From 619d0c3232af45ba46864e7e96176dc096e78592 Mon Sep 17 00:00:00 2001
From: Nikos Mavrogiannopoulos <nmav@redhat.com>
Date: Tue, 23 Aug 2016 14:58:10 +0200
Subject: configure: do not link with pthread unless necessary

---
 lib/configure.ac | 20 +++++++++++++++++++-
 1 file changed, 19 insertions(+), 1 deletion(-)

diff --git a/lib/configure.ac b/lib/configure.ac
index b20005a3ff..e638c406fe 100644
--- a/lib/configure.ac
+++ b/lib/configure.ac
@@ -61,6 +61,18 @@ AC_CHECK_TYPE(ssize_t,
     #include <sys/types.h>
   ])
 
+case "$host" in
+  *mingw32* | *mingw64*)
+    have_win=yes
+  ;;
+  *darwin*)
+    have_macosx=yes
+  ;;
+  *)
+    have_elf=yes
+  ;;
+esac
+
 # For minitasn1.
 AC_CHECK_SIZEOF(unsigned long int, 4)
 AC_CHECK_SIZEOF(unsigned int, 4)
@@ -125,7 +137,13 @@ fi
 lgl_INIT
 
 AC_CHECK_FUNCS(getrusage,,)
-AC_LIB_HAVE_LINKFLAGS(pthread,, [#include <pthread.h>], [pthread_mutex_lock (0);])
+
+if test "$have_win" != "yes";then
+  AC_CHECK_FUNCS([pthread_mutex_lock],,)
+  if test "$ac_cv_func_pthread_mutex_lock" != "yes";then
+    AC_LIB_HAVE_LINKFLAGS(pthread,, [#include <pthread.h>], [pthread_mutex_lock (0);])
+  fi
+fi
 
 LIBGNUTLS_LIBS="-L${libdir} -lgnutls $LIBS"
 LIBGNUTLS_CFLAGS="-I${includedir}"
-- 
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