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configure: update AArch64 branch protection

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Use the new compiler flag syntax. This fixes a warning per build.
This also enables use of BTI in C/C++ code.
This commit is contained in:
Rémi Denis-Courmont 2019-11-29 20:05:42 +02:00
parent e4f4939e5c
commit 2b24b500a6
1 changed files with 8 additions and 8 deletions
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16
configure.ac
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@ -1694,15 +1694,15 @@ asm volatile("ptrue p0.s" ::: "p0");
])
AM_CONDITIONAL([HAVE_SVE], [test "${ac_cv_arm_sve}" = "yes"])
AC_ARG_ENABLE([pointer-auth],
AS_HELP_STRING([--disable-pointer-auth],
[disable ARMv8.3 Pointer Authentication (default auto)]),, [
AS_IF([test "${host_cpu}" = "aarch64"], [enable_ptrauth="yes"] ,[enable_ptrauth="no"])
AC_ARG_ENABLE([branch-protection],
AS_HELP_STRING([--disable-branch-protection],
[disable AArch64 branch protection (default auto)]),, [
AS_IF([test "${host_cpu}" = "aarch64"], [enable_brprot="yes"] ,[enable_brprot="no"])
])
AS_IF([test "${enable_ptrauth}" != "no"], [
AX_CHECK_COMPILE_FLAG([-msign-return-address=non-leaf], [
AX_APPEND_FLAG([-msign-return-address=non-leaf], [CFLAGS])
AX_APPEND_FLAG([-msign-return-address=non-leaf], [CXXFLAGS])
AS_IF([test "${enable_brprot}" != "no"], [
AX_CHECK_COMPILE_FLAG([-mbranch-protection=standard], [
AX_APPEND_FLAG([-mbranch-protection=standard], [CFLAGS])
AX_APPEND_FLAG([-mbranch-protection=standard], [CXXFLAGS])
])
])