Hey Seth,

I was able to successfully use OpenCascade 7.1 and export using kicad2step!

Now to find out why…


From: Seth Hillbrand<mailto:seth.hillbr...@gmail.com>
Sent: Friday, February 2, 2018 11:10 AM
To: Thomas Figueroa<mailto:tom_figue...@hotmail.com>
Subject: Re: [Kicad-developers] [PATCH] Allow OpenCASCADE standard edition

Hi Thomas-

I located a windows machine to try this.  I suspect that this is an artifact of 
OpenCascade 7.2.  Can you test with OpenCascade 7.1?  I haven't tracked down 
exactly what changed in 7.2 but it appears that 7.0 and 7.1 work but 7.2 will 
require additional work in kicad2step.

Of note, OCCT 6.8 also works but 6.9 (and OCE 0.18, which is based on 6.9) do 
not work either.  This is due to a compiler optimization but appears to be a 
different issue than the 7.2 one.


2018-01-31 19:04 GMT-08:00 Thomas Figueroa 
Hello Seth,

I’ve had the opportunity to test this on Windows (MSVC, but I’ve had the same 
issue with MSYS2).
STEP models work great in the 3D viewer, and in the footprint module editor, 
just as in OCE.
Unfortunately, I cannot get the STEP export to work. I’ve had a run at using 
OpenCascade before
and encountered this exact same issue. As an example, I’ve attached an 
outputted file.
The following output is from the command line kicad2step:

20:31:07: C:\dev\kicad-personal\utils\kicad2step\pcb\oce_utils.cpp: fileType: 
  * no such file: ''

20:31:07: C:\dev\kicad-personal\utils\kicad2step\pcb\oce_utils.cpp: 
PCBMODEL::AddComponent: 574
  * no model for filename for ‘’

This repeats for every model. If you have any ideas, I’d be very willing to try 
them out.

- Thomas

From: Kicad-developers 
 On Behalf Of Seth Hillbrand
Sent: Monday, January 29, 2018 12:55 PM
To: KiCad Developers 
Subject: [Kicad-developers] [PATCH] Allow OpenCASCADE standard edition

​Hi All-

Currently, the build requires the opencascade community edition.  For various 
reasons, I need to have the current non-community edition of OpenCASCADE 
installed on my work machine.

The attached patch allows compiling KiCad with either the OpenCASCADE community 
edition or standard edition.

I've tested on a homebrew-based Mac install as well as Linux but haven't 
verified MSW, if someone would be willing to test it there, that would be 
great!  The basic search routines are lightly modified from FreeCAD's logic and 
keep their LGPL copyright on the CMake file.


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