From 5e029db4971e37437cfe6147d52d00136dfb8cb5 Mon Sep 17 00:00:00 2001
From: Akira TAGOH <akira@tagoh.org>
Date: Mon, 21 Oct 2013 12:16:46 +0900
Subject: Fix the dynamic loading issue on NetBSD

On NetBSD, it is not supported to load a library linked against
libpthread into a program that wasn't (since the C library provides
stubs for some pthread-functions, which might have already been called
before libpthread is loaded, leading to problems).

Patch from Matthias Drochner
---
 m4/ax_pthread.m4 | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'm4')

diff --git a/m4/ax_pthread.m4 b/m4/ax_pthread.m4
index d383ad5c..e77541ce 100644
--- a/m4/ax_pthread.m4
+++ b/m4/ax_pthread.m4
@@ -162,6 +162,11 @@ case ${host_os} in
         darwin*)
         ax_pthread_flags="-pthread $ax_pthread_flags"
         ;;
+	netbsd*)
+	# use libc stubs, don't link against libpthread, to allow
+	# dynamic loading
+	ax_pthread_flags=""
+	;;
 esac
 
 # Clang doesn't consider unrecognized options an error unless we specify
-- 
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