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Fallback to Pure Python if Compilation fails #76

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merged 1 commit into from Sep 12, 2017
Merged

Fallback to Pure Python if Compilation fails #76

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62 changes: 7 additions & 55 deletions setup.py
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Expand Up @@ -204,63 +204,16 @@ def build_extensions(self):
self.check_extensions_list(self.extensions)
for ext in self.extensions:
with_ext = self.distribution.ext_status(ext)
if with_ext is None:
with_ext = self.check_extension_availability(ext)
if not with_ext:
if with_ext is not None and not with_ext:
continue
if with_cython:
ext.sources = self.cython_sources(ext.sources, ext)
self.build_extension(ext)

def check_extension_availability(self, ext):
cache = os.path.join(self.build_temp, 'check_%s.out' % ext.feature_name)
if not self.force and os.path.isfile(cache):
data = open(cache).read().strip()
if data == '1':
return True
elif data == '0':
return False
mkpath(self.build_temp)
src = os.path.join(self.build_temp, 'check_%s.c' % ext.feature_name)
open(src, 'w').write(ext.feature_check)
log.info("checking if %s is compilable" % ext.feature_name)
try:
[obj] = self.compiler.compile([src],
macros=ext.define_macros+[(undef,) for undef in ext.undef_macros],
include_dirs=ext.include_dirs,
extra_postargs=(ext.extra_compile_args or []),
depends=ext.depends)
except CompileError:
log.warn("")
log.warn("%s is not found or a compiler error: forcing --%s"
% (ext.feature_name, ext.neg_option_name))
log.warn("(if %s is installed correctly, you may need to"
% ext.feature_name)
log.warn(" specify the option --include-dirs or uncomment and")
log.warn(" modify the parameter include_dirs in setup.cfg)")
open(cache, 'w').write('0\n')
return False
prog = 'check_%s' % ext.feature_name
log.info("checking if %s is linkable" % ext.feature_name)
try:
self.compiler.link_executable([obj], prog,
output_dir=self.build_temp,
libraries=ext.libraries,
library_dirs=ext.library_dirs,
runtime_library_dirs=ext.runtime_library_dirs,
extra_postargs=(ext.extra_link_args or []))
except LinkError:
log.warn("")
log.warn("%s is not found or a linker error: forcing --%s"
% (ext.feature_name, ext.neg_option_name))
log.warn("(if %s is installed correctly, you may need to"
% ext.feature_name)
log.warn(" specify the option --library-dirs or uncomment and")
log.warn(" modify the parameter library_dirs in setup.cfg)")
open(cache, 'w').write('0\n')
return False
open(cache, 'w').write('1\n')
return True
try:
self.build_extension(ext)
except (CompileError, LinkError):
if with_ext is not None:
raise
log.warn("Error compiling module, falling back to pure Python")


class bdist_rpm(_bdist_rpm):
Expand Down Expand Up @@ -342,4 +295,3 @@ def run(self):
distclass=Distribution,
cmdclass=cmdclass,
)