Bug 710986

Summary:	sci-libs/hdf5 please allow both mpi and cxx USE under an "unsupported" USE
Product:	Gentoo Linux	Reporter:	Alessandro Barbieri <lssndrbarbieri>
Component:	Current packages	Assignee:	Gentoo Science Related Packages <sci>
Status:	RESOLVED FIXED
Severity:	enhancement	CC:	jstein
Priority:	Normal	Keywords:	PullRequest
Version:	unspecified
Hardware:	All
OS:	Linux
See Also:	https://bugs.gentoo.org/show_bug.cgi?id=392683 https://github.com/gentoo/gentoo/pull/14821
Whiteboard:
Package list:		Runtime testing required:	---

Description Alessandro Barbieri 2020-02-27 18:50:22 UTC

from:++
https://support.hdfgroup.org/HDF5/hdf5-quest.html#p5thread

Can you run Parallel HDF5 and the thread-safe feature together ? What about Parallel HDF5 and C++?

    By default, you cannot build either Parallel HDF5 with C++ or Parallel HDF5 with the thread-safe feature. You will receive a configure error if you try either of these combinations.

    Checks were added to the configure to disallow these combinations, as they are not tested and may fail.

    However, the --enable-unsupported configure option enables users to get around these checks at their own risk. (You can actually view the configure file to see where the checks are made.) If the build completes properly and the tests pass, then the installation should be okay.



ROS forces me to have the CXX useflag (see https://bugs.gentoo.org/392683)
Adding an unsupported useflag will allow hdf5 to have both MPI and C++ support
better would be also having tests to do after the build

Comment 1 Benda Xu gentoo-dev

2020-03-02 03:56:05 UTC

Thank you Alessandro.  Patches welcome.

Comment 2 Larry the Git Cow gentoo-dev

2020-03-08 06:49:18 UTC

The bug has been closed via the following commit(s):

https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=27d655b364e26cfb971d655a691f0ffaef96e8f8

commit 27d655b364e26cfb971d655a691f0ffaef96e8f8
Author:     Alessandro Barbieri <lssndrbarbieri@gmail.com>
AuthorDate: 2020-03-02 07:50:25 +0000
Commit:     Benda Xu <heroxbd@gentoo.org>
CommitDate: 2020-03-08 06:49:08 +0000

    sci-libs/hdf5: add unsupported useflag
    
      this will allow unsupported combinations of useflags such as MPI +
      CXX.
    
      link mpi when using mpi.
    
    Closes: https://bugs.gentoo.org/710986
    Closes: https://github.com/gentoo/gentoo/pull/14821
    Package-Manager: Portage-2.3.89, Repoman-2.3.20
    Signed-off-by: Alessandro Barbieri <lssndrbarbieri@gmail.com>
    Signed-off-by: Benda Xu <heroxbd@gentoo.org>

 sci-libs/hdf5/hdf5-1.10.5-r1.ebuild | 106 ++++++++++++++++++++++++++++++++++++
 sci-libs/hdf5/metadata.xml          |   1 +
 2 files changed, 107 insertions(+)