[issue15047] Cygwin install (regen) problem

[STINNER Victor]

STINNER Victor  added the comment:

No activity since 2012, I close the issue.

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nosy: +vstinner
resolution:  -> out of date
stage: patch review -> resolved
status: open -> closed

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[issue15047] Cygwin install (regen) problem

[Yaakov (Cygwin Ports)]

Yaakov (Cygwin Ports)  added the comment:

I use obcaseinsensitive=0, hence I didn't see this.  Would that be an option 
for you?

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[issue15047] Cygwin install (regen) problem

[Jason Tishler]

Jason Tishler  added the comment:

The problem is due to Cygwin's automatic ".exe" extension handling. See the 
attached patch (i.e., code comment) for the details. Is this patch acceptable?

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keywords: +patch
stage:  -> patch review
type:  -> behavior
Added file: http://bugs.python.org/file26009/3.2.3-extension.patch

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[issue15047] Cygwin install (regen) problem

[Jason Tishler]

New submission from Jason Tishler :

The Cygwin build is failing during make install -- specifically, during the 
regen step:

[snip]
mkdir 
/home/jt/src/cygwin/cygwin-packages/1.7/python3-test/python-3.2.3-1/src/Python-3.2.3/Lib/plat-cygwin
cp 
/home/jt/src/cygwin/cygwin-packages/1.7/python3-test/python-3.2.3-1/src/Python-3.2.3/Lib/plat-generic/regen
 
/home/jt/src/cygwin/cygwin-packages/1.7/python3-test/python-3.2.3-1/src/Python-3.2.3/Lib/plat-cygwin/regen
export PATH; PATH="`pwd`:$PATH"; \
export PYTHONPATH; PYTHONPATH="`pwd`/Lib"; \
export DYLD_FRAMEWORK_PATH; DYLD_FRAMEWORK_PATH="`pwd`"; \
export EXE; EXE=".exe"; \
cd 
/home/jt/src/cygwin/cygwin-packages/1.7/python3-test/python-3.2.3-1/src/Python-3.2.3/Lib/plat-cygwin;
  ./regen
python$EXE ../../Tools/scripts/h2py.py -i '(u_long)' /usr/include/netinet/in.h
Could not find platform independent libraries 
Could not find platform dependent libraries 
Consider setting $PYTHONHOME to [:]
Fatal Python error: Py_Initialize: Unable to get the locale encoding
ImportError: No module named encodings
./regen: line 3:  2976 Aborted (core dumped) python$EXE 
../../Tools/scripts/h2py.py -i '(u_long)' /usr/include/netinet/in.h
[snip]

Note that I seem to be running into the same or similar problem as the 
following:

http://bugs.python.org/issue3626#msg72415

I was able to workaround the core dump problem with the following patch:

diff -u Python-2.6.5.orig/Makefile.pre.in Python-2.6.5/Makefile.pre.in
--- Python-2.6.5.orig/Makefile.pre.in   2009-12-24 09:19:38.0 -0500
+++ Python-2.6.5/Makefile.pre.in2010-04-13 17:05:04.368555900 -0400
@@ -910,7 +910,7 @@
mkdir $(srcdir)/Lib/$(PLATDIR)
cp $(srcdir)/Lib/plat-generic/regen $(srcdir)/Lib/$(PLATDIR)/regen
export PATH; PATH="`pwd`:$$PATH"; \
-   export PYTHONPATH; PYTHONPATH="`pwd`/Lib"; \
+   export PYTHONPATH; PYTHONPATH="$(srcdir)/Lib"; \
export DYLD_FRAMEWORK_PATH; DYLD_FRAMEWORK_PATH="`pwd`"; \
export EXE; EXE="$(BUILDEXE)"; \
cd $(srcdir)/Lib/$(PLATDIR); $(RUNSHARED) ./regen

Note that I'm building outside of the source tree, so when the original version 
sets PYTHONPATH to the following:

"`pwd`/Lib"

it was guaranteed to point to a nonexistent directory.

Unfortunately, now the build fails as follows:

[snip]
mkdir 
/home/jt/src/cygwin/cygwin-packages/1.7/python3-test/python-3.2.3-1/src/Python-3.2.3/Lib/plat-cygwin
cp 
/home/jt/src/cygwin/cygwin-packages/1.7/python3-test/python-3.2.3-1/src/Python-3.2.3/Lib/plat-generic/regen
 
/home/jt/src/cygwin/cygwin-packages/1.7/python3-test/python-3.2.3-1/src/Python-3.2.3/Lib/plat-cygwin/regen
export PATH; PATH="`pwd`:$PATH"; \
export PYTHONPATH; 
PYTHONPATH="/home/jt/src/cygwin/cygwin-packages/1.7/python3-test/python-3.2.3-1/src/Python-3.2.3/Lib";
 \
export DYLD_FRAMEWORK_PATH; DYLD_FRAMEWORK_PATH="`pwd`"; \
export EXE; EXE=".exe"; \
cd 
/home/jt/src/cygwin/cygwin-packages/1.7/python3-test/python-3.2.3-1/src/Python-3.2.3/Lib/plat-cygwin;
  ./regen
python$EXE ../../Tools/scripts/h2py.py -i '(u_long)' /usr/include/netinet/in.h
Could not find platform independent libraries 
Could not find platform dependent libraries 
Consider setting $PYTHONHOME to [:]
Traceback (most recent call last):
  File 
"/home/jt/src/cygwin/cygwin-packages/1.7/python3-test/python-3.2.3-1/src/Python-3.2.3/Lib/sysconfig.py",
 line 334, in _init_posix
_parse_makefile(makefile, vars)
  File 
"/home/jt/src/cygwin/cygwin-packages/1.7/python3-test/python-3.2.3-1/src/Python-3.2.3/Lib/sysconfig.py",
 line 220, in _parse_makefile
with open(filename, errors="surrogateescape") as f:
IOError: [Errno 2] No such file or directory: 
'/usr/lib/python3.2/config-3.2m/Makefile'
[snip]

AFAICT, the problem is when regen runs, python thinks it is running out of an 
installation directory and not a build directory.

Does anyone know how to convince python to think it is running out its build 
directory even though it is being found in the PATH.  If not, does anyone have 
any other suggestions on how to resolve this problem?

--
components: Build
messages: 162634
nosy: jlt63, yselkowitz
priority: normal
severity: normal
status: open
title: Cygwin install (regen) problem
versions: Python 3.2

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