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* m4: resolve autoconf-2.68 warningsJan Engelhardt2011-12-171-2/+2
| | | | | | | | | | Newer autoconf desires proper full quoting and use of AC_LANG_SOURCE. Import new m4 file from git://dev.medozas.de/m4_jengelh. m4/gcc4_visibility.m4:4: CHECK_GCC_FVISIBILITY is expanded from... configure.ac:15: the top level configure.ac:15: warning: AC_LANG_CONFTEST: no AC_LANG_SOURCE call detected in body
* build: tag function headers rather than decls as exportedJan Engelhardt2010-11-192-52/+21
| | | | Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* src: implement both GCC visibility support and export scriptCristian Rodríguez2010-11-151-0/+52
| | | | | | | | | Read "How to write shared libraries" from Ulrich Drepper for more information on this patch. Specifically section 2.2: Export control and section 3: Maintaining APIs and ABIs. Signed-off-by: Cristian Rodríguez <cristian.rodriguez@opensuse.org> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
* add missing .gitignore file to m4/ directoryPablo Neira Ayuso2010-09-081-0/+2
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>