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Enable building libatomic with Intel CET

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libatomic/
	* configure.ac: Set CET_FLAGS, update XCFLAGS.
	* acinclude.m4: Add cet.m4 and enable.m4.
	* configure: Regenerate.
	* Makefile.in: Likewise.
	* testsuite/Makefile.in: Likewise.

From-SVN: r254893
This commit is contained in:
Igor Tsimbalist 2017-11-17 22:18:15 +01:00 committed by Igor Tsimbalist
parent 44685d378f
commit efc643e90d
6 changed files with 92 additions and 4 deletions
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8
libatomic/ChangeLog
View File

@ -1,3 +1,11 @@
2017-11-17 Igor Tsimbalist <igor.v.tsimbalist@intel.com>
* configure.ac: Set CET_FLAGS, update XCFLAGS.
* acinclude.m4: Add cet.m4 and enable.m4.
* configure: Regenerate.
* Makefile.in: Likewise.
* testsuite/Makefile.in: Likewise.
2017-10-20 Richard Earnshaw <rearnsha@arm.com>
* Makefile.am: (IFUNC_OPTIONS): Set the architecture to

3
libatomic/Makefile.in
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@ -75,7 +75,8 @@ 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 \

2
libatomic/acinclude.m4
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@ -632,6 +632,8 @@ AC_MSG_NOTICE(versioning on shared library symbols is $enable_symvers)
dnl ----------------------------------------------------------------------
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.

76
libatomic/configure vendored
View File

@ -764,6 +764,7 @@ with_gnu_ld
enable_libtool_lock
enable_maintainer_mode
enable_symvers
enable_cet
with_gcc_major_version_only
'
ac_precious_vars='build_alias
@ -1410,6 +1411,8 @@ Optional Features:
(and sometimes confusing) to the casual installer
--enable-symvers=STYLE enables symbol versioning of the shared library
[default=yes]
--enable-cet enable Intel CET in target libraries
[default=default]
Optional Packages:
--with-PACKAGE[=ARG] use PACKAGE [ARG=yes]
@ -11115,7 +11118,7 @@ else
lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
lt_status=$lt_dlunknown
cat > conftest.$ac_ext <<_LT_EOF
#line 11118 "configure"
#line 11121 "configure"
#include "confdefs.h"
#if HAVE_DLFCN_H
@ -11221,7 +11224,7 @@ else
lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
lt_status=$lt_dlunknown
cat > conftest.$ac_ext <<_LT_EOF
#line 11224 "configure"
#line 11227 "configure"
#include "confdefs.h"
#if HAVE_DLFCN_H
@ -15225,6 +15228,75 @@ if test "x$GCC" = "xyes"; then
XCFLAGS="$XCFLAGS -Wall -Werror"
fi
# 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 $CET_FLAGS"
XCFLAGS="$XCFLAGS $XPCFLAGS"

4
libatomic/configure.ac
View File

@ -238,6 +238,10 @@ if test "x$GCC" = "xyes"; then
XCFLAGS="$XCFLAGS -Wall -Werror"
fi
# Add CET specific flags if CET is enabled
GCC_CET_FLAGS(CET_FLAGS)
XCFLAGS="$XCFLAGS $CET_FLAGS"
XCFLAGS="$XCFLAGS $XPCFLAGS"
AC_SUBST(config_path)

3
libatomic/testsuite/Makefile.in
View File

@ -64,7 +64,8 @@ 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