Cannot install/build any Python version on macOS High Sierra

[cjbischoff]

Description

• Platform information: OS X 10.13.6 using python-build 20180424

• OS architecture: Darwin platform.local 17.7.0 Darwin Kernel Version 17.7.0: Wed Oct 10 23:06:14 PDT 2018; root:xnu-4570.71.13~1/RELEASE_X86_64 x86_64 & i386

• pyenv version: pyenv 1.2.8

• Python version: 3.6.7

• C Compiler information:

  Apple LLVM version 10.0.0 (clang-1000.11.45.5)
  Target: x86_64-apple-darwin17.7.0
  Thread model: posix
  InstalledDir: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin
  

• Please attach verbose build log as gist :https://gist.github.com/cjbischoff/7a6e742f489e671f670f88528e8c1855

[adonig]

Same problem here on OS X 10.14.1 Mojave. Cannot build any Python version. Build process fails with missing symbols even after installing the additional SDK headers and reinstalling binutils :-(

EDIT: Removing binutils solved the problem for me: brew remove binutils

[mmerickel]

EDIT: Removing binutils solved the problem for me: brew remove binutils

This also worked for me.

[ryan-gi]

EDIT: Removing binutils solved the problem for me: brew remove binutils

Fantastic. This also worked for me.

[socketbox]

Same problem here on OS X 10.14.1 Mojave. Cannot build any Python version. Build process fails with missing symbols even after installing the additional SDK headers and reinstalling binutils :-(

EDIT: Removing binutils solved the problem for me: brew remove binutils

Very interested in how @adonig came to discover that this was the problem. Could you give some insight as to how you tracked the issue back to binutils? I had thought it was an issue with flags being passed to the "native" ld (ie. the one at /usr/bin/ld).

[fpatz]

Root cause for this is that the system ar is shadowed by binutils. The libpythonX.Ym.a produced by binutils' ar cannot be used for linking. Verified by building with AR=/usr/bin/ar. I'd suggest explicitly setting AR for macOS builds or at least placing a hint in the installation instructions (... or marking binutils incompatible with pyenv, if that can be done with Homebrew?).

[dmhenry]

@fpatz, I've seen references to building with AR=/usr/bin/ar in other places as well, but I'm not clear on how to do that. Can you tell me? I'm new to Python and trying to figure out the tooling. I'm trying to pyenv install 3.6.8. Can I pass this here somehow? Thanks in advance!

[fpatz]

Simply prefix the command: AR=/usr/bin/env pyenv install .... This sets AR for that invocation of pyenv. Or (temporarily) brew uninstall binutils, if that is where ar is coming from (you can check with which ar -- if it says /usr/local/bin/ar you probably have binutils installed).

[cjbischoff]

brew remove binutils that worked also

[DavidAntliff]

FWIW, AR=/usr/bin/ar pyenv install 3.7.2 worked for me (avoided having to uninstall binutils).

[purp]

AR=... was not successful for me.

My steps:

• brew uninstall binutils
• download and install Mac OS 10.14 command line tools for Xcode 10.2 manually (for some reason xcode-select --install didn't do the magic for me)
• sudo installer -pkg /Library/Developer/CommandLineTools/Packages/macOS_SDK_headers_for_macOS_10.14.pkg -target / after installing command line tools, per Common Build Problems

All better now.

[wulameng]

Same problem here on OS X 10.14.1 Mojave. Cannot build any Python version. Build process fails with missing symbols even after installing the additional SDK headers and reinstalling binutils :-(

EDIT: Removing binutils solved the problem for me: brew remove binutils

THANKS BRO,This also worked for me. :)👍👍👍👍👍

[haydenk]

Uninstalling binutils works on macOS 10.15 (Catalina) as well, were we do not have the macOS_SDK_headers_for_macOS_10.14.pkg available.

EDIT Also what @DavidAntliff mentioned also worked.

[XxUnkn0wnxX]

for Catalina the headers are located somewhere else noted here: https://bbqsoftwares.com/blog/xdebug-catalina-issue

since the "macOS_SDK_headers_for_macOS_10.15" doesnt exsist & /usr/include has been removed
the new location is /Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk/usr/include as of xcode 11.

i'm also getting the issue ModuleNotFoundError: No module named 'pyexpat'
Log: python-build.20200103024154.82234.log.zip

[matzeschmo]

Thanks a lot @fpatz. Had the same problem today with MacOS Mojave (10.14.4).
export AR=/usr/bin/ar solved the problem and installing with pyenv install 3.8.2 finally worked! 👍

[weaming]

Same for #2441 , incorrect ar, aha