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From 9d2d0fe1e3f28a639c26b62391f79cfd1450d91b Mon Sep 17 00:00:00 2001
From: Evangelos Foutras <evangelos@foutrelis.com>
Date: Sat, 20 Apr 2013 00:17:08 +0300
Subject: [PATCH] build-sys: prevent library underlinking

Underlinking can cause subtle bugs like the recent issue with
libnss_myhostname (which was fixed in commit 1e335af7).
---
 configure.ac | 1 +
 1 file changed, 1 insertion(+)

diff --git a/configure.ac b/configure.ac
index 5173783..ce02ff6 100644
--- a/configure.ac
+++ b/configure.ac
@@ -144,6 +144,7 @@ AC_SUBST([OUR_CPPFLAGS], $with_cppflags)
 
 CC_CHECK_FLAGS_APPEND([with_ldflags], [LDFLAGS], [\
         -Wl,--as-needed \
+        -Wl,--no-undefined \
         -Wl,--gc-sections \
         -Wl,-z,relro \
         -Wl,-z,now])
-- 
1.8.2.1