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authorRainer Orth <ro@CeBiTec.Uni-Bielefeld.DE>2014-05-15 09:52:37 +0000
committerRainer Orth <ro@gcc.gnu.org>2014-05-15 09:52:37 +0000
commita2555c65a0f29b846038229b2f55adbb1c550ac3 (patch)
treeea0beae0da2a6e8d4a4227bc5aeea890d1d26bb9 /lto-plugin/configure.ac
parentc4622c2bed1f740f996ca7f2ed5300a4d14da143 (diff)
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Check for -static-libgcc before use (PR lto/60981)
PR lto/60981 * configure.ac: Check for -static-libgcc. * configure: Regenerate. From-SVN: r210465
Diffstat (limited to 'lto-plugin/configure.ac')
-rw-r--r--lto-plugin/configure.ac14
1 files changed, 13 insertions, 1 deletions
diff --git a/lto-plugin/configure.ac b/lto-plugin/configure.ac
index 4003ae6..a5f1774d 100644
--- a/lto-plugin/configure.ac
+++ b/lto-plugin/configure.ac
@@ -7,9 +7,21 @@ AM_MAINTAINER_MODE
AC_PROG_CC
AC_SYS_LARGEFILE
ACX_PROG_CC_WARNING_OPTS([-Wall], [ac_lto_plugin_warn_cflags])
+
+# Check whether -static-libgcc is supported.
+saved_LDFLAGS="$LDFLAGS"
+LDFLAGS="$LDFLAGS -static-libgcc"
+AC_MSG_CHECKING([for -static-libgcc])
+AC_LINK_IFELSE([
+ int main() {}], [have_static_libgcc=yes], [have_static_libgcc=no])
+AC_MSG_RESULT($have_static_libgcc);
+LDFLAGS="$saved_LDFLAGS"
# Need -Wc to get it through libtool.
-if test "x$GCC" = xyes; then ac_lto_plugin_ldflags="-Wc,-static-libgcc"; fi
+if test "x$have_static_libgcc" = xyes; then
+ ac_lto_plugin_ldflags="-Wc,-static-libgcc"
+fi
AC_SUBST(ac_lto_plugin_ldflags)
+
AM_PROG_LIBTOOL
ACX_LT_HOST_FLAGS
AC_SUBST(target_noncanonical)