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# @private
class DevelopmentTools
class << self
def locate(tool)
# Don't call tools (cc, make, strip, etc.) directly!
# Give the name of the binary you look for as a string to this method
# in order to get the full path back as a Pathname.
(@locate ||= {}).fetch(tool) do |key|
@locate[key] = if File.executable?(path = "/usr/bin/#{tool}")
Pathname.new path
# Homebrew GCCs most frequently; much faster to check this before xcrun
elsif (path = HOMEBREW_PREFIX/"bin/#{tool}").executable?
path
end
end
end
def installed?
which("clang") || which("gcc")
end
def installation_instructions
"Install Clang or brew install gcc"
end
alias_method :custom_installation_instructions,
:installation_instructions
def default_cc
cc = DevelopmentTools.locate "cc"
cc.realpath.basename.to_s rescue nil
end
def default_compiler
case default_cc
# if GCC 4.2 is installed, e.g. via Tigerbrew, prefer it
# over the system's GCC 4.0
when /^gcc-4.0/ then gcc_42_build_version ? :gcc : :gcc_4_0
when /^gcc/ then :gcc
else :clang
end
end
def gcc_40_build_version
@gcc_40_build_version ||=
if (path = locate("gcc-4.0"))
`#{path} --version 2>/dev/null`[/build (\d{4,})/, 1].to_i
end
end
alias_method :gcc_4_0_build_version, :gcc_40_build_version
def gcc_42_build_version
@gcc_42_build_version ||=
begin
gcc = locate("gcc-4.2") || HOMEBREW_PREFIX.join("opt/apple-gcc42/bin/gcc-4.2")
if gcc.exist? && !gcc.realpath.basename.to_s.start_with?("llvm")
`#{gcc} --version 2>/dev/null`[/build (\d{4,})/, 1].to_i
end
end
end
alias_method :gcc_build_version, :gcc_42_build_version
def clang_version
@clang_version ||=
if (path = locate("clang"))
`#{path} --version`[/(?:clang|LLVM) version (\d\.\d)/, 1]
end
end
def clang_build_version
@clang_build_version ||=
if (path = locate("clang"))
`#{path} --version`[/clang-(\d{2,})/, 1].to_i
end
end
def non_apple_gcc_version(cc)
(@non_apple_gcc_version ||= {}).fetch(cc) do
path = HOMEBREW_PREFIX.join("opt", "gcc", "bin", cc)
path = locate(cc) unless path.exist?
version = `#{path} --version`[/gcc(?:-\d(?:\.\d)? \(.+\))? (\d\.\d\.\d)/, 1] if path
@non_apple_gcc_version[cc] = version
end
end
def clear_version_cache
@gcc_40_build_version = @gcc_42_build_version = nil
@clang_version = @clang_build_version = nil
@non_apple_gcc_version = {}
end
end
end
require "extend/os/development_tools"
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