Sync top level files with gcc.

	Import these patches from the GCC mainline:

	2016-01-12  Andris Pavenis  <andris.pavenis@iki.fi>

	* configure.ac: Enable LTO for DJGPP
	* configure: Regenerate

	2016-01-24  Mikhail Maltsev  <maltsevm@gmail.com>

	PR bootstrap/69329
	* Makefile.tpl (BASE_FLAGS_TO_PASS): Add LSAN_OPTIONS.
	* Makefile.in: Regenerate.

	2016-01-25  Aditya Kumar  <aditya.k7@samsung.com>
	            Sebastian Pop  <s.pop@samsung.com>

	* Makefile.in: Regenerate.
	* Makefile.tpl: Export ISLVER.
	* configure: Regenerate.
	* config/isl.m4: Detect isl-0.15.

	2016-01-29  Sebastian Pop  <s.pop@samsung.com>

	* config/isl.m4: Add comments about isl-0.16.
	* configure: Regenerate.

1 files changed, 35 insertions, 6 deletions

diff --git a/configure b/configure
index 19eb2a4a44a..89c863ca97c 100755
--- a/configure
+++ b/configure
@@ -650,6 +650,7 @@ extra_linker_plugin_flags
 extra_linker_plugin_configure_flags
 islinc
 isllibs
+islver
 poststage1_ldflags
 poststage1_libs
 stage1_ldflags
@@ -6020,8 +6021,8 @@ $as_echo "$as_me: WARNING: using in-tree isl, disabling version check" >&2;}
     LDFLAGS="${_isl_saved_LDFLAGS} ${isllibs} ${gmplibs}"
     LIBS="${_isl_saved_LIBS} -lisl -lgmp"
 
-    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for isl 0.15 (or deprecated 0.14)" >&5
-$as_echo_n "checking for isl 0.15 (or deprecated 0.14)... " >&6; }
+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for isl 0.16, 0.15, or deprecated 0.14" >&5
+$as_echo_n "checking for isl 0.16, 0.15, or deprecated 0.14... " >&6; }
     cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 #include <isl/ctx.h>
@@ -6044,8 +6045,36 @@ rm -f core conftest.err conftest.$ac_objext \
 $as_echo "$gcc_cv_isl" >&6; }
 
     if test "${gcc_cv_isl}" = no ; then
-      { $as_echo "$as_me:${as_lineno-$LINENO}: result: recommended isl version is 0.15, minimum required isl version 0.14 is deprecated" >&5
-$as_echo "recommended isl version is 0.15, minimum required isl version 0.14 is deprecated" >&6; }
+      { $as_echo "$as_me:${as_lineno-$LINENO}: result: recommended isl version is 0.16 or 0.15, the minimum required isl version 0.14 is deprecated" >&5
+$as_echo "recommended isl version is 0.16 or 0.15, the minimum required isl version 0.14 is deprecated" >&6; }
+    fi
+
+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for isl 0.16 or 0.15" >&5
+$as_echo_n "checking for isl 0.16 or 0.15... " >&6; }
+    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <isl/schedule.h>
+int
+main ()
+{
+isl_options_set_schedule_serialize_sccs (NULL, 0);
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+  ac_has_isl_options_set_schedule_serialize_sccs=yes
+else
+  ac_has_isl_options_set_schedule_serialize_sccs=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+    { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_has_isl_options_set_schedule_serialize_sccs" >&5
+$as_echo "$ac_has_isl_options_set_schedule_serialize_sccs" >&6; }
+
+    if test x"$ac_has_isl_options_set_schedule_serialize_sccs" = x"yes"; then
+      islver="0.15"
+
     fi
 
     CFLAGS=$_isl_saved_CFLAGS
@@ -6127,7 +6156,7 @@ if test $target_elf = yes; then :
 else
   if test x"$default_enable_lto" = x"yes" ; then
     case $target in
-      *-apple-darwin9* | *-cygwin* | *-mingw*) ;;
+      *-apple-darwin9* | *-cygwin* | *-mingw* | *djgpp*) ;;
       # On other non-ELF platforms, LTO has yet to be validated.
       *) enable_lto=no ;;
     esac
@@ -6138,7 +6167,7 @@ else
   # warn during gcc/ subconfigure; unless you're bootstrapping with
   # -flto it won't be needed until after installation anyway.
     case $target in
-      *-cygwin* | *-mingw* | *-apple-darwin*) ;;
+      *-cygwin* | *-mingw* | *-apple-darwin* | *djgpp*) ;;
       *) if test x"$enable_lto" = x"yes"; then
 	as_fn_error "LTO support is not enabled for this target." "$LINENO" 5
         fi