dnl This file is part of GNU mailutils. dnl Copyright (C) 2001, 2010 Free Software Foundation, Inc. dnl dnl This file is free software; as a special exception the author gives dnl unlimited permission to copy and/or distribute it, with or without dnl modifications, as long as this notice is preserved. dnl dnl GNU Mailutils is distributed in the hope that it will be useful, but dnl WITHOUT ANY WARRANTY, to the extent permitted by law; without even the dnl implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. dnl dnl Check for --enable-debug switch. When the switch is specified, add dnl -ggdb to CFLAGS and remove any optimization options from there. dnl AC_DEFUN([MU_DEBUG_MODE], [AC_ARG_ENABLE(debug, AC_HELP_STRING([--enable-debug], [enable debugging mode]), [mu_debug_mode=$enableval], [mu_debug_mode=maybe]) save_CC=$CC CC="$CC -Wall" AC_TRY_COMPILE([],[void main(){}], [CFLAGS="$CFLAGS -Wall"]) CC="$CC -Wdeclaration-after-statement" AC_TRY_COMPILE([],[void main(){}], [CFLAGS="$CFLAGS -Wdeclaration-after-statement"]) if test "$mu_debug_mode" != no; then CFLAGS=`echo $CFLAGS | sed 's/-O[[0-9]]//g'` AC_MSG_CHECKING([whether cc accepts -ggdb]) CC="$CC -ggdb" AC_TRY_COMPILE([],[void main(){}], [AC_MSG_RESULT(yes) CFLAGS="$CFLAGS -ggdb"], [AC_MSG_RESULT(no) CFLAGS="$CFLAGS -g"]) fi CC=$save_CC])