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cannot install brotli bindings on Python 2.7 anymore #343

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opened 2026-01-29 20:42:19 +00:00 by claunia · 7 comments
claunia commented 2026-01-29 20:42:19 +00:00
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Originally created by @jjnurminen on GitHub (Sep 25, 2020).

Hi,

I cannot install brotli from PyPi any more, though seemingly it should still support Python 2.7. I can reproduce by creating a conda environment:

conda create -n py27 python=2.7

Saying pip install brotli first tells me to install Visual C++ from http://aka.ms/vcpython27. However, after installing that and trying again, I get the following during compilation:

 _brotli.obj : warning LNK4197: export 'init_brotli' specified multiple times; using first specification
       Creating library bin\temp.win-amd64-2.7\Release\c/common\_brotli.lib and object bin\temp.win-amd64-2.7\Release\c/common\_brotli.exp
    encode.obj : error LNK2001: unresolved external symbol _tzcnt_u64
    static_dict.obj : error LNK2001: unresolved external symbol _tzcnt_u64
    backward_references.obj : error LNK2019: unresolved external symbol _tzcnt_u64 referenced in function FindMatchLengthWithLimit

I'm on Windows 10, 64-bit Python. Any hints are appreciated.

Originally created by @jjnurminen on GitHub (Sep 25, 2020). Hi, I cannot install brotli from PyPi any more, though seemingly it should still support Python 2.7. I can reproduce by creating a conda environment: conda create -n py27 python=2.7 Saying `pip install brotli` first tells me to install Visual C++ from http://aka.ms/vcpython27. However, after installing that and trying again, I get the following during compilation: ``` _brotli.obj : warning LNK4197: export 'init_brotli' specified multiple times; using first specification Creating library bin\temp.win-amd64-2.7\Release\c/common\_brotli.lib and object bin\temp.win-amd64-2.7\Release\c/common\_brotli.exp encode.obj : error LNK2001: unresolved external symbol _tzcnt_u64 static_dict.obj : error LNK2001: unresolved external symbol _tzcnt_u64 backward_references.obj : error LNK2019: unresolved external symbol _tzcnt_u64 referenced in function FindMatchLengthWithLimit ``` I'm on Windows 10, 64-bit Python. Any hints are appreciated.
claunia commented 2026-01-29 20:42:20 +00:00
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@jjnurminen commented on GitHub (Sep 25, 2020):

Seems to be related to the fact that the Windows Python 2.7/AMD64 binary wheel is not on PyPi any more, so pip tries to build it from source (and fails).

@jjnurminen commented on GitHub (Sep 25, 2020): Seems to be related to the fact that the Windows Python 2.7/AMD64 binary wheel is not on PyPi any more, so pip tries to build it from source (and fails).
claunia commented 2026-01-29 20:42:21 +00:00
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@eustas commented on GitHub (Sep 27, 2020):

The problem has been recently fixed. Soon I will make 1.0.10 release to fix this problem in PyPi

@eustas commented on GitHub (Sep 27, 2020): The problem has been recently fixed. Soon I will make 1.0.10 release to fix this problem in PyPi
claunia commented 2026-01-29 20:42:21 +00:00
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@jjnurminen commented on GitHub (Sep 28, 2020):

@eustas sounds good, thanks.

@jjnurminen commented on GitHub (Sep 28, 2020): @eustas sounds good, thanks.
claunia commented 2026-01-29 20:42:22 +00:00
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@Antoine-Sc commented on GitHub (Oct 13, 2020):

Hi,

I have the same problem by setting up esp-idf.
How did you fix the problem ? Which version of brotli ?

@Antoine-Sc commented on GitHub (Oct 13, 2020): Hi, I have the same problem by setting up esp-idf. How did you fix the problem ? Which version of brotli ?
claunia commented 2026-01-29 20:42:22 +00:00
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@jjnurminen commented on GitHub (Oct 13, 2020):

@Antoine-Sc if you install brotli 1.0.7, you will still get the binary wheel.

@jjnurminen commented on GitHub (Oct 13, 2020): @Antoine-Sc if you install brotli 1.0.7, you will still get the binary wheel.
claunia commented 2026-01-29 20:42:22 +00:00
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@Antoine-Sc commented on GitHub (Oct 13, 2020):

Ok. It did not work for me. I'm trying to find out why

@Antoine-Sc commented on GitHub (Oct 13, 2020): Ok. It did not work for me. I'm trying to find out why
claunia commented 2026-01-29 20:42:23 +00:00
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@GitMensch commented on GitHub (Jun 21, 2024):

brotli 1.1 is out so this may be closed-fixed; if this issue is unexpectedly not fixed by this I'd suggest to close-not-planned as Python2 is much less relevant in 2024 than it was in 2020 and it would possibly useful to drop anything that is explicit done to support Python2.

@GitMensch commented on GitHub (Jun 21, 2024): brotli 1.1 is out so this may be closed-fixed; if this issue is unexpectedly not fixed by this I'd suggest to close-not-planned as Python2 is much less relevant in 2024 than it was in 2020 and it would possibly useful to drop anything that is explicit done to support Python2.
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Reference: starred/brotli#343
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