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require "extend/ENV/shared"
require "development_tools"
# ### Why `superenv`?
#
# 1. Only specify the environment we need (NO LDFLAGS for cmake)
# 2. Only apply compiler specific options when we are calling that compiler
# 3. Force all incpaths and libpaths into the cc instantiation (less bugs)
# 4. Cater toolchain usage to specific Xcode versions
# 5. Remove flags that we don't want or that will break builds
# 6. Simpler code
# 7. Simpler formula that *just work*
# 8. Build-system agnostic configuration of the tool-chain
module Superenv
include SharedEnvExtension
# @private
attr_accessor :keg_only_deps, :deps, :run_time_deps
attr_accessor :x11
def self.extended(base)
base.keg_only_deps = []
base.deps = []
base.run_time_deps = []
end
# @private
def self.bin; end
def reset
super
# Configure scripts generated by autoconf 2.61 or later export as_nl, which
# we use as a heuristic for running under configure
delete("as_nl")
end
# @private
def setup_build_environment(formula = nil)
super
send(compiler)
self["HOMEBREW_ENV"] = "super"
self["MAKEFLAGS"] ||= "-j#{determine_make_jobs}"
self["PATH"] = determine_path
self["PKG_CONFIG_PATH"] = determine_pkg_config_path
self["PKG_CONFIG_LIBDIR"] = determine_pkg_config_libdir
self["HOMEBREW_CCCFG"] = determine_cccfg
self["HOMEBREW_OPTIMIZATION_LEVEL"] = "Os"
self["HOMEBREW_BREW_FILE"] = HOMEBREW_BREW_FILE.to_s
self["HOMEBREW_PREFIX"] = HOMEBREW_PREFIX.to_s
self["HOMEBREW_CELLAR"] = HOMEBREW_CELLAR.to_s
self["HOMEBREW_OPT"] = "#{HOMEBREW_PREFIX}/opt"
self["HOMEBREW_TEMP"] = HOMEBREW_TEMP.to_s
self["HOMEBREW_OPTFLAGS"] = determine_optflags
self["HOMEBREW_ARCHFLAGS"] = ""
self["CMAKE_PREFIX_PATH"] = determine_cmake_prefix_path
self["CMAKE_FRAMEWORK_PATH"] = determine_cmake_frameworks_path
self["CMAKE_INCLUDE_PATH"] = determine_cmake_include_path
self["CMAKE_LIBRARY_PATH"] = determine_cmake_library_path
self["ACLOCAL_PATH"] = determine_aclocal_path
self["M4"] = DevelopmentTools.locate("m4") if deps.any? { |d| d.name == "autoconf" }
self["HOMEBREW_ISYSTEM_PATHS"] = determine_isystem_paths
self["HOMEBREW_INCLUDE_PATHS"] = determine_include_paths
self["HOMEBREW_LIBRARY_PATHS"] = determine_library_paths
self["HOMEBREW_DEPENDENCIES"] = determine_dependencies
self["HOMEBREW_FORMULA_PREFIX"] = formula.prefix unless formula.nil?
# The HOMEBREW_CCCFG ENV variable is used by the ENV/cc tool to control
# compiler flag stripping. It consists of a string of characters which act
# as flags. Some of these flags are mutually exclusive.
#
# O - Enables argument refurbishing. Only active under the
# make/bsdmake wrappers currently.
# x - Enable C++11 mode.
# g - Enable "-stdlib=libc++" for clang.
# h - Enable "-stdlib=libstdc++" for clang.
# K - Don't strip -arch <arch>, -m32, or -m64
# w - Pass -no_weak_imports to the linker
#
# On 10.8 and newer, these flags will also be present:
# s - apply fix for sed's Unicode support
# a - apply fix for apr-1-config path
end
alias generic_setup_build_environment setup_build_environment
private
def cc=(val)
self["HOMEBREW_CC"] = super
end
def cxx=(val)
self["HOMEBREW_CXX"] = super
end
def determine_cxx
determine_cc.to_s.gsub("gcc", "g++").gsub("clang", "clang++")
end
def homebrew_extra_paths
[]
end
def determine_path
path = PATH.new(Superenv.bin)
# Formula dependencies can override standard tools.
path.append(deps.map(&:opt_bin))
path.append(homebrew_extra_paths)
path.append("/usr/bin", "/bin", "/usr/sbin", "/sbin")
# Homebrew's apple-gcc42 will be outside the PATH in superenv,
# so xcrun may not be able to find it
begin
case homebrew_cc
when "gcc-4.2"
path.append(Formulary.factory("apple-gcc42").opt_bin)
when GNU_GCC_REGEXP
path.append(gcc_version_formula($&).opt_bin)
end
rescue FormulaUnavailableError
# Don't fail and don't add these formulae to the path if they don't exist.
nil
end
path.existing
end
def homebrew_extra_pkg_config_paths
[]
end
def determine_pkg_config_path
PATH.new(
deps.map { |d| d.opt_lib/"pkgconfig" },
deps.map { |d| d.opt_share/"pkgconfig" },
).existing
end
def determine_pkg_config_libdir
PATH.new(
homebrew_extra_pkg_config_paths,
).existing
end
def homebrew_extra_aclocal_paths
[]
end
def determine_aclocal_path
PATH.new(
keg_only_deps.map { |d| d.opt_share/"aclocal" },
HOMEBREW_PREFIX/"share/aclocal",
homebrew_extra_aclocal_paths,
).existing
end
def homebrew_extra_isystem_paths
[]
end
def determine_isystem_paths
PATH.new(
HOMEBREW_PREFIX/"include",
homebrew_extra_isystem_paths,
).existing
end
def determine_include_paths
PATH.new(keg_only_deps.map(&:opt_include)).existing
end
def homebrew_extra_library_paths
[]
end
def determine_library_paths
paths = [
keg_only_deps.map(&:opt_lib),
HOMEBREW_PREFIX/"lib",
]
paths += homebrew_extra_library_paths
PATH.new(paths).existing
end
def determine_dependencies
deps.map(&:name).join(",")
end
def determine_cmake_prefix_path
PATH.new(
keg_only_deps.map(&:opt_prefix),
HOMEBREW_PREFIX.to_s,
).existing
end
def homebrew_extra_cmake_include_paths
[]
end
def determine_cmake_include_path
PATH.new(homebrew_extra_cmake_include_paths).existing
end
def homebrew_extra_cmake_library_paths
[]
end
def determine_cmake_library_path
PATH.new(homebrew_extra_cmake_library_paths).existing
end
def homebrew_extra_cmake_frameworks_paths
[]
end
def determine_cmake_frameworks_path
PATH.new(
deps.map(&:opt_frameworks),
homebrew_extra_cmake_frameworks_paths,
).existing
end
def determine_make_jobs
if (j = self["HOMEBREW_MAKE_JOBS"].to_i) < 1
Hardware::CPU.cores
else
j
end
end
def determine_optflags
if ARGV.build_bottle?
arch = ARGV.bottle_arch || Hardware.oldest_cpu
Hardware::CPU.optimization_flags.fetch(arch)
elsif Hardware::CPU.intel? && !Hardware::CPU.sse4?
Hardware::CPU.optimization_flags.fetch(Hardware.oldest_cpu)
elsif ![:gcc_4_0, :gcc_4_2].include?(compiler)
"-march=native"
# This is mutated elsewhere, so return an empty string in this case
else
""
end
end
def determine_cccfg
""
end
public
# Removes the MAKEFLAGS environment variable, causing make to use a single job.
# This is useful for makefiles with race conditions.
# When passed a block, MAKEFLAGS is removed only for the duration of the block and is restored after its completion.
def deparallelize
old = delete("MAKEFLAGS")
if block_given?
begin
yield
ensure
self["MAKEFLAGS"] = old
end
end
old
end
def make_jobs
self["MAKEFLAGS"] =~ /-\w*j(\d+)/
[Regexp.last_match(1).to_i, 1].max
end
def universal_binary
check_for_compiler_universal_support
self["HOMEBREW_ARCHFLAGS"] = Hardware::CPU.universal_archs.as_arch_flags
# GCC doesn't accept "-march" for a 32-bit CPU with "-arch x86_64"
return if compiler_any_clang?
return unless Hardware::CPU.is_32_bit?
self["HOMEBREW_OPTFLAGS"] = self["HOMEBREW_OPTFLAGS"].sub(
/-march=\S*/,
"-Xarch_#{Hardware::CPU.arch_32_bit} \\0",
)
end
def permit_arch_flags
append_to_cccfg "K"
end
def m32
append "HOMEBREW_ARCHFLAGS", "-m32"
end
def m64
append "HOMEBREW_ARCHFLAGS", "-m64"
end
def cxx11
if homebrew_cc == "clang"
append_to_cccfg "x"
append_to_cccfg "g"
elsif compiler_with_cxx11_support?(homebrew_cc)
append_to_cccfg "x"
else
raise "The selected compiler doesn't support C++11: #{homebrew_cc}"
end
end
def libcxx
append_to_cccfg "g" if compiler == :clang
end
def libstdcxx
append_to_cccfg "h" if compiler == :clang
end
# @private
def refurbish_args
append_to_cccfg "O"
end
%w[O3 O2 O1 O0 Os].each do |opt|
define_method opt do
self["HOMEBREW_OPTIMIZATION_LEVEL"] = opt
end
end
def set_x11_env_if_installed; end
def set_cpu_flags(_, _ = "", _ = {}); end
end
require "extend/os/extend/ENV/super"