| 1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
 | # @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 custom_installation_instructions installation_instructions
    def default_cc
      cc = DevelopmentTools.locate "cc"
      begin
        cc.realpath.basename.to_s
      rescue
        nil
      end
    end
    def default_compiler
      :clang
    end
    def gcc_4_0_build_version
      @gcc_4_0_build_version ||= begin
        if (path = locate("gcc-4.0")) &&
           build_version = `#{path} --version 2>/dev/null`[/build (\d{4,})/, 1]
          Version.new build_version
        else
          Version::NULL
        end
      end
    end
    def gcc_4_2_build_version
      @gcc_4_2_build_version ||= begin
        gcc = locate("gcc-4.2") || HOMEBREW_PREFIX/"opt/apple-gcc42/bin/gcc-4.2"
        if gcc.exist? && !gcc.realpath.basename.to_s.start_with?("llvm") &&
           build_version = `#{gcc} --version 2>/dev/null`[/build (\d{4,})/, 1]
          Version.new build_version
        else
          Version::NULL
        end
      end
    end
    def clang_version
      @clang_version ||= begin
        if (path = locate("clang")) &&
           build_version = `#{path} --version`[/(?:clang|LLVM) version (\d\.\d)/, 1]
          Version.new build_version
        else
          Version::NULL
        end
      end
    end
    def clang_build_version
      @clang_build_version ||= begin
        if (path = locate("clang")) &&
           build_version = `#{path} --version`[/clang-(\d{2,})/, 1]
          Version.new build_version
        else
          Version::NULL
        end
      end
    end
    def llvm_clang_build_version
      @llvm_clang_build_version ||= begin
        path = Formulary.factory("llvm").opt_prefix/"bin/clang"
        if path.executable? &&
           build_version = `#{path} --version`[/clang version (\d\.\d\.\d)/, 1]
          Version.new build_version
        else
          Version::NULL
        end
      end
    end
    def non_apple_gcc_version(cc)
      (@non_apple_gcc_version ||= {}).fetch(cc) do
        path = HOMEBREW_PREFIX/"opt/gcc/bin"/cc
        path = locate(cc) unless path.exist?
        version = if path &&
                     build_version = `#{path} --version`[/gcc(?:-\d(?:\.\d)? \(.+\))? (\d\.\d\.\d)/, 1]
          Version.new build_version
        else
          Version::NULL
        end
        @non_apple_gcc_version[cc] = version
      end
    end
    def clear_version_cache
      @gcc_4_0_build_version = @gcc_4_2_build_version = nil
      @clang_version = @clang_build_version = nil
      @non_apple_gcc_version = {}
    end
    def curl_handles_most_https_certificates?
      true
    end
    def subversion_handles_most_https_certificates?
      true
    end
  end
end
require "extend/os/development_tools"
 |