当我想制作 libsvm 时出现“make”错误（系统：MAC OS X 10.12.6）

Posted 2023-03-12

【中文标题】当我想制作 libsvm 时出现“make”错误（系统：MAC OS X 10.12.6）

【英文标题】："make" error when I want to make libsvm (system : MAC OS X 10.12.6)

【发布时间】：2018-04-06 06:29:12

【问题描述】：

当我在 libsvm/python 文件夹下制作时，终端显示：

make -C .. lib
c++ -Wall -Wconversion -O3 -fPIC -fopenmp -c svm.cpp
clang: error: unsupported option '-fopenmp'
make[1]: *** [svm.o] Error 1
make: *** [lib] Error 2

所以我试图找出错误，我认为这是我的gcc编译的问题，因为我之前更改了一些文件。

所以我开始测试它。 只需简单地写一个test.c

#include <stdio.h>
int main()

    printf("Hello World");

我使用了命令：

gcc test.c -o test

和

./test

有很多错误

In file included from tset.c:1:
/usr/include/stdio.h:242:81: error: expected function body after function declarator
FILE    *fopen(const char * __restrict __filename, const char * __restrict __mode) __DARWIN_ALIAS_STARTING(...
                                                                                   ^
/usr/include/stdio.h:244:63: error: expected function body after function declarator
int      fprintf(FILE * __restrict, const char * __restrict, ...) __printflike(2, 3);
                                                                  ^
/usr/include/stdio.h:246:56: error: expected function body after function declarator
int      fputs(const char * __restrict, FILE * __restrict) __DARWIN_ALIAS(fputs);
                                                           ^
/usr/include/stdio.h:249:37: error: expected function body after function declarator
                 FILE * __restrict) __DARWIN_ALIAS(freopen);
                                    ^
/usr/include/stdio.h:250:62: error: expected function body after function declarator
int      fscanf(FILE * __restrict, const char * __restrict, ...) __scanflike(2, 3);
                                                                 ^
/usr/include/stdio.h:254:107: error: expected function body after function declarator
  ...void * __restrict __ptr, size_t __size, size_t __nitems, FILE * __restrict __stream) __DARWIN_ALIAS(fwrite);
                                                                                          ^
/usr/include/stdio.h:259:43: error: expected function body after function declarator
int      printf(const char * __restrict, ...) __printflike(1, 2);
                                              ^
/usr/include/stdio.h:266:42: error: expected function body after function declarator
int      scanf(const char * __restrict, ...) __scanflike(1, 2);
                                             ^
/usr/include/stdio.h:269:63: error: expected function body after function declarator
int      sprintf(char * __restrict, const char * __restrict, ...) __printflike(2, 3) __swift_unavailable("U...
                                                                  ^
/usr/include/stdio.h:270:68: error: expected function body after function declarator
int      sscanf(const char * __restrict, const char * __restrict, ...) __scanflike(2, 3);
                                                                       ^
/usr/include/stdio.h:273:21: error: expected parameter declarator
__swift_unavailable("Use mkstemp(3) instead.")
                    ^
/usr/include/stdio.h:273:21: error: expected ')'
/usr/include/stdio.h:273:20: note: to match this '('
__swift_unavailable("Use mkstemp(3) instead.")
                   ^
/usr/include/stdio.h:275:1: error: expected function body after function declarator
__deprecated_msg("This function is provided for compatibility reasons only.  Due to security concerns inher...
^
/usr/include/stdio.h:279:68: error: expected function body after function declarator
int      vfprintf(FILE * __restrict, const char * __restrict, va_list) __printflike(2, 0);
                                                                       ^
/usr/include/stdio.h:280:48: error: expected function body after function declarator
int      vprintf(const char * __restrict, va_list) __printflike(1, 0);
                                                   ^
/usr/include/stdio.h:281:68: error: expected function body after function declarator
int      vsprintf(char * __restrict, const char * __restrict, va_list) __printflike(2, 0) __swift_unavailab...
                                                                       ^
/usr/include/stdio.h:461:65: error: expected function body after function declarator
int      asprintf(char ** __restrict, const char * __restrict, ...) __printflike(2, 3);
                                                                    ^
/usr/include/stdio.h:468:70: error: expected function body after function declarator
int      vasprintf(char ** __restrict, const char * __restrict, va_list) __printflike(2, 0);
                                                                         ^
tset.c:4:4: warning: implicitly declaring library function 'printf' with type 'int (const char *, ...)'
      [-Wimplicit-function-declaration]
   printf("OK");
   ^
tset.c:4:4: note: include the header <stdio.h> or explicitly provide a declaration for 'printf'
1 warning and 18 errors generated.

我删除了 test.c 中的#include

int main()

  printf("Hello World");
  return 0;

然后再次运行终端显示：

Hello World

只是想知道....为什么

【问题讨论】：

gcc 或 clang?

我用gcc编译，现在我发现问题了，就用brew install libsvm

没有 .. 但我仍然无法编译任何 c 代码

【参考方案1】：

我的 MACOS 好像有问题，我发现我在 /usr/local/.. 中更改了一些 .cpp 或 .h 文件，所以我只是重置了整个系统哈哈哈。多么悲伤的故事