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require "set"
class BuildEnvironment
def initialize(*settings)
@settings = Set.new(*settings)
end
def merge(*args)
@settings.merge(*args)
self
end
def <<(o)
@settings << o
self
end
def std?
@settings.include? :std
end
def userpaths?
@settings.include? :userpaths
end
end
module BuildEnvironmentDSL
def env(*settings)
@env ||= BuildEnvironment.new
@env.merge(settings)
end
end
module Homebrew
def build_env_keys(env)
%w[
CC CXX LD OBJC OBJCXX
HOMEBREW_CC HOMEBREW_CXX
CFLAGS CXXFLAGS CPPFLAGS LDFLAGS SDKROOT MAKEFLAGS
CMAKE_PREFIX_PATH CMAKE_INCLUDE_PATH CMAKE_LIBRARY_PATH CMAKE_FRAMEWORK_PATH
MACOSX_DEPLOYMENT_TARGET PKG_CONFIG_PATH PKG_CONFIG_LIBDIR
HOMEBREW_DEBUG HOMEBREW_MAKE_JOBS HOMEBREW_VERBOSE
HOMEBREW_SVN HOMEBREW_GIT
HOMEBREW_SDKROOT HOMEBREW_BUILD_FROM_SOURCE
MAKE GIT CPP
ACLOCAL_PATH PATH CPATH].select { |key| env.key?(key) }
end
def dump_build_env(env, f = $stdout)
keys = build_env_keys(env)
keys -= %w[CC CXX OBJC OBJCXX] if env["CC"] == env["HOMEBREW_CC"]
keys.each do |key|
value = env[key]
s = "#{key}: #{value}"
case key
when "CC", "CXX", "LD"
s << " => #{Pathname.new(value).realpath}" if File.symlink?(value)
end
f.puts s
end
end
end