-
-
dnl SG_COMPILE_FLAGS
dnl Turn on many useful compiler warnings
dnl For now, only sets extra flags on GCC
+
+dnl Copyright (C) 2004, 2005, 2007. Martin Quinson. All rights reserved.
+
+dnl This file is part of the SimGrid project. This is free software:
+dnl You can redistribute and/or modify it under the terms of the
+dnl GNU LGPL (v2.1) licence.
+
+
AC_DEFUN([SG_COMPILE_FLAGS],[
AC_ARG_ENABLE(compile-warnings,
AS_HELP_STRING([--enable-compile-warnings], [use compiler warnings (default=no, unless in maintainer mode)]),
AS_HELP_STRING([--disable-compile-optimizations], [use compiler optimizations (default=yes, unless if CFLAGS is explicitly set)]),
enable_compile_optimizations=$enableval,enable_compile_optimizations=auto)
- if test "x$cflags_set" != "xyes" ; then
- # if user didn't specify CFLAGS explicitely
-
# AC PROG CC tests whether -g is accepted.
- # Cool, but it also tries to set -O2. I don't want it with gcc
- saveCFLAGS="$CFLAGS"
- CFLAGS=
- case " $saveCFLAGS " in
- *-g*) CFLAGS="-g" ;;
- esac
- case " $saveCFLAGS " in
- *-O2*) test "x$CC" = xgcc || CFLAGS="$CFLAGS -O2" ;;
+ # Cool, but it also tries to set -O2 and -g.
+ # I don't want it with gcc, but -O3 and -g2, and optimization only when asked by user
+ case $CC in
+ *gcc)
+ if test "$CFLAGS" = "-g -O2" ; then
+ CFLAGS="-g3"
+ fi
+ if test "$CXXFLAGS" = "-g -O2" ; then
+ CXXFLAGS="-g3"
+ fi
+ if test "$GCJFLAGS" = "-g -O2" ; then
+ CXXFLAGS="-g3"
+ fi;;
esac
-
- # damn AC PROG CC, why did you set -O??
- CFLAGS="-g"
- fi
if test "x$enable_compile_warnings" = "xyes" ; then
AC_MSG_CHECKING(the warning flags for this compiler)
if test "x$enable_compile_warnings" = "xyes"; then
warnCFLAGS=`echo $warnCFLAGS -Wmissing-prototypes -Wmissing-declarations \
-Wpointer-arith -Wchar-subscripts -Wcomment -Wformat -Wwrite-strings \
- -Wno-unused-function \
+ -Wno-unused-function -Wno-strict-aliasing \
-Werror \
| sed 's/ +/ /g'`
# -Wno-unused-variable -Wno-unused-label
