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Check for -mretpoline / -zretpolineplt support

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This commit is contained in:
Frank Denis 2018-01-04 18:04:39 +01:00
parent 5398407a5b
commit d76885d554
1 changed files with 4 additions and 0 deletions
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4
configure.ac
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@ -202,6 +202,9 @@ AC_CHECK_DEFINE([_FORTIFY_SOURCE], [], [
AX_CHECK_COMPILE_FLAG([-fvisibility=hidden],
[CFLAGS="$CFLAGS -fvisibility=hidden"])
AX_CHECK_COMPILE_FLAG([-mretpoline],
[CFLAGS="$CFLAGS -mretpoline"])
AS_CASE([$host_os], [cygwin*|mingw*|msys|pw32*|cegcc*], [ ], [
AX_CHECK_COMPILE_FLAG([-fPIC], [CFLAGS="$CFLAGS -fPIC"])
])
@ -323,6 +326,7 @@ AX_CHECK_COMPILE_FLAG([$CWFLAGS -Wwrite-strings], [CWFLAGS="$CWFLAGS -Wwrite-str
AX_CHECK_LINK_FLAG([-Wl,-z,relro], [LDFLAGS="$LDFLAGS -Wl,-z,relro"])
AX_CHECK_LINK_FLAG([-Wl,-z,now], [LDFLAGS="$LDFLAGS -Wl,-z,now"])
AX_CHECK_LINK_FLAG([-Wl,-z,noexecstack], [LDFLAGS="$LDFLAGS -Wl,-z,noexecstack"])
AX_CHECK_LINK_FLAG([-Wl,-z,retpolineplt], [LDFLAGS="$LDFLAGS -Wl,-z,retpolineplt"])
AC_MSG_CHECKING(for a broken clang + AVX512 combination)
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[