On automation, this brings Windows configure time on a clobber from 5:30 to 3:10.
Sadly, because make needs to run under intl/icu/host before configuring
intl/icu/target, intl/icu/host needs to be configured independently. Fortunately,
that's not configured for normal windows builds anyways.
Also, having multiple subconfigures sharing the same cache file is dangerously
racy. Fortunately, not a lot do. In fact, only js/src and $_subconfigure_subdir
do, so force the latter (only used for ldap sdk on comm-central) not to
configure in parallel.
This saves dexing and shipping the Google Play Services and other Google
libraries, which add resources and about 3megs of code.
Due to ordering issues, the relevant flags and toggles were moved to
configure.in and exposed early enough to be used by confvars.sh.
While bug 903369 added some kind of wrapping, msys mangling on Windows made
it hard to make the python wrapper invoke subconfigures itself. This change
overcomes this, allowing to run subconfigures entirely independently of
the main configure if necessary, or to do more fancy checks without having
to resort to m4 and shell.
All subconfigures are essentially doing it already, so just inverse the process. That would also limit problems with additional subconfigures (all the recent ones had to come with their own config.cache)
This adds a format option to mach environment and uses it in client.mk to
create a .mozconfig.json in the objdir, containing all the relevant data
from mozconfig. If the mozconfig doesn't change in a way that alters that
data, we still skip configure.
At the same time, use mach environment in place of mozconfig2configure and
mozconfig2client-mk, which makes us now have only one mozconfig reader.
Also, in the mozconfig reader, keep track of environment variables (as
opposed to shell variables), so that changes such as a variable that was
exported not being exported anymore is spotted. At the opposite, in order
for irrelevant environment variable changes not to incur in re-running
configure, only a set of environment variables are stored when they are
unmodified. Otherwise, changes such as using a different terminal window,
or even rebooting, would trigger reconfigures.
Finally, make mach environment emit both MOZ_OBJDIR and OBJDIR for
client.mk, and cleanup some objdir-related things in client.mk..
At the same time, make the mozconfig reader take MOZ_OBJDIR from the
environment if it is defined there and not in the mozconfig.
CLOSED TREE (but for the commit above this because the commit hook only
appears to look at the tip commit)
--HG--
extra : rebase_source : c88e7e3f4d24dcd59a1a0b5577e3a77da68f3d08
extra : amend_source : 5be936181048b01850e9ef91c25fa0c7363d118d
