Change ARKit to UIKit since tvOS and watchOS obviously does not have …

…ARKit...

Merge pull request leetal#35 from leetal/dev

Generalise the toolchain

Merge pull request leetal#34 from leetal/dev

New combined build support on newer CMake versions (3.14+).

Update ios.toolchain.cmake

Added CMAKE_CXX_FLAGS_DEBUG with debug settings

Merge pull request leetal#20 from leetal/dev

Removed the forced compiler-checks

Update ios.toolchain.cmake

Fixes leetal#19

Merge pull request leetal#17 from MSNexploder/arm64e-support

Support arm64e (A12 and beyond)

Update ios.toolchain.cmake

Fixed double outputs if manually specifying CMAKE_OSX_SYSROOT

Update ios.toolchain.cmake

Added fix if upgrading Xcode versions on consequent builds

Merge pull request leetal#4 from leetal/new_version

Better compatibility. Possibility to expose symbols (especially useful in shared libraries)