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+?RCS: Copyright (c) 2014 Raphael Manfredi
+?RCS: You may redistribute only under the terms of the Artistic License,
+?RCS: as specified in the README file that comes with the distribution.
+?RCS: You may reuse parts of this distribution only within the terms of
+?RCS: that same Artistic License; a copy of which may be found at the root
+?RCS: of the source tree for dist 4.0.
+?MAKE:d_clock_gettime: Trylink cat
+?MAKE: -pick add $@ %<
+?S: This variable conditionally defines HAS_CLOCK_GETTIME when clock_gettime()
+?S: is available to fetch the clock.
+?C: This symbol, if defined, indicates that the clock_gettime() system call is
+?C: available to fetch the clock (CLOCK_REALTIME is a valid clock when the
+?C: symbol is defined).
+?H:#$d_clock_gettime HAS_CLOCK_GETTIME /**/
+?LINT:set d_clock_gettime
+: see whether clock_gettime exists
+$cat >try.c <<EOC
+#include <time.h>
+int main(void)
+ int ret;
+ struct timespec tp;
+ ret = clock_gettime(CLOCK_REALTIME, &tp);
+ return ret ? 0 : 1;
+set d_clock_gettime
+eval $trylink