CMake/Modules/CheckFunctionExists.c

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