set stdio

if tst note{ _ALL_SOURCE & _ISOC99_SOURCE & _POSIX_SOURCE & _POSIX_C_SOURCE & _XOPEN_SOURCE & __EXTENSIONS__ works }end compile{

#define _ALL_SOURCE 1

#define _ISOC99_SOURCE 1

#define _POSIX_SOURCE 1

#define _POSIX_C_SOURCE 21000101L

#define _XOPEN_SOURCE 9900

#define _GNU_SOURCE 1

#define __EXTENSIONS__ 1

#include <sys/types.h>

#include <sys/stat.h>

#include <stdlib.h>

#include <unistd.h>

}end {

#ifndef _ALL_SOURCE

#define _ALL_SOURCE 1

#endif

#ifndef _ISOC99_SOURCE

#define _ISOC99_SOURCE 1

#endif

#ifndef _POSIX_SOURCE

#define _POSIX_SOURCE 1

#endif

#ifndef _POSIX_C_SOURCE

#define _POSIX_C_SOURCE 21000101L

#endif

#ifndef _XOPEN_SOURCE

#define _XOPEN_SOURCE 9900

#endif

#ifndef _GNU_SOURCE

#define _GNU_SOURCE 1

#endif

#ifndef __EXTENSIONS__

#define __EXTENSIONS__ 1

#endif

}

elif tst note{ _ALL_SOURCE & _ISOC99_SOURCE & _POSIX_SOURCE & _XOPEN_SOURCE & __EXTENSIONS__ works }end compile{

#define _ALL_SOURCE 1

#define _ISOC99_SOURCE 1

#define _POSIX_SOURCE 1

#define _XOPEN_SOURCE 9900

#define _GNU_SOURCE 1

#define __EXTENSIONS__ 1

#include <sys/types.h>

#include <sys/stat.h>

#include <stdlib.h>

#include <unistd.h>

}end {

#ifndef _ALL_SOURCE

#define _ALL_SOURCE 1

#endif

#ifndef _ISOC99_SOURCE

#define _ISOC99_SOURCE 1

#endif

#ifndef _POSIX_SOURCE

#define _POSIX_SOURCE 1

#endif

#ifndef _XOPEN_SOURCE

#define _XOPEN_SOURCE 9900

#endif

#ifndef _GNU_SOURCE

#define _GNU_SOURCE 1

#endif

#ifndef __EXTENSIONS__

#define __EXTENSIONS__ 1

#endif

}

elif tst note{ _ISOC99_SOURCE & _POSIX_SOURCE & _POSIX_C_SOURCE & _XOPEN_SOURCE & __EXTENSIONS__ works }end compile{

#define _ISOC99_SOURCE 1

#define _POSIX_SOURCE 1

#define _POSIX_C_SOURCE 21000101L

#define _XOPEN_SOURCE 9900

#define _GNU_SOURCE 1

#define __EXTENSIONS__ 1

#include <sys/types.h>

#include <sys/stat.h>

#include <stdlib.h>

#include <unistd.h>

}end {

#ifndef _ISOC99_SOURCE

#define _ISOC99_SOURCE 1

#endif

#ifndef _POSIX_SOURCE

#define _POSIX_SOURCE 1

#endif

#ifndef _POSIX_C_SOURCE

#define _POSIX_C_SOURCE 21000101L

#endif

#ifndef _XOPEN_SOURCE

#define _XOPEN_SOURCE 9900

#endif

#ifndef _GNU_SOURCE

#define _GNU_SOURCE 1

#endif

#ifndef __EXTENSIONS__

#define __EXTENSIONS__ 1

#endif

}

elif tst note{ _POSIX_SOURCE & _XOPEN_SOURCE & __EXTENSIONS__ works }end compile{

#define _POSIX_SOURCE 1

#define _XOPEN_SOURCE 1

#define __EXTENSIONS__ 1

#include <sys/types.h>

#include <sys/stat.h>

#include <stdlib.h>

#include <unistd.h>

}end {

#ifndef _POSIX_SOURCE

#define _POSIX_SOURCE 1

#endif

#ifndef _XOPEN_SOURCE

#define _XOPEN_SOURCE 1

#endif

#ifndef __EXTENSIONS__

#define __EXTENSIONS__ 1

#endif

}

elif tst note{ _XOPEN_SOURCE & __EXTENSIONS__ works }end compile{

#define _XOPEN_SOURCE 1

#define __EXTENSIONS__ 1

#include <sys/types.h>

#include <sys/stat.h>

#include <stdlib.h>

#include <unistd.h>

}end {

#ifndef _XOPEN_SOURCE

#define _XOPEN_SOURCE 1

#endif

#ifndef __EXTENSIONS__

#define __EXTENSIONS__ 1

#endif

}

elif tst note{ _XOPEN_SOURCE works }end compile{

#define _XOPEN_SOURCE 1

#include <sys/types.h>

#include <sys/stat.h>

#include <stdlib.h>

#include <unistd.h>

}end {

#ifndef _XOPEN_SOURCE

#define _XOPEN_SOURCE 1

#endif

}

else tst note{ __EXTENSIONS__ works }end compile{

#define __EXTENSIONS__ 1

#include <sys/types.h>

#include <sys/stat.h>

}end {

#ifndef __EXTENSIONS__

#define __EXTENSIONS__ 1

#endif

}

endif