client.mk

   1 # -*- makefile -*-
   2 # vim:set ts=8 sw=8 sts=8 noet:
   3 # This Source Code Form is subject to the terms of the Mozilla Public
   4 # License, v. 2.0. If a copy of the MPL was not distributed with this
   5 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
   6
   7 # Defines main targets for driving the Firefox build system.
   8 #
   9 # This make file should not be invoked directly. Instead, use
  10 # `mach` (likely `mach build`) for invoking the build system.
  11 #
  12 # Options:
  13 #   MOZ_OBJDIR           - Destination object directory
  14 #   MOZ_MAKE_FLAGS       - Flags to pass to $(MAKE)
  15 #
  16 #######################################################################
  17
  18 ifndef MACH
  19 $(error client.mk must be used via `mach`. Try running \
  20 `./mach $(firstword $(MAKECMDGOALS) $(.DEFAULT_GOAL))`)
  21 endif
  22
  23 ### Load mozconfig options
  24 include $(OBJDIR)/.mozconfig-client-mk
  25
  26 ### Set up make flags
  27 ifdef MOZ_AUTOMATION
  28 ifeq (4.0,$(firstword $(sort 4.0 $(MAKE_VERSION))))
  29 MOZ_MAKE_FLAGS += --output-sync=line
  30 endif
  31 endif
  32
  33 MOZ_MAKE = $(MAKE) $(MOZ_MAKE_FLAGS) -C $(OBJDIR)
  34
  35 ### Rules
  36 # The default rule is build
  37 build::
  38
  39 # In automation, manage an sccache daemon. The starting of the server
  40 # needs to be in a make file so sccache inherits the jobserver.
  41 ifdef MOZBUILD_MANAGE_SCCACHE_DAEMON
  42 SCCACHE_STOP = $(MOZBUILD_MANAGE_SCCACHE_DAEMON) --stop-server
  43
  44 # When a command fails, make is going to abort, but we need to terminate the
  45 # sccache server, otherwise it will prevent make itself from terminating
  46 # because it would still be running and holding a jobserver token.
  47 # However, we also need to preserve the command's exit code, thus the
  48 # gymnastics.
  49 SCCACHE_STOP_ON_FAILURE = || (x=$$?; $(SCCACHE_STOP) || true; exit $$x)
  50
  51 build::
  52         # Terminate any sccache server that might still be around.
  53         -$(SCCACHE_STOP) > /dev/null 2>&1
  54         # Start a new server, ensuring it gets the jobserver file descriptors
  55         # from make (but don't use the + prefix when make -n is used, so that
  56         # the command doesn't run in that case)
  57         mkdir -p $(UPLOAD_PATH)
  58         $(if $(findstring n,$(filter-out --%, $(MAKEFLAGS))),,+)env SCCACHE_LOG=sccache=debug SCCACHE_ERROR_LOG=$(UPLOAD_PATH)/sccache.log $(MOZBUILD_MANAGE_SCCACHE_DAEMON) --start-server
  59 endif
  60
  61 ### Build it
  62 build::
  63         +$(MOZ_MAKE) $(SCCACHE_STOP_ON_FAILURE)
  64 ifdef MOZ_AUTOMATION
  65         +$(MOZ_MAKE) automation/build $(SCCACHE_STOP_ON_FAILURE)
  66 endif
  67
  68 ifdef MOZBUILD_MANAGE_SCCACHE_DAEMON
  69 build::
  70         # Terminate sccache server. This prints sccache stats.
  71         -$(SCCACHE_STOP)
  72 endif
  73
  74 .PHONY: \
  75     build