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"""SCons.Tool.swig
Tool-specific initialization for swig.
There normally shouldn't be any need to import this module directly.
It will usually be imported through the generic SCons.Tool.Tool()
selection method.
"""
#
# __COPYRIGHT__
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be included
# in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
#
__revision__ = "__FILE__ __REVISION__ __DATE__ __DEVELOPER__"
import os.path
import re
import subprocess
import SCons.Action
import SCons.Defaults
import SCons.Tool
import SCons.Util
import SCons.Node
verbose = False
swigs = [ 'swig', 'swig3.0', 'swig2.0' ]
SwigAction = SCons.Action.Action('$SWIGCOM', '$SWIGCOMSTR')
def swigSuffixEmitter(env, source):
if '-c++' in SCons.Util.CLVar(env.subst("$SWIGFLAGS", source=source)):
return '$SWIGCXXFILESUFFIX'
else:
return '$SWIGCFILESUFFIX'
# Match '%module test', as well as '%module(directors="1") test'
# Also allow for test to be quoted (SWIG permits double quotes, but not single)
# Also allow for the line to have spaces after test if not quoted
_reModule = re.compile(r'%module(\s*\(.*\))?\s+("?)(\S+)\2')
def _find_modules(src):
"""Find all modules referenced by %module lines in `src`, a SWIG .i file.
Returns a list of all modules, and a flag set if SWIG directors have
been requested (SWIG will generate an additional header file in this
case.)"""
directors = 0
mnames = []
try:
matches = _reModule.findall(open(src).read())
except IOError:
# If the file's not yet generated, guess the module name from the file stem
matches = []
mnames.append(os.path.splitext(os.path.basename(src))[0])
for m in matches:
mnames.append(m[2])
directors = directors or m[0].find('directors') >= 0
return mnames, directors
def _add_director_header_targets(target, env):
# Directors only work with C++ code, not C
suffix = env.subst(env['SWIGCXXFILESUFFIX'])
# For each file ending in SWIGCXXFILESUFFIX, add a new target director
# header by replacing the ending with SWIGDIRECTORSUFFIX.
for x in target[:]:
n = x.name
d = x.dir
if n[-len(suffix):] == suffix:
target.append(d.File(n[:-len(suffix)] + env['SWIGDIRECTORSUFFIX']))
def _swigEmitter(target, source, env):
swigflags = env.subst("$SWIGFLAGS", target=target, source=source)
flags = SCons.Util.CLVar(swigflags)
for src in source:
src = str(src.rfile())
mnames = None
if "-python" in flags and "-noproxy" not in flags:
if mnames is None:
mnames, directors = _find_modules(src)
if directors:
_add_director_header_targets(target, env)
python_files = [m + ".py" for m in mnames]
outdir = env.subst('$SWIGOUTDIR', target=target, source=source)
# .py files should be generated in SWIGOUTDIR if specified,
# otherwise in the same directory as the target
if outdir:
python_files = [env.fs.File(os.path.join(outdir, j)) for j in python_files]
else:
python_files = [target[0].dir.File(m) for m in python_files]
target.extend(python_files)
if "-java" in flags:
if mnames is None:
mnames, directors = _find_modules(src)
if directors:
_add_director_header_targets(target, env)
java_files = [[m + ".java", m + "JNI.java"] for m in mnames]
java_files = SCons.Util.flatten(java_files)
outdir = env.subst('$SWIGOUTDIR', target=target, source=source)
if outdir:
java_files = [os.path.join(outdir, j) for j in java_files]
java_files = list(map(env.fs.File, java_files))
def t_from_s(t, p, s, x):
return t.dir
tsm = SCons.Node._target_from_source_map
tkey = len(tsm)
tsm[tkey] = t_from_s
for jf in java_files:
jf._func_target_from_source = tkey
target.extend(java_files)
return (target, source)
def _get_swig_version(env, swig):
"""Run the SWIG command line tool to get and return the version number"""
swig = env.subst(swig)
pipe = SCons.Action._subproc(env, SCons.Util.CLVar(swig) + ['-version'],
stdin = 'devnull',
stderr = 'devnull',
stdout = subprocess.PIPE)
if pipe.wait() != 0: return
out = pipe.stdout.read()
match = re.search(r'SWIG Version\s+(\S+).*', out, re.MULTILINE)
if match:
if verbose: print "Version is:%s"%match.group(1)
return match.group(1)
else:
if verbose: print "Unable to detect version: [%s]"%out
def generate(env):
"""Add Builders and construction variables for swig to an Environment."""
c_file, cxx_file = SCons.Tool.createCFileBuilders(env)
c_file.suffix['.i'] = swigSuffixEmitter
cxx_file.suffix['.i'] = swigSuffixEmitter
c_file.add_action('.i', SwigAction)
c_file.add_emitter('.i', _swigEmitter)
cxx_file.add_action('.i', SwigAction)
cxx_file.add_emitter('.i', _swigEmitter)
java_file = SCons.Tool.CreateJavaFileBuilder(env)
java_file.suffix['.i'] = swigSuffixEmitter
java_file.add_action('.i', SwigAction)
java_file.add_emitter('.i', _swigEmitter)
if 'SWIG' not in env:
env['SWIG'] = env.Detect(swigs) or swigs[0]
env['SWIGVERSION'] = _get_swig_version(env, env['SWIG'])
env['SWIGFLAGS'] = SCons.Util.CLVar('')
env['SWIGDIRECTORSUFFIX'] = '_wrap.h'
env['SWIGCFILESUFFIX'] = '_wrap$CFILESUFFIX'
env['SWIGCXXFILESUFFIX'] = '_wrap$CXXFILESUFFIX'
env['_SWIGOUTDIR'] = r'${"-outdir \"%s\"" % SWIGOUTDIR}'
env['SWIGPATH'] = []
env['SWIGINCPREFIX'] = '-I'
env['SWIGINCSUFFIX'] = ''
env['_SWIGINCFLAGS'] = '$( ${_concat(SWIGINCPREFIX, SWIGPATH, SWIGINCSUFFIX, __env__, RDirs, TARGET, SOURCE)} $)'
env['SWIGCOM'] = '$SWIG -o $TARGET ${_SWIGOUTDIR} ${_SWIGINCFLAGS} $SWIGFLAGS $SOURCES'
def exists(env):
swig = env.get('SWIG') or env.Detect(['swig'])
return swig
# Local Variables:
# tab-width:4
# indent-tabs-mode:nil
# End:
# vim: set expandtab tabstop=4 shiftwidth=4:
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