New submission from Martijn Pieters <m...@python.org>:
This issue goes back a long time. The libreadline handling in the modules
setup.py doesn't add the location of the readline library to the runtime
library paths:
self.add(Extension('readline', ['readline.c'],
library_dirs=['/usr/lib/termcap'],
extra_link_args=readline_extra_link_args,
libraries=readline_libs))
This requires the readline library to have been added to a traditional location
or has taken care of either ld.so.conf or LD_LIBRARY_PATH.
I'm building a series of Python binaries with a custom `--prefix` where I also
installed a local copy of readline (so both are configured with the same
prefix), and while setup.py finds the correct library, importing the compiled
result fails because no `RPATH` is set.
This could be fixed by adding the parent path of the located `libreadline`
shared library as a `runtime_library_dirs` entry:
readline_libdirs = None
if do_readline not in self.lib_dirs:
readline_libdirs = [
os.path.abspath(os.path.dirname(do_readline))
]
self.add(Extension('readline', ['readline.c'],
library_dirs=['/usr/lib/termcap'],
extra_link_args=readline_extra_link_args,
runtime_library_dirs=readline_libdirs,
libraries=readline_libs))
----------
components: Extension Modules
messages: 369054
nosy: mjpieters
priority: normal
severity: normal
status: open
title: Building with a libreadline.so located outside the ld.so.conf search
path fails
type: compile error
versions: Python 3.7, Python 3.8, Python 3.9
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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue40647>
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