Sync with binutils: GCC: Pass --plugin to AR and RANLIB

Sync with binutils for building binutils with LTO:

50ad1254d50 GCC: Pass --plugin to AR and RANLIB

Detect GCC LTO plugin.  Pass --plugin to AR and RANLIB to support LTO
build.

ChangeLog:

	* Makefile.tpl (AR): Add @AR_PLUGIN_OPTION@
	(RANLIB): Add @RANLIB_PLUGIN_OPTION@.
	* configure.ac: Include config/gcc-plugin.m4.
	AC_SUBST AR_PLUGIN_OPTION and RANLIB_PLUGIN_OPTION.
	* libtool.m4 (_LT_CMD_OLD_ARCHIVE): Pass --plugin to AR and
	RANLIB if possible.
	* Makefile.in: Regenerated.
	* configure: Likewise.

config/ChangeLog:

	* gcc-plugin.m4 (GCC_PLUGIN_OPTION): New.

libiberty/ChangeLog:

	* Makefile.in (AR): Add @AR_PLUGIN_OPTION@
	(RANLIB): Add @RANLIB_PLUGIN_OPTION@.
	(configure_deps): Depend on ../config/gcc-plugin.m4.
	* configure.ac: AC_SUBST AR_PLUGIN_OPTION and
	RANLIB_PLUGIN_OPTION.
	* aclocal.m4: Regenerated.
	* configure: Likewise.

zlib/ChangeLog:

	* configure: Regenerated.

gcc/ChangeLog:

	* configure: Regenerate.

libatomic/ChangeLog:

	* configure: Regenerate.

libbacktrace/ChangeLog:

	* configure: Regenerate.

libcc1/ChangeLog:

	* configure: Regenerate.

libffi/ChangeLog:

	* configure: Regenerate.

libgfortran/ChangeLog:

	* configure: Regenerate.

libgm2/ChangeLog:

	* configure: Regenerate.

libgomp/ChangeLog:

	* configure: Regenerate.

libitm/ChangeLog:

	* configure: Regenerate.

libobjc/ChangeLog:

	* configure: Regenerate.

libphobos/ChangeLog:

	* configure: Regenerate.

libquadmath/ChangeLog:

	* configure: Regenerate.

libsanitizer/ChangeLog:

	* configure: Regenerate.

libssp/ChangeLog:

	* configure: Regenerate.

libstdc++-v3/ChangeLog:

	* configure: Regenerate.

libvtv/ChangeLog:

	* configure: Regenerate.

lto-plugin/ChangeLog:

	* configure: Regenerate.

1 files changed, 39 insertions, 0 deletions

diff --git a/configure b/configure
index 3269da9..4aa1ca2 100755
--- a/configure
+++ b/configure
@@ -620,6 +620,8 @@ GFORTRAN_FOR_TARGET
 GCC_FOR_TARGET
 CXX_FOR_TARGET
 CC_FOR_TARGET
+RANLIB_PLUGIN_OPTION
+AR_PLUGIN_OPTION
 GDCFLAGS
 READELF
 OTOOL
@@ -12949,6 +12951,43 @@ fi
 
 GDCFLAGS=${GDCFLAGS-${CFLAGS}}
 
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for -plugin option" >&5
+$as_echo_n "checking for -plugin option... " >&6; }
+
+plugin_names="liblto_plugin.so liblto_plugin-0.dll cyglto_plugin-0.dll"
+plugin_option=
+for plugin in $plugin_names; do
+  plugin_so=`${CC} ${CFLAGS} --print-prog-name $plugin`
+  if test x$plugin_so = x$plugin; then
+    plugin_so=`${CC} ${CFLAGS} --print-file-name $plugin`
+  fi
+  if test x$plugin_so != x$plugin; then
+    plugin_option="--plugin $plugin_so"
+    break
+  fi
+done
+if test -n "$plugin_option"; then
+  PLUGIN_OPTION="$plugin_option"
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $plugin_option" >&5
+$as_echo "$plugin_option" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+AR_PLUGIN_OPTION=
+RANLIB_PLUGIN_OPTION=
+if test -n "$PLUGIN_OPTION"; then
+  if $AR --help 2>&1 | grep -q "\--plugin"; then
+    AR_PLUGIN_OPTION="$PLUGIN_OPTION"
+  fi
+  if $RANLIB --help 2>&1 | grep -q "\--plugin"; then
+    RANLIB_PLUGIN_OPTION="$PLUGIN_OPTION"
+  fi
+fi
+
+
+
 # Target tools.
 
 # Check whether --with-build-time-tools was given.