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-rw-r--r--setuptools/command/build_ext.py48
1 files changed, 26 insertions, 22 deletions
diff --git a/setuptools/command/build_ext.py b/setuptools/command/build_ext.py
index 92e4a189..1caf8c81 100644
--- a/setuptools/command/build_ext.py
+++ b/setuptools/command/build_ext.py
@@ -16,15 +16,32 @@ try:
except ImportError:
_build_ext = _du_build_ext
-try:
- # Python 2.7 or >=3.2
- from sysconfig import _CONFIG_VARS
-except ImportError:
- from distutils.sysconfig import get_config_var
+from distutils.sysconfig import get_config_var
+
+get_config_var("LDSHARED") # make sure _config_vars is initialized
+del get_config_var
+from distutils.sysconfig import _config_vars as _CONFIG_VARS
+
+
+def _customize_compiler_for_shlib(compiler):
+ if sys.platform == "darwin":
+ # building .dylib requires additional compiler flags on OSX; here we
+ # temporarily substitute the pyconfig.h variables so that distutils'
+ # 'customize_compiler' uses them before we build the shared libraries.
+ tmp = _CONFIG_VARS.copy()
+ try:
+ # XXX Help! I don't have any idea whether these are right...
+ _CONFIG_VARS['LDSHARED'] = (
+ "gcc -Wl,-x -dynamiclib -undefined dynamic_lookup")
+ _CONFIG_VARS['CCSHARED'] = " -dynamiclib"
+ _CONFIG_VARS['SO'] = ".dylib"
+ customize_compiler(compiler)
+ finally:
+ _CONFIG_VARS.clear()
+ _CONFIG_VARS.update(tmp)
+ else:
+ customize_compiler(compiler)
- get_config_var("LDSHARED") # make sure _config_vars is initialized
- del get_config_var
- from distutils.sysconfig import _config_vars as _CONFIG_VARS
have_rtld = False
use_stubs = False
@@ -124,20 +141,7 @@ class build_ext(_build_ext):
compiler = self.shlib_compiler = new_compiler(
compiler=self.compiler, dry_run=self.dry_run, force=self.force
)
- if sys.platform == "darwin":
- tmp = _CONFIG_VARS.copy()
- try:
- # XXX Help! I don't have any idea whether these are right...
- _CONFIG_VARS['LDSHARED'] = (
- "gcc -Wl,-x -dynamiclib -undefined dynamic_lookup")
- _CONFIG_VARS['CCSHARED'] = " -dynamiclib"
- _CONFIG_VARS['SO'] = ".dylib"
- customize_compiler(compiler)
- finally:
- _CONFIG_VARS.clear()
- _CONFIG_VARS.update(tmp)
- else:
- customize_compiler(compiler)
+ _customize_compiler_for_shlib(compiler)
if self.include_dirs is not None:
compiler.set_include_dirs(self.include_dirs)