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#!/usr/bin/python3 -tt
# Copyright 2012 Jussi Pakkanen
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
# http://www.apache.org/licenses/LICENSE-2.0
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import subprocess
class EnvironmentException(Exception):
def __init(self, text):
Exception.__init__(self, text)
def detect_c_compiler(execmd):
exelist = execmd.split()
p = subprocess.Popen(exelist + ['--version'], stdout=subprocess.PIPE)
(out, err) = p.communicate()
out = out.decode()
if (out.startswith('cc ') or out.startswith('gcc')) and \
'Free Software Foundation' in out:
return GnuCCompiler(exelist)
raise EnvironmentException('Unknown compiler ' + execmd)
class CCompiler():
def __init__(self, exelist):
self.exelist = exelist
def get_exelist(self):
return self.exelist
def get_compile_only_flags(self):
return ['-c']
def get_output_flags(self):
return ['-o']
class GnuCCompiler(CCompiler):
std_warn_flags = ['-Wall', '-Winvalid-pch']
std_opt_flags = ['-O2']
def __init__(self, exelist):
CCompiler.__init__(self, exelist)
def get_std_warn_flags(self):
return GnuCCompiler.std_warn_flags
def get_std_opt_flags(self):
return GnuCCompiler.std_opt_flags
def shell_quote(cmdlist):
return ["'" + x + "'" for x in cmdlist]
def test_cmd_line_building():
src_file = 'file.c'
dst_file = 'file.o'
gnuc = detect_c_compiler('/usr/bin/cc')
cmds = gnuc.get_exelist()
cmds += gnuc.get_std_warn_flags()
cmds += gnuc.get_compile_only_flags()
cmds.append(src_file)
cmds += gnuc.get_output_flags()
cmds.append(dst_file)
cmd_line = ' '.join(shell_quote(cmds))
print(cmd_line)
if __name__ == '__main__':
test_cmd_line_building()
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