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Diffstat (limited to 'common/m4/gst-error.m4')
| -rwxr-xr-x | common/m4/gst-error.m4 | 145 |
1 files changed, 145 insertions, 0 deletions
diff --git a/common/m4/gst-error.m4 b/common/m4/gst-error.m4 new file mode 100755 index 0000000..f97f9a6 --- /dev/null +++ b/common/m4/gst-error.m4 @@ -0,0 +1,145 @@ +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) +]) |