1 GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory.
2 # Local configure fragment for sysdeps/x86.
4 if test x"$enable_cet" = xyes; then
5 # Check if CET can be enabled.
6 AC_CACHE_CHECK(whether CET can be enabled,
7 libc_cv_x86_cet_available, [dnl
9 #if !defined __CET__ || __CET__ != 3
10 # error CET isn't available.
13 if AC_TRY_COMMAND(${CC-cc} -c $CFLAGS -fcf-protection -include cet.h conftest.c 1>&AS_MESSAGE_LOG_FD); then
14 libc_cv_x86_cet_available=yes
16 libc_cv_x86_cet_available=no
19 if test $libc_cv_x86_cet_available = yes; then
22 if test x"$enable_cet" = xdefault; then
25 AC_MSG_ERROR([$CC doesn't support CET])
29 if test $enable_cet = yes; then
30 # Check if assembler supports CET.
31 AC_CACHE_CHECK(whether $AS supports CET,
32 libc_cv_x86_cet_as, [dnl
33 cat > conftest.s <<EOF
36 if AC_TRY_COMMAND(${CC-cc} -c $CFLAGS conftest.s -o conftest.o 1>&AS_MESSAGE_LOG_FD); then
37 libc_cv_x86_cet_as=yes
42 if test $libc_cv_x86_cet_as = no; then
43 AC_MSG_ERROR([$AS doesn't support CET])
46 LIBC_CONFIG_VAR([enable-cet], [$enable_cet])