diff options
| author | Max Kellermann <max@duempel.org> | 2014-11-28 18:57:48 +0100 |
|---|---|---|
| committer | Max Kellermann <max@duempel.org> | 2014-12-26 13:30:44 +0100 |
| commit | 0964b06240947e94fc2732107815fff41856d481 (patch) | |
| tree | f9828f651f8c1d88e9abf4914704dbc2edc10398 | |
| parent | 92eeca3ba77446b760d3d64d9c50a08029bd4500 (diff) | |
| download | mpd-0964b06240947e94fc2732107815fff41856d481.tar.gz mpd-0964b06240947e94fc2732107815fff41856d481.tar.xz mpd-0964b06240947e94fc2732107815fff41856d481.zip | |
Compiler.h: add macro GCC_OLDER_THAN()
| -rw-r--r-- | src/Compiler.h | 12 | ||||
| -rw-r--r-- | src/util/Manual.hxx | 4 |
2 files changed, 12 insertions, 4 deletions
diff --git a/src/Compiler.h b/src/Compiler.h index 14dd5d248..82a192394 100644 --- a/src/Compiler.h +++ b/src/Compiler.h @@ -31,13 +31,21 @@ #define GCC_CHECK_VERSION(major, minor) \ (defined(__GNUC__) && GCC_VERSION >= GCC_MAKE_VERSION(major, minor, 0)) +/** + * Are we building with gcc (not clang or any other compiler) and a + * version older than the specified one? + */ +#define GCC_OLDER_THAN(major, minor) \ + (defined(__GNUC__) && !defined(__clang__) && \ + GCC_VERSION < GCC_MAKE_VERSION(major, minor, 0)) + #ifdef __clang__ # define CLANG_VERSION GCC_MAKE_VERSION(__clang_major__, __clang_minor__, __clang_patchlevel__) # if __clang_major__ < 3 # error Sorry, your clang version is too old. You need at least version 3.1. # endif #elif defined(__GNUC__) -# if !GCC_CHECK_VERSION(4,6) +# if GCC_OLDER_THAN(4,6) # error Sorry, your gcc version is too old. You need at least version 4.6. # endif #else @@ -138,7 +146,7 @@ #if defined(__cplusplus) /* support for C++11 "override" was added in gcc 4.7 */ -#if !defined(__clang__) && !GCC_CHECK_VERSION(4,7) +#if GCC_OLDER_THAN(4,7) #define override #define final #endif diff --git a/src/util/Manual.hxx b/src/util/Manual.hxx index baab0a555..75cffac06 100644 --- a/src/util/Manual.hxx +++ b/src/util/Manual.hxx @@ -35,7 +35,7 @@ #include <new> #include <utility> -#if !defined(__clang__) && __GNUC__ && !GCC_CHECK_VERSION(4,8) +#if GCC_OLDER_THAN(4,8) #include <type_traits> #endif @@ -54,7 +54,7 @@ */ template<class T> class Manual { -#if !defined(__clang__) && __GNUC__ && !GCC_CHECK_VERSION(4,8) +#if GCC_OLDER_THAN(4,8) /* no alignas() on gcc < 4.8: apply worst-case fallback */ __attribute__((aligned(8))) #else |