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-rw-r--r--libbb/time.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/libbb/time.c b/libbb/time.c
index 3aa0ee3..07c0094 100644
--- a/libbb/time.c
+++ b/libbb/time.c
@@ -12,6 +12,12 @@
#if ENABLE_MONOTONIC_SYSCALL
#include <sys/syscall.h>
+/* Old glibc (< 2.3.4) does not provide this constant. We use syscall
+ * directly so this definition is safe. */
+#ifndef CLOCK_MONOTONIC
+#define CLOCK_MONOTONIC 1
+#endif
+
/* libc has incredibly messy way of doing this,
* typically requiring -lrt. We just skip all this mess */
unsigned long long monotonic_us(void)