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| author |  Reuben Hawkins <reubenhwk@gmail.com> | 2015-01-08 12:00:56 -0800 |
|---|---|---|
| committer |  Junio C Hamano <gitster@pobox.com> | 2015-01-09 15:33:39 -0800 |
| commit | a6c3c638acea34116c6be7cc4be41a9bc55a7fa1 (patch) | |
| tree | b1921a1fdacdf8d6e27ff9db1c9e60be16046ffc | |
| parent | configure.ac: check 'tv_nsec' field in 'struct stat' (diff) | |
| download | tgif-a6c3c638acea34116c6be7cc4be41a9bc55a7fa1.tar.xz | |
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>
| -rw-r--r-- | Makefile | 6 | ||||
| -rw-r--r-- | config.mak.uname | 1 | ||||
| -rw-r--r-- | configure.ac | 22 | ||||
| -rw-r--r-- | trace.c | 2 |
4 files changed, 30 insertions, 1 deletions
@@ -343,6 +343,8 @@ all:: # return NULL when it receives a bogus time_t. # # Define HAVE_CLOCK_GETTIME if your platform has clock_gettime in librt. +# +# Define HAVE_CLOCK_MONOTONIC if your platform has CLOCK_MONOTONIC in librt. GIT-VERSION-FILE: FORCE @$(SHELL_PATH) ./GIT-VERSION-GEN @@ -1402,6 +1404,10 @@ ifdef HAVE_CLOCK_GETTIME EXTLIBS += -lrt endif +ifdef HAVE_CLOCK_MONOTONIC + BASIC_CFLAGS += -DHAVE_CLOCK_MONOTONIC +endif + ifeq ($(TCLTK_PATH),) NO_TCLTK = NoThanks endif diff --git a/config.mak.uname b/config.mak.uname index f3c93f27c9..b64b63c34c 100644 --- a/config.mak.uname +++ b/config.mak.uname @@ -35,6 +35,7 @@ ifeq ($(uname_S),Linux) LIBC_CONTAINS_LIBINTL = YesPlease HAVE_DEV_TTY = YesPlease HAVE_CLOCK_GETTIME = YesPlease + HAVE_CLOCK_MONOTONIC = YesPlease endif ifeq ($(uname_S),GNU/kFreeBSD) HAVE_ALLOCA_H = YesPlease 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=], @@ -322,7 +322,7 @@ int trace_want(struct trace_key *key) return !!get_trace_fd(key); } -#ifdef HAVE_CLOCK_GETTIME +#if defined(HAVE_CLOCK_GETTIME) && defined(HAVE_CLOCK_MONOTONIC) static inline uint64_t highres_nanos(void) { |