[xml/sgml-pkgs] Bug#372945: libxml2-dev: 'xml2-config --libs' doesn't return -lpthread when needed...

[Emmanuel Fleury]

Package: libxml2-dev
Version: 2.6.26.dfsg-1
Severity: normal

When trying to compile xml2 dependent software, it turns out that the
'xml-config --libs' forget about the dependancy on pthreads.

I have no explanation why but when trying to link xml2, I get the error:

/usr/lib/libxml2.a(threads.o): In function `xmlRMutexLock':
(.text+0x478): undefined reference to `pthread_cond_wait'
collect2: ld returned 1 exit status
make[1]: *** [server] Error 1
make: *** [default] Error 2

And xml2-config gives:
[fleury at stormbringer tests]$ xml2-config --libs
-L/usr/lib -lxml2 -lz -lm

Where a -lpthread would have been required.

More suprisingly, xml2-config.in does support the PTHREAD detection but
doesn't not have this feature activated.

I guess it's up to the developers to agree on the use by default or not
of pthreads in the library.

-- System Information:
Debian Release: testing/unstable
  APT prefers unstable
  APT policy: (500, 'unstable')
Architecture: i386 (i686)
Shell:  /bin/sh linked to /bin/bash
Kernel: Linux 2.6.16.2
Locale: LANG=C, LC_CTYPE=C (charmap=ANSI_X3.4-1968)

Versions of packages libxml2-dev depends on:
ii  libxml2                    2.6.26.dfsg-1 GNOME XML library
ii  zlib1g-dev [libz-dev]      1:1.2.3-11    compression library -
development

libxml2-dev recommends no packages.

-- no debconf information

Regards
-- 
Emmanuel Fleury              | Office: 211
Associate Professor,         | Phone: +33 (0)5 40 00 35 24
LaBRI, Domaine Universitaire | Fax:   +33 (0)5 40 00 66 69
351, Cours de la Libération  | email: fleury at labri.fr
33405 Talence Cedex, France  | URL: http://www.labri.fr/~fleury