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
128
129
130
131
132
133
|
module CompilerConstants
GNU_GCC_VERSIONS = 3..9
GNU_GCC_REGEXP = /^gcc-(4\.[3-9])$/
end
class CompilerFailure
attr_reader :name
attr_rw :version
# Allows Apple compiler `fails_with` statements to keep using `build`
# even though `build` and `version` are the same internally
alias_method :build, :version
# The cause is no longer used so we need not hold a reference to the string
def cause(_); end
def self.for_standard standard
COLLECTIONS.fetch(standard) do
raise ArgumentError, "\"#{standard}\" is not a recognized standard"
end
end
def self.create(spec, &block)
# Non-Apple compilers are in the format fails_with compiler => version
if spec.is_a?(Hash)
_, major_version = spec.each { |e| break e }
name = "gcc-#{major_version}"
# so fails_with :gcc => '4.8' simply marks all 4.8 releases incompatible
version = "#{major_version}.999"
else
name = spec
version = 9999
end
new(name, version, &block)
end
def initialize(name, version, &block)
@name = name
@version = version
instance_eval(&block) if block_given?
end
def ===(compiler)
name == compiler.name && version >= compiler.version
end
def inspect
"#<#{self.class.name}: #{name} #{version}>"
end
COLLECTIONS = {
:cxx11 => [
create(:gcc_4_0),
create(:gcc),
create(:llvm),
create(:clang) { build 425 },
create(:gcc => "4.3"),
create(:gcc => "4.4"),
create(:gcc => "4.5"),
create(:gcc => "4.6"),
],
:openmp => [
create(:clang),
create(:llvm),
],
}
end
class CompilerSelector
include CompilerConstants
Compiler = Struct.new(:name, :version)
COMPILER_PRIORITY = {
:clang => [:clang, :gcc, :llvm, :gnu, :gcc_4_0],
:gcc => [:gcc, :llvm, :gnu, :clang, :gcc_4_0],
:llvm => [:llvm, :gcc, :gnu, :clang, :gcc_4_0],
:gcc_4_0 => [:gcc_4_0, :gcc, :llvm, :gnu, :clang],
}
def self.select_for(formula, compilers=self.compilers)
new(formula, MacOS, compilers).compiler
end
def self.compilers
COMPILER_PRIORITY.fetch(MacOS.default_compiler)
end
attr_reader :formula, :failures, :versions, :compilers
def initialize(formula, versions, compilers)
@formula = formula
@failures = formula.compiler_failures
@versions = versions
@compilers = compilers
end
def compiler
find_compiler { |c| return c.name unless fails_with?(c) }
raise CompilerSelectionError.new(formula)
end
private
def find_compiler
compilers.each do |compiler|
case compiler
when :gnu
GNU_GCC_VERSIONS.reverse_each do |v|
name = "gcc-4.#{v}"
version = compiler_version(name)
yield Compiler.new(name, version) if version
end
else
version = compiler_version(compiler)
yield Compiler.new(compiler, version) if version
end
end
end
def fails_with?(compiler)
failures.any? { |failure| failure === compiler }
end
def compiler_version(name)
case name
when GNU_GCC_REGEXP
versions.non_apple_gcc_version(name)
else
versions.send("#{name}_build_version")
end
end
end
|
