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# Copyright 2015 MongoDB Inc.
#
# 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 SCons
import subprocess
def _detect(env):
try:
abidw = env['ABIDW']
if not abidw:
return None
return abidw
except KeyError:
pass
return env.WhereIs('abidw')
def generate(env):
class AbilinkNode(SCons.Node.FS.File):
def __init__(self, name, directory, fs):
SCons.Node.FS.File.__init__(self, name, directory, fs)
def get_contents(self):
if not self.rexists():
return ''
fname = self.rfile().abspath
contents = None
try:
# TODO: If there were python bindings for libabigail, we
# could avoid the shell out (and probably be faster, as we
# could get exactly the information we want).
contents = subprocess.check_output([env.subst('$ABIDW'), fname])
except subprocess.CalledProcessError, e:
# ABIDW sometimes fails. In that case, log an error
# and fall back to the normal contents
print "WARNING: ABIDW failed for target %s, please file a bug report" % fname
try:
contents = open(fname, "rb").read()
except EnvironmentError, e:
if not e.filename:
e.filename = fname
raise
return contents
def get_content_hash(self):
return SCons.Util.MD5signature(self.get_contents())
env['ABIDW'] = _detect(env)
def ShlibNode(env, name, directory = None, create = 1):
return env.fs._lookup(env.subst(name), directory, AbilinkNode, create)
env.AddMethod(ShlibNode, 'ShlibNode')
def shlib_target_factory(arg):
return env.ShlibNode(arg)
env['BUILDERS']['SharedLibrary'].target_factory = shlib_target_factory
env['BUILDERS']['LoadableModule'].target_factory = shlib_target_factory
def exists(env):
result = _detect(env) != None
return result
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