I want to add --enable-debug switch to my configure script, which replaces default "-g O3" compiler options with "-g3 -O0". My attempt is obviously incorrect: AC_ARG_ENABLE( debug, [ --enable-debug, Enable debug build], [ CXXFLAGS="${CXXFLAGS} -g3 -O0"] ) This gives compiler command line: "-g O3 g3 -O0" instead of desired "-g3 -O0" Also, automake manual doesn't recommend to touch CXXFLAGS variable, leaving it completely to user. What is correct way to do this? _______________________________________________ Autoconf mailing list Autoconf@xxxxxxx http://lists.gnu.org/mailman/listinfo/autoconf