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gcc.h: backport GCC_CHECK_VERSION() from v0.17.x

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This commit is contained in:
Max Kellermann 2012-06-12 19:21:26 +02:00
parent 6bb166aaaa
commit 50cfb997cc
1 changed files with 6 additions and 1 deletions
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7
src/gcc.h
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@ -20,13 +20,18 @@
#ifndef MPD_GCC_H #ifndef MPD_GCC_H
#define 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 /* this allows us to take advantage of special gcc features while still
* allowing other compilers to compile: * allowing other compilers to compile:
* *
* example taken from: http://rlove.org/log/2005102601 * example taken from: http://rlove.org/log/2005102601
*/ */
#if defined(__GNUC__) && (__GNUC__ >= 3) #if GCC_CHECK_VERSION(3,0)
# define mpd_must_check __attribute__ ((warn_unused_result)) # define mpd_must_check __attribute__ ((warn_unused_result))
# define mpd_packed __attribute__ ((packed)) # define mpd_packed __attribute__ ((packed))
/* these are very useful for type checking */ /* these are very useful for type checking */