aur-build: ccache support

[cyrinux]

I'm not sure if ccache is supported.
I think from chroot build cache is lost?
Is it planned to support it?
https://wiki.archlinux.org/index.php/Ccache

Regards

[AladW]

https://wiki.archlinux.org/index.php/Ccache#makechrootpkg

Which brings us to more end-of-options abuse:

aur build -c -- -d /path/to/your/cachedir:/ccache -cu -- CCACHE_DIR=/path/to/your/cachedir

With aur-sync you'd use --bind but the CCACHE_DIR env isn't passed. The above command line depends on makepkg's ability to take environment variables from the command line, see https://git.archlinux.org/pacman.git/tree/scripts/makepkg.sh.in#n1287

[AladW]

#370 should cover this issue and #369

[bartoszek]

With aur-sync you'd use --bind

Won't work, as aur sync ... --bind=${ccache_dir} creates a read-only bind (perhaps add --bind-rw switch alongside --bind).

[bartoszek]

Here's my current invocation for ccache build with aurutils.

aur chroot -B -D /tmp/$(uname -m) -M /etc/makepkg.conf.ccache -d aur-local-repo; arch-nspawn /tmp/$(uname -m)/root pacman --noconfirm -S ccache; aur vercmp-devel|vipe|cut -d: -f1|aur sync -c -D /tmp/$(uname -m) -T --bind-rw=/home/_ccache:/build/.ccache --makepkg-conf=/etc/makepkg.conf.ccache --no-ver-shallow --no-view -; sudo rm -rf /tmp/x86_64/

One things i would consider to include in aurutils to make it nicer
⏫ detecting ccache/distcc in makepkag.conf@BUILDENV and insert those to deps.

• Could be done in aur-sync with querying makepkg.conf and appending ccache to deps array
• Alternatively could be included in aur-chroot by also querying makepkg.conf and appending cache to mkarchroot invocation.
• Eventulay i could be added as extra ops to aur-sync, something like -(I)nstall: ${pkgname} for user to pass additional packages that is needed for build procedure.
• Lastly, as most dirty/simplest resort: just append ccacke distcc to https://github.com/AladW/aurutils/blob/3e89f9eb829f6d031ab19d4b92054d7c89aed26b/lib/aur-chroot#L111

Btw. the last solution seems most resonable to me 😏

[Earnestly]

@bartoszek Since there already exists a fairly clean(?) way to arrange the command-line to do what you want, have you considered simply creating a little aur-foobar tool instead? Or even creating a personal shell function to avoid typing it all out?