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Dnl handle various error-related things
dnl Thomas Vander Stichele <thomas@apestaart.org>
dnl Tim-Philipp Müller <tim centricular net>
dnl Last modification: 2008-02-18
dnl AG_GST_SET_ERROR_CFLAGS([ADD-WERROR])
dnl AG_GST_SET_ERROR_CXXFLAGS([ADD-WERROR])
dnl AG_GST_SET_LEVEL_DEFAULT([IS-CVS-VERSION])
dnl Sets ERROR_CFLAGS to something the compiler will accept.
dnl AC_SUBST them so they are available in Makefile
dnl -Wall is added if it is supported
dnl -Werror is added if ADD-WERROR is not "no"
dnl These flags can be overridden at make time:
dnl make ERROR_CFLAGS=
AC_DEFUN([AG_GST_SET_ERROR_CFLAGS],
[
AC_REQUIRE([AC_PROG_CC])
AC_REQUIRE([AS_COMPILER_FLAG])
dnl if we support -Wall, set it unconditionally
AS_COMPILER_FLAG(-Wall,
ERROR_CFLAGS="-Wall",
ERROR_CFLAGS="")
dnl if asked for, add -Werror if supported
if test "x$1" != "xno"
then
AS_COMPILER_FLAG(-Werror, ERROR_CFLAGS="$ERROR_CFLAGS -Werror")
dnl if -Werror isn't suported, try -errwarn=%all (Sun Forte case)
if test "x$ERROR_CFLAGS" == "x"
then
AS_COMPILER_FLAG([-errwarn=%all], [
ERROR_CFLAGS="-errwarn=%all"
dnl try -errwarn=%all,no%E_EMPTY_DECLARATION,
dnl no%E_STATEMENT_NOT_REACHED,no%E_ARGUEMENT_MISMATCH,
dnl no%E_MACRO_REDEFINED (Sun Forte case)
dnl For Forte we need disable "empty declaration" warning produced by un-needed semicolon
dnl "statement not reached" disabled because there is g_assert_not_reached () in some places
dnl "macro redefined" because of gst/gettext.h
dnl FIXME: is it really supposed to be 'ARGUEMENT' and not 'ARGUMENT'?
for f in 'no%E_EMPTY_DECLARATION' \
'no%E_STATEMENT_NOT_REACHED' \
'no%E_ARGUEMENT_MISMATCH' \
'no%E_MACRO_REDEFINED'
do
AS_COMPILER_FLAG([-errwarn=%all,$f], [
ERROR_CFLAGS="$ERROR_CFLAGS,$f"
])
done
])
fi
fi
AC_SUBST(ERROR_CFLAGS)
AC_MSG_NOTICE([set ERROR_CFLAGS to $ERROR_CFLAGS])
])
dnl Sets ERROR_CXXFLAGS to something the compiler will accept.
dnl AC_SUBST them so they are available in Makefile
dnl -Wall is added if it is supported
dnl -Werror is added if ADD-WERROR is not "no"
dnl These flags can be overridden at make time:
dnl make ERROR_CXXFLAGS=
AC_DEFUN([AG_GST_SET_ERROR_CXXFLAGS],
[
AC_REQUIRE([AC_PROG_CXX])
AC_REQUIRE([AS_CXX_COMPILER_FLAG])
dnl if we support -Wall, set it unconditionally
AS_CXX_COMPILER_FLAG(-Wall, [
ERROR_CXXFLAGS="-Wall"
], [
ERROR_CXXFLAGS=""
])
dnl if asked for, add -Werror if supported
if test "x$1" != "xno"
then
AS_CXX_COMPILER_FLAG(-Werror, werror_supported=yes, werror_supported=no)
if test "x$werror_supported" = "xyes"; then
ERROR_CXXFLAGS="$ERROR_CXXFLAGS -Werror"
dnl add exceptions
for f in '-Wno-non-virtual-dtor'
do
AS_CXX_COMPILER_FLAG([$f], ERROR_CXXFLAGS="$ERROR_CXXFLAGS $f")
done
else
dnl if -Werror isn't suported, try -errwarn=%all
AS_CXX_COMPILER_FLAG([-errwarn=%all], errwarnall=yes, errwarnall=no)
if test "x$errwarnall" = "xyes"; then
ERROR_CXXFLAGS="-errwarn=%all"
dnl try -errwarn=%all,no%E_EMPTY_DECLARATION,
dnl no%E_STATEMENT_NOT_REACHED,no%E_ARGUEMENT_MISMATCH,
dnl no%E_MACRO_REDEFINED (Sun Forte case)
dnl For Forte we need disable "empty declaration" warning produced by un-needed semicolon
dnl "statement not reached" disabled because there is g_assert_not_reached () in some places
dnl "macro redefined" because of gst/gettext.h
dnl FIXME: is it really supposed to be 'ARGUEMENT' and not 'ARGUMENT'?
dnl FIXME: do any of these work with the c++ compiler? if not, why
dnl do we check at all?
for f in 'no%E_EMPTY_DECLARATION' \
'no%E_STATEMENT_NOT_REACHED' \
'no%E_ARGUEMENT_MISMATCH' \
'no%E_MACRO_REDEFINED'
do
AS_CXX_COMPILER_FLAG([-errwarn=%all,$f], [
ERROR_CXXFLAGS="$ERROR_CXXFLAGS,$f"
])
done
fi
fi
fi
AC_SUBST(ERROR_CXXFLAGS)
AC_MSG_NOTICE([set ERROR_CXXFLAGS to $ERROR_CXXFLAGS])
])
dnl Sets the default error level for debugging messages
AC_DEFUN([AG_GST_SET_LEVEL_DEFAULT],
[
dnl define correct errorlevel for debugging messages. We want to have
dnl GST_ERROR messages printed when running cvs builds
if test "x[$1]" = "xyes"; then
GST_LEVEL_DEFAULT=GST_LEVEL_ERROR
else
GST_LEVEL_DEFAULT=GST_LEVEL_NONE
fi
AC_DEFINE_UNQUOTED(GST_LEVEL_DEFAULT, $GST_LEVEL_DEFAULT,
[Default errorlevel to use])
dnl AC_SUBST so we can use it for win32/common/config.h
AC_SUBST(GST_LEVEL_DEFAULT)
])
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