From: Christophe Lyon <christophe.l...@linaro.org>

The new arm-uclinuxfdpiceabi target behaves pretty much like
arm-linux-gnueabi. In order to enable the same set of features, we
have to update several configure scripts that generally match targets
like *-*-linux*: in most places, we add *-uclinux* where there is
already *-linux*, or uclinux* when there is already linux*.

In gcc/config.gcc and libgcc/config.host we use *-*-uclinuxfdpiceabi
because there is already a different behaviour for *-*uclinux* target.

In libtool.m4, we use uclinuxfdpiceabi in cases where ELF shared
libraries support is required, as uclinux does not guarantee that.

2019-XX-XX  Christophe Lyon  <christophe.l...@st.com>

        config/
        * futex.m4: Handle *-uclinux*.
        * tls.m4 (GCC_CHECK_TLS): Likewise.

        gcc/
        * config.gcc: Handle *-*-uclinuxfdpiceabi.

        libatomic/
        * configure.tgt: Handle arm*-*-uclinux*.
        * configure: Regenerate.

        libgcc/
        * config.host: Handle *-*-uclinuxfdpiceabi.

        libitm/
        * configure.tgt: Handle *-*-uclinux*.
        * configure: Regenerate.

        * libtool.m4: Handle uclinuxfdpiceabi.

Change-Id: Ib3a08905879ef917ee6c04c3988cf4ced7209fef

diff --git a/config/futex.m4 b/config/futex.m4
index 1b43829..c212438 100644
--- a/config/futex.m4
+++ b/config/futex.m4
@@ -9,7 +9,7 @@ AC_DEFUN([GCC_LINUX_FUTEX],[dnl
 GCC_ENABLE(linux-futex,default, ,[use the Linux futex system call],
           permit yes|no|default)
 case "$target" in
-  *-linux*)
+  *-linux* | *-uclinux*)
     case "$enable_linux_futex" in
       default)
        # If headers don't have gettid/futex syscalls definition, then
diff --git a/config/tls.m4 b/config/tls.m4
index 1a5fc59..7532305 100644
--- a/config/tls.m4
+++ b/config/tls.m4
@@ -76,7 +76,7 @@ AC_DEFUN([GCC_CHECK_TLS], [
          dnl Shared library options may depend on the host; this check
          dnl is only known to be needed for GNU/Linux.
          case $host in
-           *-*-linux*)
+           *-*-linux* | -*-uclinuxfdpic*)
              LDFLAGS="-shared -Wl,--no-undefined $LDFLAGS"
              ;;
          esac
diff --git a/gcc/config.gcc b/gcc/config.gcc
index 94a3608..69904fd 100644
--- a/gcc/config.gcc
+++ b/gcc/config.gcc
@@ -771,7 +771,7 @@ case ${target} in
 *-*-fuchsia*)
   native_system_header_dir=/include
   ;;
-*-*-linux* | frv-*-*linux* | *-*-kfreebsd*-gnu | *-*-gnu* | 
*-*-kopensolaris*-gnu)
+*-*-linux* | frv-*-*linux* | *-*-kfreebsd*-gnu | *-*-gnu* | 
*-*-kopensolaris*-gnu | *-*-uclinuxfdpiceabi)
   extra_options="$extra_options gnu-user.opt"
   gas=yes
   gnu_ld=yes
@@ -800,7 +800,7 @@ case ${target} in
     *-*-*android*)
       tm_defines="$tm_defines DEFAULT_LIBC=LIBC_BIONIC"
       ;;
-    *-*-*uclibc*)
+    *-*-*uclibc* | *-*-uclinuxfdpiceabi)
       tm_defines="$tm_defines DEFAULT_LIBC=LIBC_UCLIBC"
       ;;
     *-*-*musl*)
@@ -1198,7 +1198,7 @@ arm*-*-netbsdelf*)
        armv7*) target_cpu_cname="generic-armv7-a";;
        esac
        ;;
-arm*-*-linux-*)                        # ARM GNU/Linux with ELF
+arm*-*-linux-* | arm*-*-uclinuxfdpiceabi)
        tm_file="dbxelf.h elfos.h gnu-user.h linux.h linux-android.h 
glibc-stdint.h arm/elf.h arm/linux-gas.h arm/linux-elf.h"
        extra_options="${extra_options} linux-android.opt"
        case $target in
diff --git a/libatomic/configure b/libatomic/configure
index e6f5fb7..7bd01a1 100755
--- a/libatomic/configure
+++ b/libatomic/configure
@@ -6055,7 +6055,7 @@ irix5* | irix6* | nonstopux*)
   ;;
 
 # This must be Linux ELF.
-linux* | k*bsd*-gnu | kopensolaris*-gnu)
+linux* | k*bsd*-gnu | kopensolaris*-gnu | uclinuxfdpiceabi)
   lt_cv_deplibs_check_method=pass_all
   ;;
 
@@ -9135,7 +9135,7 @@ _LT_EOF
       archive_expsym_cmds='sed "s,^,_," $export_symbols 
>$output_objdir/$soname.expsym~$CC -shared $pic_flag $libobjs $deplibs 
$compiler_flags ${wl}-h,$soname 
${wl}--retain-symbols-file,$output_objdir/$soname.expsym 
${wl}--image-base,`expr ${RANDOM-$$} % 4096 / 2 \* 262144 + 1342177280` -o $lib'
       ;;
 
-    gnu* | linux* | tpf* | k*bsd*-gnu | kopensolaris*-gnu)
+    gnu* | linux* | tpf* | k*bsd*-gnu | kopensolaris*-gnu | uclinuxfdpiceabi)
       tmp_diet=no
       if test "$host_os" = linux-dietlibc; then
        case $cc_basename in
@@ -10666,7 +10666,12 @@ linux*oldld* | linux*aout* | linux*coff*)
   ;;
 
 # This must be Linux ELF.
-linux* | k*bsd*-gnu | kopensolaris*-gnu)
+
+# uclinux* changes (here and below) have been submitted to the libtool
+# project, but have not yet been accepted: they are GCC-local changes
+# for the time being.  (See
+# https://lists.gnu.org/archive/html/libtool-patches/2018-05/msg00000.html)
+linux* | k*bsd*-gnu | kopensolaris*-gnu | uclinuxfdpiceabi)
   version_type=linux
   need_lib_prefix=no
   need_version=no
diff --git a/libatomic/configure.tgt b/libatomic/configure.tgt
index 4a1294b..61778fb 100644
--- a/libatomic/configure.tgt
+++ b/libatomic/configure.tgt
@@ -124,7 +124,7 @@ case "${target}" in
        config_path="${config_path} linux/aarch64 posix"
        ;;
 
-  arm*-*-linux*)
+  arm*-*-linux* | arm*-*-uclinux*)
        # OS support for atomic primitives.
        config_path="${config_path} linux/arm posix"
        ;;
diff --git a/libgcc/config.host b/libgcc/config.host
index 1db5287..bfe5952 100644
--- a/libgcc/config.host
+++ b/libgcc/config.host
@@ -245,7 +245,7 @@ case ${host} in
   tmake_file="$tmake_file t-crtstuff-pic t-libgcc-pic t-eh-dw2-dip t-slibgcc 
t-slibgcc-fuchsia"
   extra_parts="crtbegin.o crtend.o"
   ;;
-*-*-linux* | frv-*-*linux* | *-*-kfreebsd*-gnu | *-*-gnu* | 
*-*-kopensolaris*-gnu)
+*-*-linux* | frv-*-*linux* | *-*-kfreebsd*-gnu | *-*-gnu* | 
*-*-kopensolaris*-gnu | *-*-uclinuxfdpiceabi)
   tmake_file="$tmake_file t-crtstuff-pic t-libgcc-pic t-eh-dw2-dip t-slibgcc 
t-slibgcc-gld t-slibgcc-elf-ver t-linux"
   extra_parts="crtbegin.o crtbeginS.o crtbeginT.o crtend.o crtendS.o"
   if test x$enable_vtable_verify = xyes; then
@@ -450,7 +450,7 @@ arm*-*-netbsdelf*)
            ;;
        esac
        ;;
-arm*-*-linux*)                 # ARM GNU/Linux with ELF
+arm*-*-linux* | arm*-*-uclinuxfdpiceabi)
        tmake_file="${tmake_file} arm/t-arm t-fixedpoint-gnu-prefix t-crtfm"
        tmake_file="${tmake_file} arm/t-elf arm/t-bpabi arm/t-linux-eabi 
t-slibgcc-libgcc"
        tm_file="$tm_file arm/bpabi-lib.h"
diff --git a/libitm/configure b/libitm/configure
old mode 100644
new mode 100755
index c466ae0..5315fab
--- a/libitm/configure
+++ b/libitm/configure
@@ -6731,7 +6731,7 @@ irix5* | irix6* | nonstopux*)
   ;;
 
 # This must be Linux ELF.
-linux* | k*bsd*-gnu | kopensolaris*-gnu)
+linux* | k*bsd*-gnu | kopensolaris*-gnu | uclinuxfdpiceabi)
   lt_cv_deplibs_check_method=pass_all
   ;;
 
@@ -9812,7 +9812,7 @@ _LT_EOF
       archive_expsym_cmds='sed "s,^,_," $export_symbols 
>$output_objdir/$soname.expsym~$CC -shared $pic_flag $libobjs $deplibs 
$compiler_flags ${wl}-h,$soname 
${wl}--retain-symbols-file,$output_objdir/$soname.expsym 
${wl}--image-base,`expr ${RANDOM-$$} % 4096 / 2 \* 262144 + 1342177280` -o $lib'
       ;;
 
-    gnu* | linux* | tpf* | k*bsd*-gnu | kopensolaris*-gnu)
+    gnu* | linux* | tpf* | k*bsd*-gnu | kopensolaris*-gnu | uclinuxfdpiceabi)
       tmp_diet=no
       if test "$host_os" = linux-dietlibc; then
        case $cc_basename in
@@ -11343,7 +11343,12 @@ linux*oldld* | linux*aout* | linux*coff*)
   ;;
 
 # This must be Linux ELF.
-linux* | k*bsd*-gnu | kopensolaris*-gnu)
+
+# uclinux* changes (here and below) have been submitted to the libtool
+# project, but have not yet been accepted: they are GCC-local changes
+# for the time being.  (See
+# https://lists.gnu.org/archive/html/libtool-patches/2018-05/msg00000.html)
+linux* | k*bsd*-gnu | kopensolaris*-gnu | uclinuxfdpiceabi)
   version_type=linux
   need_lib_prefix=no
   need_version=no
@@ -15003,7 +15008,12 @@ linux*oldld* | linux*aout* | linux*coff*)
   ;;
 
 # This must be Linux ELF.
-linux* | k*bsd*-gnu | kopensolaris*-gnu)
+
+# uclinux* changes (here and below) have been submitted to the libtool
+# project, but have not yet been accepted: they are GCC-local changes
+# for the time being.  (See
+# https://lists.gnu.org/archive/html/libtool-patches/2018-05/msg00000.html)
+linux* | k*bsd*-gnu | kopensolaris*-gnu | uclinuxfdpiceabi)
   version_type=linux
   need_lib_prefix=no
   need_version=no
@@ -16468,7 +16478,7 @@ fi
 
 
 case "$target" in
-  *-linux*)
+  *-linux* | *-uclinux*)
     case "$enable_linux_futex" in
       default)
        # If headers don't have gettid/futex syscalls definition, then
@@ -16593,7 +16603,7 @@ _ACEOF
 if ac_fn_c_try_link "$LINENO"; then :
   chktls_save_LDFLAGS="$LDFLAGS"
                          case $host in
-           *-*-linux*)
+           *-*-linux* | -*-uclinuxfdpic*)
              LDFLAGS="-shared -Wl,--no-undefined $LDFLAGS"
              ;;
          esac
diff --git a/libitm/configure.tgt b/libitm/configure.tgt
index 4c0b602..eea865d 100644
--- a/libitm/configure.tgt
+++ b/libitm/configure.tgt
@@ -127,7 +127,7 @@ config_path="$ARCH posix generic"
 
 # Other system configury
 case "${target}" in
-  *-*-linux*)
+  *-*-linux* | *-*-uclinux*)
        if test "$enable_linux_futex" = yes; then
          config_path="linux/$ARCH linux $config_path"
        fi
diff --git a/libtool.m4 b/libtool.m4
index 8966762..e194e89 100644
--- a/libtool.m4
+++ b/libtool.m4
@@ -2449,7 +2449,12 @@ linux*oldld* | linux*aout* | linux*coff*)
   ;;
 
 # This must be Linux ELF.
-linux* | k*bsd*-gnu | kopensolaris*-gnu)
+
+# uclinux* changes (here and below) have been submitted to the libtool
+# project, but have not yet been accepted: they are GCC-local changes
+# for the time being.  (See
+# https://lists.gnu.org/archive/html/libtool-patches/2018-05/msg00000.html)
+linux* | k*bsd*-gnu | kopensolaris*-gnu | uclinuxfdpiceabi)
   version_type=linux
   need_lib_prefix=no
   need_version=no
@@ -3089,7 +3094,7 @@ irix5* | irix6* | nonstopux*)
   ;;
 
 # This must be Linux ELF.
-linux* | k*bsd*-gnu | kopensolaris*-gnu)
+linux* | k*bsd*-gnu | kopensolaris*-gnu | uclinuxfdpiceabi)
   lt_cv_deplibs_check_method=pass_all
   ;;
 
@@ -4449,7 +4454,7 @@ _LT_EOF
       _LT_TAGVAR(archive_expsym_cmds, $1)='sed "s,^,_," $export_symbols 
>$output_objdir/$soname.expsym~$CC -shared $pic_flag $libobjs $deplibs 
$compiler_flags ${wl}-h,$soname 
${wl}--retain-symbols-file,$output_objdir/$soname.expsym 
${wl}--image-base,`expr ${RANDOM-$$} % 4096 / 2 \* 262144 + 1342177280` -o $lib'
       ;;
 
-    gnu* | linux* | tpf* | k*bsd*-gnu | kopensolaris*-gnu)
+    gnu* | linux* | tpf* | k*bsd*-gnu | kopensolaris*-gnu | uclinuxfdpiceabi)
       tmp_diet=no
       if test "$host_os" = linux-dietlibc; then
        case $cc_basename in
-- 
2.6.3

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