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| author | marha <marha@users.sourceforge.net> | 2010-11-14 21:29:32 +0000 |
|---|---|---|
| committer | marha <marha@users.sourceforge.net> | 2010-11-14 21:29:32 +0000 |
| commit | 3425b16d521b8846b95df2b7d32a548d93341f3b (patch) | |
| tree | fa430e95285d90f990b2d5574dad1e409ba5980c /pixman/configure.ac | |
| parent | 41c64098a90b4e974d5005a1619472f2e8a64ea1 (diff) | |
| download | vcxsrv-3425b16d521b8846b95df2b7d32a548d93341f3b.tar.gz vcxsrv-3425b16d521b8846b95df2b7d32a548d93341f3b.tar.bz2 vcxsrv-3425b16d521b8846b95df2b7d32a548d93341f3b.zip | |
xserver pixman libX11 libXext 14/11/2010
Diffstat (limited to 'pixman/configure.ac')
| -rw-r--r-- | pixman/configure.ac | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/pixman/configure.ac b/pixman/configure.ac index ad975f494..d1265ab11 100644 --- a/pixman/configure.ac +++ b/pixman/configure.ac @@ -740,6 +740,33 @@ AC_SUBST(HAVE_PTHREAD_SETSPECIFIC) AC_SUBST(PTHREAD_LDFLAGS)
AC_SUBST(PTHREAD_LIBS)
+dnl =====================================
+dnl __attribute__((constructor))
+
+support_for_attribute_constructor=no
+
+AC_MSG_CHECKING(for __attribute__((constructor)))
+AC_LINK_IFELSE([
+#if defined(__GNUC__) && (__GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 7))
+/* attribute 'constructor' is supported since gcc 2.7, but some compilers
+ * may only pretend to be gcc, so let's try to actually use it
+ */
+static int x = 1;
+static void __attribute__((constructor)) constructor_function () { x = 0; }
+int main (void) { return x; }
+#else
+#error not gcc or gcc version is older than 2.7
+#endif
+], support_for_attribute_constructor=yes)
+
+if test x$support_for_attribute_constructor = xyes; then
+ AC_DEFINE([TOOLCHAIN_SUPPORTS_ATTRIBUTE_CONSTRUCTOR],
+ [],[Whether the tool chain supports __attribute__((constructor))])
+fi
+
+AC_MSG_RESULT($support_for_attribute_constructor)
+AC_SUBST(TOOLCHAIN_SUPPORTS_ATTRIBUTE_CONSTRUCTOR)
+
AC_OUTPUT([pixman-1.pc
pixman-1-uninstalled.pc
Makefile
|