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Greetings, |
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|
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after having decided to globally set the "threads" USE flag I get the |
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following: |
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|
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These are the packages that would be merged, in order: |
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|
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Calculating dependencies... done! |
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|
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!!! The ebuild selected to satisfy "sci-libs/hdf5[mpi]" has unmet requirements. |
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- sci-libs/hdf5-1.10.5-r1::gentoo USE="fortran hl mpi threads zlib -cxx -debug -examples -szip -unsupported" ABI_X86="(64)" |
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|
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The following REQUIRED_USE flag constraints are unsatisfied: |
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!unsupported? ( threads? ( !mpi !fortran !hl ) ) |
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|
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The above constraints are a subset of the following complete expression: |
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!unsupported? ( at-most-one-of ( cxx mpi ) threads? ( !cxx !mpi !fortran !hl ) ) |
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|
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(dependency required by "sci-libs/flann-1.9.1-r3::gentoo[mpi]" [installed]) |
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... |
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|
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Since USE flag "mpi" is required by at least one other package, it seems |
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I have exactly two options: |
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|
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- Set "-threads" for this package thus leaving everything as is, |
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|
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- set "unsupported" for this package, without really knowing what the |
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consequences would be. |
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|
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Asking "equery" isn't really enlighting in this case, is it? |
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|
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$ equery --no-color --no-pipe uses sci-libs/hdf5 |
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[ Legend : U - final flag setting for installation] |
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[ : I - package is installed with flag ] |
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[ Colors : set, unset ] |
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* Found these USE flags for sci-libs/hdf5-1.10.5-r1: |
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U I |
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- - cxx : Build support for C++ (bindings, extra libraries, code |
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generation, ...) |
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- - debug : Enable extra debug codepaths, like asserts and extra output. |
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If you want to get meaningful backtraces see https://wiki.ge |
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ntoo.org/wiki/Project:Quality_Assurance/Backtraces |
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- - examples : Install examples, usually source code |
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+ + fortran : Add support for fortran |
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+ + hl : Enable high level API |
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(https://support.hdfgroup.org/HDF5/doc/HL/index.html) |
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+ + mpi : Add MPI (Message Passing Interface) layer to the apps that |
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support it |
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- - szip : Use the szip compression library |
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+ - threads : Add threads support for various packages. Usually pthreads |
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- - unsupported : Enable unsupported combinations of configuration options |
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+ + zlib : Add support for zlib (de)compression |
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$ |
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|
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Anybody having an educated guess what the risk would be? Is it save to |
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set a USE flag even if its name is "unsupported"? |
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|
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Sincerely, |
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Rainer |
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