PCL was already defaulted to OFF on Linux, this changes the default to OFF on MSVC
as well. This can be reverted once the primary LibPack for Windows includes a version
of FLANN that compiles under C++17 (the last official release of FLANN, 1.9.1, does
not, but the HEAD in their Git repository does).
Modelled after the code for Eigen3, this adds a version check for Coin.
If pkg_config (or some other method) finds the version string, just
print that. If not, do a REGEX MATCH on the file in Coin's headers that
includes the version information. Note that in this case the beta
version information is excluded.
Based on the information from bunch of the latest supported distros:
Debian Jessie: 1.55
Debian Stretch: 1.62
Ubuntu 16.04: 1.58
Ubuntu 18.04: 1.65
Fedora 31 and 32: 1.69
Redhat Enterprise Linux 8: 1.66 (1.53 for EL-7, though)
openSuse Leap 15.1: 1.66
* coin3d 4.0.0 default location is /usr/share/doc/Coin/html/
* misuses of find_files() if several candidates for filename
* export variable COIN3D_DOC_FOUND that is used by cMake/FreeCAD_Helpers/PrintFinalReport.cmake
Found that on ubuntu 20.04 where QT is still at 5.12, these are called pyuic5 and pyrcc5 now and cmake will not find these and then the build fails without this change
Since PySide2 5.14, 'pyside2-rcc' and 'pyside2-uic' have been renamed into plain 'rcc' and 'uic'.
This leads FindPySide2Tools.cmake to no longer find rcc/uic, as reported in bug #4229 (https://www.freecadweb.org/tracker/view.php?id=4229) and prevents compilation.
FindPySide2Tools has been updated accordingly.
If INSTALL_TO_SITEPACKAGES is enabled, the freecad-namespace package (freecad/__init__.py) is installed in the python-sitepackage-dir. Further, the library install path (CMAKE_INSTALL_LIBDIR)
is used to find the FreeCAD shared library. If, for some reason, one wants to import another installed FreeCAD version it's possible to set the environment variable "PATH_TO_FREECAD_LIBDIR" to
point to the wanted FreeCAD-library (FreeCAD.so / FreeCAD.dll)
