From: Guus Sliepen <guus@tinc-vpn.org>
Date: Sun, 5 Jul 2015 14:03:03 +0000 (+0200)
Subject: Only check for -fno-strict-overflow if -fwrapv does not work.
X-Git-Tag: release-1.1pre12~72
X-Git-Url: https://tinc-vpn.org/git/browse?p=tinc;a=commitdiff_plain;h=96dd6e5f6c6f3f7717102fb3b38759b6cc0c0555

Only check for -fno-strict-overflow if -fwrapv does not work.
---

diff --git a/configure.ac b/configure.ac
index 89957ac2..b51c47b3 100644
--- a/configure.ac
+++ b/configure.ac
@@ -149,8 +149,8 @@ dnl No -fstack-protector-all because it doesn't work on all platforms or archite
 AC_ARG_ENABLE([hardening], AS_HELP_STRING([--disable-hardening], [disable compiler and linker hardening flags]))
 AS_IF([test "x$enable_hardening" != "xno"],
   [AX_CHECK_COMPILE_FLAG([-DFORTIFY_SOURCE=2], [CPPFLAGS="$CPPFLAGS -DFORTIFY_SOURCE=2"])
-   AX_CHECK_COMPILE_FLAG([-fno-strict-overflow], [CPPFLAGS="$CPPFLAGS -fno-strict-overflow"])
-   AX_CHECK_COMPILE_FLAG([-fwrapv], [CPPFLAGS="$CPPFLAGS -fwrapv"])
+   AX_CHECK_COMPILE_FLAG([-fwrapv], [CPPFLAGS="$CPPFLAGS -fwrapv"],
+   AX_CHECK_COMPILE_FLAG([-fno-strict-overflow], [CPPFLAGS="$CPPFLAGS -fno-strict-overflow"]))
    case $host_os in
      *mingw*)
        AX_CHECK_LINK_FLAG([-Wl,--dynamicbase], [LDFLAGS="$LDFLAGS -Wl,--dynamicbase"])