On Solaris 8 and Cygwin 1.7.2 I'm seeing this error:
../gllib/math.h:620: error: 'frexpl' was not declared in this scope
Again, the problem is that REPLACE_FREXPL is set when the function does
not exist. This fixes it.
2010-04-04 Bruno Haible <br...@clisp.org>
frexpl: Fix a C++ test error on Solaris 8 and Cygwin.
* m4/frexpl.m4 (gl_FUNC_FREXPL, gl_FUNC_FREXPL_NO_LIBM): When the
function is not declared, set HAVE_DECL_FREXPL to 0, instead of setting
REPLACE_FREXPL to 1.
* doc/posix-functions/frexpl.texi: Update documentation.
--- m4/frexpl.m4.orig Sun Apr 4 22:10:26 2010
+++ m4/frexpl.m4 Sun Apr 4 22:00:06 2010
@@ -7,54 +7,56 @@
AC_DEFUN([gl_FUNC_FREXPL],
[
AC_REQUIRE([gl_MATH_H_DEFAULTS])
+ dnl Check whether it's declared.
+ dnl MacOS X 10.3 has frexpl() in libc but doesn't declare it in <math.h>.
+ AC_CHECK_DECL([frexpl], , [HAVE_DECL_FREXPL=0], [#include <math.h>])
FREXPL_LIBM=
- AC_CACHE_CHECK([whether frexpl() can be used without linking with libm],
- [gl_cv_func_frexpl_no_libm],
- [
- AC_TRY_LINK([#include <math.h>
- long double x;],
- [int e; return frexpl (x, &e) > 0;],
- [gl_cv_func_frexpl_no_libm=yes],
- [gl_cv_func_frexpl_no_libm=no])
- ])
- if test $gl_cv_func_frexpl_no_libm = no; then
- AC_CACHE_CHECK([whether frexpl() can be used with libm],
- [gl_cv_func_frexpl_in_libm],
+ if test $HAVE_DECL_FREXPL = 1; then
+ AC_CACHE_CHECK([whether frexpl() can be used without linking with libm],
+ [gl_cv_func_frexpl_no_libm],
[
- save_LIBS="$LIBS"
- LIBS="$LIBS -lm"
AC_TRY_LINK([#include <math.h>
long double x;],
[int e; return frexpl (x, &e) > 0;],
- [gl_cv_func_frexpl_in_libm=yes],
- [gl_cv_func_frexpl_in_libm=no])
- LIBS="$save_LIBS"
+ [gl_cv_func_frexpl_no_libm=yes],
+ [gl_cv_func_frexpl_no_libm=no])
])
- if test $gl_cv_func_frexpl_in_libm = yes; then
- FREXPL_LIBM=-lm
+ if test $gl_cv_func_frexpl_no_libm = no; then
+ AC_CACHE_CHECK([whether frexpl() can be used with libm],
+ [gl_cv_func_frexpl_in_libm],
+ [
+ save_LIBS="$LIBS"
+ LIBS="$LIBS -lm"
+ AC_TRY_LINK([#include <math.h>
+ long double x;],
+ [int e; return frexpl (x, &e) > 0;],
+ [gl_cv_func_frexpl_in_libm=yes],
+ [gl_cv_func_frexpl_in_libm=no])
+ LIBS="$save_LIBS"
+ ])
+ if test $gl_cv_func_frexpl_in_libm = yes; then
+ FREXPL_LIBM=-lm
+ fi
+ fi
+ if test $gl_cv_func_frexpl_no_libm = yes \
+ || test $gl_cv_func_frexpl_in_libm = yes; then
+ save_LIBS="$LIBS"
+ LIBS="$LIBS $FREXPL_LIBM"
+ gl_FUNC_FREXPL_WORKS
+ LIBS="$save_LIBS"
+ case "$gl_cv_func_frexpl_works" in
+ *yes) gl_func_frexpl=yes ;;
+ *) gl_func_frexpl=no; REPLACE_FREXPL=1; FREXPL_LIBM= ;;
+ esac
+ else
+ gl_func_frexpl=no
+ fi
+ if test $gl_func_frexpl = yes; then
+ AC_DEFINE([HAVE_FREXPL], [1],
+ [Define if the frexpl() function is available.])
fi
fi
- if test $gl_cv_func_frexpl_no_libm = yes \
- || test $gl_cv_func_frexpl_in_libm = yes; then
- save_LIBS="$LIBS"
- LIBS="$LIBS $FREXPL_LIBM"
- gl_FUNC_FREXPL_WORKS
- LIBS="$save_LIBS"
- case "$gl_cv_func_frexpl_works" in
- *yes) gl_func_frexpl=yes ;;
- *) gl_func_frexpl=no; REPLACE_FREXPL=1; FREXPL_LIBM= ;;
- esac
- else
- gl_func_frexpl=no
- fi
- if test $gl_func_frexpl = yes; then
- AC_DEFINE([HAVE_FREXPL], [1],
- [Define if the frexpl() function is available.])
- dnl Also check whether it's declared.
- dnl MacOS X 10.3 has frexpl() in libc but doesn't declare it in <math.h>.
- AC_CHECK_DECL([frexpl], , [HAVE_DECL_FREXPL=0], [#include <math.h>])
- else
- HAVE_DECL_FREXPL=0
+ if test $HAVE_DECL_FREXPL = 0 || test $gl_func_frexpl = no; then
AC_LIBOBJ([frexpl])
fi
AC_SUBST([FREXPL_LIBM])
@@ -63,34 +65,36 @@
AC_DEFUN([gl_FUNC_FREXPL_NO_LIBM],
[
AC_REQUIRE([gl_MATH_H_DEFAULTS])
- AC_CACHE_CHECK([whether frexpl() can be used without linking with libm],
- [gl_cv_func_frexpl_no_libm],
- [
- AC_TRY_LINK([#include <math.h>
- long double x;],
- [int e; return frexpl (x, &e) > 0;],
- [gl_cv_func_frexpl_no_libm=yes],
- [gl_cv_func_frexpl_no_libm=no])
- ])
- if test $gl_cv_func_frexpl_no_libm = yes; then
- gl_FUNC_FREXPL_WORKS
- case "$gl_cv_func_frexpl_works" in
- *yes) gl_func_frexpl_no_libm=yes ;;
- *) gl_func_frexpl_no_libm=no; REPLACE_FREXPL=1 ;;
- esac
- else
- gl_func_frexpl_no_libm=no
- dnl Set REPLACE_FREXPL here because the system may have frexpl in libm.
- REPLACE_FREXPL=1
+ dnl Check whether it's declared.
+ dnl MacOS X 10.3 has frexpl() in libc but doesn't declare it in <math.h>.
+ AC_CHECK_DECL([frexpl], , [HAVE_DECL_FREXPL=0], [#include <math.h>])
+ if test $HAVE_DECL_FREXPL = 1; then
+ AC_CACHE_CHECK([whether frexpl() can be used without linking with libm],
+ [gl_cv_func_frexpl_no_libm],
+ [
+ AC_TRY_LINK([#include <math.h>
+ long double x;],
+ [int e; return frexpl (x, &e) > 0;],
+ [gl_cv_func_frexpl_no_libm=yes],
+ [gl_cv_func_frexpl_no_libm=no])
+ ])
+ if test $gl_cv_func_frexpl_no_libm = yes; then
+ gl_FUNC_FREXPL_WORKS
+ case "$gl_cv_func_frexpl_works" in
+ *yes) gl_func_frexpl_no_libm=yes ;;
+ *) gl_func_frexpl_no_libm=no; REPLACE_FREXPL=1 ;;
+ esac
+ else
+ gl_func_frexpl_no_libm=no
+ dnl Set REPLACE_FREXPL here because the system may have frexpl in libm.
+ REPLACE_FREXPL=1
+ fi
+ if test $gl_func_frexpl_no_libm = yes; then
+ AC_DEFINE([HAVE_FREXPL_IN_LIBC], [1],
+ [Define if the frexpl() function is available in libc.])
+ fi
fi
- if test $gl_func_frexpl_no_libm = yes; then
- AC_DEFINE([HAVE_FREXPL_IN_LIBC], [1],
- [Define if the frexpl() function is available in libc.])
- dnl Also check whether it's declared.
- dnl MacOS X 10.3 has frexpl() in libc but doesn't declare it in <math.h>.
- AC_CHECK_DECL([frexpl], , [HAVE_DECL_FREXPL=0], [#include <math.h>])
- else
- HAVE_DECL_FREXPL=0
+ if test $HAVE_DECL_FREXPL = 0 || test $gl_func_frexpl_no_libm = no; then
AC_LIBOBJ([frexpl])
fi
])
--- doc/posix-functions/frexpl.texi.orig Sun Apr 4 22:10:26 2010
+++ doc/posix-functions/frexpl.texi Sun Apr 4 21:47:41 2010
@@ -12,6 +12,9 @@
This function is missing on some platforms:
FreeBSD 5.2.1, NetBSD 3.0, OpenBSD 3.8, HP-UX 11, IRIX 6.5, Solaris 9, Cygwin,
Interix 3.5.
@item
+This function is not declared on some platforms:
+MacOS X 10.3.
+...@item
This function does not work on finite numbers on some platforms:
MacOS X 10.4/PowerPC, AIX 5.1, BeOS.
@item
