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authorReuben Hawkins <reubenhwk@gmail.com>2015-01-08 12:00:56 -0800
committerJunio C Hamano <gitster@pobox.com>2015-01-09 15:33:39 -0800
commita6c3c638acea34116c6be7cc4be41a9bc55a7fa1 (patch)
treeb1921a1fdacdf8d6e27ff9db1c9e60be16046ffc /configure.ac
parent8bd2c972b1e2343620cad5b0f56de0f2524b7564 (diff)
downloadgit-a6c3c638acea34116c6be7cc4be41a9bc55a7fa1.tar.gz
configure.ac: check for clock_gettime and CLOCK_MONOTONIC
Set or clear Makefile variables HAVE_CLOCK_GETTIME and HAVE_CLOCK_MONOTONIC based upon results of the checks (overriding default values from config.mak.uname). CLOCK_MONOTONIC isn't available on RHEL3, but there are still RHEL3 systems being used in production. Signed-off-by: Reuben Hawkins <reubenhwk@gmail.com> Reviewed-by: Eric Sunshine <sunshine@sunshineco.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'configure.ac')
-rw-r--r--configure.ac22
1 files changed, 22 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac
index 583af8ab5f..6361dcbd50 100644
--- a/configure.ac
+++ b/configure.ac
@@ -947,6 +947,28 @@ AC_CHECK_LIB([iconv], [locale_charset],
[CHARSET_LIB=-lcharset])])
GIT_CONF_SUBST([CHARSET_LIB])
#
+# Define HAVE_CLOCK_GETTIME=YesPlease if clock_gettime is available.
+GIT_CHECK_FUNC(clock_gettime,
+ [HAVE_CLOCK_GETTIME=YesPlease],
+ [HAVE_CLOCK_GETTIME=])
+GIT_CONF_SUBST([HAVE_CLOCK_GETTIME])
+
+AC_DEFUN([CLOCK_MONOTONIC_SRC], [
+AC_LANG_PROGRAM([[
+#include <time.h>
+clockid_t id = CLOCK_MONOTONIC;
+]])])
+
+#
+# Define HAVE_CLOCK_MONOTONIC=YesPlease if CLOCK_MONOTONIC is available.
+AC_MSG_CHECKING([for CLOCK_MONOTONIC])
+AC_COMPILE_IFELSE([CLOCK_MONOTONIC_SRC],
+ [AC_MSG_RESULT([yes])
+ HAVE_CLOCK_MONOTONIC=YesPlease],
+ [AC_MSG_RESULT([no])
+ HAVE_CLOCK_MONOTONIC=])
+GIT_CONF_SUBST([HAVE_CLOCK_MONOTONIC])
+#
# Define NO_SETITIMER if you don't have setitimer.
GIT_CHECK_FUNC(setitimer,
[NO_SETITIMER=],