configure: use -fstack-protector-strong if available

diff --git a/configure.ac b/configure.ac
index c312d2373f8dd5e4a8f0651e8da65d8c3919a803..1262c147a31e36d5f92177bc561e24dc7daaccec 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -74,6 +74,7 @@ AX_CFLAGS_GCC_OPTION([-Wfatal-errors])
 AX_CFLAGS_GCC_OPTION([-Wcast-align])
 AX_CFLAGS_GCC_OPTION([-Winline])
 AX_CFLAGS_GCC_OPTION([-fstack-protector])
+AX_CFLAGS_GCC_OPTION([-fstack-protector-strong])
 AX_CFLAGS_GCC_OPTION([-fno-omit-frame-pointer])
 AX_CFLAGS_GCC_OPTION([-D_FORTIFY_SOURCE=2])
 AX_CFLAGS_GCC_OPTION([-Wno-unused-parameter])