configure: Also check for clock_gettime in libpthread

libwinpthreads provides POSIX time API.
It also provides libpthread alias for itself, for compatibility, so that
is what we will link with.

Fixes #697550

diff --git a/configure.ac b/configure.ac
index 1063828..34b7448 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -458,6 +458,11 @@ AC_CHECK_FUNCS(clock_gettime, [], [
   AC_CHECK_LIB(rt, clock_gettime, [
     AC_DEFINE(HAVE_CLOCK_GETTIME, 1)
     LIBS="$LIBS -lrt"
+  ], [
+    AC_CHECK_LIB(pthread, clock_gettime, [
+      AC_DEFINE(HAVE_CLOCK_GETTIME, 1)
+      LIBS="$LIBS -lpthread"
+    ])
   ])
 ])