New submission from Andreas K. Hüttel <huet...@gmail.com>: Hi. I have been trying to install Python on a (well prototype of a) risc-v multilib Gentoo system, where the system library directory is /usr/lib64/lp64d (!).
See as reference for the directories https://www.sifive.com/blog/all-aboard-part-5-risc-v-multilib Python as is builds and installs fine but the results are pretty much unuseable. Symptoms are "/usr/lib64/lib64/lp64d/python3.6/site-packages" directory name and distutils installs unable to find Python.h (it is correctly installed in /usr/include/..., but distutils passes /usr/lib64/include as include path). I've tracked this down to bad values in sys.base_prefix and sys.exec_prefix: >>> sys.base_prefix '/usr/lib/python-exec/python3.6/../../../lib64' Even if I set PYTHONHOME=/usr , I get '/usr/lib64' The fix, specific for this directory layout, is to have one more directory component stripped in Modules/getpath.c , see patch below. With this I have been able to install Python with a normal-looking directory layout, and distutils things install fine. Posting this here so it gets your attention, and hoping that you're better in coming up with a general solution than I am... probably the number of components stripped should depend on the number of slashes in the library path, e.g., "lib" versus "lib64/lp64d" diff -ruN Python-3.6.8.orig/Modules/getpath.c Python-3.6.8/Modules/getpath.c --- Python-3.6.8.orig/Modules/getpath.c 2018-12-23 22:37:14.000000000 +0100 +++ Python-3.6.8/Modules/getpath.c 2019-04-21 01:05:35.127440301 +0200 @@ -796,6 +796,7 @@ if (pfound > 0) { reduce(prefix); reduce(prefix); + reduce(prefix); /* The prefix is the root directory, but reduce() chopped * off the "/". */ if (!prefix[0]) @@ -808,6 +809,7 @@ reduce(exec_prefix); reduce(exec_prefix); reduce(exec_prefix); + reduce(exec_prefix); if (!exec_prefix[0]) wcscpy(exec_prefix, separator); } Thanks. ---------- components: Build messages: 340667 nosy: Andreas K. Hüttel priority: normal severity: normal status: open title: building for riscv multilib (patch attached) type: enhancement versions: Python 3.8 _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue36699> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
