empty: fix compile with toolchain w/o threads

As found via autobuilders and discussed on the list, the
ifdef is wrong, as empty uses SysV semaphores and not POSIX
semaphores.

Tested with glibc/uclibc-ng builds. And with uclibc-ng without
threads.

Signed-off-by: Waldemar Brodkorb <wbx@openadk.org>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
This commit is contained in:
Waldemar Brodkorb 2015-07-09 11:31:40 +02:00 committed by Thomas Petazzoni
parent 0b84959fbb
commit 9dd523c48f

View file

@ -0,0 +1,49 @@
empty uses SysV semaphores, so the ifdef is wrong here.
Signed-off-by: Waldemar Brodkorb <wbx@openadk.org>
--- empty-0.6.19b.orig/empty.c 2012-09-19 13:24:05.000000000 +0200
+++ empty-0.6.19b/empty.c 2015-07-09 02:00:09.000000000 +0200
@@ -179,25 +179,23 @@ int main (int argc, char *argv[]) {
2 - unknown */
/* semaphores */
-#ifdef _POSIX_SEMAPHORES
- #if defined(__linux__) && defined(__GNU_LIBRARY__) && !defined(_SEM_SEMUN_UNDEFINED)
- /* union semun is defined by including <sys/sem.h> */
- #else
- union semun {
- int val;
- struct semid_ds *buf;
- #ifdef __SVR4
- ushort_t *array;
- #endif
- #ifdef __hpux__
- ushort *array;
- #endif
- #ifdef __linux__
- unsigned short *array;
- struct seminfo *__buf; /* buffer for IPC_INFO */
- #endif
- };
- #endif
+#if defined(__linux__) && defined(__GNU_LIBRARY__) && !defined(_SEM_SEMUN_UNDEFINED)
+ /* union semun is defined by including <sys/sem.h> */
+#else
+ union semun {
+ int val;
+ struct semid_ds *buf;
+ #ifdef __SVR4
+ ushort_t *array;
+ #endif
+ #ifdef __hpux__
+ ushort *array;
+ #endif
+ #ifdef __linux__
+ unsigned short *array;
+ struct seminfo *__buf; /* buffer for IPC_INFO */
+ #endif
+ };
#endif
union semun semu;