CMake: FindPackage in Source Fails with CMakeLists about isaac

[theZiz]

Could you test replacing line 109 in the CMakeLists.txt of the isaac PIGonGPU branch from
find_package(ISAAC 0.1.0 REQUIRED)
to
find_package(ISAAC 0.1.0 CONFIG REQUIRED)
and tell me, whether he still complains if a CMakeLists.txt exists? Unfortunately I can't reproduce the error.

[ax3l]

I am not exactly sure right now what this is doing (CMake documentation) but
find_package(ISAAC 0.1.0 CONFIG REQUIRED)
is also not fixing it and enters CMakeLists.txt (and fails in line 75).

If one would like to use
find_package(ISAAC 0.1.0 MODULE REQUIRED)
then we would need a FindISAAC.cmake file instead (in CMAKE_MODULE_PATH). Idk which is the modern way to go.

[ax3l]

To reproduce: I should mention that the root of isaac's source is in my CMAKE_PREFIX_PATH.

[theZiz]

Should be fixed by moving the CMake Config files of ISAAC to the insitu library directory e0cfb06