Issue #25136: Support Apple Xcode 7's new textual SDK stub libraries.

As of Xcode 7, SDKs for Apple platforms now include textual-format stub
libraries whose file names have a .tbd extension rather than the
standard OS X .dylib extension.  The Apple compiler tool chain handles
these stub libraries transparently and the installed system shared libraries
are still .dylibs.  However, the new stub libraries cause problems for
third-party programs that support building with Apple SDKs and make
build-time decisions based on the presence or paths of system-supplied
shared libraries in the SDK.  In particular, building Python itself with
an SDK fails to find system-supplied libraries during setup.py's build of
standard library extension modules.  The solution is to have
find_library_file() in Distutils search for .tbd files, along with
the existing types (.a, .so, and .dylib).  Patch by Tim Smith.

1 files changed, 2 insertions, 2 deletions

diff --git a/Lib/distutils/ccompiler.py b/Lib/distutils/ccompiler.py
index 82fd7d5..b71d1d3 100644
--- a/Lib/distutils/ccompiler.py
+++ b/Lib/distutils/ccompiler.py
@@ -875,9 +875,9 @@ main (int argc, char **argv) {
     def library_filename(self, libname, lib_type='static',     # or 'shared'
                          strip_dir=0, output_dir=''):
         assert output_dir is not None
-        if lib_type not in ("static", "shared", "dylib"):
+        if lib_type not in ("static", "shared", "dylib", "xcode_stub"):
             raise ValueError(
-                  "'lib_type' must be \"static\", \"shared\" or \"dylib\"")
+                  "'lib_type' must be \"static\", \"shared\", \"dylib\", or \"xcode_stub\"")
         fmt = getattr(self, lib_type + "_lib_format")
         ext = getattr(self, lib_type + "_lib_extension")