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ruby-numo / numo-linalg

Linear Algebra Library for Ruby/Numo::NArray
BSD 3-Clause "New" or "Revised" License
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Add dynamic_lookup linker option for macOS and Ruby 3.1 #45

Closed yoshoku closed 1 year ago

yoshoku commented 1 year ago

Installation of Numo::Linalg fails with Xcode14 and Ruby 3.1 as follows:

$ xcodebuild -version
Xcode 14.1
Build version 14B47b
$ ruby -v
ruby 3.1.3p185 (2022-11-24 revision 1a6b16756e) [arm64-darwin21]
$ gem install numo-linalg
Fetching numo-linalg-0.1.7.gem
Building native extensions. This could take a while...
ERROR:  Error installing numo-linalg:
        ERROR: Failed to build gem native extension.

...

ld: symbol(s) not found for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make: *** [blas.bundle] Error 1

make failed, exit code 2

The cause is the same as the bug fixed in Ruby3.1.3.

https://www.ruby-lang.org/ja/news/2022/11/24/ruby-3-1-3-released/ https://bugs.ruby-lang.org/issues/18912

To fix this bug, add the -undefined dynamic_lookup option when building with macOS and Ruby 3.1.

https://github.com/ruby/ruby/pull/6440/commits/881e9c83df17f55f56c4cc2de1b7b3c31599fea4

However, since the following warning message is displayed, so I add a check for the validity of the option via the try_link method to avoid future build failures.

...

linking shared-object numo/linalg/lapack.bundle
ld: warning: -undefined dynamic_lookup may not work with chained fixups

...

Please consider this pull request for macOS users. Thank you.