/usr/share/dune/cmake/modules/CheckForPthreads.c is in libdune-common-dev 2.4.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 | // file copied from CMake 3.2.1,
// remove together with FindThreadsCMake31.cmake
#include <stdio.h>
#include <pthread.h>
#include <unistd.h>
void* runner(void*);
int res = 0;
#ifdef __CLASSIC_C__
int main(){
int ac;
char*av[];
#else
int main(int ac, char*av[]){
#endif
pthread_t tid[2];
pthread_create(&tid[0], 0, runner, (void*)1);
pthread_create(&tid[1], 0, runner, (void*)2);
#if defined(__BEOS__) && !defined(__ZETA__) // (no usleep on BeOS 5.)
usleep(1); // for strange behavior on single-processor sun
#endif
pthread_join(tid[0], 0);
pthread_join(tid[1], 0);
if(ac > 1000){return *av[0];}
return res;
}
void* runner(void* args)
{
int cc;
for ( cc = 0; cc < 10; cc ++ )
{
printf("%d CC: %d\n", (int)args, cc);
}
res ++;
return 0;
}
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