Check CLOCK_MONOTONIC_* at runtime if needed.

(We need this to avoid compile errors on cygwin.  Fixes github issue
75.)

diff --git a/evutil_time.c b/evutil_time.c
index 937e7e371c30c8901119c5635921dc637939248b..e433043e4d2bd008c2f1aa87f37bffa3bf8d5f19 100644 (file)
--- a/evutil_time.c
+++ b/evutil_time.c
@@ -184,12 +184,13 @@ evutil_configure_monotonic_time_(struct evutil_monotonic_timer *base,
        struct timespec ts;
 
 #ifdef CLOCK_MONOTONIC_COARSE
-#if CLOCK_MONOTONIC_COARSE < 0
-       /* Technically speaking, nothing keeps CLOCK_* from being negative (as
-        * far as I know). This check and the one below make sure that it's
-        * safe for us to use -1 as an "unset" value. */
-#error "I didn't expect CLOCK_MONOTONIC_COARSE to be < 0"
-#endif
+       if (CLOCK_MONOTONIC_COARSE < 0) {
+               /* Technically speaking, nothing keeps CLOCK_* from being
+                * negative (as far as I know). This check and the one below
+                * make sure that it's safe for us to use -1 as an "unset"
+                * value. */
+               event_errx(1,"I didn't expect CLOCK_MONOTONIC_COARSE to be < 0");
+       }
        if (! precise && ! fallback) {
                if (clock_gettime(CLOCK_MONOTONIC_COARSE, &ts) == 0) {
                        base->monotonic_clock = CLOCK_MONOTONIC_COARSE;
@@ -202,9 +203,9 @@ evutil_configure_monotonic_time_(struct evutil_monotonic_timer *base,
                return 0;
        }
 
-#if CLOCK_MONOTONIC < 0
-#error "I didn't expect CLOCK_MONOTONIC to be < 0"
-#endif
+       if (CLOCK_MONOTONIC < 0) {
+               event_errx(1,"I didn't expect CLOCK_MONOTONIC to be < 0");
+       }
 
        base->monotonic_clock = -1;
        return 0;