93 lines
2.9 KiB
Python
93 lines
2.9 KiB
Python
"""
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WAF Tool to select the correct toolchain based on the target archtecture.
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This tool must be loaded before compiler tools. Use the environment variable
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TOOLCHAIN to define the toolchain prefix.
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Example::
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def configure(cfg):
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cfg.env.TOOLCHAIN = 'arm-linux-gnueabihf'
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cfg.load('toolchain')
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cfg.load('cxx_compiler')
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"""
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from waflib import Utils, Context
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import os
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suffixes = dict(
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AS='gcc',
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AR='ar',
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LD='g++',
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GDB='gdb',
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OBJCOPY='objcopy',
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)
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def find_realexec_path(cfg, filename, path_list=[]):
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if not filename:
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return ''
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if not path_list:
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path_list = cfg.environ.get('PATH','').split(os.pathsep)
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for dir in path_list:
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path = os.path.abspath(os.path.expanduser(os.path.join(dir, filename)))
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if os.path.isfile(path):
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if os.path.islink(path):
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realpath = os.path.realpath(path)
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if filename not in os.path.basename(realpath):
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continue
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else:
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return os.path.dirname(realpath)
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else:
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return os.path.dirname(path)
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cfg.fatal('Could not find real exec path to %s in path_list %s:' % (filename, path_list))
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def configure(cfg):
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toolchain = cfg.env.TOOLCHAIN
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if toolchain != 'native':
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cfg.msg('Using toolchain prefix', toolchain)
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prefix = toolchain + '-'
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c_compiler = cfg.options.check_c_compiler or 'gcc'
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cxx_compiler = cfg.options.check_cxx_compiler or 'g++'
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if 'gcc' == c_compiler or 'g++' == cxx_compiler or 'clang' == c_compiler or 'clang++' == cxx_compiler:
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toolchain_path = os.path.abspath(os.path.join(find_realexec_path(cfg, prefix + suffixes['AR']), '..'))
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cfg.msg('Using toolchain path', toolchain_path)
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if 'gcc' == c_compiler or 'g++' == cxx_compiler:
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for k in suffixes:
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cfg.env[k] = [prefix + suffixes[k]]
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if 'clang' == c_compiler or 'clang++' == cxx_compiler:
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sysroot = cfg.cmd_and_log([prefix + 'gcc', '--print-sysroot'], quiet=Context.BOTH)[:-1]
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clang_flags = [
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'--target=' + toolchain,
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'--gcc-toolchain=' + toolchain_path,
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'--sysroot=' + sysroot,
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'-B' + os.path.join(toolchain_path, 'bin')
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]
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cfg.env.LINKFLAGS += clang_flags
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if 'gcc' == c_compiler:
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cfg.env['CC'] = [prefix + 'gcc']
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elif 'clang' == c_compiler:
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cfg.env['CC'] = [c_compiler]
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cfg.env['AR'] = [prefix + suffixes['AR']]
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cfg.env.CFLAGS += clang_flags
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if 'g++' == cxx_compiler:
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cfg.env['CXX'] = [prefix + 'g++']
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elif 'clang++' == cxx_compiler:
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cfg.env['CXX'] = [cxx_compiler]
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cfg.env['AR'] = [prefix + suffixes['AR']]
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cfg.env.CXXFLAGS += clang_flags |