Automatic date update in version.in

[platform/upstream/binutils.git] / bfd / warning.m4

diff --git a/bfd/warning.m4 b/bfd/warning.m4
index 38feb5f..de7e9e4 100644 (file)
--- a/bfd/warning.m4
+++ b/bfd/warning.m4
@@ -1,36 +1,73 @@
-dnl Common configure.in fragment
+dnl Common configure.ac 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],[
-WARN_CFLAGS="-W -Wall -Wstrict-prototypes -Wmissing-prototypes"
+# Set the 'development' global.
+. $srcdir/../bfd/development.sh
+
+GCC_WARN_CFLAGS="-W -Wall -Wstrict-prototypes -Wmissing-prototypes"
+AC_EGREP_CPP([^[0-3]$],[__GNUC__],,GCC_WARN_CFLAGS="$GCC_WARN_CFLAGS -Wshadow")
 
 AC_ARG_ENABLE(werror,
-  [  --enable-werror    treat compile warnings as errors],
+  [  --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])
 
-# Enable -Werror by default when using gcc
-if test "${GCC}" = yes -a -z "${ERROR_ON_WARNING}" ; then
+# 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.  Turn it off for releases.
+if test "${GCC}" = yes -a -z "${ERROR_ON_WARNING}" -a "$development" = true ; then
     ERROR_ON_WARNING=yes
 fi
 
 NO_WERROR=
 if test "${ERROR_ON_WARNING}" = yes ; then
-    WARN_CFLAGS="$WARN_CFLAGS -Werror"
+    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],
+[  --enable-build-warnings enable build-time compiler warnings],
 [case "${enableval}" in
-  yes) ;;
-  no)  WARN_CFLAGS="-w";;
+  yes) WARN_CFLAGS="${GCC_WARN_CFLAGS}";;
+  no)  if test "${GCC}" = yes ; then
+         WARN_CFLAGS="-w"
+       fi;;
   ,*)   t=`echo "${enableval}" | sed -e "s/,/ /g"`
-        WARN_CFLAGS="${WARN_CFLAGS} ${t}";;
+        WARN_CFLAGS="${GCC_WARN_CFLAGS} ${t}";;
   *,)   t=`echo "${enableval}" | sed -e "s/,/ /g"`
-        WARN_CFLAGS="${t} ${WARN_CFLAGS}";;
+        WARN_CFLAGS="${t} ${GCC_WARN_CFLAGS}";;
   *)    WARN_CFLAGS=`echo "${enableval}" | sed -e "s/,/ /g"`;;
 esac])