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[2.7] bpo-32647: Link ctypes extension with libdl. (GH-5550) #5877

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Merged
tiran merged 1 commit into from
Feb 25, 2018
Merged

[2.7] bpo-32647: Link ctypes extension with libdl. (GH-5550) #5877

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2 changes: 2 additions & 0 deletions Misc/NEWS.d/next/Library/2018-02-05-13-31-42.bpo-32647.ktmfR_.rst
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Original file line number Diff line number Diff line change
@@ -0,0 +1,2 @@
The ctypes module used to depend on indirect linking for dlopen. The shared
extension is now explicitly linked against libdl on platforms with dl.
4 changes: 4 additions & 0 deletions setup.py
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Expand Up @@ -2149,6 +2149,10 @@ def detect_ctypes(self, inc_dirs, lib_dirs):
ext.libraries.append(ffi_lib)
self.use_system_libffi = True

if sysconfig.get_config_var('HAVE_LIBDL'):
# for dlopen, see bpo-32647
ext.libraries.append('dl')

def _detect_nis(self, inc_dirs, lib_dirs):
if host_platform in {'win32', 'cygwin', 'qnx6'}:
return None
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