[issue33347] zlibmodule undefined reference

[Irit Katriel]

Change by Irit Katriel :


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resolution:  -> out of date
stage:  -> resolved
status: pending -> closed

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[issue33347] zlibmodule undefined reference

[Irit Katriel]

Irit Katriel  added the comment:

The report only shows output for 2.7. Is this issue really relevant to 3.x?

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status: open -> pending

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[issue33347] zlibmodule undefined reference

[Martin Ni]

Martin Ni  added the comment:

Hello sir! I got exactly same issue when compile some ipk in Openwrt. Would 
tell how to add "-lz" to python-config? I am not so familiar with Python 
coding. Thanks!

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[issue33347] zlibmodule undefined reference

[Terry J. Reedy]

Change by Terry J. Reedy :


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nosy: +serhiy.storchaka, twouters
versions: +Python 3.8 -Python 3.4, Python 3.5

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[issue33347] zlibmodule undefined reference

[Lucian Cristian]

Lucian Cristian  added the comment:

it seems that python-config --libs doesn't detect -lz and appending -lz fixes 
the problem

-PYTHON_LIBS="`\"${PYTHONCONFIG}\" --libs`"
+PYTHON_LIBS="`\"${PYTHONCONFIG}\" --libs` -lz"

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[issue33347] zlibmodule undefined reference

[Lucian Cristian]

New submission from Lucian Cristian :

trying to compile a utility in Openwrt and when pip-install is selected and 
zlib is linked to python I get this:


staging_dir/hostpkg/lib/libpython2.7.a(zlibmodule.o): In function 
`PyZlib_crc32':
build_dir/hostpkg/Python-2.7.14/./Modules/zlibmodule.c:1045: undefined 
reference to `crc32'
build_dir/hostpkg/Python-2.7.14/./Modules/zlibmodule.c:1053: undefined 
reference to `crc32'
staging_dir/hostpkg/lib/libpython2.7.a(zlibmodule.o): In function 
`PyZlib_adler32':
build_dir/hostpkg/Python-2.7.14/./Modules/zlibmodule.c:1013: undefined 
reference to `adler32'
build_dir/hostpkg/Python-2.7.14/./Modules/zlibmodule.c:1021: undefined 
reference to `adler32'
staging_dir/hostpkg/lib/libpython2.7.a(zlibmodule.o): In function 
`Decomp_dealloc':
build_dir/hostpkg/Python-2.7.14/./Modules/zlibmodule.c:469: undefined reference 
to `inflateEnd'
staging_dir/hostpkg/lib/libpython2.7.a(zlibmodule.o): In function 
`Comp_dealloc':
build_dir/hostpkg/Python-2.7.14/./Modules/zlibmodule.c:459: undefined reference 
to `deflateEnd'
staging_dir/hostpkg/lib/libpython2.7.a(zlibmodule.o): In function 
`PyZlib_objcompress':
build_dir/hostpkg/Python-2.7.14/./Modules/zlibmodule.c:504: undefined reference 
to `deflate'
staging_dir/hostpkg/lib/libpython2.7.a(zlibmodule.o): In function `PyZlib_copy':
build_dir/hostpkg/Python-2.7.14/./Modules/zlibmodule.c:772: undefined reference 
to `deflateCopy'
staging_dir/hostpkg/lib/libpython2.7.a(zlibmodule.o): In function 
`PyZlib_uncopy':
build_dir/hostpkg/Python-2.7.14/./Modules/zlibmodule.c:821: undefined reference 
to `inflateCopy'
staging_dir/hostpkg/lib/libpython2.7.a(zlibmodule.o): In function 
`PyZlib_decompressobj':
build_dir/hostpkg/Python-2.7.14/./Modules/zlibmodule.c:434: undefined reference 
to `inflateInit2_'
staging_dir/hostpkg/lib/libpython2.7.a(zlibmodule.o): In function 
`PyZlib_compressobj':
build_dir/hostpkg/Python-2.7.14/./Modules/zlibmodule.c:398: undefined reference 
to `deflateInit2_'
staging_dir/hostpkg/lib/libpython2.7.a(zlibmodule.o): In function 
`PyZlib_objdecompress':
build_dir/hostpkg/Python-2.7.14/./Modules/zlibmodule.c:632: undefined reference 
to `inflate'
staging_dir/hostpkg/lib/libpython2.7.a(zlibmodule.o): In function 
`PyZlib_decompress':
build_dir/hostpkg/Python-2.7.14/./Modules/zlibmodule.c:308: undefined reference 
to `inflateInit2_'
build_dir/hostpkg/Python-2.7.14/./Modules/zlibmodule.c:335: undefined reference 
to `inflate'
build_dir/hostpkg/Python-2.7.14/./Modules/zlibmodule.c:360: undefined reference 
to `inflateEnd'
build_dir/hostpkg/Python-2.7.14/./Modules/zlibmodule.c:318: undefined reference 
to `inflateEnd'
build_dir/hostpkg/Python-2.7.14/./Modules/zlibmodule.c:344: undefined reference 
to `inflateEnd'
build_dir/hostpkg/Python-2.7.14/./Modules/zlibmodule.c:349: undefined reference 
to `inflateEnd'
build_dir/hostpkg/Python-2.7.14/./Modules/zlibmodule.c:330: undefined reference 
to `inflateEnd'
staging_dir/hostpkg/lib/libpython2.7.a(zlibmodule.o):build_dir/hostpkg/Python-2.7.14/./Modules/zlibmodule.c:365:
 more undefined references to `inflateEnd' follow
staging_dir/hostpkg/lib/libpython2.7.a(zlibmodule.o): In function 
`PyZlib_unflush':
build_dir/hostpkg/Python-2.7.14/./Modules/zlibmodule.c:892: undefined reference 
to `inflate'
build_dir/hostpkg/Python-2.7.14/./Modules/zlibmodule.c:918: undefined reference 
to `inflateEnd'
staging_dir/hostpkg/lib/libpython2.7.a(zlibmodule.o): In function 
`PyZlib_flush':
build_dir/hostpkg/Python-2.7.14/./Modules/zlibmodule.c:713: undefined reference 
to `deflate'
build_dir/hostpkg/Python-2.7.14/./Modules/zlibmodule.c:728: undefined reference 
to `deflateEnd'
staging_dir/hostpkg/lib/libpython2.7.a(zlibmodule.o): In function 
`PyZlib_compress':
build_dir/hostpkg/Python-2.7.14/./Modules/zlibmodule.c:220: undefined reference 
to `deflateInit_'
build_dir/hostpkg/Python-2.7.14/./Modules/zlibmodule.c:233: undefined reference 
to `deflateEnd'
build_dir/hostpkg/Python-2.7.14/./Modules/zlibmodule.c:250: undefined reference 
to `deflate'
build_dir/hostpkg/Python-2.7.14/./Modules/zlibmodule.c:245: undefined reference 
to `deflateEnd'
build_dir/hostpkg/Python-2.7.14/./Modules/zlibmodule.c:254: undefined reference 
to `deflateEnd'
build_dir/hostpkg/Python-2.7.14/./Modules/zlibmodule.c:265: undefined reference 
to `deflateEnd'
collect2: error: ld returned 1 exit status

python has access to zlib headers and libraries

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components: Build
messages: 315693
nosy: Lucian Cristian
priority: normal
severity: normal
status: open
title: zlibmodule undefined reference
type: compile error
versions: Python 2.7, Python 3.4, Python 3.5, Python 3.6, Python 3.7

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