109 lines
3.5 KiB
Python
Vendored
109 lines
3.5 KiB
Python
Vendored
# MIT License
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#
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# Copyright The SCons Foundation
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#
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# Permission is hereby granted, free of charge, to any person obtaining
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# a copy of this software and associated documentation files (the
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# "Software"), to deal in the Software without restriction, including
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# without limitation the rights to use, copy, modify, merge, publish,
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# distribute, sublicense, and/or sell copies of the Software, and to
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# permit persons to whom the Software is furnished to do so, subject to
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# the following conditions:
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#
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# The above copyright notice and this permission notice shall be included
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# in all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
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# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
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# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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"""SCons.Tool.gcc
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Tool-specific initialization for gcc.
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There normally shouldn't be any need to import this module directly.
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It will usually be imported through the generic SCons.Tool.Tool()
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selection method.
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"""
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from . import cc
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import re
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import subprocess
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import SCons.Util
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compilers = ['gcc', 'cc']
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def generate(env):
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"""Add Builders and construction variables for gcc to an Environment."""
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if 'CC' not in env:
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env['CC'] = env.Detect(compilers) or compilers[0]
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cc.generate(env)
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if env['PLATFORM'] in ['cygwin', 'win32']:
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env['SHCCFLAGS'] = SCons.Util.CLVar('$CCFLAGS')
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else:
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env['SHCCFLAGS'] = SCons.Util.CLVar('$CCFLAGS -fPIC')
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# determine compiler version
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version = detect_version(env, env['CC'])
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if version:
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env['CCVERSION'] = version
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def exists(env):
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# is executable, and is a GNU compiler (or accepts '--version' at least)
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return detect_version(env, env.Detect(env.get('CC', compilers)))
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def detect_version(env, cc):
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"""Return the version of the GNU compiler, or None if it is not a GNU compiler."""
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version = None
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cc = env.subst(cc)
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if not cc:
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return version
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# -dumpversion was added in GCC 3.0. As long as we're supporting
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# GCC versions older than that, we should use --version and a
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# regular expression.
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# pipe = SCons.Action._subproc(env, SCons.Util.CLVar(cc) + ['-dumpversion'],
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pipe=SCons.Action._subproc(env, SCons.Util.CLVar(cc) + ['--version'],
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stdin='devnull',
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stderr='devnull',
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stdout=subprocess.PIPE)
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if pipe.wait() != 0:
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return version
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with pipe.stdout:
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# -dumpversion variant:
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# line = pipe.stdout.read().strip()
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# --version variant:
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line = SCons.Util.to_str(pipe.stdout.readline())
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# Non-GNU compiler's output (like AIX xlc's) may exceed the stdout buffer:
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# So continue with reading to let the child process actually terminate.
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while SCons.Util.to_str(pipe.stdout.readline()):
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pass
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# -dumpversion variant:
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# if line:
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# version = line
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# --version variant:
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match = re.search(r'[0-9]+(\.[0-9]+)+', line)
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if match:
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version = match.group(0)
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return version
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# Local Variables:
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# tab-width:4
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# indent-tabs-mode:nil
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# End:
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# vim: set expandtab tabstop=4 shiftwidth=4:
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