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# Subclasses disutils.command.build_ext,
# replacing it with a SIP version that compiles .sip -> .cpp
# before calling the original build_ext command.
# Written by Giovanni Bajo <rasky at develer dot com>
# Based on Pyrex.Distutils, written by Graham Fawcett and Darrel Gallion.
import distutils.command.build_ext
from distutils.dep_util import newer, newer_group
import os
import sys
def replace_suffix(path, new_suffix):
return os.path.splitext(path)[0] + new_suffix
class build_ext (distutils.command.build_ext.build_ext):
description = "Compiler SIP descriptions, then build C/C++ extensions (compile/link to build directory)"
def _get_sip_output_list(self, sbf):
"""
Parse the sbf file specified to extract the name of the generated source
files. Make them absolute assuming they reside in the temp directory.
"""
for L in file(sbf):
key, value = L.split("=", 1)
if key.strip() == "sources":
out = []
for o in value.split():
out.append(os.path.join(self.build_temp, o))
return out
raise RuntimeError, "cannot parse SIP-generated '%s'" % sbf
def _find_sip(self):
import sipconfig
cfg = sipconfig.Configuration()
return cfg.sip_bin
def _sip_inc_dir(self):
import sipconfig
cfg = sipconfig.Configuration()
return cfg.sip_inc_dir
def swig_sources (self, sources, extension=None):
if not self.extensions:
return
# Add the SIP include directory to the include path
if extension is not None:
extension.include_dirs.append(self._sip_inc_dir())
depends = extension.depends
else:
# pre-2.4 compatibility
self.include_dirs.append(self._sip_inc_dir())
depends = [] # ?
# Filter dependencies list: we are interested only in .sip files,
# since the main .sip files can only depend on additional .sip
# files. For instance, if a .h changes, there is no need to
# run sip again.
depends = [f for f in depends if os.path.splitext(f)[1] == ".sip"]
# Create the temporary directory if it does not exist already
if not os.path.isdir(self.build_temp):
os.makedirs(self.build_temp)
# Collect the names of the source (.sip) files
sip_sources = []
sip_sources = [source for source in sources if source.endswith('.sip')]
other_sources = [source for source in sources if not source.endswith('.sip')]
generated_sources = []
sip_bin = self._find_sip()
for sip in sip_sources:
# Use the sbf file as dependency check
sipbasename = os.path.basename(sip)
sbf = os.path.join(self.build_temp, replace_suffix(sipbasename, ".sbf"))
if newer_group([sip]+depends, sbf) or self.force:
self._sip_compile(sip_bin, sip, sbf)
out = self._get_sip_output_list(sbf)
generated_sources.extend(out)
return generated_sources + other_sources
def _sip_compile(self, sip_bin, source, sbf):
self.spawn([sip_bin,
"-c", self.build_temp,
"-b", sbf,
source])
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