220 lines
8 KiB
Python
220 lines
8 KiB
Python
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# 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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"""Tool-specific initialization for swig.
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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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import os.path
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import re
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import subprocess
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import sys
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import SCons.Action
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import SCons.Defaults
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import SCons.Node
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import SCons.Tool
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import SCons.Util
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import SCons.Warnings
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verbose = False
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swigs = [ 'swig', 'swig3.0', 'swig2.0' ]
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SwigAction = SCons.Action.Action('$SWIGCOM', '$SWIGCOMSTR')
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def swigSuffixEmitter(env, source):
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if '-c++' in SCons.Util.CLVar(env.subst("$SWIGFLAGS", source=source)):
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return '$SWIGCXXFILESUFFIX'
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else:
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return '$SWIGCFILESUFFIX'
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# Match '%module test', as well as '%module(directors="1") test'
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# Also allow for test to be quoted (SWIG permits double quotes, but not single)
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# Also allow for the line to have spaces after test if not quoted
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_reModule = re.compile(r'%module(\s*\(.*\))?\s+("?)(\S+)\2')
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def _find_modules(src):
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"""Find all modules referenced by %module lines in `src`, a SWIG .i file.
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Returns a list of all modules, and a flag set if SWIG directors have
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been requested (SWIG will generate an additional header file in this
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case.)"""
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directors = 0
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mnames = []
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try:
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with open(src) as f:
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data = f.read()
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matches = _reModule.findall(data)
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except IOError:
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# If the file's not yet generated, guess the module name from the file stem
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matches = []
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mnames.append(os.path.splitext(os.path.basename(src))[0])
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for m in matches:
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mnames.append(m[2])
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directors = directors or 'directors' in m[0]
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return mnames, directors
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def _add_director_header_targets(target, env):
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# Directors only work with C++ code, not C
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suffix = env.subst(env['SWIGCXXFILESUFFIX'])
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# For each file ending in SWIGCXXFILESUFFIX, add a new target director
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# header by replacing the ending with SWIGDIRECTORSUFFIX.
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for x in target[:]:
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n = x.name
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d = x.dir
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if n[-len(suffix):] == suffix:
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target.append(d.File(n[:-len(suffix)] + env['SWIGDIRECTORSUFFIX']))
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def _swigEmitter(target, source, env):
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swigflags = env.subst("$SWIGFLAGS", target=target, source=source)
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flags = SCons.Util.CLVar(swigflags)
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for src in source:
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src = str(src.rfile())
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mnames = None
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if "-python" in flags and "-noproxy" not in flags:
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if mnames is None:
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mnames, directors = _find_modules(src)
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if directors:
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_add_director_header_targets(target, env)
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python_files = [m + ".py" for m in mnames]
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outdir = env.subst('$SWIGOUTDIR', target=target, source=source)
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# .py files should be generated in SWIGOUTDIR if specified,
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# otherwise in the same directory as the target
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if outdir:
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python_files = [env.fs.File(os.path.join(outdir, j)) for j in python_files]
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else:
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python_files = [target[0].dir.File(m) for m in python_files]
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target.extend(python_files)
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if "-java" in flags:
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if mnames is None:
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mnames, directors = _find_modules(src)
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if directors:
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_add_director_header_targets(target, env)
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java_files = [[m + ".java", m + "JNI.java"] for m in mnames]
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java_files = SCons.Util.flatten(java_files)
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outdir = env.subst('$SWIGOUTDIR', target=target, source=source)
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if outdir:
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java_files = [os.path.join(outdir, j) for j in java_files]
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java_files = list(map(env.fs.File, java_files))
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def t_from_s(t, p, s, x):
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return t.dir
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tsm = SCons.Node._target_from_source_map
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tkey = len(tsm)
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tsm[tkey] = t_from_s
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for jf in java_files:
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jf._func_target_from_source = tkey
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target.extend(java_files)
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return (target, source)
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def _get_swig_version(env, swig):
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"""Run the SWIG command line tool to get and return the version number"""
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version = None
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swig = env.subst(swig)
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if not swig:
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return version
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pipe = SCons.Action._subproc(env, SCons.Util.CLVar(swig) + ['-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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# MAYBE: out = SCons.Util.to_str (pipe.stdout.read())
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with pipe.stdout:
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out = SCons.Util.to_str(pipe.stdout.read())
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match = re.search(r'SWIG Version\s+(\S+).*', out, re.MULTILINE)
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if match:
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version = match.group(1)
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if verbose:
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print("Version is: %s" % version)
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else:
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if verbose:
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print("Unable to detect version: [%s]" % out)
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return version
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def generate(env):
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"""Add Builders and construction variables for swig to an Environment."""
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c_file, cxx_file = SCons.Tool.createCFileBuilders(env)
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c_file.suffix['.i'] = swigSuffixEmitter
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cxx_file.suffix['.i'] = swigSuffixEmitter
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c_file.add_action('.i', SwigAction)
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c_file.add_emitter('.i', _swigEmitter)
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cxx_file.add_action('.i', SwigAction)
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cxx_file.add_emitter('.i', _swigEmitter)
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java_file = SCons.Tool.CreateJavaFileBuilder(env)
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java_file.suffix['.i'] = swigSuffixEmitter
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java_file.add_action('.i', SwigAction)
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java_file.add_emitter('.i', _swigEmitter)
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from SCons.Platform.mingw import MINGW_DEFAULT_PATHS
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from SCons.Platform.cygwin import CYGWIN_DEFAULT_PATHS
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from SCons.Platform.win32 import CHOCO_DEFAULT_PATH
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if sys.platform == 'win32':
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swig = SCons.Tool.find_program_path(env, 'swig', default_paths=MINGW_DEFAULT_PATHS + CYGWIN_DEFAULT_PATHS + CHOCO_DEFAULT_PATH)
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if swig:
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swig_bin_dir = os.path.dirname(swig)
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env.AppendENVPath('PATH', swig_bin_dir)
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else:
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SCons.Warnings.warn(
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SCons.Warnings.SConsWarning,
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'swig tool requested, but binary not found in ENV PATH'
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)
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if 'SWIG' not in env:
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env['SWIG'] = env.Detect(swigs) or swigs[0]
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env['SWIGVERSION'] = _get_swig_version(env, env['SWIG'])
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env['SWIGFLAGS'] = SCons.Util.CLVar('')
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env['SWIGDIRECTORSUFFIX'] = '_wrap.h'
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env['SWIGCFILESUFFIX'] = '_wrap$CFILESUFFIX'
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env['SWIGCXXFILESUFFIX'] = '_wrap$CXXFILESUFFIX'
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env['_SWIGOUTDIR'] = r'${"-outdir \"%s\"" % SWIGOUTDIR}'
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env['SWIGPATH'] = []
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env['SWIGINCPREFIX'] = '-I'
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env['SWIGINCSUFFIX'] = ''
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env['_SWIGINCFLAGS'] = '${_concat(SWIGINCPREFIX, SWIGPATH, SWIGINCSUFFIX,' \
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'__env__, RDirs, TARGET, SOURCE, affect_signature=False)}'
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env['SWIGCOM'] = '$SWIG -o $TARGET ${_SWIGOUTDIR} ${_SWIGINCFLAGS} $SWIGFLAGS $SOURCES'
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def exists(env):
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swig = env.get('SWIG') or env.Detect(['swig'])
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return swig
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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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