generate-posix-vars failed when building Python 2.7.14 on Linux #77555

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1. piotrdobrogost commented on Apr 27, 2018

   

   piotrdobrogostmannequin

   on Apr 27, 2018

   MannequinAuthor

   More actions

   When building Python 2.7.14 on Fedora 28 I get the following error:

   [piotr@demon]/tmp/Python-2.7.14% make
   (…)
   ./python -E -S -m sysconfig --generate-posix-vars ;\
   if test $? -ne 0 ; then \
   echo "generate-posix-vars failed" ; \
   rm -f ./pybuilddir.txt ; \
   exit 1 ; \
   fi
   /bin/sh: line 5: 25857 Segmentation fault (core dumped) ./python -E -S -m sysconfig --generate-posix-vars
   generate-posix-vars failed
   make[2]: *** [Makefile:514: pybuilddir.txt] Error 1
   make[2]: Leaving directory '/tmp/Python-2.7.14'
   make[1]: *** [Makefile:444: build_all_generate_profile] Error 2
   make[1]: Leaving directory '/tmp/Python-2.7.14'
   make: *** [Makefile:429: profile-opt] Error 2

   Running problematic command alone I get this:

   [piotr@demon]/tmp/Python-2.7.14% ./python -E -S -m sysconfig --generate-posix-vars
   Could not find platform dependent libraries <exec_prefix>
   Consider setting $PYTHONHOME to <prefix>[:<exec_prefix>]
   zsh: segmentation fault (core dumped) ./python -E -S -m sysconfig --generate-posix-vars

   I found somehow related https://bugs.python.org/issue21166 with excellent explanation by Ned Deily (https://bugs.python.org/msg225217) but that issue is supposedly fixed.

   I have Python 3.6.5 installed at /usr/bin/python3 and Python 2.7.14 installed at /usr/bin/python{2} – both from RPM packages.

   I have Python 2.7.13 installed at /usr/local/bin/python{2} – built from source.

   Running which python returns "/usr/local/bin/python".

   Trying to isolate configuration and build by prefixing commands with
   PATH=/usr/bin:/usr/sbin LIBRARY_PATH= LD_LIBRARY_PATH= (…)
   does not help.
2. piotrdobrogost

   added

   buildThe build process and cross-buildThe build process and cross-build

   on Apr 27, 2018
3. tgrigg commented on Apr 27, 2018

   

   tgriggmannequin

   on Apr 27, 2018

   Mannequin

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   I beleive this is caused by https://bugs.python.org/issue27987 in combination with GCC 8.

   Florian Weimer proposed a patch which is included in the Fedora build:

   https://src.fedoraproject.org/cgit/rpms/python2.git/tree/00293-fix-gc-alignment.patch

   It would be nice if this was fixed for 2.7.15 so that it would build out of the box with GCC 8 on x86_64-linux-gnu.
4. benjaminp commented on Apr 29, 2018

   

   benjaminp

   on Apr 29, 2018

   Contributor

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   New changeset 0b91f8a by Benjamin Peterson (Florian Weimer) in branch '2.7':
   Indicate that _PyGC_Head is only 8-byte aligned. (closes bpo-33374)
   0b91f8a
5. benjaminp

   closed this as completedon Apr 29, 2018
6. PeterSennaTschudin commented on Jul 4, 2018

   

   PeterSennaTschudinmannequin

   on Jul 4, 2018

   Mannequin

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   I got here when trying to build Yocto Sumo on Fedora 28. python_native build was failing with a segfault. Here is how I fixed it with no elegance intended:

   $ git clone https://github.com/python/cpython.git
   $ cd cpython/
   $ git show 0b91f8a668201fc58fa732b8acc496caedfdbae0 > /tmp/gcc8-fix.patch
   
   $ cd $HOME/poky-sumo/meta/recipes-devtools/python
   $ cp /tmp/gcc8-fix.patch python-native/

   $ git diff python-native_2.7.14.bb
   diff --git a/meta/recipes-devtools/python/python-native_2.7.14.bb b/meta/recipes-devtools/python/python-native_2.7.14.bb
   index 7c491fa3e0..e9a8c14e9c 100644
   --- a/meta/recipes-devtools/python/python-native_2.7.14.bb
   +++ b/meta/recipes-devtools/python/python-native_2.7.14.bb
   @@ -16,6 +16,7 @@ SRC_URI += "\
                file://builddir.patch \
                file://parallel-makeinst-create-bindir.patch \
                file://revert_use_of_sysconfigdata.patch \
   +            file://gcc8-fix.patch \
               "
    
    S = "${WORKDIR}/Python-${PV}"
7. ezio-melotti

   transferred this issue fromon Apr 10, 2022