Without this patch, linking the test programs fails like this: /usr/bin/ld: ../src/.libs/libvirt_test.a(libvirt_util_la-util.o): undefined reference to symbol &#39;pthread_sigmask@(a)GLIBC_2.2.5&#39; /usr/bin/ld: note: &#39;pthread_sigmask@(a)GLIBC_2.2.5&#39; is defined in DSO /lib64/libpthread.so.0 so try adding it to the linker command line /lib64/libpthread.so.0: could not read symbols: Invalid operation collect2: ld returned 1 exit status make[3]: *** [nodeinfotest] Error 1 From: Jim Meyering <meyering(a)redhat.com&gt; Date: Fri, 7 May 2010 16:23:44 +0200 Subject: [PATCH] avoid link error in tests using libvirt_util; due to pthread_sigmask * src/Makefile.am (libvirt_util_la_LDFLAGS): Add $(LIB_PTHREAD), required, now that we're using gnulib's pthread module. 2010-05-07 Jim Meyering <meyering(a)redhat.com&gt; --- src/Makefile.am | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/src/Makefile.am b/src/Makefile.am index 7182da1..937ee84 100644 --- a/src/Makefile.am +++ b/src/Makefile.am @@ -378,7 +378,7 @@ libvirt_la_LIBADD = libvirt_util.la libvirt_util_la_SOURCES = \ $(UTIL_SOURCES) libvirt_util_la_CFLAGS = $(CAPNG_CFLAGS) $(YAJL_CFLAGS) -libvirt_util_la_LDFLAGS = $(CAPNG_LIBS) $(YAJL_LIBS) +libvirt_util_la_LDFLAGS = $(CAPNG_LIBS) $(YAJL_LIBS) $(LIB_PTHREAD) noinst_LTLIBRARIES += libvirt_conf.la -- 1.7.1.166.gf2086