6 #include "config-host.h"
8 /*----------------------------------------------------------------------------
9 | The macro QEMU_GNUC_PREREQ tests for minimum version of the GNU C compiler.
10 | The code is a copy of SOFTFLOAT_GNUC_PREREQ, see softfloat-macros.h.
11 *----------------------------------------------------------------------------*/
12 #if defined(__GNUC__) && defined(__GNUC_MINOR__)
13 # define QEMU_GNUC_PREREQ(maj, min) \
14 ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min))
16 # define QEMU_GNUC_PREREQ(maj, min) 0
19 #define QEMU_NORETURN __attribute__ ((__noreturn__))
21 #if QEMU_GNUC_PREREQ(3, 4)
22 #define QEMU_WARN_UNUSED_RESULT __attribute__((warn_unused_result))
24 #define QEMU_WARN_UNUSED_RESULT
27 #if QEMU_GNUC_PREREQ(4, 3)
28 #define QEMU_ARTIFICIAL __attribute__((always_inline, artificial))
30 #define QEMU_ARTIFICIAL
34 # define QEMU_PACKED __attribute__((gcc_struct, packed))
36 # define QEMU_PACKED __attribute__((packed))
39 #define cat(x,y) x ## y
40 #define cat2(x,y) cat(x,y)
41 #define QEMU_BUILD_BUG_ON(x) \
42 typedef char cat2(qemu_build_bug_on__,__LINE__)[(x)?-1:1] __attribute__((unused));
45 # if !QEMU_GNUC_PREREQ(4, 4)
46 /* gcc versions before 4.4.x don't support gnu_printf, so use printf. */
47 # define GCC_FMT_ATTR(n, m) __attribute__((format(printf, n, m)))
49 /* Use gnu_printf when supported (qemu uses standard format strings). */
50 # define GCC_FMT_ATTR(n, m) __attribute__((format(gnu_printf, n, m)))
52 /* Map __printf__ to __gnu_printf__ because we want standard format strings
53 * even when MinGW or GLib include files use __printf__. */
54 # define __printf__ __gnu_printf__
58 #define GCC_FMT_ATTR(n, m)
61 #endif /* COMPILER_H */