build/mozconfig.cache
author Gregory Szorc <gps@mozilla.com>
Thu, 09 Nov 2017 13:55:05 -0800
changeset 695818 764f560625377ed30ed8442649a251f7691dc655
parent 694271 fb5b3dbdaf6799c8ba321f3993ed19049430676e
permissions -rw-r--r--
Bug 1415971 - Inline sccache.mk into client.mk; r?build sccache.mk is the only thing that uses MOZ_PREFLIGHT_ALL and MOZ_POSTFLIGHT_ALL. We're trying to kill client.mk and these variables are next on the chopping block. This commit essentially moves the logic of sccache.mk inline into client.mk. Initially, I wanted to move the management of the sccache daemon to Python as part of what `mach build` invokes. However, the sccache daemon needs access to the make jobserver. Since we don't have an active make process in `mach`, this is obviously problematic. The sccache daemon is also used by configure, which is launched from client.mk. So the best we can do right now is move the sccache daemon logic into client.mk. As part of the port, we pass the path to the sccache binary via an environment variable. This feels slightly better than hardcoding the path that automation uses. MozReview-Commit-ID: zcOYR4I1OG

# 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/.

# Setup for build cache

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

# buildbot (or builders that use buildprops.json):
if [ -f $topsrcdir/../buildprops.json ]; then
read branch platform master <<EOF
$(python2.7 -c 'import json; p = json.loads(open("'"$topsrcdir"'/../buildprops.json").read())["properties"]; print p["branch"], p["platform"], p["master"]' 2> /dev/null)
EOF

bucket=
if test -z "$SCCACHE_DISABLE"; then
    case "${branch}" in
    try)
        case "${master}" in
        *scl1.mozilla.com*|*.scl3.mozilla.com*)
            bucket=mozilla-releng-s3-cache-us-west-1-try
            ;;
        *use1.mozilla.com*)
            bucket=mozilla-releng-s3-cache-us-east-1-try
            ;;
        *usw2.mozilla.com*)
            bucket=mozilla-releng-s3-cache-us-west-2-try
            ;;
        esac
        ;;
    autoland|mozilla-inbound)
        case "${master}" in
        *use1.mozilla.com*)
            bucket=mozilla-releng-s3-cache-us-east-1-prod
            ;;
        *usw2.mozilla.com*)
            bucket=mozilla-releng-s3-cache-us-west-2-prod
            ;;
        esac
        ;;
    esac
fi
fi

# builds where buildprops didn't have the data (eg: taskcluster or non-buildbot) and without sccache disabled:
if test -z "$bucket" -a -z "$SCCACHE_DISABLE"; then

    # prevent rerun if az is set, or wget is not available
    if test -z "$availability_zone" -a -x "$(command -v wget)"; then
        if test -n "${TASKCLUSTER_WORKER_GROUP}"; then
            # TASKCLUSTER_WORKER_GROUP is just the region now, so
            # stick an extra character on to make the already-convoluted logic
            # here simpler.
            availability_zone="${TASKCLUSTER_WORKER_GROUP}x"
        else
            # timeout after 1 second, and don't retry (failure indicates instance is not in ec2 or network issue)
            # availability_zone is of the form <region><letter> where region is e.g. us-west-2, and az is us-west-2a
            availability_zone=$(wget -T 1 -t 1 -q -O - http://169.254.169.254/latest/meta-data/placement/availability-zone || true)
        fi
        if test -z "$availability_zone" -o "$availability_zone" = "not-ec2"; then
            availability_zone=not-ec2
        else
            # region is az with last letter trimmed
            region=${availability_zone%?}
            # set S3 bucket according to tree (level)
            case "${GECKO_HEAD_REPOSITORY}" in
            *hg.mozilla.org/try*)
                bucket=taskcluster-level-1-sccache-${region}
                ;;
            *hg.mozilla.org/integration/autoland*|*hg.mozilla.org/integration/mozilla-inbound*)
                bucket=taskcluster-level-3-sccache-${region}
                ;;
            esac

            # set a dummy master
            case "${region}" in
            eu-central-1)
                master=dummy.euc1.mozilla.com
                ;;
            us-east-1)
                master=dummy.use1.mozilla.com
                ;;
            us-west-1)
                master=dummy.usw1.mozilla.com
                ;;
            us-west-2)
                master=dummy.usw2.mozilla.com
                ;;
            esac
        fi
    fi
fi

# if platform hasn't been determined from buildprops, and we're on windows,
# it must be set to prevent adding ac_add_options --with-ccache below
if test -z "$platform"; then
    # set platform based on the SYSTEMROOT env var
    case "${SYSTEMROOT}" in
    *Windows)
        platform=windows
        suffix=.exe
        ;;
    esac
fi

if test -z "$bucket"; then
    case "$platform" in
    win*) : ;;
    *)
        export CCACHE=ccache
    esac
else
    mk_add_options "export SCCACHE_BUCKET=$bucket"
    case "$master" in
    *us[ew][12].mozilla.com*|*euc1.mozilla.com*)
        mk_add_options "export SCCACHE_NAMESERVER=169.254.169.253"
        ;;
    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