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85aaf69f SL |
1 | import os |
2 | import pipes | |
3 | import shlex | |
4 | import sys | |
5 | ||
6 | if not 'go' in config.root.llvm_bindings: | |
7 | config.unsupported = True | |
8 | ||
9 | def find_executable(executable, path=None): | |
10 | if path is None: | |
11 | path = os.environ['PATH'] | |
12 | paths = path.split(os.pathsep) | |
13 | base, ext = os.path.splitext(executable) | |
14 | ||
15 | if (sys.platform == 'win32' or os.name == 'os2') and (ext != '.exe'): | |
16 | executable = executable + '.exe' | |
17 | ||
18 | if not os.path.isfile(executable): | |
19 | for p in paths: | |
20 | f = os.path.join(p, executable) | |
21 | if os.path.isfile(f): | |
22 | return f | |
23 | return None | |
24 | else: | |
25 | return executable | |
26 | ||
27 | # Resolve certain symlinks in the first word of compiler. | |
28 | # | |
29 | # This is a Go-specific hack. cgo and other Go tools check $CC and $CXX for the | |
30 | # substring 'clang' to determine if the compiler is Clang. This won't work if | |
31 | # $CC is cc and cc is a symlink pointing to clang, as it is on Darwin. | |
32 | # | |
33 | # Go tools also have problems with ccache, so we disable it. | |
34 | def fixup_compiler_path(compiler): | |
35 | args = shlex.split(compiler) | |
36 | if args[0].endswith('ccache'): | |
37 | args = args[1:] | |
38 | ||
39 | path = find_executable(args[0]) | |
40 | ||
41 | try: | |
42 | if path.endswith('/cc') and os.readlink(path) == 'clang': | |
43 | args[0] = path[:len(path)-2] + 'clang' | |
44 | except (AttributeError, OSError): | |
45 | pass | |
46 | ||
47 | try: | |
48 | if path.endswith('/c++') and os.readlink(path) == 'clang++': | |
49 | args[0] = path[:len(path)-3] + 'clang++' | |
50 | except (AttributeError, OSError): | |
51 | pass | |
52 | ||
53 | return ' '.join([pipes.quote(arg) for arg in args]) | |
54 | ||
55 | config.environment['CC'] = fixup_compiler_path(config.host_cc) | |
56 | config.environment['CXX'] = fixup_compiler_path(config.host_cxx) | |
57 | config.environment['CGO_LDFLAGS'] = config.host_ldflags |