Musl libc does not define the glibc specific macro __GLIBC_PREREQ(), but
it has the clock_adjtime() function. Assume that a libc implementation
which does not define __GLIBC_PREREQ at all still implements
clock_adjtime().
This fixes a build problem with musl libc because the __GLIBC_PREREQ()
macro is missing.
Fixes: 42e1358e103d ("ptp: In the testptp utility, use clock_adjtime from glibc when available")
Signed-off-by: Hauke Mehrtens <hauke@xxxxxxxxxx>
---
tools/testing/selftests/ptp/testptp.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/tools/testing/selftests/ptp/testptp.c b/tools/testing/selftests/ptp/testptp.c
index f7911aaeb007..ecffe2c78543 100644
--- a/tools/testing/selftests/ptp/testptp.c
+++ b/tools/testing/selftests/ptp/testptp.c
@@ -38,6 +38,7 @@
#define NSEC_PER_SEC 1000000000LL
/* clock_adjtime is not available in GLIBC < 2.14 */
+#ifdef __GLIBC_PREREQ
#if !__GLIBC_PREREQ(2, 14)
#include <sys/syscall.h>
static int clock_adjtime(clockid_t id, struct timex *tx)
@@ -45,6 +46,7 @@ static int clock_adjtime(clockid_t id, struct timex *tx)
return syscall(__NR_clock_adjtime, id, tx);
}
#endif
+#endif /* __GLIBC_PREREQ */
static void show_flag_test(int rq_index, unsigned int flags, int err)
{
--
2.20.1
