compiler_gcc: do not redefine __gnu_attributes
gcc allows extensions to be non compiler specific by defining
__* macros for the attributes supported by gcc. Having a
different definition causes many warnings during the build
(cdefs.h on FreeBSD uses __attribute((__pure__)) where u-boot
uses __attribute__((pure)) for example). Do not redefine
these macros to suppress these warnings.
This patch ignores the checkpatch warning:
WARNING: __packed is preferred over __attribute__((packed))
Signed-off-by: Jeroen Hofstee <jeroen@myspectrum.nl>
diff --git a/include/linux/compiler-gcc.h b/include/linux/compiler-gcc.h
index 73dcf80..9896e54 100644
--- a/include/linux/compiler-gcc.h
+++ b/include/linux/compiler-gcc.h
@@ -50,7 +50,9 @@
#endif
#define __deprecated __attribute__((deprecated))
-#define __packed __attribute__((packed))
+#ifndef __packed
+# define __packed __attribute__((packed))
+#endif
#define __weak __attribute__((weak))
/*
@@ -73,8 +75,12 @@
* would be.
* [...]
*/
-#define __pure __attribute__((pure))
-#define __aligned(x) __attribute__((aligned(x)))
+#ifndef __pure
+# define __pure __attribute__((pure))
+#endif
+#ifndef __aligned
+# define __aligned(x) __attribute__((aligned(x)))
+#endif
#define __printf(a,b) __attribute__((format(printf,a,b)))
#define noinline __attribute__((noinline))
#define __attribute_const__ __attribute__((__const__))
diff --git a/include/linux/compiler-gcc4.h b/include/linux/compiler-gcc4.h
index 94dea3f..27d11ca 100644
--- a/include/linux/compiler-gcc4.h
+++ b/include/linux/compiler-gcc4.h
@@ -12,7 +12,9 @@
#define __used __attribute__((__used__))
#define __must_check __attribute__((warn_unused_result))
#define __compiler_offsetof(a,b) __builtin_offsetof(a,b)
-#define __always_inline inline __attribute__((always_inline))
+#ifndef __always_inline
+# define __always_inline inline __attribute__((always_inline))
+#endif
/*
* A trick to suppress uninitialized variable warning without generating any