_CXXFLAGS="$CXXFLAGS"
  CXXFLAGS="$CXXFLAGS -fno-exceptions"

@@ -4436,7 +4414,7 @@ AC_DEFUN([GLIBCXX_CHECK_SC_NPROCESSORS_ONLN], [
  fi

  CXXFLAGS="$ac_save_CXXFLAGS"
-  AC_LANG_RESTORE
+  AC_LANG_POP([C++])
])

dnl
@@ -4444,8 +4422,7 @@ dnl Check whether sysconf(_SC_NPROC_ONLN) is available in 
<unistd.h>, and define
dnl
AC_DEFUN([GLIBCXX_CHECK_SC_NPROC_ONLN], [

-  AC_LANG_SAVE
-  AC_LANG_CPLUSPLUS
+  AC_LANG_PUSH([C++])
  ac_save_CXXFLAGS="$CXXFLAGS"
  CXXFLAGS="$CXXFLAGS -fno-exceptions"

@@ -4462,7 +4439,7 @@ AC_DEFUN([GLIBCXX_CHECK_SC_NPROC_ONLN], [
  fi

  CXXFLAGS="$ac_save_CXXFLAGS"
-  AC_LANG_RESTORE
+  AC_LANG_POP([C++])
])

dnl
@@ -4470,8 +4447,7 @@ dnl Check whether pthread_num_processors_np is available in 
<pthread.h>, and def
dnl
AC_DEFUN([GLIBCXX_CHECK_PTHREADS_NUM_PROCESSORS_NP], [

-  AC_LANG_SAVE
-  AC_LANG_CPLUSPLUS
+  AC_LANG_PUSH([C++])
  ac_save_CXXFLAGS="$CXXFLAGS"
  CXXFLAGS="$CXXFLAGS -fno-exceptions"

@@ -4488,7 +4464,7 @@ AC_DEFUN([GLIBCXX_CHECK_PTHREADS_NUM_PROCESSORS_NP], [
  fi

  CXXFLAGS="$ac_save_CXXFLAGS"
-  AC_LANG_RESTORE
+  AC_LANG_POP([C++])
])

dnl
@@ -4497,8 +4473,7 @@ dnl and define _GLIBCXX_USE_PTHREAD_COND_CLOCKWAIT.
dnl
AC_DEFUN([GLIBCXX_CHECK_PTHREAD_COND_CLOCKWAIT], [

-  AC_LANG_SAVE
-  AC_LANG_CPLUSPLUS
+  AC_LANG_PUSH([C++])
  ac_save_CXXFLAGS="$CXXFLAGS"
  CXXFLAGS="$CXXFLAGS -fno-exceptions"
  ac_save_LIBS="$LIBS"
@@ -4518,7 +4493,7 @@ AC_DEFUN([GLIBCXX_CHECK_PTHREAD_COND_CLOCKWAIT], [

  CXXFLAGS="$ac_save_CXXFLAGS"
  LIBS="$ac_save_LIBS"
-  AC_LANG_RESTORE
+  AC_LANG_POP([C++])
])

dnl
@@ -4527,8 +4502,7 @@ dnl and define _GLIBCXX_USE_PTHREAD_MUTEX_CLOCKLOCK.
dnl
AC_DEFUN([GLIBCXX_CHECK_PTHREAD_MUTEX_CLOCKLOCK], [

-  AC_LANG_SAVE
-  AC_LANG_CPLUSPLUS
+  AC_LANG_PUSH([C++])
  ac_save_CXXFLAGS="$CXXFLAGS"
  CXXFLAGS="$CXXFLAGS -fno-exceptions"
  ac_save_LIBS="$LIBS"
@@ -4548,7 +4522,7 @@ AC_DEFUN([GLIBCXX_CHECK_PTHREAD_MUTEX_CLOCKLOCK], [

  CXXFLAGS="$ac_save_CXXFLAGS"
  LIBS="$ac_save_LIBS"
-  AC_LANG_RESTORE
+  AC_LANG_POP([C++])
])

dnl
@@ -4557,8 +4531,7 @@ dnl and define _GLIBCXX_USE_PTHREAD_MUTEX_CLOCKLOCK.
dnl
AC_DEFUN([GLIBCXX_CHECK_PTHREAD_RWLOCK_CLOCKLOCK], [

-  AC_LANG_SAVE
-  AC_LANG_CPLUSPLUS
+  AC_LANG_PUSH([C++])
  ac_save_CXXFLAGS="$CXXFLAGS"
  CXXFLAGS="$CXXFLAGS -fno-exceptions"
  ac_save_LIBS="$LIBS"
@@ -4580,7 +4553,7 @@ AC_DEFUN([GLIBCXX_CHECK_PTHREAD_RWLOCK_CLOCKLOCK], [

  CXXFLAGS="$ac_save_CXXFLAGS"
  LIBS="$ac_save_LIBS"
-  AC_LANG_RESTORE
+  AC_LANG_POP([C++])
])

dnl
@@ -4588,8 +4561,7 @@ dnl Check whether sysctl is available in <pthread.h>, and 
define _GLIBCXX_USE_SY
dnl
AC_DEFUN([GLIBCXX_CHECK_SYSCTL_HW_NCPU], [

-  AC_LANG_SAVE
-  AC_LANG_CPLUSPLUS
+  AC_LANG_PUSH([C++])
  ac_save_CXXFLAGS="$CXXFLAGS"
  CXXFLAGS="$CXXFLAGS -fno-exceptions"

@@ -4614,7 +4586,7 @@ AC_DEFUN([GLIBCXX_CHECK_SYSCTL_HW_NCPU], [
  fi

  CXXFLAGS="$ac_save_CXXFLAGS"
-  AC_LANG_RESTORE
+  AC_LANG_POP([C++])
])

dnl
@@ -4654,8 +4626,7 @@ dnl and define _GLIBCXX_USE_TMPNAM.
dnl
AC_DEFUN([GLIBCXX_CHECK_TMPNAM], [dnl
dnl
-  AC_LANG_SAVE
-  AC_LANG_CPLUSPLUS
+  AC_LANG_PUSH([C++])
  ac_save_CXXFLAGS="$CXXFLAGS"
  CXXFLAGS="$CXXFLAGS -fno-exceptions"
dnl
@@ -4671,7 +4642,7 @@ dnl
  fi
dnl
  CXXFLAGS="$ac_save_CXXFLAGS"
-  AC_LANG_RESTORE
+  AC_LANG_POP([C++])
])

dnl
@@ -4682,8 +4653,7 @@ AC_DEFUN([GLIBCXX_CHECK_SDT_H], [
  # Note that this test has to be run with the C language.
  # Otherwise, sdt.h will try to include some headers from
  # libstdc++ itself.
-  AC_LANG_SAVE
-  AC_LANG_C
+  AC_LANG_PUSH([C])
  AC_CACHE_CHECK([for suitable sys/sdt.h],
    glibcxx_cv_sys_sdt_h, [
    # Because we have to run the test in C, we use grep rather
@@ -4696,7 +4666,7 @@ AC_DEFUN([GLIBCXX_CHECK_SDT_H], [
      int f() { STAP_PROBE(hi, bob); }
    ], [glibcxx_cv_sys_sdt_h=yes], [glibcxx_cv_sys_sdt_h=no])
  ])
-  AC_LANG_RESTORE
+  AC_LANG_POP([C])
  if test $glibcxx_cv_sys_sdt_h = yes; then
    AC_DEFINE(HAVE_SYS_SDT_H, 1,
              [Define to 1 if you have a suitable <sys/sdt.h> header file])
@@ -4819,8 +4789,7 @@ dnl  HAVE_SYMLINK
dnl
AC_DEFUN([GLIBCXX_CHECK_FILESYSTEM_DEPS], [dnl
dnl
-  AC_LANG_SAVE
-  AC_LANG_CPLUSPLUS
+  AC_LANG_PUSH([C++])
  ac_save_CXXFLAGS="$CXXFLAGS"
  CXXFLAGS="$CXXFLAGS -fno-exceptions"
dnl
@@ -5158,7 +5127,7 @@ dnl
  fi
dnl
  CXXFLAGS="$ac_save_CXXFLAGS"
-  AC_LANG_RESTORE
+  AC_LANG_POP([C++])
])

dnl
@@ -5237,8 +5206,7 @@ dnl Check whether getentropy is present in <unistd.h>.
dnl
AC_DEFUN([GLIBCXX_CHECK_GETENTROPY], [

-  AC_LANG_SAVE
-  AC_LANG_CPLUSPLUS
+  AC_LANG_PUSH([C++])
  AC_CACHE_CHECK([for getentropy], glibcxx_cv_getentropy, [
      GCC_TRY_COMPILE_OR_LINK(
        [#include <unistd.h>],
@@ -5250,7 +5218,7 @@ AC_DEFUN([GLIBCXX_CHECK_GETENTROPY], [
  if test $glibcxx_cv_getentropy = yes; then
    AC_DEFINE(HAVE_GETENTROPY, 1, [Define if getentropy is available in 
<unistd.h>.])
  fi
-  AC_LANG_RESTORE
+  AC_LANG_POP([C++])
])

dnl
@@ -5258,8 +5226,7 @@ dnl Check whether arc4random is present in <stdlib.h>.
dnl
AC_DEFUN([GLIBCXX_CHECK_ARC4RANDOM], [

-  AC_LANG_SAVE
-  AC_LANG_CPLUSPLUS
+  AC_LANG_PUSH([C++])
  AC_CACHE_CHECK([for arc4random], glibcxx_cv_arc4random, [
      GCC_TRY_COMPILE_OR_LINK(
        [#include <stdlib.h>],
@@ -5270,7 +5237,7 @@ AC_DEFUN([GLIBCXX_CHECK_ARC4RANDOM], [
  if test $glibcxx_cv_arc4random = yes; then
    AC_DEFINE(HAVE_ARC4RANDOM, 1, [Define if arc4random is available in 
<stdlib.h>.])
  fi
-  AC_LANG_RESTORE
+  AC_LANG_POP([C++])
])

dnl
@@ -5287,7 +5254,7 @@ AC_DEFUN([GLIBCXX_ENABLE_BACKTRACE], [

  BACKTRACE_CPPFLAGS="-D_GNU_SOURCE"

-  AC_LANG_CPLUSPLUS
+  AC_LANG_PUSH([C++])
  old_CXXFLAGS="$CXXFLAGS"

  # libbacktrace's own configure.ac only tests atomics for int,
@@ -5355,7 +5322,7 @@ EOF
  fi

  CXXFLAGS="$old_CXXFLAGS"
-  AC_LANG_RESTORE
+  AC_LANG_POP([C++])

  if test "$glibcxx_cv_libbacktrace_atomics" = yes; then
    BACKTRACE_CPPFLAGS="$BACKTRACE_CPPFLAGS -DHAVE_ATOMIC_FUNCTIONS=1"
@@ -5663,9 +5630,7 @@ dnl Defines:
dnl  _GLIBCXX_USE_STRUCT_TM_TM_ZONE if struct tm has a tm_zone member.
dnl
AC_DEFUN([GLIBCXX_STRUCT_TM_TM_ZONE], [
-
-  AC_LANG_SAVE
-  AC_LANG_CPLUSPLUS
+  AC_LANG_PUSH([C++])
  ac_save_CXXFLAGS="$CXXFLAGS"
  CXXFLAGS="$CXXFLAGS -std=c++20"

@@ -5685,7 +5650,7 @@ AC_DEFUN([GLIBCXX_STRUCT_TM_TM_ZONE], [
  fi

  CXXFLAGS="$ac_save_CXXFLAGS"
-  AC_LANG_RESTORE
+  AC_LANG_POP([C++])
])

dnl
@@ -5696,8 +5661,7 @@ dnl  _GLIBCXX_CAN_ALIGNAS_DESTRUCTIVE_SIZE if objects 
with static storage
dnl    duration can be aligned to std::hardware_destructive_interference_size.
dnl
AC_DEFUN([GLIBCXX_CHECK_ALIGNAS_CACHELINE], [
-  AC_LANG_SAVE
-  AC_LANG_CPLUSPLUS
+  AC_LANG_PUSH([C++])

  AC_MSG_CHECKING([whether static objects can be aligned to the cacheline size])
  AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]],
@@ -5711,7 +5675,7 @@ AC_DEFUN([GLIBCXX_CHECK_ALIGNAS_CACHELINE], [
  fi
  AC_MSG_RESULT($ac_alignas_cacheline)

-  AC_LANG_RESTORE
+  AC_LANG_POP([C++])
])

dnl
@@ -5723,8 +5687,7 @@ dnl  _GLIBCXX_USE_INIT_PRIORITY_ATTRIBUTE if GCC supports 
the init_priority
dnl    attribute for the target.
dnl
AC_DEFUN([GLIBCXX_CHECK_INIT_PRIORITY], [
-AC_LANG_SAVE
-  AC_LANG_CPLUSPLUS
+  AC_LANG_PUSH([C++])

  AC_MSG_CHECKING([whether init_priority attribute is supported])
  AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[
@@ -5738,7 +5701,7 @@ AC_LANG_SAVE
  fi
  AC_MSG_RESULT($ac_init_priority)

-  AC_LANG_RESTORE
+  AC_LANG_POP([C++])
])

dnl
@@ -5748,8 +5711,7 @@ dnl Defines:
dnl   _GLIBCXX_USE__GET_OSFHANDLE if _get_osfhandle is in <io.h> for Windows.
dnl
AC_DEFUN([GLIBCXX_CHECK_FILEBUF_NATIVE_HANDLES], [
-AC_LANG_SAVE
-  AC_LANG_CPLUSPLUS
+  AC_LANG_PUSH([C++])

  AC_MSG_CHECKING([whether _get_osfhandle is defined in <io.h>])
  AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
@@ -5770,7 +5732,7 @@ AC_LANG_SAVE
  fi
  AC_MSG_RESULT($ac_get_osfhandle)

-  AC_LANG_RESTORE
+  AC_LANG_POP([C++])
])

dnl
@@ -5780,8 +5742,7 @@ dnl Defines:
dnl   _GLIBCXX_USE_NL_LANGINFO_L if nl_langinfo_l is in <langinfo.h>.
dnl
AC_DEFUN([GLIBCXX_CHECK_TEXT_ENCODING], [
-AC_LANG_SAVE
-  AC_LANG_CPLUSPLUS
+  AC_LANG_PUSH([C++])

  AC_MSG_CHECKING([whether nl_langinfo_l is defined in <langinfo.h>])
  AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
@@ -5801,7 +5762,7 @@ AC_LANG_SAVE
      [Define if nl_langinfo_l should be used for std::text_encoding.])
  fi

-  AC_LANG_RESTORE
+  AC_LANG_POP([C++])
])

dnl
@@ -5812,8 +5773,7 @@ dnl   _GLIBCXX_USE_PTRACE if ptrace(int, pid_t, int, int) is in 
<sys/ptrace.h>.
dnl   _GLIBCXX_USE_PROC_SELF_STATUS if /proc/self/status should be used.
dnl
AC_DEFUN([GLIBCXX_CHECK_DEBUGGING], [
-  AC_LANG_SAVE
-  AC_LANG_CPLUSPLUS
+  AC_LANG_PUSH([C++])

  AC_CHECK_HEADERS([sys/ptrace.h debugapi.h])

@@ -5836,7 +5796,7 @@ AC_DEFUN([GLIBCXX_CHECK_DEBUGGING], [
      [Define if ptrace should be used for std::is_debugger_present.])
  fi

-  AC_LANG_RESTORE
+  AC_LANG_POP([C++])
])

dnl
@@ -5847,8 +5807,7 @@ dnl   _GLIBCXX_USE_STDIO_LOCKING if flockfile, 
putc_unlocked etc. are present.
dnl   _GLIBCXX_USE_GLIBC_STDIO_EXT if FILE::_IO_write_ptr etc. are also present.
dnl
AC_DEFUN([GLIBCXX_CHECK_STDIO_LOCKING], [
-AC_LANG_SAVE
-  AC_LANG_CPLUSPLUS
+  AC_LANG_PUSH([C++])

  AC_MSG_CHECKING([whether flockfile and putc_unlocked are defined in 
<stdio.h>])
  AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
@@ -5926,7 +5885,7 @@ AC_LANG_SAVE
    fi
  fi

-  AC_LANG_RESTORE
+  AC_LANG_POP([C++])
])


diff --git a/libstdc++-v3/configure b/libstdc++-v3/configure
index 2d725c1bab9..f3cc12329b0 100755
--- a/libstdc++-v3/configure
+++ b/libstdc++-v3/configure
@@ -16308,7 +16308,6 @@ if ${glibcxx_cv_prog_CXX_pch+:} false; then :
else
  ac_save_CXXFLAGS="$CXXFLAGS"
       CXXFLAGS="$CXXFLAGS -Werror -Winvalid-pch -Wno-deprecated"
-
       ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -16400,7 +16399,6 @@ esac



-
  ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -16477,7 +16475,7 @@ $as_echo "$glibcxx_cv_atomic_word" >&6; }
    # Fake what AC_COMPILE_IFELSE does.

    cat > conftest.$ac_ext << EOF
-#line 16480 "configure"
+#line 16478 "configure"
#include "atomic_word.h"
int main()
{
@@ -16562,7 +16560,6 @@ fi
$as_echo_n "checking for lock policy for shared_ptr reference counts... " >&6; }

  if test x"$libstdcxx_atomic_lock_policy" = x"auto"; then
-
    ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -16625,7 +16622,7 @@ $as_echo "mutex" >&6; }
  # unnecessary for this test.

    cat > conftest.$ac_ext << EOF
-#line 16628 "configure"
+#line 16625 "configure"
int main()
{
  _Decimal32 d1;
@@ -16655,7 +16652,6 @@ $as_echo "$enable_dfp" >&6; }



-
  ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -16667,7 +16663,7 @@ ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
  # unnecessary for this test.

  cat > conftest.$ac_ext << EOF
-#line 16670 "configure"
+#line 16666 "configure"
template<typename T1, typename T2>
  struct same
  { typedef T2 type; };
@@ -16714,7 +16710,6 @@ fi
  # All these tests are for C++; save the language and the compiler flags.
  # The CXXFLAGS thing is suspicious, but based on similar bits previously
  # found in GLIBCXX_CONFIGURE.
-
  ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -17463,7 +17458,6 @@ done

  if test x"$enable_wchar_t" = x"yes"; then

-
    ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -17591,7 +17585,6 @@ fi


  if test x"$enable_c99" = x"yes"; then
-
    ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -18268,7 +18261,6 @@ ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS 
$LDFLAGS conftest.$ac_ext $
ac_compiler_gnu=$ac_cv_c_compiler_gnu


-
    ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -19794,7 +19786,6 @@ fi
# Checks for operating systems support that doesn't require linking.


-
  ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -19848,7 +19839,6 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu



-
  ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -20063,7 +20053,6 @@ fi
done


-
  ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -20205,7 +20194,6 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu

# For LFS support.

-
  ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -20379,7 +20367,6 @@ done



-
  ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -20460,7 +20447,6 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu



-
  ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -20615,7 +20601,6 @@ done



-
  ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -20714,7 +20699,6 @@ done
# For C99 support to TR1.


-
  ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -21345,7 +21329,6 @@ fi
  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for gettimeofday" >&5
$as_echo_n "checking for gettimeofday... " >&6; }

-
  ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -21451,7 +21434,6 @@ fi



-
  ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -22092,7 +22074,6 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu


# Check for tmpnam which is obsolescent in POSIX.1-2008
-
  ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -22168,7 +22149,6 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
# For pthread_cond_clockwait


-
  ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -22250,7 +22230,6 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
# For pthread_mutex_clocklock


-
  ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -22332,7 +22311,6 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
# For pthread_rwlock_clockrdlock and pthread_rwlock_clockwrlock


-
  ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -22470,7 +22448,6 @@ done



-
  ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -22559,7 +22536,6 @@ done



-
  ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -22636,7 +22612,6 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu



-
  ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -22713,7 +22688,6 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu



-
  ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -22790,7 +22764,6 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu



-
  ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -22885,7 +22858,6 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
  # Note that this test has to be run with the C language.
  # Otherwise, sdt.h will try to include some headers from
  # libstdc++ itself.
-
  ac_ext=c
ac_cpp='$CPP $CPPFLAGS'
ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -23314,7 +23286,6 @@ $as_echo_n "checking for isinf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -23378,7 +23349,6 @@ $as_echo_n "checking for isnan declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -23442,7 +23412,6 @@ $as_echo_n "checking for finite declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -23506,7 +23475,6 @@ $as_echo_n "checking for sincos declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -23566,7 +23534,6 @@ $as_echo_n "checking for fpclass declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -23630,7 +23597,6 @@ $as_echo_n "checking for qfpclass declaration... " >&6; 
}
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -23694,7 +23660,6 @@ $as_echo_n "checking for hypot declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -23753,7 +23718,6 @@ $as_echo_n "checking for float trig functions... " >&6; 
}
  $as_echo_n "(cached) " >&6
else

-
    ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -23810,7 +23774,6 @@ $as_echo_n "checking for float round functions... " 
>&6; }
  $as_echo_n "(cached) " >&6
else

-
    ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -23869,7 +23832,6 @@ $as_echo_n "checking for expf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -23933,7 +23895,6 @@ $as_echo_n "checking for isnanf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -23997,7 +23958,6 @@ $as_echo_n "checking for isinff declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -24061,7 +24021,6 @@ $as_echo_n "checking for atan2f declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -24121,7 +24080,6 @@ $as_echo_n "checking for fabsf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -24185,7 +24143,6 @@ $as_echo_n "checking for fmodf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -24245,7 +24202,6 @@ $as_echo_n "checking for frexpf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -24305,7 +24261,6 @@ $as_echo_n "checking for hypotf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -24365,7 +24320,6 @@ $as_echo_n "checking for ldexpf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -24425,7 +24379,6 @@ $as_echo_n "checking for logf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -24489,7 +24442,6 @@ $as_echo_n "checking for log10f declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -24553,7 +24505,6 @@ $as_echo_n "checking for modff declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -24613,7 +24564,6 @@ $as_echo_n "checking for modf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -24673,7 +24623,6 @@ $as_echo_n "checking for powf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -24733,7 +24682,6 @@ $as_echo_n "checking for sqrtf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -24797,7 +24745,6 @@ $as_echo_n "checking for sincosf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -24857,7 +24804,6 @@ $as_echo_n "checking for finitef declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -24920,7 +24866,6 @@ $as_echo_n "checking for long double trig functions... " 
>&6; }
  $as_echo_n "(cached) " >&6
else

-
    ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -24977,7 +24922,6 @@ $as_echo_n "checking for long double round functions... " 
>&6; }
  $as_echo_n "(cached) " >&6
else

-
    ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -25036,7 +24980,6 @@ $as_echo_n "checking for isnanl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -25100,7 +25043,6 @@ $as_echo_n "checking for isinfl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -25164,7 +25106,6 @@ $as_echo_n "checking for atan2l declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -25224,7 +25165,6 @@ $as_echo_n "checking for expl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -25288,7 +25228,6 @@ $as_echo_n "checking for fabsl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -25352,7 +25291,6 @@ $as_echo_n "checking for fmodl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -25412,7 +25350,6 @@ $as_echo_n "checking for frexpl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -25472,7 +25409,6 @@ $as_echo_n "checking for hypotl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -25532,7 +25468,6 @@ $as_echo_n "checking for ldexpl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -25592,7 +25527,6 @@ $as_echo_n "checking for logl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -25656,7 +25590,6 @@ $as_echo_n "checking for log10l declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -25720,7 +25653,6 @@ $as_echo_n "checking for modfl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -25780,7 +25712,6 @@ $as_echo_n "checking for powl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -25840,7 +25771,6 @@ $as_echo_n "checking for sqrtl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -25904,7 +25834,6 @@ $as_echo_n "checking for sincosl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -25964,7 +25893,6 @@ $as_echo_n "checking for finitel declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -26036,7 +25964,6 @@ $as_echo_n "checking for at_quick_exit declaration... " 
>&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -26094,7 +26021,6 @@ $as_echo_n "checking for quick_exit declaration... " 
>&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -26152,7 +26078,6 @@ $as_echo_n "checking for strtold declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -26210,7 +26135,6 @@ $as_echo_n "checking for strtof declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -27593,7 +27517,6 @@ if ${glibcxx_cv_func_acosl_use+:} false; then :
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=c
ac_cpp='$CPP $CPPFLAGS'
ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -27644,7 +27567,6 @@ if ${glibcxx_cv_func_asinl_use+:} false; then :
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=c
ac_cpp='$CPP $CPPFLAGS'
ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -27695,7 +27617,6 @@ if ${glibcxx_cv_func_atan2l_use+:} false; then :
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=c
ac_cpp='$CPP $CPPFLAGS'
ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -27746,7 +27667,6 @@ if ${glibcxx_cv_func_atanl_use+:} false; then :
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=c
ac_cpp='$CPP $CPPFLAGS'
ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -27797,7 +27717,6 @@ if ${glibcxx_cv_func_ceill_use+:} false; then :
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=c
ac_cpp='$CPP $CPPFLAGS'
ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -27848,7 +27767,6 @@ if ${glibcxx_cv_func_coshl_use+:} false; then :
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=c
ac_cpp='$CPP $CPPFLAGS'
ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -27899,7 +27817,6 @@ if ${glibcxx_cv_func_cosl_use+:} false; then :
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=c
ac_cpp='$CPP $CPPFLAGS'
ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -27950,7 +27867,6 @@ if ${glibcxx_cv_func_expl_use+:} false; then :
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=c
ac_cpp='$CPP $CPPFLAGS'
ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -28001,7 +27917,6 @@ if ${glibcxx_cv_func_fabsl_use+:} false; then :
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=c
ac_cpp='$CPP $CPPFLAGS'
ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -28052,7 +27967,6 @@ if ${glibcxx_cv_func_floorl_use+:} false; then :
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=c
ac_cpp='$CPP $CPPFLAGS'
ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -28103,7 +28017,6 @@ if ${glibcxx_cv_func_fmodl_use+:} false; then :
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=c
ac_cpp='$CPP $CPPFLAGS'
ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -28154,7 +28067,6 @@ if ${glibcxx_cv_func_frexpl_use+:} false; then :
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=c
ac_cpp='$CPP $CPPFLAGS'
ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -28205,7 +28117,6 @@ if ${glibcxx_cv_func_hypotl_use+:} false; then :
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=c
ac_cpp='$CPP $CPPFLAGS'
ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -28256,7 +28167,6 @@ if ${glibcxx_cv_func_ldexpl_use+:} false; then :
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=c
ac_cpp='$CPP $CPPFLAGS'
ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -28307,7 +28217,6 @@ if ${glibcxx_cv_func_log10l_use+:} false; then :
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=c
ac_cpp='$CPP $CPPFLAGS'
ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -28358,7 +28267,6 @@ if ${glibcxx_cv_func_logl_use+:} false; then :
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=c
ac_cpp='$CPP $CPPFLAGS'
ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -28409,7 +28317,6 @@ if ${glibcxx_cv_func_modfl_use+:} false; then :
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=c
ac_cpp='$CPP $CPPFLAGS'
ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -28460,7 +28367,6 @@ if ${glibcxx_cv_func_powl_use+:} false; then :
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=c
ac_cpp='$CPP $CPPFLAGS'
ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -28511,7 +28417,6 @@ if ${glibcxx_cv_func_sinhl_use+:} false; then :
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=c
ac_cpp='$CPP $CPPFLAGS'
ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -28562,7 +28467,6 @@ if ${glibcxx_cv_func_sinl_use+:} false; then :
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=c
ac_cpp='$CPP $CPPFLAGS'
ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -28613,7 +28517,6 @@ if ${glibcxx_cv_func_sqrtl_use+:} false; then :
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=c
ac_cpp='$CPP $CPPFLAGS'
ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -28664,7 +28567,6 @@ if ${glibcxx_cv_func_tanhl_use+:} false; then :
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=c
ac_cpp='$CPP $CPPFLAGS'
ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -28715,7 +28617,6 @@ if ${glibcxx_cv_func_tanl_use+:} false; then :
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=c
ac_cpp='$CPP $CPPFLAGS'
ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -29050,7 +28951,6 @@ case "${host}" in
  # All these tests are for C++; save the language and the compiler flags.
  # The CXXFLAGS thing is suspicious, but based on similar bits previously
  # found in GLIBCXX_CONFIGURE.
-
  ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -29315,7 +29215,6 @@ $as_echo_n "checking for isinf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -29379,7 +29278,6 @@ $as_echo_n "checking for isnan declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -29443,7 +29341,6 @@ $as_echo_n "checking for finite declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -29507,7 +29404,6 @@ $as_echo_n "checking for sincos declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -29567,7 +29463,6 @@ $as_echo_n "checking for fpclass declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -29631,7 +29526,6 @@ $as_echo_n "checking for qfpclass declaration... " >&6; 
}
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -29695,7 +29589,6 @@ $as_echo_n "checking for hypot declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -29754,7 +29647,6 @@ $as_echo_n "checking for float trig functions... " >&6; 
}
  $as_echo_n "(cached) " >&6
else

-
    ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -29811,7 +29703,6 @@ $as_echo_n "checking for float round functions... " 
>&6; }
  $as_echo_n "(cached) " >&6
else

-
    ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -29870,7 +29761,6 @@ $as_echo_n "checking for expf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -29934,7 +29824,6 @@ $as_echo_n "checking for isnanf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -29998,7 +29887,6 @@ $as_echo_n "checking for isinff declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -30062,7 +29950,6 @@ $as_echo_n "checking for atan2f declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -30122,7 +30009,6 @@ $as_echo_n "checking for fabsf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -30186,7 +30072,6 @@ $as_echo_n "checking for fmodf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -30246,7 +30131,6 @@ $as_echo_n "checking for frexpf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -30306,7 +30190,6 @@ $as_echo_n "checking for hypotf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -30366,7 +30249,6 @@ $as_echo_n "checking for ldexpf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -30426,7 +30308,6 @@ $as_echo_n "checking for logf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -30490,7 +30371,6 @@ $as_echo_n "checking for log10f declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -30554,7 +30434,6 @@ $as_echo_n "checking for modff declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -30614,7 +30493,6 @@ $as_echo_n "checking for modf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -30674,7 +30552,6 @@ $as_echo_n "checking for powf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -30734,7 +30611,6 @@ $as_echo_n "checking for sqrtf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -30798,7 +30674,6 @@ $as_echo_n "checking for sincosf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -30858,7 +30733,6 @@ $as_echo_n "checking for finitef declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -30921,7 +30795,6 @@ $as_echo_n "checking for long double trig functions... " 
>&6; }
  $as_echo_n "(cached) " >&6
else

-
    ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -30978,7 +30851,6 @@ $as_echo_n "checking for long double round functions... " 
>&6; }
  $as_echo_n "(cached) " >&6
else

-
    ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -31037,7 +30909,6 @@ $as_echo_n "checking for isnanl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -31101,7 +30972,6 @@ $as_echo_n "checking for isinfl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -31165,7 +31035,6 @@ $as_echo_n "checking for atan2l declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -31225,7 +31094,6 @@ $as_echo_n "checking for expl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -31289,7 +31157,6 @@ $as_echo_n "checking for fabsl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -31353,7 +31220,6 @@ $as_echo_n "checking for fmodl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -31413,7 +31279,6 @@ $as_echo_n "checking for frexpl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -31473,7 +31338,6 @@ $as_echo_n "checking for hypotl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -31533,7 +31397,6 @@ $as_echo_n "checking for ldexpl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -31593,7 +31456,6 @@ $as_echo_n "checking for logl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -31657,7 +31519,6 @@ $as_echo_n "checking for log10l declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -31721,7 +31582,6 @@ $as_echo_n "checking for modfl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -31781,7 +31641,6 @@ $as_echo_n "checking for powl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -31841,7 +31700,6 @@ $as_echo_n "checking for sqrtl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -31905,7 +31763,6 @@ $as_echo_n "checking for sincosl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -31965,7 +31822,6 @@ $as_echo_n "checking for finitel declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -32037,7 +31893,6 @@ $as_echo_n "checking for at_quick_exit declaration... " 
>&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -32095,7 +31950,6 @@ $as_echo_n "checking for quick_exit declaration... " 
>&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -32153,7 +32007,6 @@ $as_echo_n "checking for strtold declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -32211,7 +32064,6 @@ $as_echo_n "checking for strtof declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -32497,7 +32349,6 @@ $as_echo_n "checking for isinf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -32561,7 +32412,6 @@ $as_echo_n "checking for isnan declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -32625,7 +32475,6 @@ $as_echo_n "checking for finite declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -32689,7 +32538,6 @@ $as_echo_n "checking for sincos declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -32749,7 +32597,6 @@ $as_echo_n "checking for fpclass declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -32813,7 +32660,6 @@ $as_echo_n "checking for qfpclass declaration... " >&6; 
}
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -32877,7 +32723,6 @@ $as_echo_n "checking for hypot declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -32936,7 +32781,6 @@ $as_echo_n "checking for float trig functions... " >&6; 
}
  $as_echo_n "(cached) " >&6
else

-
    ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -32993,7 +32837,6 @@ $as_echo_n "checking for float round functions... " 
>&6; }
  $as_echo_n "(cached) " >&6
else

-
    ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -33052,7 +32895,6 @@ $as_echo_n "checking for expf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -33116,7 +32958,6 @@ $as_echo_n "checking for isnanf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -33180,7 +33021,6 @@ $as_echo_n "checking for isinff declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -33244,7 +33084,6 @@ $as_echo_n "checking for atan2f declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -33304,7 +33143,6 @@ $as_echo_n "checking for fabsf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -33368,7 +33206,6 @@ $as_echo_n "checking for fmodf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -33428,7 +33265,6 @@ $as_echo_n "checking for frexpf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -33488,7 +33324,6 @@ $as_echo_n "checking for hypotf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -33548,7 +33383,6 @@ $as_echo_n "checking for ldexpf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -33608,7 +33442,6 @@ $as_echo_n "checking for logf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -33672,7 +33505,6 @@ $as_echo_n "checking for log10f declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -33736,7 +33568,6 @@ $as_echo_n "checking for modff declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -33796,7 +33627,6 @@ $as_echo_n "checking for modf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -33856,7 +33686,6 @@ $as_echo_n "checking for powf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -33916,7 +33745,6 @@ $as_echo_n "checking for sqrtf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -33980,7 +33808,6 @@ $as_echo_n "checking for sincosf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -34040,7 +33867,6 @@ $as_echo_n "checking for finitef declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -34103,7 +33929,6 @@ $as_echo_n "checking for long double trig functions... " 
>&6; }
  $as_echo_n "(cached) " >&6
else

-
    ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -34160,7 +33985,6 @@ $as_echo_n "checking for long double round functions... " 
>&6; }
  $as_echo_n "(cached) " >&6
else

-
    ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -34219,7 +34043,6 @@ $as_echo_n "checking for isnanl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -34283,7 +34106,6 @@ $as_echo_n "checking for isinfl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -34347,7 +34169,6 @@ $as_echo_n "checking for atan2l declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -34407,7 +34228,6 @@ $as_echo_n "checking for expl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -34471,7 +34291,6 @@ $as_echo_n "checking for fabsl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -34535,7 +34354,6 @@ $as_echo_n "checking for fmodl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -34595,7 +34413,6 @@ $as_echo_n "checking for frexpl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -34655,7 +34472,6 @@ $as_echo_n "checking for hypotl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -34715,7 +34531,6 @@ $as_echo_n "checking for ldexpl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -34775,7 +34590,6 @@ $as_echo_n "checking for logl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -34839,7 +34653,6 @@ $as_echo_n "checking for log10l declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -34903,7 +34716,6 @@ $as_echo_n "checking for modfl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -34963,7 +34775,6 @@ $as_echo_n "checking for powl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -35023,7 +34834,6 @@ $as_echo_n "checking for sqrtl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -35087,7 +34897,6 @@ $as_echo_n "checking for sincosl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -35147,7 +34956,6 @@ $as_echo_n "checking for finitel declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -35219,7 +35027,6 @@ $as_echo_n "checking for at_quick_exit declaration... " 
>&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -35277,7 +35084,6 @@ $as_echo_n "checking for quick_exit declaration... " 
>&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -35335,7 +35141,6 @@ $as_echo_n "checking for strtold declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -35393,7 +35198,6 @@ $as_echo_n "checking for strtof declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -35524,7 +35328,6 @@ $as_echo_n "checking for isinf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -35588,7 +35391,6 @@ $as_echo_n "checking for isnan declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -35652,7 +35454,6 @@ $as_echo_n "checking for finite declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -35716,7 +35517,6 @@ $as_echo_n "checking for sincos declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -35776,7 +35576,6 @@ $as_echo_n "checking for fpclass declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -35840,7 +35639,6 @@ $as_echo_n "checking for qfpclass declaration... " >&6; 
}
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -35904,7 +35702,6 @@ $as_echo_n "checking for hypot declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -35963,7 +35760,6 @@ $as_echo_n "checking for float trig functions... " >&6; 
}
  $as_echo_n "(cached) " >&6
else

-
    ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -36020,7 +35816,6 @@ $as_echo_n "checking for float round functions... " 
>&6; }
  $as_echo_n "(cached) " >&6
else

-
    ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -36079,7 +35874,6 @@ $as_echo_n "checking for expf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -36143,7 +35937,6 @@ $as_echo_n "checking for isnanf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -36207,7 +36000,6 @@ $as_echo_n "checking for isinff declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -36271,7 +36063,6 @@ $as_echo_n "checking for atan2f declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -36331,7 +36122,6 @@ $as_echo_n "checking for fabsf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -36395,7 +36185,6 @@ $as_echo_n "checking for fmodf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -36455,7 +36244,6 @@ $as_echo_n "checking for frexpf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -36515,7 +36303,6 @@ $as_echo_n "checking for hypotf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -36575,7 +36362,6 @@ $as_echo_n "checking for ldexpf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -36635,7 +36421,6 @@ $as_echo_n "checking for logf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -36699,7 +36484,6 @@ $as_echo_n "checking for log10f declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -36763,7 +36547,6 @@ $as_echo_n "checking for modff declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -36823,7 +36606,6 @@ $as_echo_n "checking for modf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -36883,7 +36665,6 @@ $as_echo_n "checking for powf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -36943,7 +36724,6 @@ $as_echo_n "checking for sqrtf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -37007,7 +36787,6 @@ $as_echo_n "checking for sincosf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -37067,7 +36846,6 @@ $as_echo_n "checking for finitef declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -37130,7 +36908,6 @@ $as_echo_n "checking for long double trig functions... " 
>&6; }
  $as_echo_n "(cached) " >&6
else

-
    ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -37187,7 +36964,6 @@ $as_echo_n "checking for long double round functions... " 
>&6; }
  $as_echo_n "(cached) " >&6
else

-
    ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -37246,7 +37022,6 @@ $as_echo_n "checking for isnanl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -37310,7 +37085,6 @@ $as_echo_n "checking for isinfl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -37374,7 +37148,6 @@ $as_echo_n "checking for atan2l declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -37434,7 +37207,6 @@ $as_echo_n "checking for expl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -37498,7 +37270,6 @@ $as_echo_n "checking for fabsl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -37562,7 +37333,6 @@ $as_echo_n "checking for fmodl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -37622,7 +37392,6 @@ $as_echo_n "checking for frexpl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -37682,7 +37451,6 @@ $as_echo_n "checking for hypotl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -37742,7 +37510,6 @@ $as_echo_n "checking for ldexpl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -37802,7 +37569,6 @@ $as_echo_n "checking for logl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -37866,7 +37632,6 @@ $as_echo_n "checking for log10l declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -37930,7 +37695,6 @@ $as_echo_n "checking for modfl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -37990,7 +37754,6 @@ $as_echo_n "checking for powl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -38050,7 +37813,6 @@ $as_echo_n "checking for sqrtl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -38114,7 +37876,6 @@ $as_echo_n "checking for sincosl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -38174,7 +37935,6 @@ $as_echo_n "checking for finitel declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -38246,7 +38006,6 @@ $as_echo_n "checking for at_quick_exit declaration... " 
>&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -38304,7 +38063,6 @@ $as_echo_n "checking for quick_exit declaration... " 
>&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -38362,7 +38120,6 @@ $as_echo_n "checking for strtold declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -38420,7 +38177,6 @@ $as_echo_n "checking for strtof declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -39212,7 +38968,6 @@ $as_echo "#define HAVE_TLS 1" >>confdefs.h
  # All these tests are for C++; save the language and the compiler flags.
  # The CXXFLAGS thing is suspicious, but based on similar bits previously
  # found in GLIBCXX_CONFIGURE.
-
  ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -39477,7 +39232,6 @@ $as_echo_n "checking for isinf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -39541,7 +39295,6 @@ $as_echo_n "checking for isnan declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -39605,7 +39358,6 @@ $as_echo_n "checking for finite declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -39669,7 +39421,6 @@ $as_echo_n "checking for sincos declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -39729,7 +39480,6 @@ $as_echo_n "checking for fpclass declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -39793,7 +39543,6 @@ $as_echo_n "checking for qfpclass declaration... " >&6; 
}
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -39857,7 +39606,6 @@ $as_echo_n "checking for hypot declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -39916,7 +39664,6 @@ $as_echo_n "checking for float trig functions... " >&6; 
}
  $as_echo_n "(cached) " >&6
else

-
    ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -39973,7 +39720,6 @@ $as_echo_n "checking for float round functions... " 
>&6; }
  $as_echo_n "(cached) " >&6
else

-
    ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -40032,7 +39778,6 @@ $as_echo_n "checking for expf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -40096,7 +39841,6 @@ $as_echo_n "checking for isnanf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -40160,7 +39904,6 @@ $as_echo_n "checking for isinff declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -40224,7 +39967,6 @@ $as_echo_n "checking for atan2f declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -40284,7 +40026,6 @@ $as_echo_n "checking for fabsf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -40348,7 +40089,6 @@ $as_echo_n "checking for fmodf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -40408,7 +40148,6 @@ $as_echo_n "checking for frexpf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -40468,7 +40207,6 @@ $as_echo_n "checking for hypotf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -40528,7 +40266,6 @@ $as_echo_n "checking for ldexpf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -40588,7 +40325,6 @@ $as_echo_n "checking for logf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -40652,7 +40388,6 @@ $as_echo_n "checking for log10f declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -40716,7 +40451,6 @@ $as_echo_n "checking for modff declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -40776,7 +40510,6 @@ $as_echo_n "checking for modf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -40836,7 +40569,6 @@ $as_echo_n "checking for powf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -40896,7 +40628,6 @@ $as_echo_n "checking for sqrtf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -40960,7 +40691,6 @@ $as_echo_n "checking for sincosf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -41020,7 +40750,6 @@ $as_echo_n "checking for finitef declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -41083,7 +40812,6 @@ $as_echo_n "checking for long double trig functions... " 
>&6; }
  $as_echo_n "(cached) " >&6
else

-
    ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -41140,7 +40868,6 @@ $as_echo_n "checking for long double round functions... " 
>&6; }
  $as_echo_n "(cached) " >&6
else

-
    ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -41199,7 +40926,6 @@ $as_echo_n "checking for isnanl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -41263,7 +40989,6 @@ $as_echo_n "checking for isinfl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -41327,7 +41052,6 @@ $as_echo_n "checking for atan2l declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -41387,7 +41111,6 @@ $as_echo_n "checking for expl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -41451,7 +41174,6 @@ $as_echo_n "checking for fabsl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -41515,7 +41237,6 @@ $as_echo_n "checking for fmodl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -41575,7 +41296,6 @@ $as_echo_n "checking for frexpl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -41635,7 +41355,6 @@ $as_echo_n "checking for hypotl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -41695,7 +41414,6 @@ $as_echo_n "checking for ldexpl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -41755,7 +41473,6 @@ $as_echo_n "checking for logl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -41819,7 +41536,6 @@ $as_echo_n "checking for log10l declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -41883,7 +41599,6 @@ $as_echo_n "checking for modfl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -41943,7 +41658,6 @@ $as_echo_n "checking for powl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -42003,7 +41717,6 @@ $as_echo_n "checking for sqrtl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -42067,7 +41780,6 @@ $as_echo_n "checking for sincosl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -42127,7 +41839,6 @@ $as_echo_n "checking for finitel declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -42199,7 +41910,6 @@ $as_echo_n "checking for at_quick_exit declaration... " 
>&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -42257,7 +41967,6 @@ $as_echo_n "checking for quick_exit declaration... " 
>&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -42315,7 +42024,6 @@ $as_echo_n "checking for strtold declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -42373,7 +42081,6 @@ $as_echo_n "checking for strtof declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -42922,7 +42629,6 @@ $as_echo_n "checking for isinf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -42986,7 +42692,6 @@ $as_echo_n "checking for isnan declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -43050,7 +42755,6 @@ $as_echo_n "checking for finite declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -43114,7 +42818,6 @@ $as_echo_n "checking for sincos declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -43174,7 +42877,6 @@ $as_echo_n "checking for fpclass declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -43238,7 +42940,6 @@ $as_echo_n "checking for qfpclass declaration... " >&6; 
}
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -43302,7 +43003,6 @@ $as_echo_n "checking for hypot declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -43361,7 +43061,6 @@ $as_echo_n "checking for float trig functions... " >&6; 
}
  $as_echo_n "(cached) " >&6
else

-
    ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -43418,7 +43117,6 @@ $as_echo_n "checking for float round functions... " 
>&6; }
  $as_echo_n "(cached) " >&6
else

-
    ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -43477,7 +43175,6 @@ $as_echo_n "checking for expf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -43541,7 +43238,6 @@ $as_echo_n "checking for isnanf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -43605,7 +43301,6 @@ $as_echo_n "checking for isinff declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -43669,7 +43364,6 @@ $as_echo_n "checking for atan2f declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -43729,7 +43423,6 @@ $as_echo_n "checking for fabsf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -43793,7 +43486,6 @@ $as_echo_n "checking for fmodf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -43853,7 +43545,6 @@ $as_echo_n "checking for frexpf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -43913,7 +43604,6 @@ $as_echo_n "checking for hypotf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -43973,7 +43663,6 @@ $as_echo_n "checking for ldexpf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -44033,7 +43722,6 @@ $as_echo_n "checking for logf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -44097,7 +43785,6 @@ $as_echo_n "checking for log10f declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -44161,7 +43848,6 @@ $as_echo_n "checking for modff declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -44221,7 +43907,6 @@ $as_echo_n "checking for modf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -44281,7 +43966,6 @@ $as_echo_n "checking for powf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -44341,7 +44025,6 @@ $as_echo_n "checking for sqrtf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -44405,7 +44088,6 @@ $as_echo_n "checking for sincosf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -44465,7 +44147,6 @@ $as_echo_n "checking for finitef declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -44528,7 +44209,6 @@ $as_echo_n "checking for long double trig functions... " 
>&6; }
  $as_echo_n "(cached) " >&6
else

-
    ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -44585,7 +44265,6 @@ $as_echo_n "checking for long double round functions... " 
>&6; }
  $as_echo_n "(cached) " >&6
else

-
    ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -44644,7 +44323,6 @@ $as_echo_n "checking for isnanl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -44708,7 +44386,6 @@ $as_echo_n "checking for isinfl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -44772,7 +44449,6 @@ $as_echo_n "checking for atan2l declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -44832,7 +44508,6 @@ $as_echo_n "checking for expl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -44896,7 +44571,6 @@ $as_echo_n "checking for fabsl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -44960,7 +44634,6 @@ $as_echo_n "checking for fmodl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -45020,7 +44693,6 @@ $as_echo_n "checking for frexpl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -45080,7 +44752,6 @@ $as_echo_n "checking for hypotl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -45140,7 +44811,6 @@ $as_echo_n "checking for ldexpl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -45200,7 +44870,6 @@ $as_echo_n "checking for logl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -45264,7 +44933,6 @@ $as_echo_n "checking for log10l declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -45328,7 +44996,6 @@ $as_echo_n "checking for modfl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -45388,7 +45055,6 @@ $as_echo_n "checking for powl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -45448,7 +45114,6 @@ $as_echo_n "checking for sqrtl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -45512,7 +45177,6 @@ $as_echo_n "checking for sincosl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -45572,7 +45236,6 @@ $as_echo_n "checking for finitel declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -45644,7 +45307,6 @@ $as_echo_n "checking for at_quick_exit declaration... " 
>&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -45702,7 +45364,6 @@ $as_echo_n "checking for quick_exit declaration... " 
>&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -45760,7 +45421,6 @@ $as_echo_n "checking for strtold declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -45818,7 +45478,6 @@ $as_echo_n "checking for strtof declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -46599,7 +46258,6 @@ $as_echo_n "checking for isinf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -46663,7 +46321,6 @@ $as_echo_n "checking for isnan declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -46727,7 +46384,6 @@ $as_echo_n "checking for finite declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -46791,7 +46447,6 @@ $as_echo_n "checking for sincos declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -46851,7 +46506,6 @@ $as_echo_n "checking for fpclass declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -46915,7 +46569,6 @@ $as_echo_n "checking for qfpclass declaration... " >&6; 
}
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -46979,7 +46632,6 @@ $as_echo_n "checking for hypot declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -47038,7 +46690,6 @@ $as_echo_n "checking for float trig functions... " >&6; 
}
  $as_echo_n "(cached) " >&6
else

-
    ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -47095,7 +46746,6 @@ $as_echo_n "checking for float round functions... " 
>&6; }
  $as_echo_n "(cached) " >&6
else

-
    ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -47154,7 +46804,6 @@ $as_echo_n "checking for expf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -47218,7 +46867,6 @@ $as_echo_n "checking for isnanf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -47282,7 +46930,6 @@ $as_echo_n "checking for isinff declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -47346,7 +46993,6 @@ $as_echo_n "checking for atan2f declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -47406,7 +47052,6 @@ $as_echo_n "checking for fabsf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -47470,7 +47115,6 @@ $as_echo_n "checking for fmodf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -47530,7 +47174,6 @@ $as_echo_n "checking for frexpf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -47590,7 +47233,6 @@ $as_echo_n "checking for hypotf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -47650,7 +47292,6 @@ $as_echo_n "checking for ldexpf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -47710,7 +47351,6 @@ $as_echo_n "checking for logf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -47774,7 +47414,6 @@ $as_echo_n "checking for log10f declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -47838,7 +47477,6 @@ $as_echo_n "checking for modff declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -47898,7 +47536,6 @@ $as_echo_n "checking for modf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -47958,7 +47595,6 @@ $as_echo_n "checking for powf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -48018,7 +47654,6 @@ $as_echo_n "checking for sqrtf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -48082,7 +47717,6 @@ $as_echo_n "checking for sincosf declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -48142,7 +47776,6 @@ $as_echo_n "checking for finitef declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -48205,7 +47838,6 @@ $as_echo_n "checking for long double trig functions... " 
>&6; }
  $as_echo_n "(cached) " >&6
else

-
    ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -48262,7 +47894,6 @@ $as_echo_n "checking for long double round functions... " 
>&6; }
  $as_echo_n "(cached) " >&6
else

-
    ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -48321,7 +47952,6 @@ $as_echo_n "checking for isnanl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -48385,7 +48015,6 @@ $as_echo_n "checking for isinfl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -48449,7 +48078,6 @@ $as_echo_n "checking for atan2l declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -48509,7 +48137,6 @@ $as_echo_n "checking for expl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -48573,7 +48200,6 @@ $as_echo_n "checking for fabsl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -48637,7 +48263,6 @@ $as_echo_n "checking for fmodl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -48697,7 +48322,6 @@ $as_echo_n "checking for frexpl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -48757,7 +48381,6 @@ $as_echo_n "checking for hypotl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -48817,7 +48440,6 @@ $as_echo_n "checking for ldexpl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -48877,7 +48499,6 @@ $as_echo_n "checking for logl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -48941,7 +48562,6 @@ $as_echo_n "checking for log10l declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -49005,7 +48625,6 @@ $as_echo_n "checking for modfl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -49065,7 +48684,6 @@ $as_echo_n "checking for powl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -49125,7 +48743,6 @@ $as_echo_n "checking for sqrtl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -49189,7 +48806,6 @@ $as_echo_n "checking for sincosl declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -49249,7 +48865,6 @@ $as_echo_n "checking for finitel declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -49321,7 +48936,6 @@ $as_echo_n "checking for at_quick_exit declaration... " 
>&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -49379,7 +48993,6 @@ $as_echo_n "checking for quick_exit declaration... " 
>&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -49437,7 +49050,6 @@ $as_echo_n "checking for strtold declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -49495,7 +49107,6 @@ $as_echo_n "checking for strtof declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -49600,7 +49211,6 @@ if ${glibcxx_cv_func_acosl_use+:} false; then :
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=c
ac_cpp='$CPP $CPPFLAGS'
ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -49651,7 +49261,6 @@ if ${glibcxx_cv_func_asinl_use+:} false; then :
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=c
ac_cpp='$CPP $CPPFLAGS'
ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -49702,7 +49311,6 @@ if ${glibcxx_cv_func_atan2l_use+:} false; then :
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=c
ac_cpp='$CPP $CPPFLAGS'
ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -49753,7 +49361,6 @@ if ${glibcxx_cv_func_atanl_use+:} false; then :
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=c
ac_cpp='$CPP $CPPFLAGS'
ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -49804,7 +49411,6 @@ if ${glibcxx_cv_func_ceill_use+:} false; then :
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=c
ac_cpp='$CPP $CPPFLAGS'
ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -49855,7 +49461,6 @@ if ${glibcxx_cv_func_cosl_use+:} false; then :
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=c
ac_cpp='$CPP $CPPFLAGS'
ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -49906,7 +49511,6 @@ if ${glibcxx_cv_func_coshl_use+:} false; then :
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=c
ac_cpp='$CPP $CPPFLAGS'
ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -49957,7 +49561,6 @@ if ${glibcxx_cv_func_expl_use+:} false; then :
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=c
ac_cpp='$CPP $CPPFLAGS'
ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -50008,7 +49611,6 @@ if ${glibcxx_cv_func_fabsl_use+:} false; then :
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=c
ac_cpp='$CPP $CPPFLAGS'
ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -50059,7 +49661,6 @@ if ${glibcxx_cv_func_floorl_use+:} false; then :
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=c
ac_cpp='$CPP $CPPFLAGS'
ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -50110,7 +49711,6 @@ if ${glibcxx_cv_func_fmodl_use+:} false; then :
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=c
ac_cpp='$CPP $CPPFLAGS'
ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -50161,7 +49761,6 @@ if ${glibcxx_cv_func_frexpl_use+:} false; then :
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=c
ac_cpp='$CPP $CPPFLAGS'
ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -50212,7 +49811,6 @@ if ${glibcxx_cv_func_ldexpl_use+:} false; then :
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=c
ac_cpp='$CPP $CPPFLAGS'
ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -50263,7 +49861,6 @@ if ${glibcxx_cv_func_log10l_use+:} false; then :
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=c
ac_cpp='$CPP $CPPFLAGS'
ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -50314,7 +49911,6 @@ if ${glibcxx_cv_func_logl_use+:} false; then :
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=c
ac_cpp='$CPP $CPPFLAGS'
ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -50365,7 +49961,6 @@ if ${glibcxx_cv_func_modfl_use+:} false; then :
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=c
ac_cpp='$CPP $CPPFLAGS'
ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -50416,7 +50011,6 @@ if ${glibcxx_cv_func_powl_use+:} false; then :
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=c
ac_cpp='$CPP $CPPFLAGS'
ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -50467,7 +50061,6 @@ if ${glibcxx_cv_func_sinl_use+:} false; then :
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=c
ac_cpp='$CPP $CPPFLAGS'
ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -50518,7 +50111,6 @@ if ${glibcxx_cv_func_sinhl_use+:} false; then :
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=c
ac_cpp='$CPP $CPPFLAGS'
ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -50569,7 +50161,6 @@ if ${glibcxx_cv_func_sqrtl_use+:} false; then :
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=c
ac_cpp='$CPP $CPPFLAGS'
ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -50620,7 +50211,6 @@ if ${glibcxx_cv_func_tanl_use+:} false; then :
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=c
ac_cpp='$CPP $CPPFLAGS'
ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -50671,7 +50261,6 @@ if ${glibcxx_cv_func_tanhl_use+:} false; then :
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=c
ac_cpp='$CPP $CPPFLAGS'
ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -50722,7 +50311,6 @@ if ${glibcxx_cv_func_hypotl_use+:} false; then :
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=c
ac_cpp='$CPP $CPPFLAGS'
ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -50773,7 +50361,6 @@ if ${glibcxx_cv_func_ldexpf_use+:} false; then :
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=c
ac_cpp='$CPP $CPPFLAGS'
ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -50824,7 +50411,6 @@ if ${glibcxx_cv_func_modff_use+:} false; then :
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=c
ac_cpp='$CPP $CPPFLAGS'
ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -50875,7 +50461,6 @@ if ${glibcxx_cv_func_hypotf_use+:} false; then :
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=c
ac_cpp='$CPP $CPPFLAGS'
ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -50926,7 +50511,6 @@ if ${glibcxx_cv_func_frexpf_use+:} false; then :
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=c
ac_cpp='$CPP $CPPFLAGS'
ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -51971,7 +51555,6 @@ $as_echo "#define _GLIBCXX_X86_RDSEED 1" >>confdefs.h
# Check for other random number APIs


-
  ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -52046,7 +51629,6 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu



-
  ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -52122,7 +51704,6 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu

  # Do checks for resource limit functions.

-
  ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -52367,7 +51948,6 @@ $as_echo_n "checking for setenv declaration... " >&6; }
  $as_echo_n "(cached) " >&6
else

-
      ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -52460,7 +52040,6 @@ fi
  if test x$enable_libstdcxx_threads = xauto ||
     test x$enable_libstdcxx_threads = xyes; then

-
  ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -52675,7 +52254,6 @@ $as_echo_n "checking whether to build Filesystem TS support... 
" >&6; }
$as_echo "$enable_libstdcxx_filesystem_ts" >&6; }


-
  ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -54159,7 +53737,7 @@ $as_echo "$glibcxx_cv_libbacktrace_atomics" >&6; }
    CXXFLAGS='-O0 -S'

    cat > conftest.$ac_ext << EOF
-#line 54162 "configure"
+#line 53740 "configure"
#include <stddef.h>
int main()
{
@@ -54839,8 +54417,6 @@ _ACEOF

# For std::chrono formatters to use tm::tm_zone

-
-
  ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -54898,7 +54474,6 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu

# For src/c++11/shared_ptr.cc alignment.

-
  ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -54947,7 +54522,6 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu

# For using init_priority in ios_init.cc

-
  ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -54998,7 +54572,6 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu

# For __basic_file::native_handle()

-
  ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -55056,7 +54629,6 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu

# For std::text_encoding

-
  ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -55113,7 +54685,6 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu

# For std::is_debugger_present

-
  ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -55186,7 +54757,6 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu

# For std::print

-
  ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
diff --git a/libstdc++-v3/crossconfig.m4 b/libstdc++-v3/crossconfig.m4
index 2f4a6c6da87..c94f5719075 100644
--- a/libstdc++-v3/crossconfig.m4
+++ b/libstdc++-v3/crossconfig.m4
@@ -320,8 +320,7 @@ dnl GLIBCXX_CHECK_MATH_DECL
AC_DEFUN([GLIBCXX_CHECK_MATH_DECL], [
  AC_CACHE_CHECK([for $1 declaration],
    [glibcxx_cv_func_$1_use], [
-      AC_LANG_SAVE
-      AC_LANG_C
+      AC_LANG_PUSH([C])
      AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <math.h>
#ifdef HAVE_IEEEFP_H
diff --git a/libstdc++-v3/linkage.m4 b/libstdc++-v3/linkage.m4
index 222cc080f3c..8cce2dac70a 100644
--- a/libstdc++-v3/linkage.m4
+++ b/libstdc++-v3/linkage.m4
@@ -12,8 +12,7 @@ AC_DEFUN([GLIBCXX_CHECK_MATH_DECL_1], [
  AC_MSG_CHECKING([for $1 declaration])
  if test x${glibcxx_cv_func_$1_use+set} != xset; then
    AC_CACHE_VAL(glibcxx_cv_func_$1_use, [
-      AC_LANG_SAVE
-      AC_LANG_CPLUSPLUS
+      AC_LANG_PUSH([C++])
      AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <math.h>
                      #ifdef HAVE_IEEEFP_H
                      #include <ieeefp.h>
@@ -21,7 +20,7 @@ AC_DEFUN([GLIBCXX_CHECK_MATH_DECL_1], [
                     ]],
                     [[ $1(0);]])],
                      [glibcxx_cv_func_$1_use=yes], [glibcxx_cv_func_$1_use=no])
-      AC_LANG_RESTORE
+      AC_LANG_POP([C++])
    ])
  fi
  AC_MSG_RESULT($glibcxx_cv_func_$1_use)
@@ -57,13 +56,12 @@ AC_DEFUN([GLIBCXX_CHECK_MATH_DECLS_AND_LINKAGES_1], [
  define([funclist],patsubst($3,\(\w+\)\(\W*\),\1 ))dnl
  AC_MSG_CHECKING([for $1 functions])
  AC_CACHE_VAL(glibcxx_cv_func_$2_use, [
-    AC_LANG_SAVE
-    AC_LANG_CPLUSPLUS
+    AC_LANG_PUSH([C++])
    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <math.h>]],
                   patsubst(funclist,[\w+],[\& (0);]))],
                   [glibcxx_cv_func_$2_use=yes],
                   [glibcxx_cv_func_$2_use=no])
-    AC_LANG_RESTORE])
+    AC_LANG_POP([C++])])
  AC_MSG_RESULT($glibcxx_cv_func_$2_use)
  if test x$glibcxx_cv_func_$2_use = x"yes"; then
    AC_CHECK_FUNCS(funclist)
@@ -81,12 +79,11 @@ AC_DEFUN([GLIBCXX_CHECK_MATH_DECL_2], [
  AC_MSG_CHECKING([for $1 declaration])
  if test x${glibcxx_cv_func_$1_use+set} != xset; then
    AC_CACHE_VAL(glibcxx_cv_func_$1_use, [
-      AC_LANG_SAVE
-      AC_LANG_CPLUSPLUS
+      AC_LANG_PUSH([C++])
      AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <math.h>]],
                     [[ $1(0, 0);]])],
                     [glibcxx_cv_func_$1_use=yes], [glibcxx_cv_func_$1_use=no])
-      AC_LANG_RESTORE
+      AC_LANG_POP([C++])
    ])
  fi
  AC_MSG_RESULT($glibcxx_cv_func_$1_use)
@@ -122,12 +119,11 @@ AC_DEFUN([GLIBCXX_CHECK_MATH_DECL_3], [
  AC_MSG_CHECKING([for $1 declaration])
  if test x${glibcxx_cv_func_$1_use+set} != xset; then
    AC_CACHE_VAL(glibcxx_cv_func_$1_use, [
-      AC_LANG_SAVE
-      AC_LANG_CPLUSPLUS
+      AC_LANG_PUSH([C++])
      AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <math.h>]],
                     [[ $1(0, 0, 0);]])],
                     [glibcxx_cv_func_$1_use=yes], [glibcxx_cv_func_$1_use=no])
-      AC_LANG_RESTORE
+      AC_LANG_POP([C++])
    ])
  fi
  AC_MSG_RESULT($glibcxx_cv_func_$1_use)
@@ -167,12 +163,11 @@ AC_DEFUN([GLIBCXX_CHECK_STDLIB_DECL_AND_LINKAGE_1], [
  AC_MSG_CHECKING([for $1 declaration])
  if test x${glibcxx_cv_func_$1_use+set} != xset; then
    AC_CACHE_VAL(glibcxx_cv_func_$1_use, [
-      AC_LANG_SAVE
-      AC_LANG_CPLUSPLUS
+      AC_LANG_PUSH([C++])
      AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <stdlib.h>]],
                     [[ $1(0);]])],
                     [glibcxx_cv_func_$1_use=yes], [glibcxx_cv_func_$1_use=no])
-      AC_LANG_RESTORE
+      AC_LANG_POP([C++])
    ])
  fi
  AC_MSG_RESULT($glibcxx_cv_func_$1_use)
@@ -196,12 +191,11 @@ AC_DEFUN([GLIBCXX_CHECK_STDLIB_DECL_AND_LINKAGE_2], [
  AC_MSG_CHECKING([for $1 declaration])
  if test x${glibcxx_cv_func_$1_use+set} != xset; then
    AC_CACHE_VAL(glibcxx_cv_func_$1_use, [
-      AC_LANG_SAVE
-      AC_LANG_CPLUSPLUS
+      AC_LANG_PUSH([C++])
      AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <stdlib.h>]],
                     [[ $1(0, 0);]])],
                     [glibcxx_cv_func_$1_use=yes], [glibcxx_cv_func_$1_use=no])
-      AC_LANG_RESTORE
+      AC_LANG_POP([C++])
    ])
  fi
  AC_MSG_RESULT($glibcxx_cv_func_$1_use)
@@ -225,12 +219,11 @@ AC_DEFUN([GLIBCXX_CHECK_STDLIB_DECL_AND_LINKAGE_3], [
  AC_MSG_CHECKING([for $1 declaration])
  if test x${glibcxx_cv_func_$1_use+set} != xset; then
    AC_CACHE_VAL(glibcxx_cv_func_$1_use, [
-      AC_LANG_SAVE
-      AC_LANG_CPLUSPLUS
+      AC_LANG_PUSH([C++])
      AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <stdlib.h>]],
                     [[ $1(0, 0, 0);]])],
                     [glibcxx_cv_func_$1_use=yes], [glibcxx_cv_func_$1_use=no])
-      AC_LANG_RESTORE
+      AC_LANG_POP([C++])
    ])
  fi
  AC_MSG_RESULT($glibcxx_cv_func_$1_use)
--
2.43.0