configure: check properly for the monotonic clock POSIX option

ClusterLabs · Oct 12, 2017 · 74f7cdc · 74f7cdc
1 parent c85640e
commit 74f7cdc
Showing 1 changed file with 5 additions and 11 deletions.
diff --git a/configure.ac b/configure.ac
@@ -182,18 +182,12 @@ AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
                     ]
                  )
 
-AC_MSG_CHECKING(for a working clock_getres(CLOCK_MONOTONIC, &ts))
+AC_MSG_CHECKING([for the monotonic clock POSIX option])
 AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
-[[#include <time.h>]],
-[[struct timespec ts; if(clock_getres(CLOCK_MONOTONIC, &ts)) return -1;]])],
-                    [
-                      AC_MSG_RESULT([yes])
-                      AC_DEFINE_UNQUOTED([HAVE_CLOCK_GETRES_MONOTONIC], 1, [Define to 1 if clock_getres(CLOCK_MONOTONIC, &ts) works])
-                    ],
-                    [
-                      AC_MSG_RESULT([no])
-                    ]
-                 )
+[[#include <unistd.h>]],
+[[/* positive value signifies unconditional availability */
+  int a[_POSIX_MONOTONIC_CLOCK-1];]])],
+ [AC_MSG_RESULT([yes])],[AC_MSG_FAILURE([no])])
 
 
 # Checks for library functions