gecko-dev/build/sccache.mk

# 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/.

ifdef OBJDIR
BASE_DIR = $(OBJDIR)
else
# OSX Universal builds only do upload in the first MOZ_BUILD_PROJECTS
BASE_DIR = $(MOZ_OBJDIR)/$(firstword $(MOZ_BUILD_PROJECTS))
endif

preflight_all:
	# Terminate any sccache server that might still be around
	-$(TOPSRCDIR)/sccache2/sccache --stop-server > /dev/null 2>&1
	# Start a new server, ensuring it gets the jobserver file descriptors
	# from make (but don't use the + prefix when make -n is used, so that
	# the command doesn't run in that case)
	$(if $(findstring n,$(filter-out --%, $(MAKEFLAGS))),,+)env RUST_LOG=sccache::compiler=debug SCCACHE_ERROR_LOG=$(OBJDIR)/dist/sccache.log $(TOPSRCDIR)/sccache2/sccache --start-server

postflight_all:
	# Terminate sccache server. This prints sccache stats.
	-$(TOPSRCDIR)/sccache2/sccache --stop-server
Bug 1005495 - Move sccache stats out of the build log. r=mshal 2014-05-07 06:50:09 +04:00			`# 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/.`

			`ifdef OBJDIR`
			`BASE_DIR = $(OBJDIR)`
			`else`
			`# OSX Universal builds only do upload in the first MOZ_BUILD_PROJECTS`
			`BASE_DIR = $(MOZ_OBJDIR)/$(firstword $(MOZ_BUILD_PROJECTS))`
			`endif`

			`preflight_all:`
Bug 989147 - Use new sccache for Linux and Android builds. r=gps 2014-03-28 13:41:06 +04:00			`# Terminate any sccache server that might still be around`
bug 1286934 - Switch to using sccache2. r=gps This patch does a few things: 1) Change all the in-tree tooltool manifests to contain sccache2 instead of the existing Python sccache 2) Change mozconfig.cache to point at sccache. 3) Lightly tweak the --with-cccache configure option to support sccache, and detect whether we're using ccache or sccache and set an option appropriately. 4) Add a MOZ_SCCACHE_VERBOSE_STATS option, and add a target in the top-level Makefile to make sccache spit out its stats at the end of the build. This is useful to see the cache hits/errors until we get something better. 5) Add MOZ_USING_SCCACHE to the build telemetry. Not that I think it will be immediately useful, but for future use. MozReview-Commit-ID: 9lrdLwNj5Bm --HG-- extra : rebase_source : d323457df10d0ee0ac5811940e518d9422a7e070 2016-08-26 01:39:57 +03:00			`-$(TOPSRCDIR)/sccache2/sccache --stop-server > /dev/null 2>&1`
Bug 1367940 - Ensure sccache inherits the make jobserver file descriptors. r=gps Rustc 1.20 gained support for make jobserver. But when rustc is invoked through sccache, sccache needs to have inherited the make jobserver file descriptor to pass it down to rustc. But what will be running sccache first during the build is not really deterministic. It might as well end up being a script invoking the preprocessor that ends up doing it. And we can't add the necessary + prefix to all commands that potentially can end up invoking sccache. So we manually start the sccache server at the beginning of the build, through preflight. Note this works on automation, but not for local builds, but few people are using sccache locally for rust (yet). Let's figure that out in a followup. --HG-- extra : rebase_source : eda5853d7247be247a1bec1a5d7e84b3846fd2c1 2017-07-13 14:10:23 +03:00			`# Start a new server, ensuring it gets the jobserver file descriptors`
			`# from make (but don't use the + prefix when make -n is used, so that`
			`# the command doesn't run in that case)`
Bug 1380964 - Get and upload useful sccache logs. r=gps When investigating why a particular build got a particularly high number of cache misses, it is useful to know exactly what had cache misses, and you can't get the missing information after the fact. We used to have some stats stored in a log file uploaded as artifact with the old python sccache per bug 1005495 (and before that inline in the build log), and we actually still have remains of that in the form of a EXTRA_UPLOAD_FILES in build/mozconfig.cache. Let's reuse that, and get some useful logs from sccache. Ideally sccache would give better logs, but those are sufficient for now. We'll figure things out eventually. https://github.com/mozilla/sccache/issues/151 --HG-- extra : rebase_source : a2e7093697a5b720ab28f155560211d6c0a4347e 2017-07-14 03:46:38 +03:00			`$(if $(findstring n,$(filter-out --%, $(MAKEFLAGS))),,+)env RUST_LOG=sccache::compiler=debug SCCACHE_ERROR_LOG=$(OBJDIR)/dist/sccache.log $(TOPSRCDIR)/sccache2/sccache --start-server`
Bug 989147 - Use new sccache for Linux and Android builds. r=gps 2014-03-28 13:41:06 +04:00
Bug 1005495 - Move sccache stats out of the build log. r=mshal 2014-05-07 06:50:09 +04:00			`postflight_all:`
Bug 989147 - Use new sccache for Linux and Android builds. r=gps 2014-03-28 13:41:06 +04:00			`# Terminate sccache server. This prints sccache stats.`
bug 1286934 - Switch to using sccache2. r=gps This patch does a few things: 1) Change all the in-tree tooltool manifests to contain sccache2 instead of the existing Python sccache 2) Change mozconfig.cache to point at sccache. 3) Lightly tweak the --with-cccache configure option to support sccache, and detect whether we're using ccache or sccache and set an option appropriately. 4) Add a MOZ_SCCACHE_VERBOSE_STATS option, and add a target in the top-level Makefile to make sccache spit out its stats at the end of the build. This is useful to see the cache hits/errors until we get something better. 5) Add MOZ_USING_SCCACHE to the build telemetry. Not that I think it will be immediately useful, but for future use. MozReview-Commit-ID: 9lrdLwNj5Bm --HG-- extra : rebase_source : d323457df10d0ee0ac5811940e518d9422a7e070 2016-08-26 01:39:57 +03:00			`-$(TOPSRCDIR)/sccache2/sccache --stop-server`