1import os 2import pipes 3import shlex 4import sys 5 6if not 'go' in config.root.llvm_bindings: 7 config.unsupported = True 8 9if config.root.include_go_tests != 'ON': 10 config.unsupported = True 11 12def find_executable(executable, path=None): 13 if path is None: 14 path = os.environ['PATH'] 15 paths = path.split(os.pathsep) 16 base, ext = os.path.splitext(executable) 17 18 if (sys.platform == 'win32' or os.name == 'os2') and (ext != '.exe'): 19 executable = executable + '.exe' 20 21 if not os.path.isfile(executable): 22 for p in paths: 23 f = os.path.join(p, executable) 24 if os.path.isfile(f): 25 return f 26 return None 27 else: 28 return executable 29 30# Resolve certain symlinks in the first word of compiler. 31# 32# This is a Go-specific hack. cgo and other Go tools check $CC and $CXX for the 33# substring 'clang' to determine if the compiler is Clang. This won't work if 34# $CC is cc and cc is a symlink pointing to clang, as it is on Darwin. 35# 36# Go tools also have problems with ccache, so we disable it. 37def fixup_compiler_path(compiler): 38 args = shlex.split(compiler) 39 if args[0].endswith('ccache'): 40 args = args[1:] 41 42 path = find_executable(args[0]) 43 44 try: 45 if path.endswith('/cc') and os.readlink(path) == 'clang': 46 args[0] = path[:len(path)-2] + 'clang' 47 except (AttributeError, OSError): 48 pass 49 50 try: 51 if path.endswith('/c++') and os.readlink(path) == 'clang++': 52 args[0] = path[:len(path)-3] + 'clang++' 53 except (AttributeError, OSError): 54 pass 55 56 return ' '.join([pipes.quote(arg) for arg in args]) 57 58config.environment['CC'] = fixup_compiler_path(config.host_cc) 59config.environment['CXX'] = fixup_compiler_path(config.host_cxx) 60config.environment['CGO_LDFLAGS'] = config.host_ldflags 61