Enable building libmpx with Intel CET

libmpx/
	* Makefile.in: Regenerate.
	* acinclude.m4: Add enable.m4 and cet.m4.
	* configure: Regenerate.
	* configure.ac: Set CET_FLAGS. Update XCFLAGS.
	* mpxrt/Makefile.am: Update libmpx_la_CFLAGS.
	* mpxrt/Makefile.in: Regenerate.
	* mpxwrap/Makefile.am: Add AM_CFLAGS. Update
	libmpxwrappers_la_CFLAGS.
	* mpxwrap/Makefile.in: Regenerate.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@254900 138bc75d-0d04-0410-961f-82ee72b054a4

9 files changed, 106 insertions, 9 deletions

diff --git a/libmpx/ChangeLog b/libmpx/ChangeLog
index 3edc2d499c6f..9ae654270b77 100644
--- a/libmpx/ChangeLog
+++ b/libmpx/ChangeLog
@@ -1,3 +1,15 @@
+ 2017-11-17  Igor Tsimbalist  <igor.v.tsimbalist@intel.com>
+
+	 * Makefile.in: Regenerate.
+	 * acinclude.m4: Add enable.m4 and cet.m4.
+	 * configure: Regenerate.
+	 * configure.ac: Set CET_FLAGS. Update XCFLAGS.
+	 * mpxrt/Makefile.am: Update libmpx_la_CFLAGS.
+	 * mpxrt/Makefile.in: Regenerate.
+	 * mpxwrap/Makefile.am: Add AM_CFLAGS. Update
+	 libmpxwrappers_la_CFLAGS.
+	 * mpxwrap/Makefile.in: Regenerate.
+
 2017-01-30  Jakub Jelinek  <jakub@redhat.com>
 
 	* mpxrt/mpxrt-utils.h (__mpxrt_stop): New prototype.
diff --git a/libmpx/Makefile.in b/libmpx/Makefile.in
index 5e58b7299bfb..358956c917b2 100644
--- a/libmpx/Makefile.in
+++ b/libmpx/Makefile.in
@@ -66,7 +66,8 @@ am__aclocal_m4_deps = $(top_srcdir)/../config/acx.m4 \
 	$(top_srcdir)/../ltoptions.m4 $(top_srcdir)/../ltsugar.m4 \
 	$(top_srcdir)/../ltversion.m4 $(top_srcdir)/../lt~obsolete.m4 \
 	$(top_srcdir)/acinclude.m4 $(top_srcdir)/../libtool.m4 \
-	$(top_srcdir)/configure.ac
+	$(top_srcdir)/../config/enable.m4 \
+	$(top_srcdir)/../config/cet.m4 $(top_srcdir)/configure.ac
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
 	$(ACLOCAL_M4)
 am__CONFIG_DISTCLEAN_FILES = config.status config.cache config.log \
diff --git a/libmpx/acinclude.m4 b/libmpx/acinclude.m4
index 38e0808ad933..c432ae660a17 100644
--- a/libmpx/acinclude.m4
+++ b/libmpx/acinclude.m4
@@ -2,6 +2,8 @@ dnl ----------------------------------------------------------------------
 dnl This whole bit snagged from libgfortran.
 
 sinclude(../libtool.m4)
+sinclude(../config/enable.m4)
+sinclude(../config/cet.m4)
 dnl The lines below arrange for aclocal not to bring an installed
 dnl libtool.m4 into aclocal.m4, while still arranging for automake to
 dnl add a definition of LIBTOOL to Makefile.in.
diff --git a/libmpx/configure b/libmpx/configure
index 853993a522f1..7bc68b81e4f4 100644
--- a/libmpx/configure
+++ b/libmpx/configure
@@ -732,6 +732,7 @@ with_pic
 enable_fast_install
 with_gnu_ld
 enable_libtool_lock
+enable_cet
 with_gcc_major_version_only
 '
       ac_precious_vars='build_alias
@@ -1372,6 +1373,8 @@ Optional Features:
   --enable-fast-install[=PKGS]
                           optimize for fast installation [default=yes]
   --disable-libtool-lock  avoid locking (might break parallel builds)
+  --enable-cet            enable Intel CET in target libraries
+                          [default=default]
 
 Optional Packages:
   --with-PACKAGE[=ARG]    use PACKAGE [ARG=yes]
@@ -11234,7 +11237,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 11237 "configure"
+#line 11240 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -11340,7 +11343,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 11343 "configure"
+#line 11346 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -11581,6 +11584,75 @@ CC="$lt_save_CC"
 
 
 XCFLAGS="-Wall -Wextra"
+# Add CET specific flags if CET is enabled
+ # Check whether --enable-cet was given.
+if test "${enable_cet+set}" = set; then :
+  enableval=$enable_cet;
+      case "$enableval" in
+       yes|no|default) ;;
+       *) as_fn_error "Unknown argument to enable/disable cet" "$LINENO" 5 ;;
+                          esac
+
+else
+  enable_cet=default
+fi
+
+
+case "$host" in
+  i[34567]86-*-linux* | x86_64-*-linux*)
+    case "$enable_cet" in
+      default)
+	# Check if assembler supports CET.
+	cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+asm ("setssbsy");
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  enable_cet=yes
+else
+  enable_cet=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+	;;
+      yes)
+	# Check if assembler supports CET.
+	cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+asm ("setssbsy");
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+else
+  as_fn_error "assembler with CET support is required for --enable-cet" "$LINENO" 5
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+	;;
+    esac
+    ;;
+  *)
+    enable_cet=no
+    ;;
+esac
+if test x$enable_cet = xyes; then
+  CET_FLAGS="-fcf-protection -mcet"
+fi
+
+XCFLAGS="$XCFLAGS $CET_FLAGS"
+
 
 
 if test "${multilib}" = "yes"; then
diff --git a/libmpx/configure.ac b/libmpx/configure.ac
index baa882b16b04..dc0c2a83809c 100644
--- a/libmpx/configure.ac
+++ b/libmpx/configure.ac
@@ -117,6 +117,10 @@ AC_SUBST(enable_shared)
 AC_SUBST(enable_static)
 
 XCFLAGS="-Wall -Wextra"
+# Add CET specific flags if CET is enabled
+GCC_CET_FLAGS(CET_FLAGS)
+XCFLAGS="$XCFLAGS $CET_FLAGS"
+
 AC_SUBST(XCFLAGS)
 
 if test "${multilib}" = "yes"; then
diff --git a/libmpx/mpxrt/Makefile.am b/libmpx/mpxrt/Makefile.am
index 41c806f97228..0dd0bed4e237 100644
--- a/libmpx/mpxrt/Makefile.am
+++ b/libmpx/mpxrt/Makefile.am
@@ -11,7 +11,7 @@ toolexeclib_LTLIBRARIES = libmpx.la
 
 libmpx_la_SOURCES = mpxrt.c mpxrt-utils.c
 
-libmpx_la_CFLAGS = -fPIC
+libmpx_la_CFLAGS = -fPIC $(XCFLAGS)
 libmpx_la_DEPENDENCIES = libmpx.map
 libmpx_la_LDFLAGS = -Wl,--version-script=$(srcdir)/libmpx.map $(link_libmpx) \
                     -version-info `grep -v '^\#' $(srcdir)/libtool-version`
diff --git a/libmpx/mpxrt/Makefile.in b/libmpx/mpxrt/Makefile.in
index 4c55d20c13eb..17e0ac52b04a 100644
--- a/libmpx/mpxrt/Makefile.in
+++ b/libmpx/mpxrt/Makefile.in
@@ -62,7 +62,8 @@ am__aclocal_m4_deps = $(top_srcdir)/../config/acx.m4 \
 	$(top_srcdir)/../ltoptions.m4 $(top_srcdir)/../ltsugar.m4 \
 	$(top_srcdir)/../ltversion.m4 $(top_srcdir)/../lt~obsolete.m4 \
 	$(top_srcdir)/acinclude.m4 $(top_srcdir)/../libtool.m4 \
-	$(top_srcdir)/configure.ac
+	$(top_srcdir)/../config/enable.m4 \
+	$(top_srcdir)/../config/cet.m4 $(top_srcdir)/configure.ac
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
 	$(ACLOCAL_M4)
 mkinstalldirs = $(SHELL) $(top_srcdir)/../mkinstalldirs
@@ -256,7 +257,7 @@ ACLOCAL_AMFLAGS = -I $(top_srcdir) -I $(top_srcdir)/config
 @LIBMPX_SUPPORTED_TRUE@AM_CFLAGS = $(XCFLAGS)
 @LIBMPX_SUPPORTED_TRUE@toolexeclib_LTLIBRARIES = libmpx.la
 @LIBMPX_SUPPORTED_TRUE@libmpx_la_SOURCES = mpxrt.c mpxrt-utils.c
-@LIBMPX_SUPPORTED_TRUE@libmpx_la_CFLAGS = -fPIC
+@LIBMPX_SUPPORTED_TRUE@libmpx_la_CFLAGS = -fPIC $(XCFLAGS)
 @LIBMPX_SUPPORTED_TRUE@libmpx_la_DEPENDENCIES = libmpx.map
 @LIBMPX_SUPPORTED_TRUE@libmpx_la_LDFLAGS = -Wl,--version-script=$(srcdir)/libmpx.map $(link_libmpx) \
 @LIBMPX_SUPPORTED_TRUE@                    -version-info `grep -v '^\#' $(srcdir)/libtool-version`
diff --git a/libmpx/mpxwrap/Makefile.am b/libmpx/mpxwrap/Makefile.am
index d9e84ae66219..6dba674fff1e 100644
--- a/libmpx/mpxwrap/Makefile.am
+++ b/libmpx/mpxwrap/Makefile.am
@@ -1,11 +1,13 @@
 ALCLOCAL_AMFLAGS = -I .. -I ../config
 AM_CPPFLAGS = -I $(top_srcdir)
+AM_CFLAGS = $(XCFLAGS)
 
 # May be used by toolexeclibdir.
 gcc_version := $(shell @get_gcc_base_ver@ $(top_srcdir)/../gcc/BASE-VER)
 
 libmpxwrappers_la_CFLAGS = -fcheck-pointer-bounds -mmpx -fno-chkp-check-read \
-			   -fno-chkp-check-write -fno-chkp-use-wrappers -fPIC
+			   -fno-chkp-check-write -fno-chkp-use-wrappers \
+			   -fPIC $(XCFLAGS)
 libmpxwrappers_la_DEPENDENCIES = libmpxwrappers.map
 libmpxwrappers_la_LDFLAGS = -Wl,--version-script=$(srcdir)/libmpxwrappers.map \
                -version-info `grep -v '^\#' $(srcdir)/libtool-version`
diff --git a/libmpx/mpxwrap/Makefile.in b/libmpx/mpxwrap/Makefile.in
index 1b929b9f5981..6693a09a088a 100644
--- a/libmpx/mpxwrap/Makefile.in
+++ b/libmpx/mpxwrap/Makefile.in
@@ -62,7 +62,8 @@ am__aclocal_m4_deps = $(top_srcdir)/../config/acx.m4 \
 	$(top_srcdir)/../ltoptions.m4 $(top_srcdir)/../ltsugar.m4 \
 	$(top_srcdir)/../ltversion.m4 $(top_srcdir)/../lt~obsolete.m4 \
 	$(top_srcdir)/acinclude.m4 $(top_srcdir)/../libtool.m4 \
-	$(top_srcdir)/configure.ac
+	$(top_srcdir)/../config/enable.m4 \
+	$(top_srcdir)/../config/cet.m4 $(top_srcdir)/configure.ac
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
 	$(ACLOCAL_M4)
 mkinstalldirs = $(SHELL) $(top_srcdir)/../mkinstalldirs
@@ -249,11 +250,13 @@ top_builddir = @top_builddir@
 top_srcdir = @top_srcdir@
 ALCLOCAL_AMFLAGS = -I .. -I ../config
 AM_CPPFLAGS = -I $(top_srcdir)
+AM_CFLAGS = $(XCFLAGS)
 
 # May be used by toolexeclibdir.
 gcc_version := $(shell @get_gcc_base_ver@ $(top_srcdir)/../gcc/BASE-VER)
 libmpxwrappers_la_CFLAGS = -fcheck-pointer-bounds -mmpx -fno-chkp-check-read \
-			   -fno-chkp-check-write -fno-chkp-use-wrappers -fPIC
+			   -fno-chkp-check-write -fno-chkp-use-wrappers \
+			   -fPIC $(XCFLAGS)
 
 libmpxwrappers_la_DEPENDENCIES = libmpxwrappers.map
 libmpxwrappers_la_LDFLAGS = -Wl,--version-script=$(srcdir)/libmpxwrappers.map \