X-Git-Url: https://wimlib.net/git/?p=wimlib;a=blobdiff_plain;f=include%2Fwimlib%2Fcompiler.h;h=5327318832f3c7ffb6dd9484117e73f9333a9f75;hp=d32d092b964dfda938aa82cd4343edb085e9e103;hb=a8343baff22193be4651a3a63b07cb1520ced4e8;hpb=047d0a95f3968037834af5dff0d79c1192626025

diff --git a/include/wimlib/compiler.h b/include/wimlib/compiler.h
index d32d092b..53273188 100644
--- a/include/wimlib/compiler.h
+++ b/include/wimlib/compiler.h
@@ -1,38 +1,100 @@
+/*
+ * compiler.h
+ *
+ * The author dedicates this file to the public domain.
+ * You can do whatever you want with this file.
+ */
+
 #ifndef _WIMLIB_COMPILER_H
 #define _WIMLIB_COMPILER_H
 
 #ifdef __GNUC__
-#	if defined(__CYGWIN__) || defined(__WIN32__)
-#		define WIMLIBAPI __declspec(dllexport)
-#	else
-#		define WIMLIBAPI __attribute__((visibility("default")))
-#	endif
-#	define _always_inline_attribute inline __attribute__((always_inline))
-#	define _packed_attribute __attribute__((packed))
-#	define _format_attribute(type, format_str, args_start) \
-			/*__attribute__((format(type, format_str, args_start))) */
-#	if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4)
-#		define _cold_attribute     __attribute__((cold))
-#	else
-#		define _cold_attribute
-#	endif
-#	define _malloc_attribute __attribute__((malloc))
-#	define _warn_unused_result_attribute __attribute__((warn_unused_result))
-#	define _aligned_attribute(size) __attribute__((aligned(size)))
-#	define likely(x) __builtin_expect(!!(x), 1)
-#	define unlikely(x) __builtin_expect(!!(x), 0)
-#	define inline inline __attribute__((always_inline))
+#  include "wimlib/compiler-gcc.h"
+#else
+#  error "Unrecognized compiler.  Please add a header file for your compiler."
+#endif
+
+#ifndef WIMLIBAPI
+#  define WIMLIBAPI
+#endif
+
+#ifndef _packed_attribute
+#  error "missing required definition of _packed_attribute"
+#endif
+
+#ifndef _aligned_attribute
+#  error "missing required definition of _aligned_attribute"
+#endif
+
+#ifndef _may_alias_attribute
+#  error "missing required definition of _may_alias_attribute"
+#endif
+
+#ifndef likely
+#  define likely(expr)		(expr)
+#endif
+
+#ifndef unlikely
+#  define unlikely(expr)	(expr)
+#endif
+
+#ifndef prefetch
+#  define prefetch(addr)
+#endif
+
+#ifndef _cold_attribute
+#  define _cold_attribute
+#endif
+
+#ifndef _malloc_attribute
+#  define _malloc_attribute
+#endif
+
+#ifndef _format_attribute
+#  define _format_attribute(type, format_str, format_start)
+#endif
+
+#ifndef noinline
+#  define noinline
+#endif
+
+/* Same as 'noinline', but 'noinline_for_stack' documents that 'noinline' is
+ * being used to prevent the annotated function from being inlined into a
+ * recursive function and increasing its stack usage.  */
+#define noinline_for_stack	noinline
+
+#ifndef CPU_IS_BIG_ENDIAN
+#  error "missing required endianness definition"
+#endif
+
+#define CPU_IS_LITTLE_ENDIAN (!CPU_IS_BIG_ENDIAN)
+
+#ifndef UNALIGNED_ACCESS_SPEED
+#  define UNALIGNED_ACCESS_SPEED 0
+#endif
+
+#define UNALIGNED_ACCESS_IS_ALLOWED	(UNALIGNED_ACCESS_SPEED >= 1)
+#define UNALIGNED_ACCESS_IS_FAST	(UNALIGNED_ACCESS_SPEED >= 2)
+#define UNALIGNED_ACCESS_IS_VERY_FAST	(UNALIGNED_ACCESS_SPEED >= 3)
+
+#ifndef typeof
+#  error "missing required definition of typeof"
+#endif
+
+#if !defined(min) || !defined(max) || !defined(swap)
+#  error "missing required definitions of min(), max(), and swap() macros"
+#endif
+
+#ifdef __CHECKER__
+#  define _bitwise_attr	__attribute__((bitwise))
+#  define _force_attr	__attribute__((force))
 #else
-#	define WIMLIBAPI
-#	define _always_inline_attribute inline
-#	define _format_attribute(type, format_str, args_start)
-#	define _cold_attribute
-#	define _packed_attribute
-#	define _malloc_attribute
-#	define _warn_unused_result_attribute
-#	define _aligned_attribute(size)
-#	define likely(x) (x)
-#	define unlikely(x) (x)
-#endif /* __GNUC__ */
+#  define _bitwise_attr
+#  define _force_attr
+#endif
+
+#ifndef BUILD_BUG_ON
+#  define BUILD_BUG_ON(expr)	((void)sizeof(char[1 - 2*!!(expr)]))
+#endif
 
 #endif /* _WIMLIB_COMPILER_H */