Gcc编译:Bitops.h错误:预期'=',',',';','asm'或'__attribute__'

时间:2017-05-23 06:36:25

标签: linux gcc makefile compiler-errors

我正在尝试使用gcc构建文件。它包括mutex.h。

生成文件:

CC = gcc
CFLAGS = -I/usr/src/linux-headers-3.13.0-32/include 
CFLAGS += -I/usr/src/linux-headers-3.13.0-32/arch/x86/include

SOURCES := $(wildcard *.c)

all: $(SOURCES)
        $(CC) $(CFLAGS) $(SOURCES) 

当我付费时,我收到以下错误。

错误:

gcc -I/usr/src/linux-headers-3.13.0-32/include -I/usr/src/linux-headers-3.13.0-32/arch/x86/include  app.c rtos.c
In file included from /usr/src/linux-headers-3.13.0-32/include/linux/bitops.h:33:0,
                 from /usr/src/linux-headers-3.13.0-32/include/linux/kernel.h:10,
                 from /usr/src/linux-headers-3.13.0-32/arch/x86/include/asm/percpu.h:44,
                 from /usr/src/linux-headers-3.13.0-32/arch/x86/include/asm/current.h:5,
                 from /usr/src/linux-headers-3.13.0-32/include/linux/mutex.h:13,
                 from rtos.c:55:
  /usr/src/linux-headers-3.13.0-32/arch/x86/include/asm/bitops.h:70:24: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/src/linux-headers-3.13.0-32/arch/x86/include/asm/bitops.h:108:24: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘void’
    /usr/src/linux-headers-3.13.0-32/arch/x86/include/asm/bitops.h:218:24: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘int’
    /usr/src/linux-headers-3.13.0-32/arch/x86/include/asm/bitops.h:310:24: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘int’

/usr/src/linux-headers-3.13.0-32/arch/x86/include/asm/bitops.h中的第218行,显示错误是以下代码段的第一行。

static __always_inline int
test_and_set_bit_lock(long nr, volatile unsigned long *addr)
{
        return test_and_set_bit(nr, addr);
}

我发现这种功能定义不正确。

如果我在Makefile中遗漏了某些内容,请给我一些指示。

1 个答案:

答案 0 :(得分:2)

CFLAGS = -I/usr/src/linux-headers-3.13.0-32/include 
CFLAGS += -I/usr/src/linux-headers-3.13.0-32/arch/x86/include

不要那样做。

这些标头用于Linux内核和内核模块。它们不适用于用户空间应用程序。

根据您需要的原子操作,您可以使用GCC's atomic builtins作为更兼容的替代方案。