On Mon, Dec 25, 2017 at 01:43:13AM +0900, Osamu Aoki wrote:
> maildrop source tree can be build with different build option to produce
> maildrop program in 2 ways for each arch.
>
> * set GID mail without restricted caller (maildrop)
> * set UID root with restricted caller for courier-mta
> (maildrop-courier) -- This is now missing in archive but we used to
> have it.
>
> Of course we can build 2 source packages to do this. But is there any
> easy clean way to do this without making 2 source packages with
> identical upstream tarball.
>
> Any pointer to a simple example which uses autotools as its build script
> is appreciated. (Program example simpler than glibc or linux kernel is
> appreciated.)
While autotools in principle do support out-of-tree builds, a particular
program might still fail. And, most non-autotools non-cmake build systems
don't support that at all.
In such cases, there's a heavy hammer of linking the whole build tree to
two temporary directories, and building from those.
For example, crawl does:
tree-stamp:
dh_testdir
mkdir build-console
cp -ldpR docs settings source CREDITS.txt build-console/
mkdir build-tiles
cp -ldpR docs settings source CREDITS.txt build-tiles/
touch tree-stamp
then for actual build:
cd build-console/source && $(MAKE) $(ARGS_CONSOLE)
cd build-tiles/source && $(MAKE) $(ARGS_TILES)
Meow!
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