From: Timo Sirainen <tss@iki.fi>
Date: Fri, 16 Dec 2011 10:50:53 +0000 (+0200)
Subject: --enable-devel-checks: Use -fcatch-undefined-behavior -ftrapv with clang.
X-Git-Tag: 2.1.rc2~34
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=1d9ecfa7f060da746c5bfa1690c02cadea7423f0;p=thirdparty%2Fdovecot%2Fcore.git

--enable-devel-checks: Use -fcatch-undefined-behavior -ftrapv with clang.
---

diff --git a/configure.in b/configure.in
index 1bb6f0ec27..aa01f2ad7f 100644
--- a/configure.in
+++ b/configure.in
@@ -33,6 +33,7 @@ AC_ARG_ENABLE(devel-checks,
 AS_HELP_STRING([--enable-devel-checks], [Enable some extra expensive checks for developers]),
 	if test x$enableval = xyes; then
 		AC_DEFINE(DEBUG,, Build with extra debugging checks)
+		want_devel_checks=yes
 	fi)
 
 AC_ARG_ENABLE(asserts,
@@ -319,6 +320,12 @@ if test "x$ac_cv_c_compiler_gnu" = "xyes"; then
 	  CFLAGS="$old_cflags"
 	])
 fi
+if $CC -dM -E -x c /dev/null | grep __clang__ > /dev/null 2>&1; then
+  # clang specific options
+  if test "$want_devel_checks" = "yes"; then
+    CFLAGS="$CFLAGS -fcatch-undefined-behavior -ftrapv"
+  fi
+fi
 
 dnl **
 dnl ** just some generic stuff...