kc3-lang/libevent/cmake/CheckFunctionExistsEx.c

• Show log

  Commit

• Hash : accf383e
  Author :
  Date : 2018-04-23T01:50:55
  

  Fix CheckFunctionExistsEx() cmake macro on win32
  
  For example under mingw64 it could not detect that strtok_r() exists,
  because it checks with:
    void *p = func_name;
  
  And for this you need the function to be defined, so just sync our
  CheckFunctionExistsEx.c with CheckFunctionExists.c from cmake (and later
  we should drop them out) since it does correct things to detech
  functions existence.
  
  Also for WIN32 there is -FIwinsock2.h -FIws2tcpip.h, and I guess that is
  not works for mingw gcc (since -F in gcc is framework, and in windows
  -FI is like -include in gcc). But looks like we do not need them
  already (due to fixed CheckFunctionExistsEx()).
  
  Refs: #605
  

Download

• cmake/CheckFunctionExistsEx.c

• #ifdef CHECK_FUNCTION_EXISTS
  
  #ifdef __cplusplus
  extern "C"
  #endif
    char
    CHECK_FUNCTION_EXISTS(void);
  #ifdef __CLASSIC_C__
  int main()
  {
    int ac;
    char* av[];
  #else
  int main(int ac, char* av[])
  {
  #endif
    CHECK_FUNCTION_EXISTS();
    if (ac > 1000) {
      return *av[0];
    }
    return 0;
  }
  
  #else /* CHECK_FUNCTION_EXISTS */
  
  #error "CHECK_FUNCTION_EXISTS has to specify the function"
  
  #endif /* CHECK_FUNCTION_EXISTS */
  

Download