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 # Defines
  18
  19 ifdef MACH
  20 ifndef NO_BUILDSTATUS_MESSAGES
  21 define BUILDSTATUS
  22 @echo 'BUILDSTATUS $1'
  23
  24 endef
  25 endif
  26 endif
  27
  28
  29 CWD := $(CURDIR)
  30
  31 ifeq "$(CWD)" "/"
  32 CWD   := /.
  33 endif
  34
  35 PYTHON3 ?= python3
  36
  37 ####################################
  38 # Load mozconfig Options
  39
  40 include $(OBJDIR)/.mozconfig-client-mk
  41
  42 ifdef MOZ_PARALLEL_BUILD
  43   MOZ_MAKE_FLAGS := $(filter-out -j%,$(MOZ_MAKE_FLAGS))
  44   MOZ_MAKE_FLAGS += -j$(MOZ_PARALLEL_BUILD)
  45 endif
  46
  47 # Automatically add -jN to make flags if not defined. N defaults to number of cores.
  48 ifeq (,$(findstring -j,$(MOZ_MAKE_FLAGS)))
  49   cores=$(shell $(PYTHON3) -c 'import multiprocessing; print(multiprocessing.cpu_count())')
  50   MOZ_MAKE_FLAGS += -j$(cores)
  51 endif
  52
  53 ifdef MOZ_AUTOMATION
  54 ifeq (4.0,$(firstword $(sort 4.0 $(MAKE_VERSION))))
  55 MOZ_MAKE_FLAGS += --output-sync=line
  56 endif
  57 endif
  58
  59 MOZ_MAKE = $(MAKE) $(MOZ_MAKE_FLAGS) -C $(OBJDIR)
  60
  61 #######################################################################
  62 # Rules
  63
  64 # The default rule is build
  65 build::
  66
  67 ifndef MACH
  68 $(error client.mk must be used via `mach`. Try running \
  69 `./mach $(firstword $(MAKECMDGOALS) $(.DEFAULT_GOAL))`)
  70 endif
  71
  72 # In automation, manage an sccache daemon. The starting of the server
  73 # needs to be in a make file so sccache inherits the jobserver.
  74 ifdef MOZBUILD_MANAGE_SCCACHE_DAEMON
  75 build::
  76         # Terminate any sccache server that might still be around.
  77         -$(MOZBUILD_MANAGE_SCCACHE_DAEMON) --stop-server > /dev/null 2>&1
  78         # Start a new server, ensuring it gets the jobserver file descriptors
  79         # from make (but don't use the + prefix when make -n is used, so that
  80         # the command doesn't run in that case)
  81         mkdir -p $(UPLOAD_PATH)
  82         $(if $(findstring n,$(filter-out --%, $(MAKEFLAGS))),,+)env SCCACHE_LOG=sccache=debug SCCACHE_ERROR_LOG=$(UPLOAD_PATH)/sccache.log $(MOZBUILD_MANAGE_SCCACHE_DAEMON) --start-server
  83 endif
  84
  85 ####################################
  86 # Build it
  87
  88 build::
  89         +$(MOZ_MAKE)
  90
  91 ifdef MOZ_AUTOMATION
  92 build::
  93         +$(MOZ_MAKE) automation/build
  94 endif
  95
  96 # This makefile doesn't support parallel execution. It does pass
  97 # MOZ_MAKE_FLAGS to sub-make processes, so they will correctly execute
  98 # in parallel.
  99 .NOTPARALLEL:
 100
 101 .PHONY: \
 102     build