diff --git a/configure b/configure index d03d798760a..4aa1730d8e1 100755 --- a/configure +++ b/configure @@ -1,5 +1,5 @@ #! /bin/sh -# From configure.in Revision: 59242 . +# From configure.in Revision: 59484 . # Guess values for system-dependent variables and create Makefiles. # Generated by GNU Autoconf 2.61 for python 2.6. # @@ -4430,6 +4430,10 @@ then if test "$CC" != 'g++' ; then STRICT_PROTO="-Wstrict-prototypes" fi + # For gcc 4.x we need to use -fwrapv so lets check if its supported + if "$CC" -v --help 2>/dev/null |grep -- -fwrapv > /dev/null; then + WRAP="-fwrapv" + fi case $ac_cv_prog_cc_g in yes) if test "$Py_DEBUG" = 'true' ; then @@ -4437,7 +4441,7 @@ then # debug builds. OPT="-g -Wall $STRICT_PROTO" else - OPT="-g -O3 -Wall $STRICT_PROTO" + OPT="-g $WRAP -O3 -Wall $STRICT_PROTO" fi ;; *)