/usr/share/pkgconfig/eigen3.pc from eigen3 package incorrectly claims "Cflags: -Iinclude/eigen3". This is due to broken CMakeLists.txt which, if EIGEN_INCLUDE_INSTALL_DIR hasn't been set by the user (its not set in the eigen3.SlackBuild), wrongly sets INCLUDE_INSTALL_DIRECTORY to "include/eigen3" (line 304) instead of the correct /usr/include/eigen3 path.

Two possible fixes:
1. add -DEIGEN_INCLUDE_INSTALL_DIR=/usr/include/eigen3 \ to the cmake options in the SlackBuild
2. patch the CMakeLists.txt file with something like attached patch (using -p0)

chris

Attached Files

include_path.diff.txt (315 Bytes, 21 views)

The problem has been recognized elsewhere and a fix included in a wider ranging pull request to upstream. See: https://bitbucket.org/eigen/eigen/pu...ll_prefix/diff. However, since we know that it is broken & how to fix it quickly, it would be nice not to have to wait for upstream to incorporate that pull request, issue new release etc., etc.

chris

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chris.willing deserves credit for this recent change to Slackware current not comet.berkeley...

http://www.slackware.com/changelog/c...php?cpu=x86_64

It should read:

Thu Dec 3 07:28:30 UTC 2015
...
l/eigen3-3.2.7-x86_64-2.txz: Rebuilt.
Fixed eigen3.pc include directory. Thanks to chris.willing

Thanks for mentioning it - main thing is its fixed.

chris

1 members found this post helpful.

Ooops, sorry! Thanks to chris.willing for that fix. I guess I got the cxxxx.xxxxxxx usernames mixed up.