Doesn't work on linux cmake 3.10.2

[EngiBob]

-- The C compiler identification is GNU 7.3.0
-- The CXX compiler identification is GNU 7.3.0
-- Could not determine Eclipse version, assuming at least 3.6 (Helios). Adjust CMAKE_ECLIPSE_VERSION if this is wrong.
-- Check for working C compiler: /usr/bin/cc
-- Check for working C compiler: /usr/bin/cc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Detecting C compile features
-- Detecting C compile features - done
-- Check for working CXX compiler: /usr/bin/c++
-- Check for working CXX compiler: /usr/bin/c++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
CMake Warning at build/cmake/CMakePCHCompiler/CMakePCHCompiler.cmake:39 (message):
Precompiled headers not supported for
Call Stack (most recent call first):
src/librender/CMakeLists.txt:9 (target_precompiled_header)
-- Generating done

Looking at the source it is missing CMAKE_PCH_COMPILER_LANGUAGE

If I set CMAKE_PCH_COMPILER_LANGUAGE to CXX the following error comes up:

CMake Error: Error required internal CMake variable not set, cmake may not be built correctly.
Missing variable is:
CMAKE_CXXPCH_COMPILE_OBJECT

[EngiBob]

I may be including it wrong.

[EngiBob]

Confirmed

[nanoant]

Can you please provide a minimal CMakeLists.txt example showing the problem? I have CMake 3.14.2 and it seems to work for me.