commit 962055d3c658e9b2e75ba4c3682c3639eea9aed8
author Stefan Krah <skrah@bytereef.org> Wed Sep 14 15:14:08 2011 +0200
committer Stefan Krah <skrah@bytereef.org> Wed Sep 14 15:14:08 2011 +0200
tree 633da41071778dff2562c08e05a3ec86c9a7c7df
parent d71bbf9fd5562ed50ebce993e1137ae7de0589f7

Issue #11149: recent versions of clang require the -fwrapv flag.

configure

diff --git a/configure b/configure
index 9d85e35..de53c09 100755
--- a/configure
+++ b/configure
@@ -5504,6 +5504,12 @@
         if "$CC" -v --help 2>/dev/null |grep -- -fwrapv > /dev/null; then
            WRAP="-fwrapv"
         fi
+
+        # Clang also needs -fwrapv
+        if test "$CC" = "clang" ; then
+            WRAP="-fwrapv"
+        fi
+
 	case $ac_cv_prog_cc_g in
 	yes)
 	    if test "$Py_DEBUG" = 'true' ; then