build/mozconfig.sccache
author Rob Lemley <rob@thunderbird.net>
Mon, 26 Aug 2019 21:20:54 -0400
changeset 35928 0bd1a3c3bee51d0643e1f3e9511876d27df182c1
parent 30137 dbb76057d5faba6fabbf1b15a006c01623d3d0c0
permissions -rw-r--r--
Bug 1507754 - Check source repositories and changesets during configure. r=darktrojan a=jorgk PACKAGERS: if you update application.ini, platform.ini, or source-repo.h in some way during your process, you might need to change something. Make sure that the source repositories for both Mozilla and Comm can be found during mach configure and abort if they cannot. For Taskcluster builds, there are various environment variables that can be relied upon. Local builds present a challenge. Chances are those variables are not set. I came up with a set of checks and keep trying until something works. For comm-* code: - Look for MOZ_SOURCE_REPO and MOZ_SOURCE_CHANGESET environment vars. This is counter-intuitive, but it's the current status-quo for Taskcluster builds. Those variables are set to the comm values. - Next, try use the Mercurial source checkout itself. Uses the same technique as Mozilla code does in build/variables.py. - Last, try to use a file named "sourcestamp.txt". That file is part of our source tar files that get built for releases. - Finally, if those MOZ_SOURCE environment variables were not set, set them. This is needed because old-configure will look for them and set buildconfig variables with them when it runs later during the configure process. - Additionally, set MOZ_COMM_SOURCE_REPO and MOZ_COMM_SOURCE_CHANGESET in buildconfig. Code in the comm- tree should prefer those values over the generic MOZ_SOURCE_* values that the Mozilla code will look at. For the Gecko/Mozilla source repository information, it's almost the same process. - Check for GECKO_SOURCE_REPO and GECKO_SOURCE_REV environment variables first. Taskcluster sets these based on comm/.gecko_rev.yml. - Next, try comm/.gecko_rev.yml itself. PyYAML is not required as the file is pretty simple to parse. Release builds are pinned to a specific revision hash, so we can use that. Builds from comm-central pin to "default" though, so next try running "hg id" in $topsrcdir to get the revision hash. - If for some reason there's no .gecko_rev.yml and it's not a Mercurial checkout, try the sourcestamp.txt file. - Set MOZ_GECKO_SOURCE_REPO and MOZ_GECKO_SOURCE_CHANGESET in buildconfig. mach configure should fail if any one of those values cannot be determined. The error message will suggest setting the environment variables; ideally that is not necessary.

# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.

# Used in mail/config/mozconfigs by various mozconfigs.

# Setup for build cache

# Avoid duplication if the file happens to be included twice.
if test -z "$NO_CACHE" -a -z "$SCCACHE_DISABLE"; then

# ${region} is set by m-c's build/mozconfig.cache
if test -n "$region"; then
    # set S3 bucket according to tree (level)
    case "${COMM_HEAD_REPOSITORY}" in
    *hg.mozilla.org/try-comm-central*)
	bucket=comm-central-level-1-sccache-${region}
	;;
    *hg.mozilla.org/comm-central*)
	bucket=comm-central-level-3-sccache-${region}
	;;
    esac
fi

if test -n "$bucket"; then
    mk_add_options "export SCCACHE_BUCKET=$bucket"
    mk_add_options "export SCCACHE_NAMESERVER=169.254.169.253"
    case "${SYSTEMROOT}" in
    *Windows)
        platform=win
	;;
    *)
        mk_add_options "export AWS_IAM_CREDENTIALS_URL=http://taskcluster/auth/v1/aws/s3/read-write/${bucket}/?format=iam-role-compat"
	;;
    esac

    export CCACHE="$topsrcdir/sccache2/sccache${suffix}"
    export SCCACHE_VERBOSE_STATS=1
    mk_add_options "MOZBUILD_MANAGE_SCCACHE_DAEMON=${topsrcdir}/sccache2/sccache"
    mk_add_options "UPLOAD_EXTRA_FILES+=sccache.log.gz"

    case "$platform" in
    win)
        # sccache supports a special flag to create depfiles.
        #TODO: bug 1318370 - move this all into toolchain.configure
        export _DEPEND_CFLAGS='-deps$(MDDEPDIR)/$(@F).pp'
        # Windows builds have a default wrapper that needs to be overridden
        mk_add_options "export CC_WRAPPER="
        mk_add_options "export CXX_WRAPPER="
        # For now, sccache doesn't support separate PDBs so force debug info to be
        # in object files.
        mk_add_options "export COMPILE_PDB_FLAG="
        mk_add_options "export HOST_PDB_FLAG="
        mk_add_options "export MOZ_DEBUG_FLAGS=-Z7"
        ;;
    esac
fi

fi # NO_CACHE && SCCACHE_DISABLE