OCE and OCCT on one linux machine

[sgrogan]

I tried to get it working with the NAMES argument for find_package. Unfortunately if multiple versions of oce/occt are installed sometimes the system default isn't found when OCE_DIR is unset.

[wmayer]

I tried to get it working with the NAMES argument for find_package. Unfortunately if multiple versions of oce/occt are installed sometimes the system default isn't found when OCE_DIR is unset.

I assume you used it like this: find_package(OCE NAMES OCE OpenCascade) (not sure if the syntax is right)? But then you have no explicit control if you prefer OCE or OCC

[sgrogan]

I assume you used it like this: find_package(OCE NAMES OCE OpenCascade) (not sure if the syntax is right)? But then you have no explicit control if you prefer OCE or OCC

Yes, it worked well when specifying OCE_DIR, but I didn't try to have OCEConfig.cmake and OpenCascadeConfig.cmake in the same directory. What I didn't like was when not setting OCE_DIR I couldn't figure out the search order to maintain the current default behavior.
With your solution of a USE_OCCT switch, I think it's straight forward to guarantee that the current default doesn't change. I don't know how to make a combo box, but it might be fun to learn. I could try to implement something if you like.

[wmayer]

I did it once. And I just have to look how it was done...

[wmayer]

See new pull request: https://github.com/FreeCAD/FreeCAD/pull/341

If it succeeds I will merge it.

[bernd]

See new pull request: https://github.com/FreeCAD/FreeCAD/pull/341

If it succeeds I will merge it.

How does it work than?

Code: Select all

cmake -DFREECAD_USE_OCC_VARIANT=“Official Version“ -DOCE_DIR=/myocctlibdir  /myfreecadsourcedir 

should find occt even if oce is installed?

[wmayer]

The same way as your proposal. When e.g. the values is set to "Official Version" then the find_package(OCE) won't be executed.

[saso]

Open CASCADE Technology 7.1.0 is out

https://www.opencascade.com/content/ope ... e-download

[bernd]

on ubuntu Xenial with oce dev packages installed and OCCT 7.0.0 self compiled and installed at /opt/... I had to use the following cmake to get it running:

Code: Select all

cmake ../FreeCAD -DFREECAD_USE_OCC_VARIANT="Official Version" -DOCC_INCLUDE_DIR=/opt/local/FreeCAD-0.17/include/opencascade -DOCC_LIBRARY=/opt/local/FreeCAD-0.17/lib/libTKernel.so

means OCE installed, OCCT installed and no code change needed to proper choose OCCT See German topic: viewtopic.php?f=13&t=18397&start=10#p146607

Open CASCADE Technology 7.1.0 is out
https://www.opencascade.com/content/ope ... e-download

I just managed to really handle OCCT 7.0.0

[saso]

Open CASCADE Technology 7.1.0 is out
https://www.opencascade.com/content/ope ... e-download

I just managed to really handle OCCT 7.0.0

hopefully it does not bring too many unwanted changed but some useful bug fixes