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libvirt/README-hacking
Pavel Hrdina f96395e78e build: mandate use of a build dir != src dir
Historically we've allowed builds in the main src dir, but meson does
not support this. Explicitly force separate build dir in autotools to
align with meson. We must re-enable dependency tracking which the RPM
%configure macro turns off. Without this, the build dir doesn't get
the source directory tree mirrored.

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
2019-11-08 17:07:35 +01:00

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-*- outline -*-
These notes intend to help people working on the checked-out sources.
These requirements do not apply when building from a distribution tarball.
See also docs/hacking.html (after building libvirt using the information
included in this file) for more detailed contribution guidelines.
* Requirements
We've opted to keep only the highest-level sources in the GIT repository.
This eases our maintenance burden, (fewer merges etc.), but imposes more
requirements on anyone wishing to build from the just-checked-out sources.
Note the requirements to build the released archive are much less and
are just the requirements of the standard configure && make procedure.
Specific development tools and versions will be checked for and listed by
the bootstrap script.
Valgrind <http://valgrind.org/> is also highly recommended, if
Valgrind supports your architecture.
While building from a just-cloned source tree may require installing a
few prerequisites, later, a plain `git pull && make' should be sufficient.
* First GIT checkout
You can get a copy of the source repository like this:
$ git clone https://libvirt.org/git/libvirt.git
$ cd libvirt
As an optional step, if you already have a copy of the gnulib git
repository on your hard drive, then you can use it as a reference to
reduce download time and disk space requirements:
$ export GNULIB_SRCDIR=/path/to/gnulib
We require to have the build directory different than the source directory:
$ mkdir build && cd build
The next step is to get all required pieces from gnulib,
to run autoreconf, and to invoke ../autogen.sh:
$ ../autogen.sh
And there you are! Just
$ make
$ make check
At this point, there should be no difference between your local copy,
and the GIT master copy:
$ cd ..
$ git diff
should output no difference.
Enjoy!
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