| dnl handle various error-related things |
| |
| dnl Thomas Vander Stichele <thomas@apestaart.org> |
| dnl Tim-Philipp MΓΌller <tim centricular net> |
| |
| dnl Last modification: 2008-02-18 |
| |
| dnl AG_GST_SET_ERROR_CFLAGS([ADD-WERROR], [MORE_FLAGS]) |
| dnl AG_GST_SET_ERROR_CXXFLAGS([ADD-WERROR], [MORE_FLAGS]) |
| dnl AG_GST_SET_LEVEL_DEFAULT([IS-GIT-VERSION]) |
| |
| |
| dnl Sets WARNING_CFLAGS and ERROR_CFLAGS to something the compiler |
| dnl will accept and AC_SUBST them so they are available in Makefile |
| dnl |
| dnl WARNING_CFLAGS will contain flags to make the compiler emit more |
| dnl warnings. |
| dnl ERROR_CFLAGS will contain flags to make those warnings fatal, |
| dnl unless ADD-WERROR is set to "no" |
| dnl |
| dnl If MORE_FLAGS is set, tries to add each of the given flags |
| dnl to WARNING_CFLAGS if the compiler supports them. Each flag is |
| dnl tested separately. |
| dnl |
| 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]) |
| |
| WARNING_CFLAGS="" |
| ERROR_CFLAGS="" |
| |
| dnl if we support -Wall, set it unconditionally |
| AS_COMPILER_FLAG(-Wall, |
| WARNING_CFLAGS="$WARNING_CFLAGS -Wall") |
| |
| dnl Warn if declarations after statements are used (C99 extension) |
| AS_COMPILER_FLAG(-Wdeclaration-after-statement, |
| WARNING_CFLAGS="$WARNING_CFLAGS -Wdeclaration-after-statement") |
| |
| dnl Warn if variable length arrays are used (C99 extension) |
| AS_COMPILER_FLAG(-Wvla, |
| WARNING_CFLAGS="$WARNING_CFLAGS -Wvla") |
| |
| dnl Warn for invalid pointer arithmetic |
| AS_COMPILER_FLAG(-Wpointer-arith, |
| WARNING_CFLAGS="$WARNING_CFLAGS -Wpointer-arith") |
| |
| dnl if asked for, add -Werror if supported |
| if test "x$1" != "xno" |
| then |
| AS_COMPILER_FLAG(-Werror, ERROR_CFLAGS="$ERROR_CFLAGS -Werror") |
| fi |
| |
| if test "x$2" != "x" |
| then |
| UNSUPPORTED="" |
| list="$2" |
| for each in $list |
| do |
| AS_COMPILER_FLAG($each, |
| WARNING_CFLAGS="$WARNING_CFLAGS $each", |
| UNSUPPORTED="$UNSUPPORTED $each") |
| done |
| if test "X$UNSUPPORTED" != X ; then |
| AC_MSG_NOTICE([unsupported compiler flags: $UNSUPPORTED]) |
| fi |
| fi |
| |
| AC_SUBST(WARNING_CFLAGS) |
| AC_SUBST(ERROR_CFLAGS) |
| AC_MSG_NOTICE([set WARNING_CFLAGS to $WARNING_CFLAGS]) |
| AC_MSG_NOTICE([set ERROR_CFLAGS to $ERROR_CFLAGS]) |
| ]) |
| |
| dnl Sets WARNING_CXXFLAGS and ERROR_CXXFLAGS to something the compiler |
| dnl will accept and AC_SUBST them so they are available in Makefile |
| dnl |
| dnl WARNING_CXXFLAGS will contain flags to make the compiler emit more |
| dnl warnings. |
| dnl ERROR_CXXFLAGS will contain flags to make those warnings fatal, |
| dnl unless ADD-WERROR is set to "no" |
| dnl |
| dnl If MORE_FLAGS is set, tries to add each of the given flags |
| dnl to WARNING_CFLAGS if the compiler supports them. Each flag is |
| dnl tested separately. |
| dnl |
| dnl These flags can be overridden at make time: |
| dnl make ERROR_CXXFLAGS= |
| AC_DEFUN([AG_GST_SET_ERROR_CXXFLAGS], |
| [ |
| AC_REQUIRE([AC_PROG_CXX]) |
| AC_REQUIRE([AS_CXX_COMPILER_FLAG]) |
| |
| ERROR_CXXFLAGS="" |
| WARNING_CXXFLAGS="" |
| |
| dnl if we support -Wall, set it unconditionally |
| AS_CXX_COMPILER_FLAG(-Wall, WARNING_CXXFLAGS="$WARNING_CXXFLAGS -Wall") |
| |
| dnl if asked for, add -Werror if supported |
| if test "x$1" != "xno" |
| then |
| AS_CXX_COMPILER_FLAG(-Werror, ERROR_CXXFLAGS="$ERROR_CXXFLAGS -Werror") |
| |
| if test "x$ERROR_CXXFLAGS" != "x" |
| then |
| dnl add exceptions |
| AS_CXX_COMPILER_FLAG([-Wno-non-virtual-dtor], ERROR_CXXFLAGS="$ERROR_CXXFLAGS -Wno-non-virtual-dtor") |
| |
| dnl Add -fno-strict-aliasing for GLib versions before 2.19.8 |
| dnl as before G_LOCK and friends caused strict aliasing compiler |
| dnl warnings. |
| PKG_CHECK_EXISTS([glib-2.0 < 2.19.8], [ |
| AS_CXX_COMPILER_FLAG([-fno-strict-aliasing], |
| ERROR_CXXFLAGS="$ERROR_CXXFLAGS -fno-strict-aliasing") |
| ]) |
| fi |
| fi |
| |
| if test "x$2" != "x" |
| then |
| UNSUPPORTED="" |
| list="$2" |
| for each in $list |
| do |
| AS_CXX_COMPILER_FLAG($each, |
| WARNING_CXXFLAGS="$WARNING_CXXFLAGS $each", |
| UNSUPPORTED="$UNSUPPORTED $each") |
| done |
| if test "X$UNSUPPORTED" != X ; then |
| AC_MSG_NOTICE([unsupported compiler flags: $UNSUPPORTED]) |
| fi |
| fi |
| |
| AC_SUBST(WARNING_CXXFLAGS) |
| AC_SUBST(ERROR_CXXFLAGS) |
| AC_MSG_NOTICE([set WARNING_CXXFLAGS to $WARNING_CXXFLAGS]) |
| AC_MSG_NOTICE([set ERROR_CXXFLAGS to $ERROR_CXXFLAGS]) |
| ]) |
| |
| dnl Sets WARNING_OBJCFLAGS and ERROR_OBJCFLAGS to something the compiler |
| dnl will accept and AC_SUBST them so they are available in Makefile |
| dnl |
| dnl WARNING_OBJCFLAGS will contain flags to make the compiler emit more |
| dnl warnings. |
| dnl ERROR_OBJCFLAGS will contain flags to make those warnings fatal, |
| dnl unless ADD-WERROR is set to "no" |
| dnl |
| dnl If MORE_FLAGS is set, tries to add each of the given flags |
| dnl to WARNING_CFLAGS if the compiler supports them. Each flag is |
| dnl tested separately. |
| dnl |
| dnl These flags can be overridden at make time: |
| dnl make ERROR_OBJCFLAGS= |
| AC_DEFUN([AG_GST_SET_ERROR_OBJCFLAGS], |
| [ |
| AC_REQUIRE([AC_PROG_OBJC]) |
| AC_REQUIRE([AS_OBJC_COMPILER_FLAG]) |
| |
| ERROR_OBJCFLAGS="" |
| WARNING_OBJCFLAGS="" |
| |
| dnl if we support -Wall, set it unconditionally |
| AS_OBJC_COMPILER_FLAG(-Wall, WARNING_OBJCFLAGS="$WARNING_OBJCFLAGS -Wall") |
| |
| dnl if asked for, add -Werror if supported |
| if test "x$1" != "xno" |
| then |
| AS_OBJC_COMPILER_FLAG(-Werror, ERROR_OBJCFLAGS="$ERROR_OBJCFLAGS -Werror") |
| |
| if test "x$ERROR_OBJCFLAGS" != "x" |
| then |
| dnl Add -fno-strict-aliasing for GLib versions before 2.19.8 |
| dnl as before G_LOCK and friends caused strict aliasing compiler |
| dnl warnings. |
| PKG_CHECK_EXISTS([glib-2.0 < 2.19.8], [ |
| AS_OBJC_COMPILER_FLAG([-fno-strict-aliasing], |
| ERROR_OBJCFLAGS="$ERROR_OBJCFLAGS -fno-strict-aliasing") |
| ]) |
| fi |
| fi |
| |
| if test "x$2" != "x" |
| then |
| UNSUPPORTED="" |
| list="$2" |
| for each in $list |
| do |
| AS_OBJC_COMPILER_FLAG($each, |
| WARNING_OBJCFLAGS="$WARNING_OBJCFLAGS $each", |
| UNSUPPORTED="$UNSUPPORTED $each") |
| done |
| if test "X$UNSUPPORTED" != X ; then |
| AC_MSG_NOTICE([unsupported compiler flags: $UNSUPPORTED]) |
| fi |
| fi |
| |
| AC_SUBST(WARNING_OBJCFLAGS) |
| AC_SUBST(ERROR_OBJCFLAGS) |
| AC_MSG_NOTICE([set WARNING_OBJCFLAGS to $WARNING_OBJCFLAGS]) |
| AC_MSG_NOTICE([set ERROR_OBJCFLAGS to $ERROR_OBJCFLAGS]) |
| ]) |
| |
| 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) |
| ]) |
