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 |
7e73b1b |
dnl GNOME_COMPILE_WARNINGS
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7e73b1b |
dnl Turn on many useful compiler warnings
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7e73b1b |
dnl For now, only works on GCC
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7e73b1b |
AC_DEFUN([GNOME_COMPILE_WARNINGS],[
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7e73b1b |
dnl ******************************
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7e73b1b |
dnl More compiler warnings
|
|
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7e73b1b |
dnl ******************************
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7e73b1b |
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7e73b1b |
AC_ARG_ENABLE(compile-warnings,
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7e73b1b |
AC_HELP_STRING([--enable-compile-warnings=@<:@no/minimum/yes/maximum/error@:>@],
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7e73b1b |
[Turn on compiler warnings]),,
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7e73b1b |
[enable_compile_warnings="m4_default([$1],[yes])"])
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7e73b1b |
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7e73b1b |
warnCFLAGS=
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7e73b1b |
if test "x$GCC" != xyes; then
|
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7e73b1b |
enable_compile_warnings=no
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7e73b1b |
fi
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7e73b1b |
|
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7e73b1b |
warning_flags=
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7e73b1b |
realsave_CFLAGS="$CFLAGS"
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7e73b1b |
|
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7e73b1b |
case "$enable_compile_warnings" in
|
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7e73b1b |
no)
|
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7e73b1b |
warning_flags=
|
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7e73b1b |
;;
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7e73b1b |
minimum)
|
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7e73b1b |
warning_flags="-Wall"
|
|
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7e73b1b |
;;
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7e73b1b |
yes)
|
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7e73b1b |
warning_flags="-Wall -Wmissing-prototypes"
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7e73b1b |
;;
|
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7e73b1b |
maximum|error)
|
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7e73b1b |
warning_flags="-Wall -Wmissing-prototypes -Wnested-externs -Wpointer-arith"
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7e73b1b |
CFLAGS="$warning_flags $CFLAGS"
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7e73b1b |
for option in -Wno-sign-compare; do
|
|
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7e73b1b |
SAVE_CFLAGS="$CFLAGS"
|
|
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7e73b1b |
CFLAGS="$CFLAGS $option"
|
|
|
7e73b1b |
AC_MSG_CHECKING([whether gcc understands $option])
|
|
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7e73b1b |
AC_TRY_COMPILE([], [],
|
|
|
7e73b1b |
has_option=yes,
|
|
|
7e73b1b |
has_option=no,)
|
|
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7e73b1b |
CFLAGS="$SAVE_CFLAGS"
|
|
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7e73b1b |
AC_MSG_RESULT($has_option)
|
|
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7e73b1b |
if test $has_option = yes; then
|
|
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7e73b1b |
warning_flags="$warning_flags $option"
|
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7e73b1b |
fi
|
|
|
7e73b1b |
unset has_option
|
|
|
7e73b1b |
unset SAVE_CFLAGS
|
|
|
7e73b1b |
done
|
|
|
7e73b1b |
unset option
|
|
|
7e73b1b |
if test "$enable_compile_warnings" = "error" ; then
|
|
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7e73b1b |
warning_flags="$warning_flags -Werror"
|
|
|
7e73b1b |
fi
|
|
|
7e73b1b |
;;
|
|
|
7e73b1b |
*)
|
|
|
7e73b1b |
AC_MSG_ERROR(Unknown argument '$enable_compile_warnings' to --enable-compile-warnings)
|
|
|
7e73b1b |
;;
|
|
|
7e73b1b |
esac
|
|
|
7e73b1b |
CFLAGS="$realsave_CFLAGS"
|
|
|
7e73b1b |
AC_MSG_CHECKING(what warning flags to pass to the C compiler)
|
|
|
7e73b1b |
AC_MSG_RESULT($warning_flags)
|
|
|
7e73b1b |
|
|
|
7e73b1b |
AC_ARG_ENABLE(iso-c,
|
|
|
7e73b1b |
AC_HELP_STRING([--enable-iso-c],
|
|
|
7e73b1b |
[Try to warn if code is not ISO C ]),,
|
|
|
7e73b1b |
[enable_iso_c=no])
|
|
|
7e73b1b |
|
|
|
7e73b1b |
AC_MSG_CHECKING(what language compliance flags to pass to the C compiler)
|
|
|
7e73b1b |
complCFLAGS=
|
|
|
7e73b1b |
if test "x$enable_iso_c" != "xno"; then
|
|
|
7e73b1b |
if test "x$GCC" = "xyes"; then
|
|
|
7e73b1b |
case " $CFLAGS " in
|
|
|
7e73b1b |
*[\ \ ]-ansi[\ \ ]*) ;;
|
|
|
7e73b1b |
*) complCFLAGS="$complCFLAGS -ansi" ;;
|
|
|
7e73b1b |
esac
|
|
|
7e73b1b |
case " $CFLAGS " in
|
|
|
7e73b1b |
*[\ \ ]-pedantic[\ \ ]*) ;;
|
|
|
7e73b1b |
*) complCFLAGS="$complCFLAGS -pedantic" ;;
|
|
|
7e73b1b |
esac
|
|
|
7e73b1b |
fi
|
|
|
7e73b1b |
fi
|
|
|
7e73b1b |
AC_MSG_RESULT($complCFLAGS)
|
|
|
7e73b1b |
|
|
|
7e73b1b |
WARN_CFLAGS="$warning_flags $complCFLAGS"
|
|
|
7e73b1b |
AC_SUBST(WARN_CFLAGS)
|
|
|
7e73b1b |
])
|
|
|
7e73b1b |
|
|
|
7e73b1b |
dnl For C++, do basically the same thing.
|
|
|
7e73b1b |
|
|
|
7e73b1b |
AC_DEFUN([GNOME_CXX_WARNINGS],[
|
|
|
7e73b1b |
AC_ARG_ENABLE(cxx-warnings,
|
|
|
7e73b1b |
AC_HELP_STRING([--enable-cxx-warnings=@<:@no/minimum/yes@:>@]
|
|
|
7e73b1b |
[Turn on compiler warnings.]),,
|
|
|
7e73b1b |
[enable_cxx_warnings="m4_default([$1],[minimum])"])
|
|
|
7e73b1b |
|
|
|
7e73b1b |
AC_MSG_CHECKING(what warning flags to pass to the C++ compiler)
|
|
|
7e73b1b |
warnCXXFLAGS=
|
|
|
7e73b1b |
if test "x$GCC" != xyes; then
|
|
|
7e73b1b |
enable_compile_warnings=no
|
|
|
7e73b1b |
fi
|
|
|
7e73b1b |
if test "x$enable_cxx_warnings" != "xno"; then
|
|
|
7e73b1b |
if test "x$GCC" = "xyes"; then
|
|
|
7e73b1b |
case " $CXXFLAGS " in
|
|
|
7e73b1b |
*[\ \ ]-Wall[\ \ ]*) ;;
|
|
|
7e73b1b |
*) warnCXXFLAGS="-Wall -Wno-unused" ;;
|
|
|
7e73b1b |
esac
|
|
|
7e73b1b |
|
|
|
7e73b1b |
## -W is not all that useful. And it cannot be controlled
|
|
|
7e73b1b |
## with individual -Wno-xxx flags, unlike -Wall
|
|
|
7e73b1b |
if test "x$enable_cxx_warnings" = "xyes"; then
|
|
|
7e73b1b |
warnCXXFLAGS="$warnCXXFLAGS -Wshadow -Woverloaded-virtual"
|
|
|
7e73b1b |
fi
|
|
|
7e73b1b |
fi
|
|
|
7e73b1b |
fi
|
|
|
7e73b1b |
AC_MSG_RESULT($warnCXXFLAGS)
|
|
|
7e73b1b |
|
|
|
7e73b1b |
AC_ARG_ENABLE(iso-cxx,
|
|
|
7e73b1b |
AC_HELP_STRING([--enable-iso-cxx],
|
|
|
7e73b1b |
[Try to warn if code is not ISO C++ ]),,
|
|
|
7e73b1b |
[enable_iso_cxx=no])
|
|
|
7e73b1b |
|
|
|
7e73b1b |
AC_MSG_CHECKING(what language compliance flags to pass to the C++ compiler)
|
|
|
7e73b1b |
complCXXFLAGS=
|
|
|
7e73b1b |
if test "x$enable_iso_cxx" != "xno"; then
|
|
|
7e73b1b |
if test "x$GCC" = "xyes"; then
|
|
|
7e73b1b |
case " $CXXFLAGS " in
|
|
|
7e73b1b |
*[\ \ ]-ansi[\ \ ]*) ;;
|
|
|
7e73b1b |
*) complCXXFLAGS="$complCXXFLAGS -ansi" ;;
|
|
|
7e73b1b |
esac
|
|
|
7e73b1b |
|
|
|
7e73b1b |
case " $CXXFLAGS " in
|
|
|
7e73b1b |
*[\ \ ]-pedantic[\ \ ]*) ;;
|
|
|
7e73b1b |
*) complCXXFLAGS="$complCXXFLAGS -pedantic" ;;
|
|
|
7e73b1b |
esac
|
|
|
7e73b1b |
fi
|
|
|
7e73b1b |
fi
|
|
|
7e73b1b |
AC_MSG_RESULT($complCXXFLAGS)
|
|
|
7e73b1b |
|
|
|
7e73b1b |
WARN_CXXFLAGS="$CXXFLAGS $warnCXXFLAGS $complCXXFLAGS"
|
|
|
7e73b1b |
AC_SUBST(WARN_CXXFLAGS)
|
|
|
7e73b1b |
])
|