From: Lada Trimasova <ltrimas@synopsys.com>
Date: Tue, 26 Jan 2016 15:34:50 +0000 (+0300)
Subject: buildsys: fix static configuration and building
X-Git-Tag: v2.28-rc1~146^2
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=bf6be9f5238a0db221089f87a601738a110bd4d6;p=thirdparty%2Futil-linux.git

buildsys: fix static configuration and building

In case of uClibc librt depends on libpthread. In particular
timer_create() function uses pthread_XXX(). That means in case of static
builds it's required to link not librt alone but together with libpthread. So
if checking timer_create function in librt fails, it is necessary to check if
timer_create function successfully links with "-lpthread".

That issues was spotted in Buldroot autobuilder failures:
http://autobuild.buildroot.net/results/759/75960db671807091fe9155aee9e46a6245e32590/
http://autobuild.buildroot.org/results/112/112e8b85783f5aaba42a937a6eb064317615a21b/

Signed-off-by: Lada Trimasova <ltrimas@synopsys.com>
---

diff --git a/configure.ac b/configure.ac
index 3002e77a22..75e8690644 100644
--- a/configure.ac
+++ b/configure.ac
@@ -394,7 +394,14 @@ AC_CHECK_FUNCS([timer_create],
 	[AC_CHECK_LIB([rt], [timer_create], [
 		have_timer="yes"
 		REALTIME_LIBS="-lrt"
-	])]
+	],[
+		AC_SEARCH_LIBS([timer_create], [rt], [
+			AC_MSG_RESULT(yes)
+			have_timer="yes"
+			REALTIME_LIBS="-lrt -lpthread"
+		],[], [-lpthread]
+		)
+		])]
 )
 
 AC_SUBST([REALTIME_LIBS])