added wxCHECK_GCC_VERSION() macro

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@16750 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

diff --git a/include/wx/platform.h b/include/wx/platform.h
index 68bfb33fc6ff1f2c11b0aa2204fccbeb4c3c5c6b..60c5770ed0dbac6f7f337969a720267fb6163b73 100644 (file)
--- a/include/wx/platform.h
+++ b/include/wx/platform.h
@@ -244,6 +244,20 @@
     #define __X__
 #endif
 
+/*
+   This macro can be used to test the gcc version and can be used like this:
+
+    #if wxCHECK_GCC_VERSION(3, 1)
+        ... we have gcc 3.1 or later ...
+    #else
+        ... no gcc at all or gcc < 3.1 ...
+    #endif
+*/
+#define wxCHECK_GCC_VERSION( major, minor ) \
+    ( defined(__GNUC__) && defined(__GNUC_MINOR__) \
+    && ( ( __GNUC__ > (major) ) \
+        || ( __GNUC__ == (major) && __GNUC_MINOR__ >= (minor) ) ) )
+
 /*
    This macro can be used to check that the version of mingw32 compiler is
    at least maj.min