dnl Common configure.in fragment dnl dnl Copyright (C) 2012-2014 Free Software Foundation, Inc. dnl dnl This file is free software; you can redistribute it and/or modify dnl it under the terms of the GNU General Public License as published by dnl the Free Software Foundation; either version 3 of the License, or dnl (at your option) any later version. dnl dnl This program is distributed in the hope that it will be useful, dnl but WITHOUT ANY WARRANTY; without even the implied warranty of dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the dnl GNU General Public License for more details. dnl dnl You should have received a copy of the GNU General Public License dnl along with this program; see the file COPYING3. If not see dnl <http://www.gnu.org/licenses/>. dnl AC_DEFUN([AM_BINUTILS_WARNINGS],[ GCC_WARN_CFLAGS="-W -Wall -Wstrict-prototypes -Wmissing-prototypes" AC_EGREP_CPP([^[0-3]$],[__GNUC__],,GCC_WARN_CFLAGS="$GCC_WARN_CFLAGS -Wshadow") AC_ARG_ENABLE(werror, [ --enable-werror treat compile warnings as errors], [case "${enableval}" in yes | y) ERROR_ON_WARNING="yes" ;; no | n) ERROR_ON_WARNING="no" ;; *) AC_MSG_ERROR(bad value ${enableval} for --enable-werror) ;; esac]) # Disable -Wformat by default when using gcc on mingw case "${host}" in *-*-mingw32*) if test "${GCC}" = yes -a -z "${ERROR_ON_WARNING}" ; then GCC_WARN_CFLAGS="$GCC_WARN_CFLAGS -Wno-format" fi ;; *) ;; esac # Enable -Werror by default when using gcc if test "${GCC}" = yes -a -z "${ERROR_ON_WARNING}" ; then ERROR_ON_WARNING=yes fi NO_WERROR= if test "${ERROR_ON_WARNING}" = yes ; then GCC_WARN_CFLAGS="$GCC_WARN_CFLAGS -Werror" NO_WERROR="-Wno-error" fi if test "${GCC}" = yes ; then WARN_CFLAGS="${GCC_WARN_CFLAGS}" fi AC_ARG_ENABLE(build-warnings, [ --enable-build-warnings enable build-time compiler warnings], [case "${enableval}" in yes) WARN_CFLAGS="${GCC_WARN_CFLAGS}";; no) if test "${GCC}" = yes ; then WARN_CFLAGS="-w" fi;; ,*) t=`echo "${enableval}" | sed -e "s/,/ /g"` WARN_CFLAGS="${GCC_WARN_CFLAGS} ${t}";; *,) t=`echo "${enableval}" | sed -e "s/,/ /g"` WARN_CFLAGS="${t} ${GCC_WARN_CFLAGS}";; *) WARN_CFLAGS=`echo "${enableval}" | sed -e "s/,/ /g"`;; esac]) if test x"$silent" != x"yes" && test x"$WARN_CFLAGS" != x""; then echo "Setting warning flags = $WARN_CFLAGS" 6>&1 fi AC_SUBST(WARN_CFLAGS) AC_SUBST(NO_WERROR) ])