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make.py
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make.py
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# Copyright (c) 2013 Google Inc. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
# Notes:
#
# This is all roughly based on the Makefile system used by the Linux
# kernel, but is a non-recursive make -- we put the entire dependency
# graph in front of make and let it figure it out.
#
# The code below generates a separate .mk file for each target, but
# all are sourced by the top-level Makefile. This means that all
# variables in .mk-files clobber one another. Be careful to use :=
# where appropriate for immediate evaluation, and similarly to watch
# that you're not relying on a variable value to last beween different
# .mk files.
#
# TODOs:
#
# Global settings and utility functions are currently stuffed in the
# toplevel Makefile. It may make sense to generate some .mk files on
# the side to keep the the files readable.
import os
import re
import sys
import subprocess
import gyp
import gyp.common
import gyp.xcode_emulation
from gyp.common import GetEnvironFallback
from gyp.common import GypError
import hashlib
generator_default_variables = {
'EXECUTABLE_PREFIX': '',
'EXECUTABLE_SUFFIX': '',
'STATIC_LIB_PREFIX': 'lib',
'SHARED_LIB_PREFIX': 'lib',
'STATIC_LIB_SUFFIX': '.a',
'INTERMEDIATE_DIR': '$(obj).$(TOOLSET)/$(TARGET)/geni',
'SHARED_INTERMEDIATE_DIR': '$(obj)/gen',
'PRODUCT_DIR': '$(builddir)',
'RULE_INPUT_ROOT': '%(INPUT_ROOT)s', # This gets expanded by Python.
'RULE_INPUT_DIRNAME': '%(INPUT_DIRNAME)s', # This gets expanded by Python.
'RULE_INPUT_PATH': '$(abspath $<)',
'RULE_INPUT_EXT': '$(suffix $<)',
'RULE_INPUT_NAME': '$(notdir $<)',
'CONFIGURATION_NAME': '$(BUILDTYPE)',
}
# Make supports multiple toolsets
generator_supports_multiple_toolsets = True
# Request sorted dependencies in the order from dependents to dependencies.
generator_wants_sorted_dependencies = False
# Placates pylint.
generator_additional_non_configuration_keys = []
generator_additional_path_sections = []
generator_extra_sources_for_rules = []
generator_filelist_paths = None
def CalculateVariables(default_variables, params):
"""Calculate additional variables for use in the build (called by gyp)."""
flavor = gyp.common.GetFlavor(params)
if flavor == 'mac':
default_variables.setdefault('OS', 'mac')
default_variables.setdefault('SHARED_LIB_SUFFIX', '.dylib')
default_variables.setdefault('SHARED_LIB_DIR',
generator_default_variables['PRODUCT_DIR'])
default_variables.setdefault('LIB_DIR',
generator_default_variables['PRODUCT_DIR'])
# Copy additional generator configuration data from Xcode, which is shared
# by the Mac Make generator.
import gyp.generator.xcode as xcode_generator
global generator_additional_non_configuration_keys
generator_additional_non_configuration_keys = getattr(xcode_generator,
'generator_additional_non_configuration_keys', [])
global generator_additional_path_sections
generator_additional_path_sections = getattr(xcode_generator,
'generator_additional_path_sections', [])
global generator_extra_sources_for_rules
generator_extra_sources_for_rules = getattr(xcode_generator,
'generator_extra_sources_for_rules', [])
COMPILABLE_EXTENSIONS.update({'.m': 'objc', '.mm' : 'objcxx'})
else:
operating_system = flavor
if flavor == 'android':
operating_system = 'linux' # Keep this legacy behavior for now.
default_variables.setdefault('OS', operating_system)
if flavor == 'aix':
default_variables.setdefault('SHARED_LIB_SUFFIX', '.a')
else:
default_variables.setdefault('SHARED_LIB_SUFFIX', '.so')
default_variables.setdefault('SHARED_LIB_DIR','$(builddir)/lib.$(TOOLSET)')
default_variables.setdefault('LIB_DIR', '$(obj).$(TOOLSET)')
def CalculateGeneratorInputInfo(params):
"""Calculate the generator specific info that gets fed to input (called by
gyp)."""
generator_flags = params.get('generator_flags', {})
android_ndk_version = generator_flags.get('android_ndk_version', None)
# Android NDK requires a strict link order.
if android_ndk_version:
global generator_wants_sorted_dependencies
generator_wants_sorted_dependencies = True
output_dir = params['options'].generator_output or \
params['options'].toplevel_dir
builddir_name = generator_flags.get('output_dir', 'out')
qualified_out_dir = os.path.normpath(os.path.join(
output_dir, builddir_name, 'gypfiles'))
global generator_filelist_paths
generator_filelist_paths = {
'toplevel': params['options'].toplevel_dir,
'qualified_out_dir': qualified_out_dir,
}
# The .d checking code below uses these functions:
# wildcard, sort, foreach, shell, wordlist
# wildcard can handle spaces, the rest can't.
# Since I could find no way to make foreach work with spaces in filenames
# correctly, the .d files have spaces replaced with another character. The .d
# file for
# Chromium\ Framework.framework/foo
# is for example
# out/Release/.deps/out/Release/Chromium?Framework.framework/foo
# This is the replacement character.
SPACE_REPLACEMENT = '?'
LINK_COMMANDS_LINUX = """\
quiet_cmd_alink = AR($(TOOLSET)) $@
cmd_alink = rm -f $@ && $(AR.$(TOOLSET)) crs $@ $(filter %.o,$^)
quiet_cmd_alink_thin = AR($(TOOLSET)) $@
cmd_alink_thin = rm -f $@ && $(AR.$(TOOLSET)) crsT $@ $(filter %.o,$^)
# Due to circular dependencies between libraries :(, we wrap the
# special "figure out circular dependencies" flags around the entire
# input list during linking.
quiet_cmd_link = LINK($(TOOLSET)) $@
cmd_link = $(LINK.$(TOOLSET)) $(GYP_LDFLAGS) $(LDFLAGS.$(TOOLSET)) -o $@ -Wl,--start-group $(LD_INPUTS) $(LIBS) -Wl,--end-group
# We support two kinds of shared objects (.so):
# 1) shared_library, which is just bundling together many dependent libraries
# into a link line.
# 2) loadable_module, which is generating a module intended for dlopen().
#
# They differ only slightly:
# In the former case, we want to package all dependent code into the .so.
# In the latter case, we want to package just the API exposed by the
# outermost module.
# This means shared_library uses --whole-archive, while loadable_module doesn't.
# (Note that --whole-archive is incompatible with the --start-group used in
# normal linking.)
# Other shared-object link notes:
# - Set SONAME to the library filename so our binaries don't reference
# the local, absolute paths used on the link command-line.
quiet_cmd_solink = SOLINK($(TOOLSET)) $@
cmd_solink = $(LINK.$(TOOLSET)) -shared $(GYP_LDFLAGS) $(LDFLAGS.$(TOOLSET)) -Wl,-soname=$(@F) -o $@ -Wl,--whole-archive $(LD_INPUTS) -Wl,--no-whole-archive $(LIBS)
quiet_cmd_solink_module = SOLINK_MODULE($(TOOLSET)) $@
cmd_solink_module = $(LINK.$(TOOLSET)) -shared $(GYP_LDFLAGS) $(LDFLAGS.$(TOOLSET)) -Wl,-soname=$(@F) -o $@ -Wl,--start-group $(filter-out FORCE_DO_CMD, $^) -Wl,--end-group $(LIBS)
"""
LINK_COMMANDS_MAC = """\
quiet_cmd_alink = LIBTOOL-STATIC $@
cmd_alink = rm -f $@ && ./gyp-mac-tool filter-libtool libtool $(GYP_LIBTOOLFLAGS) -static -o $@ $(filter %.o,$^)
quiet_cmd_link = LINK($(TOOLSET)) $@
cmd_link = $(LINK.$(TOOLSET)) $(GYP_LDFLAGS) $(LDFLAGS.$(TOOLSET)) -o "$@" $(LD_INPUTS) $(LIBS)
quiet_cmd_solink = SOLINK($(TOOLSET)) $@
cmd_solink = $(LINK.$(TOOLSET)) -shared $(GYP_LDFLAGS) $(LDFLAGS.$(TOOLSET)) -o "$@" $(LD_INPUTS) $(LIBS)
quiet_cmd_solink_module = SOLINK_MODULE($(TOOLSET)) $@
cmd_solink_module = $(LINK.$(TOOLSET)) -bundle $(GYP_LDFLAGS) $(LDFLAGS.$(TOOLSET)) -o $@ $(filter-out FORCE_DO_CMD, $^) $(LIBS)
"""
LINK_COMMANDS_ANDROID = """\
quiet_cmd_alink = AR($(TOOLSET)) $@
cmd_alink = rm -f $@ && $(AR.$(TOOLSET)) crs $@ $(filter %.o,$^)
quiet_cmd_alink_thin = AR($(TOOLSET)) $@
cmd_alink_thin = rm -f $@ && $(AR.$(TOOLSET)) crsT $@ $(filter %.o,$^)
# Due to circular dependencies between libraries :(, we wrap the
# special "figure out circular dependencies" flags around the entire
# input list during linking.
quiet_cmd_link = LINK($(TOOLSET)) $@
quiet_cmd_link_host = LINK($(TOOLSET)) $@
cmd_link = $(LINK.$(TOOLSET)) $(GYP_LDFLAGS) $(LDFLAGS.$(TOOLSET)) -o $@ -Wl,--start-group $(LD_INPUTS) -Wl,--end-group $(LIBS)
cmd_link_host = $(LINK.$(TOOLSET)) $(GYP_LDFLAGS) $(LDFLAGS.$(TOOLSET)) -o $@ $(LD_INPUTS) $(LIBS)
# Other shared-object link notes:
# - Set SONAME to the library filename so our binaries don't reference
# the local, absolute paths used on the link command-line.
quiet_cmd_solink = SOLINK($(TOOLSET)) $@
cmd_solink = $(LINK.$(TOOLSET)) -shared $(GYP_LDFLAGS) $(LDFLAGS.$(TOOLSET)) -Wl,-soname=$(@F) -o $@ -Wl,--whole-archive $(LD_INPUTS) -Wl,--no-whole-archive $(LIBS)
quiet_cmd_solink_module = SOLINK_MODULE($(TOOLSET)) $@
cmd_solink_module = $(LINK.$(TOOLSET)) -shared $(GYP_LDFLAGS) $(LDFLAGS.$(TOOLSET)) -Wl,-soname=$(@F) -o $@ -Wl,--start-group $(filter-out FORCE_DO_CMD, $^) -Wl,--end-group $(LIBS)
quiet_cmd_solink_module_host = SOLINK_MODULE($(TOOLSET)) $@
cmd_solink_module_host = $(LINK.$(TOOLSET)) -shared $(GYP_LDFLAGS) $(LDFLAGS.$(TOOLSET)) -Wl,-soname=$(@F) -o $@ $(filter-out FORCE_DO_CMD, $^) $(LIBS)
"""
LINK_COMMANDS_AIX = """\
quiet_cmd_alink = AR($(TOOLSET)) $@
cmd_alink = rm -f $@ && $(AR.$(TOOLSET)) -X32_64 crs $@ $(filter %.o,$^)
quiet_cmd_alink_thin = AR($(TOOLSET)) $@
cmd_alink_thin = rm -f $@ && $(AR.$(TOOLSET)) -X32_64 crs $@ $(filter %.o,$^)
quiet_cmd_link = LINK($(TOOLSET)) $@
cmd_link = $(LINK.$(TOOLSET)) $(GYP_LDFLAGS) $(LDFLAGS.$(TOOLSET)) -o $@ $(LD_INPUTS) $(LIBS)
quiet_cmd_solink = SOLINK($(TOOLSET)) $@
cmd_solink = $(LINK.$(TOOLSET)) -shared $(GYP_LDFLAGS) $(LDFLAGS.$(TOOLSET)) -o $@ $(LD_INPUTS) $(LIBS)
quiet_cmd_solink_module = SOLINK_MODULE($(TOOLSET)) $@
cmd_solink_module = $(LINK.$(TOOLSET)) -shared $(GYP_LDFLAGS) $(LDFLAGS.$(TOOLSET)) -o $@ $(filter-out FORCE_DO_CMD, $^) $(LIBS)
"""
# Header of toplevel Makefile.
# This should go into the build tree, but it's easier to keep it here for now.
SHARED_HEADER = ("""\
# We borrow heavily from the kernel build setup, though we are simpler since
# we don't have Kconfig tweaking settings on us.
# The implicit make rules have it looking for RCS files, among other things.
# We instead explicitly write all the rules we care about.
# It's even quicker (saves ~200ms) to pass -r on the command line.
MAKEFLAGS=-r
# The source directory tree.
srcdir := %(srcdir)s
abs_srcdir := $(abspath $(srcdir))
# The name of the builddir.
builddir_name ?= %(builddir)s
# The V=1 flag on command line makes us verbosely print command lines.
ifdef V
quiet=
else
quiet=quiet_
endif
# Specify BUILDTYPE=Release on the command line for a release build.
BUILDTYPE ?= %(default_configuration)s
# Directory all our build output goes into.
# Note that this must be two directories beneath src/ for unit tests to pass,
# as they reach into the src/ directory for data with relative paths.
builddir ?= $(builddir_name)/$(BUILDTYPE)
abs_builddir := $(abspath $(builddir))
depsdir := $(builddir)/.deps
# Object output directory.
obj := $(builddir)/obj
abs_obj := $(abspath $(obj))
# We build up a list of every single one of the targets so we can slurp in the
# generated dependency rule Makefiles in one pass.
all_deps :=
%(make_global_settings)s
CC.target ?= %(CC.target)s
CFLAGS.target ?= $(CPPFLAGS) $(CFLAGS)
CXX.target ?= %(CXX.target)s
CXXFLAGS.target ?= $(CPPFLAGS) $(CXXFLAGS)
LINK.target ?= %(LINK.target)s
LDFLAGS.target ?= $(LDFLAGS)
AR.target ?= $(AR)
# C++ apps need to be linked with g++.
LINK ?= $(CXX.target)
# TODO(evan): move all cross-compilation logic to gyp-time so we don't need
# to replicate this environment fallback in make as well.
CC.host ?= %(CC.host)s
CFLAGS.host ?= $(CPPFLAGS_host) $(CFLAGS_host)
CXX.host ?= %(CXX.host)s
CXXFLAGS.host ?= $(CPPFLAGS_host) $(CXXFLAGS_host)
LINK.host ?= %(LINK.host)s
LDFLAGS.host ?=
AR.host ?= %(AR.host)s
# Define a dir function that can handle spaces.
# http://www.gnu.org/software/make/manual/make.html#Syntax-of-Functions
# "leading spaces cannot appear in the text of the first argument as written.
# These characters can be put into the argument value by variable substitution."
empty :=
space := $(empty) $(empty)
# http://stackoverflow.com/questions/1189781/using-make-dir-or-notdir-on-a-path-with-spaces
replace_spaces = $(subst $(space),""" + SPACE_REPLACEMENT + """,$1)
unreplace_spaces = $(subst """ + SPACE_REPLACEMENT + """,$(space),$1)
dirx = $(call unreplace_spaces,$(dir $(call replace_spaces,$1)))
# Flags to make gcc output dependency info. Note that you need to be
# careful here to use the flags that ccache and distcc can understand.
# We write to a dep file on the side first and then rename at the end
# so we can't end up with a broken dep file.
depfile = $(depsdir)/$(call replace_spaces,$@).d
DEPFLAGS = -MMD -MF $(depfile).raw
# We have to fixup the deps output in a few ways.
# (1) the file output should mention the proper .o file.
# ccache or distcc lose the path to the target, so we convert a rule of
# the form:
# foobar.o: DEP1 DEP2
# into
# path/to/foobar.o: DEP1 DEP2
# (2) we want missing files not to cause us to fail to build.
# We want to rewrite
# foobar.o: DEP1 DEP2 \\
# DEP3
# to
# DEP1:
# DEP2:
# DEP3:
# so if the files are missing, they're just considered phony rules.
# We have to do some pretty insane escaping to get those backslashes
# and dollar signs past make, the shell, and sed at the same time.
# Doesn't work with spaces, but that's fine: .d files have spaces in
# their names replaced with other characters."""
r"""
define fixup_dep
# The depfile may not exist if the input file didn't have any #includes.
touch $(depfile).raw
# Fixup path as in (1).
sed -e "s|^$(notdir $@)|$@|" $(depfile).raw >> $(depfile)
# Add extra rules as in (2).
# We remove slashes and replace spaces with new lines;
# remove blank lines;
# delete the first line and append a colon to the remaining lines.
sed -e 's|\\||' -e 'y| |\n|' $(depfile).raw |\
grep -v '^$$' |\
sed -e 1d -e 's|$$|:|' \
>> $(depfile)
rm $(depfile).raw
endef
"""
"""
# Command definitions:
# - cmd_foo is the actual command to run;
# - quiet_cmd_foo is the brief-output summary of the command.
quiet_cmd_cc = CC($(TOOLSET)) $@
cmd_cc = $(CC.$(TOOLSET)) $(GYP_CFLAGS) $(DEPFLAGS) $(CFLAGS.$(TOOLSET)) -c -o $@ $<
quiet_cmd_cxx = CXX($(TOOLSET)) $@
cmd_cxx = $(CXX.$(TOOLSET)) $(GYP_CXXFLAGS) $(DEPFLAGS) $(CXXFLAGS.$(TOOLSET)) -c -o $@ $<
%(extra_commands)s
quiet_cmd_touch = TOUCH $@
cmd_touch = touch $@
quiet_cmd_copy = COPY $@
# send stderr to /dev/null to ignore messages when linking directories.
cmd_copy = ln -f "$<" "$@" 2>/dev/null || (rm -rf "$@" && cp %(copy_archive_args)s "$<" "$@")
%(link_commands)s
"""
r"""
# Define an escape_quotes function to escape single quotes.
# This allows us to handle quotes properly as long as we always use
# use single quotes and escape_quotes.
escape_quotes = $(subst ','\'',$(1))
# This comment is here just to include a ' to unconfuse syntax highlighting.
# Define an escape_vars function to escape '$' variable syntax.
# This allows us to read/write command lines with shell variables (e.g.
# $LD_LIBRARY_PATH), without triggering make substitution.
escape_vars = $(subst $$,$$$$,$(1))
# Helper that expands to a shell command to echo a string exactly as it is in
# make. This uses printf instead of echo because printf's behaviour with respect
# to escape sequences is more portable than echo's across different shells
# (e.g., dash, bash).
exact_echo = printf '%%s\n' '$(call escape_quotes,$(1))'
"""
"""
# Helper to compare the command we're about to run against the command
# we logged the last time we ran the command. Produces an empty
# string (false) when the commands match.
# Tricky point: Make has no string-equality test function.
# The kernel uses the following, but it seems like it would have false
# positives, where one string reordered its arguments.
# arg_check = $(strip $(filter-out $(cmd_$(1)), $(cmd_$@)) \\
# $(filter-out $(cmd_$@), $(cmd_$(1))))
# We instead substitute each for the empty string into the other, and
# say they're equal if both substitutions produce the empty string.
# .d files contain """ + SPACE_REPLACEMENT + \
""" instead of spaces, take that into account.
command_changed = $(or $(subst $(cmd_$(1)),,$(cmd_$(call replace_spaces,$@))),\\
$(subst $(cmd_$(call replace_spaces,$@)),,$(cmd_$(1))))
# Helper that is non-empty when a prerequisite changes.
# Normally make does this implicitly, but we force rules to always run
# so we can check their command lines.
# $? -- new prerequisites
# $| -- order-only dependencies
prereq_changed = $(filter-out FORCE_DO_CMD,$(filter-out $|,$?))
# Helper that executes all postbuilds until one fails.
define do_postbuilds
@E=0;\\
for p in $(POSTBUILDS); do\\
eval $$p;\\
E=$$?;\\
if [ $$E -ne 0 ]; then\\
break;\\
fi;\\
done;\\
if [ $$E -ne 0 ]; then\\
rm -rf "$@";\\
exit $$E;\\
fi
endef
# do_cmd: run a command via the above cmd_foo names, if necessary.
# Should always run for a given target to handle command-line changes.
# Second argument, if non-zero, makes it do asm/C/C++ dependency munging.
# Third argument, if non-zero, makes it do POSTBUILDS processing.
# Note: We intentionally do NOT call dirx for depfile, since it contains """ + \
SPACE_REPLACEMENT + """ for
# spaces already and dirx strips the """ + SPACE_REPLACEMENT + \
""" characters.
define do_cmd
$(if $(or $(command_changed),$(prereq_changed)),
@$(call exact_echo, $($(quiet)cmd_$(1)))
@mkdir -p "$(call dirx,$@)" "$(dir $(depfile))"
$(if $(findstring flock,$(word %(flock_index)d,$(cmd_$1))),
@$(cmd_$(1))
@echo " $(quiet_cmd_$(1)): Finished",
@$(cmd_$(1))
)
@$(call exact_echo,$(call escape_vars,cmd_$(call replace_spaces,$@) := $(cmd_$(1)))) > $(depfile)
@$(if $(2),$(fixup_dep))
$(if $(and $(3), $(POSTBUILDS)),
$(call do_postbuilds)
)
)
endef
# Declare the "%(default_target)s" target first so it is the default,
# even though we don't have the deps yet.
.PHONY: %(default_target)s
%(default_target)s:
# make looks for ways to re-generate included makefiles, but in our case, we
# don't have a direct way. Explicitly telling make that it has nothing to do
# for them makes it go faster.
%%.d: ;
# Use FORCE_DO_CMD to force a target to run. Should be coupled with
# do_cmd.
.PHONY: FORCE_DO_CMD
FORCE_DO_CMD:
""")
SHARED_HEADER_MAC_COMMANDS = """
quiet_cmd_objc = CXX($(TOOLSET)) $@
cmd_objc = $(CC.$(TOOLSET)) $(GYP_OBJCFLAGS) $(DEPFLAGS) -c -o $@ $<
quiet_cmd_objcxx = CXX($(TOOLSET)) $@
cmd_objcxx = $(CXX.$(TOOLSET)) $(GYP_OBJCXXFLAGS) $(DEPFLAGS) -c -o $@ $<
# Commands for precompiled header files.
quiet_cmd_pch_c = CXX($(TOOLSET)) $@
cmd_pch_c = $(CC.$(TOOLSET)) $(GYP_PCH_CFLAGS) $(DEPFLAGS) $(CXXFLAGS.$(TOOLSET)) -c -o $@ $<
quiet_cmd_pch_cc = CXX($(TOOLSET)) $@
cmd_pch_cc = $(CC.$(TOOLSET)) $(GYP_PCH_CXXFLAGS) $(DEPFLAGS) $(CXXFLAGS.$(TOOLSET)) -c -o $@ $<
quiet_cmd_pch_m = CXX($(TOOLSET)) $@
cmd_pch_m = $(CC.$(TOOLSET)) $(GYP_PCH_OBJCFLAGS) $(DEPFLAGS) -c -o $@ $<
quiet_cmd_pch_mm = CXX($(TOOLSET)) $@
cmd_pch_mm = $(CC.$(TOOLSET)) $(GYP_PCH_OBJCXXFLAGS) $(DEPFLAGS) -c -o $@ $<
# gyp-mac-tool is written next to the root Makefile by gyp.
# Use $(4) for the command, since $(2) and $(3) are used as flag by do_cmd
# already.
quiet_cmd_mac_tool = MACTOOL $(4) $<
cmd_mac_tool = ./gyp-mac-tool $(4) $< "$@"
quiet_cmd_mac_package_framework = PACKAGE FRAMEWORK $@
cmd_mac_package_framework = ./gyp-mac-tool package-framework "$@" $(4)
quiet_cmd_infoplist = INFOPLIST $@
cmd_infoplist = $(CC.$(TOOLSET)) -E -P -Wno-trigraphs -x c $(INFOPLIST_DEFINES) "$<" -o "$@"
"""
def WriteRootHeaderSuffixRules(writer):
extensions = sorted(COMPILABLE_EXTENSIONS.keys(), key=str.lower)
writer.write('# Suffix rules, putting all outputs into $(obj).\n')
for ext in extensions:
writer.write('$(obj).$(TOOLSET)/%%.o: $(srcdir)/%%%s FORCE_DO_CMD\n' % ext)
writer.write('\t@$(call do_cmd,%s,1)\n' % COMPILABLE_EXTENSIONS[ext])
writer.write('\n# Try building from generated source, too.\n')
for ext in extensions:
writer.write(
'$(obj).$(TOOLSET)/%%.o: $(obj).$(TOOLSET)/%%%s FORCE_DO_CMD\n' % ext)
writer.write('\t@$(call do_cmd,%s,1)\n' % COMPILABLE_EXTENSIONS[ext])
writer.write('\n')
for ext in extensions:
writer.write('$(obj).$(TOOLSET)/%%.o: $(obj)/%%%s FORCE_DO_CMD\n' % ext)
writer.write('\t@$(call do_cmd,%s,1)\n' % COMPILABLE_EXTENSIONS[ext])
writer.write('\n')
SHARED_HEADER_SUFFIX_RULES_COMMENT1 = ("""\
# Suffix rules, putting all outputs into $(obj).
""")
SHARED_HEADER_SUFFIX_RULES_COMMENT2 = ("""\
# Try building from generated source, too.
""")
SHARED_FOOTER = """\
# "all" is a concatenation of the "all" targets from all the included
# sub-makefiles. This is just here to clarify.
all:
# Add in dependency-tracking rules. $(all_deps) is the list of every single
# target in our tree. Only consider the ones with .d (dependency) info:
d_files := $(wildcard $(foreach f,$(all_deps),$(depsdir)/$(f).d))
ifneq ($(d_files),)
include $(d_files)
endif
"""
header = """\
# This file is generated by gyp; do not edit.
"""
# Maps every compilable file extension to the do_cmd that compiles it.
COMPILABLE_EXTENSIONS = {
'.c': 'cc',
'.cc': 'cxx',
'.cpp': 'cxx',
'.cxx': 'cxx',
'.s': 'cc',
'.S': 'cc',
}
def Compilable(filename):
"""Return true if the file is compilable (should be in OBJS)."""
for res in (filename.endswith(e) for e in COMPILABLE_EXTENSIONS):
if res:
return True
return False
def Linkable(filename):
"""Return true if the file is linkable (should be on the link line)."""
return filename.endswith('.o')
def Target(filename):
"""Translate a compilable filename to its .o target."""
return os.path.splitext(filename)[0] + '.o'
def EscapeShellArgument(s):
"""Quotes an argument so that it will be interpreted literally by a POSIX
shell. Taken from
http://stackoverflow.com/questions/35817/whats-the-best-way-to-escape-ossystem-calls-in-python
"""
return "'" + s.replace("'", "'\\''") + "'"
def EscapeMakeVariableExpansion(s):
"""Make has its own variable expansion syntax using $. We must escape it for
string to be interpreted literally."""
return s.replace('$', '$$')
def EscapeCppDefine(s):
"""Escapes a CPP define so that it will reach the compiler unaltered."""
s = EscapeShellArgument(s)
s = EscapeMakeVariableExpansion(s)
# '#' characters must be escaped even embedded in a string, else Make will
# treat it as the start of a comment.
return s.replace('#', r'\#')
def QuoteIfNecessary(string):
"""TODO: Should this ideally be replaced with one or more of the above
functions?"""
if '"' in string:
string = '"' + string.replace('"', '\\"') + '"'
return string
def StringToMakefileVariable(string):
"""Convert a string to a value that is acceptable as a make variable name."""
return re.sub('[^a-zA-Z0-9_]', '_', string)
srcdir_prefix = ''
def Sourceify(path):
"""Convert a path to its source directory form."""
if '$(' in path:
return path
if os.path.isabs(path):
return path
return srcdir_prefix + path
def QuoteSpaces(s, quote=r'\ '):
return s.replace(' ', quote)
# TODO: Avoid code duplication with _ValidateSourcesForMSVSProject in msvs.py.
def _ValidateSourcesForOSX(spec, all_sources):
"""Makes sure if duplicate basenames are not specified in the source list.
Arguments:
spec: The target dictionary containing the properties of the target.
"""
if spec.get('type', None) != 'static_library':
return
basenames = {}
for source in all_sources:
name, ext = os.path.splitext(source)
is_compiled_file = ext in [
'.c', '.cc', '.cpp', '.cxx', '.m', '.mm', '.s', '.S']
if not is_compiled_file:
continue
basename = os.path.basename(name) # Don't include extension.
basenames.setdefault(basename, []).append(source)
error = ''
for basename, files in basenames.iteritems():
if len(files) > 1:
error += ' %s: %s\n' % (basename, ' '.join(files))
if error:
print('static library %s has several files with the same basename:\n' %
spec['target_name'] + error + 'libtool on OS X will generate' +
' warnings for them.')
raise GypError('Duplicate basenames in sources section, see list above')
# Map from qualified target to path to output.
target_outputs = {}
# Map from qualified target to any linkable output. A subset
# of target_outputs. E.g. when mybinary depends on liba, we want to
# include liba in the linker line; when otherbinary depends on
# mybinary, we just want to build mybinary first.
target_link_deps = {}
class MakefileWriter(object):
"""MakefileWriter packages up the writing of one target-specific foobar.mk.
Its only real entry point is Write(), and is mostly used for namespacing.
"""
def __init__(self, generator_flags, flavor):
self.generator_flags = generator_flags
self.flavor = flavor
self.suffix_rules_srcdir = {}
self.suffix_rules_objdir1 = {}
self.suffix_rules_objdir2 = {}
# Generate suffix rules for all compilable extensions.
for ext in COMPILABLE_EXTENSIONS.keys():
# Suffix rules for source folder.
self.suffix_rules_srcdir.update({ext: ("""\
$(obj).$(TOOLSET)/$(TARGET)/%%.o: $(srcdir)/%%%s FORCE_DO_CMD
@$(call do_cmd,%s,1)
""" % (ext, COMPILABLE_EXTENSIONS[ext]))})
# Suffix rules for generated source files.
self.suffix_rules_objdir1.update({ext: ("""\
$(obj).$(TOOLSET)/$(TARGET)/%%.o: $(obj).$(TOOLSET)/%%%s FORCE_DO_CMD
@$(call do_cmd,%s,1)
""" % (ext, COMPILABLE_EXTENSIONS[ext]))})
self.suffix_rules_objdir2.update({ext: ("""\
$(obj).$(TOOLSET)/$(TARGET)/%%.o: $(obj)/%%%s FORCE_DO_CMD
@$(call do_cmd,%s,1)
""" % (ext, COMPILABLE_EXTENSIONS[ext]))})
def Write(self, qualified_target, base_path, output_filename, spec, configs,
part_of_all):
"""The main entry point: writes a .mk file for a single target.
Arguments:
qualified_target: target we're generating
base_path: path relative to source root we're building in, used to resolve
target-relative paths
output_filename: output .mk file name to write
spec, configs: gyp info
part_of_all: flag indicating this target is part of 'all'
"""
gyp.common.EnsureDirExists(output_filename)
self.fp = open(output_filename, 'w')
self.fp.write(header)
self.qualified_target = qualified_target
self.path = base_path
self.target = spec['target_name']
self.type = spec['type']
self.toolset = spec['toolset']
self.is_mac_bundle = gyp.xcode_emulation.IsMacBundle(self.flavor, spec)
if self.flavor == 'mac':
self.xcode_settings = gyp.xcode_emulation.XcodeSettings(spec)
else:
self.xcode_settings = None
deps, link_deps = self.ComputeDeps(spec)
# Some of the generation below can add extra output, sources, or
# link dependencies. All of the out params of the functions that
# follow use names like extra_foo.
extra_outputs = []
extra_sources = []
extra_link_deps = []
extra_mac_bundle_resources = []
mac_bundle_deps = []
if self.is_mac_bundle:
self.output = self.ComputeMacBundleOutput(spec)
self.output_binary = self.ComputeMacBundleBinaryOutput(spec)
else:
self.output = self.output_binary = self.ComputeOutput(spec)
self.is_standalone_static_library = bool(
spec.get('standalone_static_library', 0))
self._INSTALLABLE_TARGETS = ('executable', 'loadable_module',
'shared_library')
if (self.is_standalone_static_library or
self.type in self._INSTALLABLE_TARGETS):
self.alias = os.path.basename(self.output)
install_path = self._InstallableTargetInstallPath()
else:
self.alias = self.output
install_path = self.output
self.WriteLn("TOOLSET := " + self.toolset)
self.WriteLn("TARGET := " + self.target)
# Actions must come first, since they can generate more OBJs for use below.
if 'actions' in spec:
self.WriteActions(spec['actions'], extra_sources, extra_outputs,
extra_mac_bundle_resources, part_of_all)
# Rules must be early like actions.
if 'rules' in spec:
self.WriteRules(spec['rules'], extra_sources, extra_outputs,
extra_mac_bundle_resources, part_of_all)
if 'copies' in spec:
self.WriteCopies(spec['copies'], extra_outputs, part_of_all)
# Bundle resources.
if self.is_mac_bundle:
all_mac_bundle_resources = (
spec.get('mac_bundle_resources', []) + extra_mac_bundle_resources)
self.WriteMacBundleResources(all_mac_bundle_resources, mac_bundle_deps)
self.WriteMacInfoPlist(mac_bundle_deps)
# Sources.
all_sources = spec.get('sources', []) + extra_sources
if all_sources:
if self.flavor == 'mac':
# libtool on OS X generates warnings for duplicate basenames in the same
# target.
_ValidateSourcesForOSX(spec, all_sources)
self.WriteSources(
configs, deps, all_sources, extra_outputs,
extra_link_deps, part_of_all,
gyp.xcode_emulation.MacPrefixHeader(
self.xcode_settings, lambda p: Sourceify(self.Absolutify(p)),
self.Pchify))
sources = filter(Compilable, all_sources)
if sources:
self.WriteLn(SHARED_HEADER_SUFFIX_RULES_COMMENT1)
extensions = set([os.path.splitext(s)[1] for s in sources])
for ext in extensions:
if ext in self.suffix_rules_srcdir:
self.WriteLn(self.suffix_rules_srcdir[ext])
self.WriteLn(SHARED_HEADER_SUFFIX_RULES_COMMENT2)
for ext in extensions:
if ext in self.suffix_rules_objdir1:
self.WriteLn(self.suffix_rules_objdir1[ext])
for ext in extensions:
if ext in self.suffix_rules_objdir2:
self.WriteLn(self.suffix_rules_objdir2[ext])
self.WriteLn('# End of this set of suffix rules')
# Add dependency from bundle to bundle binary.
if self.is_mac_bundle:
mac_bundle_deps.append(self.output_binary)
self.WriteTarget(spec, configs, deps, extra_link_deps + link_deps,
mac_bundle_deps, extra_outputs, part_of_all)
# Update global list of target outputs, used in dependency tracking.
target_outputs[qualified_target] = install_path
# Update global list of link dependencies.
if self.type in ('static_library', 'shared_library'):
target_link_deps[qualified_target] = self.output_binary
# Currently any versions have the same effect, but in future the behavior
# could be different.
if self.generator_flags.get('android_ndk_version', None):
self.WriteAndroidNdkModuleRule(self.target, all_sources, link_deps)
self.fp.close()
def WriteSubMake(self, output_filename, makefile_path, targets, build_dir):
"""Write a "sub-project" Makefile.
This is a small, wrapper Makefile that calls the top-level Makefile to build
the targets from a single gyp file (i.e. a sub-project).
Arguments:
output_filename: sub-project Makefile name to write
makefile_path: path to the top-level Makefile
targets: list of "all" targets for this sub-project
build_dir: build output directory, relative to the sub-project
"""
gyp.common.EnsureDirExists(output_filename)
self.fp = open(output_filename, 'w')
self.fp.write(header)
# For consistency with other builders, put sub-project build output in the
# sub-project dir (see test/subdirectory/gyptest-subdir-all.py).
self.WriteLn('export builddir_name ?= %s' %
os.path.join(os.path.dirname(output_filename), build_dir))
self.WriteLn('.PHONY: all')
self.WriteLn('all:')
if makefile_path:
makefile_path = ' -C ' + makefile_path
self.WriteLn('\t$(MAKE)%s %s' % (makefile_path, ' '.join(targets)))
self.fp.close()
def WriteActions(self, actions, extra_sources, extra_outputs,
extra_mac_bundle_resources, part_of_all):
"""Write Makefile code for any 'actions' from the gyp input.
extra_sources: a list that will be filled in with newly generated source
files, if any
extra_outputs: a list that will be filled in with any outputs of these
actions (used to make other pieces dependent on these
actions)
part_of_all: flag indicating this target is part of 'all'
"""
env = self.GetSortedXcodeEnv()
for action in actions:
name = StringToMakefileVariable('%s_%s' % (self.qualified_target,
action['action_name']))
self.WriteLn('### Rules for action "%s":' % action['action_name'])
inputs = action['inputs']
outputs = action['outputs']
# Build up a list of outputs.
# Collect the output dirs we'll need.
dirs = set()
for out in outputs:
dir = os.path.split(out)[0]
if dir:
dirs.add(dir)
if int(action.get('process_outputs_as_sources', False)):
extra_sources += outputs
if int(action.get('process_outputs_as_mac_bundle_resources', False)):
extra_mac_bundle_resources += outputs
# Write the actual command.
action_commands = action['action']
if self.flavor == 'mac':
action_commands = [gyp.xcode_emulation.ExpandEnvVars(command, env)
for command in action_commands]
command = gyp.common.EncodePOSIXShellList(action_commands)
if 'message' in action:
self.WriteLn('quiet_cmd_%s = ACTION %s $@' % (name, action['message']))
else:
self.WriteLn('quiet_cmd_%s = ACTION %s $@' % (name, name))
if len(dirs) > 0:
command = 'mkdir -p %s' % ' '.join(dirs) + '; ' + command
cd_action = 'cd %s; ' % Sourceify(self.path or '.')
# command and cd_action get written to a toplevel variable called
# cmd_foo. Toplevel variables can't handle things that change per
# makefile like $(TARGET), so hardcode the target.
command = command.replace('$(TARGET)', self.target)
cd_action = cd_action.replace('$(TARGET)', self.target)
# Set LD_LIBRARY_PATH in case the action runs an executable from this
# build which links to shared libs from this build.
# actions run on the host, so they should in theory only use host
# libraries, but until everything is made cross-compile safe, also use
# target libraries.
# TODO(piman): when everything is cross-compile safe, remove lib.target
self.WriteLn('cmd_%s = LD_LIBRARY_PATH=$(builddir)/lib.host:'
'$(builddir)/lib.target:$$LD_LIBRARY_PATH; '
'export LD_LIBRARY_PATH; '
'%s%s'
% (name, cd_action, command))
self.WriteLn()
outputs = map(self.Absolutify, outputs)
# The makefile rules are all relative to the top dir, but the gyp actions
# are defined relative to their containing dir. This replaces the obj
# variable for the action rule with an absolute version so that the output
# goes in the right place.
# Only write the 'obj' and 'builddir' rules for the "primary" output (:1);
# it's superfluous for the "extra outputs", and this avoids accidentally
# writing duplicate dummy rules for those outputs.
# Same for environment.
self.WriteLn("%s: obj := $(abs_obj)" % QuoteSpaces(outputs[0]))
self.WriteLn("%s: builddir := $(abs_builddir)" % QuoteSpaces(outputs[0]))
self.WriteSortedXcodeEnv(outputs[0], self.GetSortedXcodeEnv())
for input in inputs:
assert ' ' not in input, (
"Spaces in action input filenames not supported (%s)" % input)
for output in outputs:
assert ' ' not in output, (
"Spaces in action output filenames not supported (%s)" % output)
# See the comment in WriteCopies about expanding env vars.
outputs = [gyp.xcode_emulation.ExpandEnvVars(o, env) for o in outputs]
inputs = [gyp.xcode_emulation.ExpandEnvVars(i, env) for i in inputs]
self.WriteDoCmd(outputs, map(Sourceify, map(self.Absolutify, inputs)),
part_of_all=part_of_all, command=name)
# Stuff the outputs in a variable so we can refer to them later.
outputs_variable = 'action_%s_outputs' % name
self.WriteLn('%s := %s' % (outputs_variable, ' '.join(outputs)))
extra_outputs.append('$(%s)' % outputs_variable)
self.WriteLn()
self.WriteLn()
def WriteRules(self, rules, extra_sources, extra_outputs,
extra_mac_bundle_resources, part_of_all):
"""Write Makefile code for any 'rules' from the gyp input.
extra_sources: a list that will be filled in with newly generated source
files, if any
extra_outputs: a list that will be filled in with any outputs of these
rules (used to make other pieces dependent on these rules)
part_of_all: flag indicating this target is part of 'all'
"""
env = self.GetSortedXcodeEnv()
for rule in rules:
name = StringToMakefileVariable('%s_%s' % (self.qualified_target,
rule['rule_name']))
count = 0
self.WriteLn('### Generated for rule %s:' % name)
all_outputs = []
for rule_source in rule.get('rule_sources', []):
dirs = set()
(rule_source_dirname, rule_source_basename) = os.path.split(rule_source)
(rule_source_root, rule_source_ext) = \
os.path.splitext(rule_source_basename)
outputs = [self.ExpandInputRoot(out, rule_source_root,
rule_source_dirname)
for out in rule['outputs']]
for out in outputs:
dir = os.path.dirname(out)
if dir:
dirs.add(dir)
if int(rule.get('process_outputs_as_sources', False)):
extra_sources += outputs