diff options
| author | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2018-12-27 15:58:23 +0000 |
|---|---|---|
| committer | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2018-12-27 15:58:23 +0000 |
| commit | 25ead03a3712d57df2208fe82f3d316eb8faeaf6 (patch) | |
| tree | eb6ebccbeffba879a7cf9cbaa29daeeb73d8e049 /sysdeps/x86/configure.ac | |
| parent | bf9f3c5bced2d3a5fb782b5a7de1008d8ca1425c (diff) | |
| parent | 963c37d5c0eb62b38f8764b23931c0dcdd497a13 (diff) | |
Merge commit 'refs/top-bases/t/faccessat' into t/faccessat
Diffstat (limited to 'sysdeps/x86/configure.ac')
| -rw-r--r-- | sysdeps/x86/configure.ac | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/sysdeps/x86/configure.ac b/sysdeps/x86/configure.ac new file mode 100644 index 0000000000..a909b073af --- /dev/null +++ b/sysdeps/x86/configure.ac @@ -0,0 +1,46 @@ +GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory. +# Local configure fragment for sysdeps/x86. + +if test x"$enable_cet" = xyes; then + # Check if CET can be enabled. + AC_CACHE_CHECK(whether CET can be enabled, + libc_cv_x86_cet_available, [dnl +cat > conftest.c <<EOF +#if !defined __CET__ || __CET__ != 3 +# error CET isn't available. +#endif +EOF + if AC_TRY_COMMAND(${CC-cc} -c $CFLAGS -fcf-protection -include cet.h conftest.c 1>&AS_MESSAGE_LOG_FD); then + libc_cv_x86_cet_available=yes + else + libc_cv_x86_cet_available=no + fi + rm -rf conftest*]) + if test $libc_cv_x86_cet_available = yes; then + enable_cet=yes + else + if test x"$enable_cet" = xdefault; then + enable_cet=no + else + AC_MSG_ERROR([$CC doesn't support CET]) + fi + fi +fi +if test $enable_cet = yes; then + # Check if assembler supports CET. + AC_CACHE_CHECK(whether $AS supports CET, + libc_cv_x86_cet_as, [dnl +cat > conftest.s <<EOF + incsspd %ecx +EOF + if AC_TRY_COMMAND(${CC-cc} -c $CFLAGS conftest.s -o conftest.o 1>&AS_MESSAGE_LOG_FD); then + libc_cv_x86_cet_as=yes + else + libc_cv_x86_cet_as=no + fi + rm -rf conftest*]) + if test $libc_cv_x86_cet_as = no; then + AC_MSG_ERROR([$AS doesn't support CET]) + fi +fi +LIBC_CONFIG_VAR([enable-cet], [$enable_cet]) |