* configure.ac (BUILD_CONFIG): Redirect output to /dev/null.

[pf3gnuchains/gcc-fork.git] / configure.ac

diff --git a/configure.ac b/configure.ac
index 43d6d5d..c46fc4d 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -528,6 +528,7 @@ case "${target}" in
     noconfigdirs="$noconfigdirs target-newlib target-libiberty target-libgloss ${libgcj} target-libmudflap"
     ;;
   *-*-rtems*)
+    skipdirs="${skipdirs} target-libiberty"
     noconfigdirs="$noconfigdirs target-libgloss ${libgcj}"
     ;;
     # The tpf target doesn't support gdb yet.
@@ -1735,7 +1736,6 @@ if test x"$enable_lto" = x"yes" ; then
       elf_nextscn (0, 0);
       elf_strptr (0, 0, 0);
       elf_getident (0, 0);
-      elf_getshdrstrndx (0, 0);
       elf_begin (0, 0, 0);
       elf_ndxscn (0);
       elf_end (0);
@@ -1744,6 +1744,27 @@ if test x"$enable_lto" = x"yes" ; then
       [AC_MSG_RESULT([no]); enable_lto=no; libelflibs= ; libelfinc= ]
     )
 
+    # Check for elf_getshdrstrndx or elf_getshstrndx.  The latter's flavor
+    # is determined in gcc/configure.ac.
+    if test x"$enable_lto" = x"yes" ; then
+      AC_MSG_CHECKING([for elf_getshdrstrndx])
+      AC_TRY_LINK(
+        [#include <libelf.h>],[
+       elf_getshdrstrndx (0, 0);
+        ],
+        [AC_MSG_RESULT([yes]);],
+        [AC_MSG_RESULT([no]);
+        AC_MSG_CHECKING([for elf_getshstrndx])
+         AC_TRY_LINK(
+           [#include <libelf.h>],[
+          elf_getshstrndx (0, 0);
+           ],
+           [AC_MSG_RESULT([yes]);],
+           [AC_MSG_RESULT([no]); enable_lto=no; libelflibs= ; libelfinc= ]
+         )]
+      )
+    fi
+
     # If we couldn't enable LTO and the user forced it, emit an error.
     if test x"$enable_lto" = x"no" \
        && test x"$default_enable_lto" != x"yes" ; then
@@ -2699,7 +2720,7 @@ else
        mv conftest.o conftest.o.g0 &&
        ${CC} -c -g conftest.c &&
        mv conftest.o conftest.o.g &&
-       ${srcdir}/contrib/compare-debug conftest.o.g0 conftest.o.g; then
+       ${srcdir}/contrib/compare-debug conftest.o.g0 conftest.o.g > /dev/null 2>&1; then
       :
     else
       BUILD_CONFIG=