Cmake build is up-to-date and extended to PyIlmBase

[charlesfleche]

These patches allow to build IlmBase, PyIlmBase and OpenEXR with CMake. They allow to build the openexr code base on more recent Ubuntu distributions : see http://lists.nongnu.org/archive/html/openexr-devel/2013-09/msg00013.html

The CMake build now matches the autotools configuration in term of artifacts naming and library versioning. The CMake build has also been extended to PyIlmBase and allow to run tests and build source tarballs.

To build with CMake :

1. set LD_LIBRARY_PATH, PKG_CONFIG_PATH and PYTHONPATH to the relevant paths under the installation prefix.

       export PREFIX=/path/to/openexr/install/prefix
       export LD_LIBRARY_PATH=$PREFIX/lib
       export PKG_CONFIG_PATH=$PREFIX/lib/pkgconfig
       export PYTHONPATH=$PREFIX/lib/python2.7/site-packages

2. create a build directory outside of the source tree and cd inside

3. run cmake by targeting one of the openexr subdir and specify the installation prefix with -DCMAKE_INSTALL_PREFIX. For IlmBase :
   `sh
   cmake /path/to/OpenEXR/IlmBase -DCMAKE_INSTALL_PREFIX=$PREFIX
   ``

4. You can now run make
   sh make help # display the available make targets make # run make VERBOSE=1 to see the debug output make install make test # run the tests, IexTest, ImathTest, etc... IlmImfFuzzTest and IlmImfTest take a __long__ time make package_source # build a source tarball

As few features have not been ported yet :

• openex_viewers
• -namespaceversioning
• -customusernamaspace
• generation of .la files (is it really necessary ? Seems more like a hangover from the autotools)
• link from libName.so to libName-2_0.so, which shouldn't be a problem if the projects linking against OpenEXR use pkgconfig to get the dependency names

These patches have been tested on Ubuntu 13.04 64bits only.

[pstanczyk]

Testing these now ... thanks for the submission.

[pstanczyk]

Hey - I just grabbed your changes, made a few tweaks and pushed them out to item76 branch. Could you do a pull on that branch and see if that works for you?

[pstanczyk]

By the way - I am curious to know the impact this change will make to windows users

[charlesfleche]

Almost worked : PyImathFixedVArray.h and PyImathFixedVArray.cpp need to be added to the PyImath CMake source list. It compiles but obviously there is a missing symbol when importing the imath python module.
I remember fixing that yesterday but I obviously forgot to push that patch...
Apart from that everything seems fine here on Ubuntu 13.04 64bits.

[charlesfleche]

On 24/10/13 00:06, Piotr wrote:

By the way - I am curious to know the impact this change will make to
windows users

No idea, I don't have a Windows machine handy right now, sorry.

Is there a plan to drop the autotools build entirely and only keep CMake ?

[pstanczyk]

Not in the near future, but we may have a go at cleaning up the build process to avoid the intermediate steps...
I'll add those missing files in

• Piotr

  ---

  From: Charles Flèche [[email protected]]
  Sent: 23 October 2013 16:34
  To: openexr/openexr
  Cc: Piotr Stanczyk
  Subject: Re: [openexr] Cmake build is up-to-date and extended to PyIlmBase (Cmake build is up-to-date and extended to PyIlmBase #76)

On 24/10/13 00:06, Piotr wrote:

By the way - I am curious to know the impact this change will make to
windows users

—
Reply to this email directly or view it on GitHub
#76 (comment).

No idea, I don't have a Windows machine handy right now, sorry.

Is there a plan to drop the autotools build entirely and only keep CMake ?

—
Reply to this email directly or view it on GitHubhttps://github.com//pull/76#issuecomment-26955434.

[ghost]

Thank you, Charles! It's nearly impossible to build PyIlmBase with MinGW under Windows using autotools, your updates helped me compile it successfully. Bummer that they're not merged with the main branch still.

[charlesfleche]

I'm glad, cheers. However I though my changes had been merged already.
It's been a little while I didn't have to directly work on OpenEXR, I'll
check that, thanks for the head up.

[ghost]

I can't find your CMakeLists in this repo current branches.

[charlesfleche]

Hey, is there something I need to change before this pull request is merged into the main repo ?

[ghost]

Currently IlmBase can't be compiled on my setup. I've opened an issue: #94

[ghost]

@charlesfleche ok, I found a solution to the problem above, here's my feedback: could you expose numpy include folder for CMake's GUI? I have only boost and python exposed, but numpy is needed to successfully compile it as well.

[charlesfleche]

@procedural on which branch do you want to do that ? On the cmake-fixes branch or the item76 branch ?

[ghost]

@charlesfleche cmake-fixes

[charlesfleche]

Okay I think @pstanczyk wanted us to work from the item76 branch. I'm trying to clone my repo on my local machine again (I'm currently in a country where the internet connection is really slow and unreliable…) give the item76 branch another go