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Pair-Programmed-With: Andrew Bartlett <abartlet@samba.org>
Autobuild-User: Andrew Tridgell <tridge@samba.org>
Autobuild-Date: Fri Jan 14 08:19:40 CET 2011 on sn-devel-104
This function is a wrapper around waf's check_python_header.
It avoids searching more than once for the headers bringing a small
speed improvement and a better lisibility of the logs.
But it's mainly to avoid a nasty bug when python libraries are in path
pointed by python_LIBPL (ie. /usr/local/lib/python2.6/config/) instead
of python_LIBDIR (ie. /usr/local/lib).
On the first call waf will correctly find that in order to link with
python libs it needs to add -L$python_LIBPL.
But on the next calls of check_python_headers, waf will use both the
current library path value (ie. -L/usr/local/lib/python2.6/config) and
-L$python_LIBDIR (ie. /usr/local/lib/) which will make him beleive that
python libraries are in $python_LIBDIR which at the end will make the
final link test fails in check_python_headers as it will not use the
good directory.
So by avoiding calling check_python_headers more than once we avoid
making waf fooling itself.
if you use --git-local-changes then the version number that waf
extracts from git will have a '+' on the end if you have local
changes, as determined by running 'git diff'.
This used to be the default, but unfortunately it is far too slow on
some systems. On a NFS build system I was using the first line of
configure took about 2 minutes.
Autobuild-User: Andrew Tridgell <tridge@samba.org>
Autobuild-Date: Tue Nov 16 01:51:54 UTC 2010 on sn-devel-104
this makes our runtime load times smaller, and also means we find bugs
that this may cause on gentoo. gentoo uses this by default
Autobuild-User: Andrew Tridgell <tridge@samba.org>
Autobuild-Date: Wed Nov 3 00:35:56 UTC 2010 on sn-devel-104
- We don't use them anywhere (heimdal has special rules)
- They calculate the version at configure time
and may contain the wrong git hash while building
- If we really need them in future we should add them
to version.h and not config.h, as the changing git hash
will trigger a full rebuild if config.h changes.
metze
moved it out of the general waf build as the s3 waf build cannot yet
handle linking with -Wl,-no-undefined
Pair-Programmed-With: Andrew Bartlett <abartlet@samba.org>
Autobuild-User: Andrew Tridgell <tridge@samba.org>
Autobuild-Date: Mon Oct 25 01:12:15 UTC 2010 on sn-devel-104
this rebuilds version.h whenever the git version changes, so we always
get the right version with samba -V. That adds about 15s to the build
time on each git commit, which shouldn't be too onerous
This currently includes the source3 directory for Samba4 releases (per
past practice in mkrelease.sh), but also could include things like
DFSG-unfree RFC files in the future.
Andrew Barltett
This allows for the following types of commands:
waf smbd/samba
waf smbd/server.c
waf ../lib/util/util_file.c
waf ../lib/util/util_file_*.o
this will be used as part of an updated minimal_includes.pl script
