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authorMax Kellermann <max@duempel.org>2011-09-15 09:22:48 +0200
committerMax Kellermann <max@duempel.org>2011-09-15 09:22:48 +0200
commitd0c85a5a96022f9ef091b335c418eef5b290d6cc (patch)
tree61c6bb5bd24d02cfcf84565591f78b64b1d5133d
parent46ed717af4f9d0a43278d82ce77264d67becf6cb (diff)
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gcc.h: add macro GCC_CHECK_VERSION
-rw-r--r--src/gcc.h7
1 files changed, 6 insertions, 1 deletions
diff --git a/src/gcc.h b/src/gcc.h
index 8a5f98201..45f7101f3 100644
--- a/src/gcc.h
+++ b/src/gcc.h
@@ -20,13 +20,18 @@
#ifndef MPD_GCC_H
#define MPD_GCC_H
+#define GCC_CHECK_VERSION(major, minor) \
+ (defined(__GNUC__) && \
+ (__GNUC__ > (major) || \
+ (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))))
+
/* this allows us to take advantage of special gcc features while still
* allowing other compilers to compile:
*
* example taken from: http://rlove.org/log/2005102601
*/
-#if defined(__GNUC__) && (__GNUC__ >= 3)
+#if GCC_CHECK_VERSION(3,0)
# define gcc_must_check __attribute__ ((warn_unused_result))
# define gcc_packed __attribute__ ((packed))
/* these are very useful for type checking */