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https://gitlab.com/qemu-project/qemu
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95df51a4a0
GLib 2.0 include files use __printf__ for the format attribute which resolves to native format strings on w32 hosts. QEMU wants standard format strings instead of native format strings, so we simply change any declaration with __printf__ to use __gnu_printf__. This works because all basic printf functions support both kinds of format strings. This fixes a compiler warning: qapi/string-output-visitor.c: In function ‘print_type_int’: qapi/string-output-visitor.c:34:5: warning: unknown conversion type character ‘l’ in format [-Wformat] qapi/string-output-visitor.c:34:5: warning: too many arguments for format [-Wformat-extra-args] Signed-off-by: Stefan Weil <sw@weilnetz.de> Signed-off-by: Stefan Hajnoczi <stefanha@gmail.com>
65 lines
2 KiB
C
65 lines
2 KiB
C
/* public domain */
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#ifndef COMPILER_H
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#define COMPILER_H
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#include "config-host.h"
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/*----------------------------------------------------------------------------
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| The macro QEMU_GNUC_PREREQ tests for minimum version of the GNU C compiler.
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| The code is a copy of SOFTFLOAT_GNUC_PREREQ, see softfloat-macros.h.
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*----------------------------------------------------------------------------*/
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#if defined(__GNUC__) && defined(__GNUC_MINOR__)
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# define QEMU_GNUC_PREREQ(maj, min) \
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((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min))
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#else
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# define QEMU_GNUC_PREREQ(maj, min) 0
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#endif
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#define QEMU_NORETURN __attribute__ ((__noreturn__))
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#if QEMU_GNUC_PREREQ(3, 4)
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#define QEMU_WARN_UNUSED_RESULT __attribute__((warn_unused_result))
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#else
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#define QEMU_WARN_UNUSED_RESULT
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#endif
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#if defined(_WIN32)
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# define QEMU_PACKED __attribute__((gcc_struct, packed))
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#else
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# define QEMU_PACKED __attribute__((packed))
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#endif
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#define cat(x,y) x ## y
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#define cat2(x,y) cat(x,y)
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#define QEMU_BUILD_BUG_ON(x) \
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typedef char cat2(qemu_build_bug_on__,__LINE__)[(x)?-1:1];
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#if defined __GNUC__
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# if !QEMU_GNUC_PREREQ(4, 4)
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/* gcc versions before 4.4.x don't support gnu_printf, so use printf. */
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# define GCC_ATTR __attribute__((__unused__, format(printf, 1, 2)))
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# define GCC_FMT_ATTR(n, m) __attribute__((format(printf, n, m)))
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# else
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/* Use gnu_printf when supported (qemu uses standard format strings). */
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# define GCC_ATTR __attribute__((__unused__, format(gnu_printf, 1, 2)))
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# define GCC_FMT_ATTR(n, m) __attribute__((format(gnu_printf, n, m)))
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# if defined(_WIN32)
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/* Map __printf__ to __gnu_printf__ because we want standard format strings
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* even when MinGW or GLib include files use __printf__. */
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# define __printf__ __gnu_printf__
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# endif
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# endif
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#if defined(_WIN32)
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#define GCC_WEAK __attribute__((weak))
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#define GCC_WEAK_DECL GCC_WEAK
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#else
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#define GCC_WEAK __attribute__((weak))
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#define GCC_WEAK_DECL
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#endif
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#else
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#define GCC_ATTR /**/
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#define GCC_FMT_ATTR(n, m)
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#endif
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#endif /* COMPILER_H */
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