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Doug VanLeuven 327c4cdf75 testzebra: pragma weak: detect systems with weak alias and provide alternative 
LLVM clang does not support #pragma weak (bug 3679) on OS X. There are
other systems where the #pragma weak has varying syntax.

Added m4 file from the autoconf archives:
http://www.gnu.org/software/autoconf-archive/ax_sys_weak_alias.html

Fix up zebra/*_null.c files to use #pragma weak alias or stub functions
if not available. It's incomplete in that the different format #pragma
enable easier fixes on need.

Tested on 64bit OS X 10.7, FreeBSD 9.0 amd64 & i386 (32bit) using
gcc & clang. Tested on linux 64bit.

Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
2013-01-11 21:50:06 +01:00
..
.gitignore [administrivia] Git should ignore backup files and .loT files 2008-08-22 20:00:46 +01:00
ax_sys_weak_alias.m4 testzebra: pragma weak: detect systems with weak alias and provide alternative 2013-01-11 21:50:06 +01:00
Makefile.am [trivia] Make 'make dist' happy about ChangeLog expunge 2008-08-23 08:36:42 +01:00
README.txt 2004-08-19 Paul Jakma <paul@dishone.st> 2004-08-19 04:34:29 +00:00

README.txt 

This directory contains local additions to/overrides for the Quagga
autoconf build system.

At this time additions are:

- m4 files taken from libtool CVS circa august 2004. These have been
imported into Quagga as they are more robust with respect to configuring
libtool support for languages which Quagga does not use. As and when libtool
releases become commonly available with that capability, these can be
removed. The files are:

	argz.m4
	libtool.m4
	ltdl.m4
	ltoptions.m4
	ltsugar.m4
	ltversion.m4