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| author | Stephan Bergmann <sbergman@redhat.com> | 2013-03-23 21:55:27 +0100 |
|---|---|---|
| committer | Stephan Bergmann <sbergman@redhat.com> | 2013-03-25 08:52:54 +0100 |
| commit | fa545023ada3f2a5f79cab1ff628fd18434c7c2e (patch) | |
| tree | 7bb5c0f01264f9b53724baa1b0ef7b7e80e23b3d /configure.ac | |
| parent | c940e3d8b3895c550fb37e0e9acbd19b4bb3515e (diff) | |
Introduce HAVE_GCC_PRAGMA_DIAGNOSTIC_{MODIFY,SCOPE}
...replacing hard-coded GCC version checks. Those checks that guard
#pragma GCC diagnostic ignored "-Wnon-virtual-dtor"
appear relevant only for GCC itself, not Clang (which used to fail the old
guards because it typically announces itself with a rather low
__GNUC__/__GNUC_MINOR__ version), see 6e67c03dc0225fc66343546b14e902b9d238b1a3
"Enable -Wnon-virtual-dtor for GCC 4.6"
Change-Id: I6bfa4d5caa6192e7a203ce829682bf6bb8d61a1b
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac index 898dedb0523b..a12018a4ae8a 100644 --- a/configure.ac +++ b/configure.ac @@ -5562,6 +5562,33 @@ if test "$GCC" = "yes"; then AC_MSG_RESULT([no]) fi + AC_MSG_CHECKING( + [whether $CC supports pragma GCC diagnostic error/ignored/warning]) + save_CFLAGS=$CFLAGS + CFLAGS="$CFLAGS -Werror -Wunused" + AC_COMPILE_IFELSE([AC_LANG_SOURCE([ + #pragma GCC diagnostic ignored "-Wunused" + static void dummy() {} + ])], [ + AC_DEFINE([HAVE_GCC_PRAGMA_DIAGNOSTIC_MODIFY],[1]) + AC_MSG_RESULT([yes]) + ], [AC_MSG_RESULT([no])]) + CFLAGS=$save_CFLAGS + + AC_MSG_CHECKING([whether $CC supports pragma GCC diagnostic push/pop]) + save_CFLAGS=$CFLAGS + CFLAGS="$CFLAGS -Werror -Wunused" + AC_COMPILE_IFELSE([AC_LANG_SOURCE([ + #pragma GCC diagnostic push + #pragma GCC diagnostic ignored "-Wunused" + static void dummy() {} + #pragma GCC diagnostic pop + ])], [ + AC_DEFINE([HAVE_GCC_PRAGMA_DIAGNOSTIC_SCOPE],[1]) + AC_MSG_RESULT([yes]) + ], [AC_MSG_RESULT([no])]) + CFLAGS=$save_CFLAGS + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #if __GNUC__ == 4 && __GNUC_MINOR__ == 7 && (__GNUC_PATCHLEVEL__ == 0 || __GNUC_PATCHLEVEL__ == 1) #else |