From a9b02de8b79de44ee8f4a0506b65a62f38999bd8 Mon Sep 17 00:00:00 2001
From: Eric Wong <e@80x24.org>
Date: Mon, 18 Jul 2016 10:22:08 +0000
Subject: [PATCH] configure.ac: stronger test for pthread linkage
We need to test linkage of pthread_create and pthread_join,
as pthread_mutex_* and pthread_key_* functions do not need
extra linkage under FreeBSD 10.3, leading to a false-positive
of the empty case.
Signed-off-by: Eric Wong <e@80x24.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
---
configure.ac | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/configure.ac b/configure.ac
index bbdde85c3dc..a06177577c9 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1083,14 +1083,19 @@ GIT_CONF_SUBST([HAVE_BSD_SYSCTL])
AC_DEFUN([PTHREADTEST_SRC], [
AC_LANG_PROGRAM([[
#include <pthread.h>
+static void *noop(void *ignore) { return ignore; }
]], [[
pthread_mutex_t test_mutex;
pthread_key_t test_key;
+ pthread_t th;
int retcode = 0;
+ void *ret = (void *)0;
retcode |= pthread_key_create(&test_key, (void *)0);
retcode |= pthread_mutex_init(&test_mutex,(void *)0);
retcode |= pthread_mutex_lock(&test_mutex);
retcode |= pthread_mutex_unlock(&test_mutex);
+ retcode |= pthread_create(&th, ret, noop, ret);
+ retcode |= pthread_join(th, &ret);
return retcode;
]])])