Fix gcc lto.

Also rebuild configure.

1 files changed, 52 insertions, 8 deletions

diff --git a/configure b/configure
index 46853a217..9e5c01851 100755
--- a/configure
+++ b/configure
@@ -1,5 +1,5 @@
 #! /bin/sh
-# From configure.ac b947fde.
+# From configure.ac b7b45b7c3.
 # Guess values for system-dependent variables and create Makefiles.
 # Generated by GNU Autoconf 2.69.
 #
@@ -5153,17 +5153,19 @@ rm -f core conftest.err conftest.$ac_objext \
 if test "$enable_lto" != "no" ; then
 
 	OLD_CFLAGS="$CFLAGS"
-	CFLAGS="$CFLAGS -flto"
+	CFLAGS="$CFLAGS -flto -ffat-lto-objects -Werror"
 
 	OLD_LDFLAGS="$LDFLAGS"
-	LDFLAGS="$LDFLAGS -flto"
+	LDFLAGS="$LDFLAGS -flto -ffat-lto-objects"
 
-	{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC supports -flto" >&5
-$as_echo_n "checking whether $CC supports -flto... " >&6; }
+	{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC supports -flto -ffat-lto-objects" >&5
+$as_echo_n "checking whether $CC supports -flto -ffat-lto-objects... " >&6; }
 	if test "$cross_compiling" = yes; then :
 
 			{ $as_echo "$as_me:${as_lineno-$LINENO}: result: guessing no" >&5
 $as_echo "guessing no" >&6; }
+			CFLAGS="$OLD_CFLAGS"
+			LDFLAGS="$OLD_LDFLAGS"
 
 
 else
@@ -5171,6 +5173,8 @@ else
 /* end confdefs.h.  */
 
 			int main(int argc, char **argv){
+				(void)argc;
+				(void)argv;
 				return 0;
 			}
 
@@ -5179,13 +5183,53 @@ if ac_fn_c_try_run "$LINENO"; then :
 
 			{ $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
 $as_echo "yes" >&6; }
+			CFLAGS="$OLD_CFLAGS -flto -ffat-lto-objects"
+			LDFLAGS="$OLD_LDFLAGS -flto -ffat-lto-objects"
 
 else
 
 			{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
 $as_echo "no" >&6; }
-			CFLAGS="$OLD_CFLAGS"
-			LDFLAGS="$OLD_LDFLAGS"
+			CFLAGS="$OLD_CFLAGS -flto"
+			LDFLAGS="$OLD_LDFLAGS -flto"
+			{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC supports -flto" >&5
+$as_echo_n "checking whether $CC supports -flto... " >&6; }
+			if test "$cross_compiling" = yes; then :
+
+					{ $as_echo "$as_me:${as_lineno-$LINENO}: result: guessing no" >&5
+$as_echo "guessing no" >&6; }
+					CFLAGS="$OLD_CFLAGS"
+					LDFLAGS="$OLD_LDFLAGS"
+
+
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+					int main(int argc, char **argv){
+						(void)argc;
+						(void)argv;
+						return 0;
+					}
+
+_ACEOF
+if ac_fn_c_try_run "$LINENO"; then :
+
+					{ $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+
+else
+
+					{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+					CFLAGS="$OLD_CFLAGS"
+					LDFLAGS="$OLD_LDFLAGS"
+
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
 
 fi
 rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
@@ -8346,7 +8390,7 @@ Linux* )
 	LIBS="$LIBS -ldl"
 	;;
 FreeBSD*)
-	CPPFLAGS="$CPPFLAGS -D__FREEBSD__"
+	CPPFLAGS="$CPPFLAGS -D__FREEBSD__ -fvisibility=hidden"
 	;;
 NetBSD*)
 	CPPFLAGS="$CPPFLAGS -D__NETBSD__"