Same thing as https://github.com/chadmv/cgcmake/pull/4 but no extra stuff ADD_MAYA_PLUGIN_ENTRY has been renamed to ADD_MAYA_PLUGIN (no changes to readme)

Hi, I've made the following changes to make FindMaya.cmake a little easier to use.

• Configuration will fail and FindMaya no longer silently chooses Maya 2017 when MAYA_VERSION is not specified.
• Added a new cmake function, ADD_MAYA_PLUGIN_ENTRY, that can be used in place of add_library (but target declaration only) for target that will end up as the actual plugin binary.

Also, changed the example in the readme to demonstrate modular setup.

Hi Chad,

I'm hoping you'll let me add this FindEigen CMake module to the project. Eigen is stable and fast linear algebra library for C++, more information is included in my commit's message. Having the module included here will be useful for me, and hopefully someone else too!

Thanks for taking a look! Also, I'm happy to provide any further information on Eigen if required.

try to build it for Maya 2017 on linux machine but failed. cmake version 3.9.5 c++ (GCC) 7.2.0

`cmake -G "Unix Makefiles" -DMAYA_VERSION=2017 ../ -- The C compiler identification is GNU 7.1.1 -- The CXX compiler identification is GNU 7.1.1 -- 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 -- Found Maya: /usr/autodesk/maya2017/include
-- Configuring done -- Generating done -- Build files have been written to: /T/mayaPlugInBase/build

cmake --build . --config Release Scanning dependencies of target helloWorld [ 50%] Building CXX object src/CMakeFiles/helloWorld.dir/helloWorld.cpp.o c++: error: "-fPIC": No such file or directory make[2]: *** [src/CMakeFiles/helloWorld.dir/build.make:63: src/CMakeFiles/helloWorld.dir/helloWorld.cpp.o] Error 1 make[1]: *** [CMakeFiles/Makefile2:86: src/CMakeFiles/helloWorld.dir/all] Error 2 make: *** [Makefile:84: all] Error 2 `

Hello, I am trying to figure out how to set up FindMaya to load lib from custom location without modifying FindMaya.cmake file. For example if I want to use maya developer kit instead of installing maya or for CI/CD. Is it a way to specify custom location.

I have tried to pass MAYA_LOCATION env variable but it still looking for maya in default directory, specified in FindMaya.cmake file.

remove following line after line 114 set_property(TARGET Maya::Maya APPEND PROPERTY INTERFACE_COMPILE_OPTIONS $<$<PLATFORM_ID:Linux>:"-fPIC">)

I installed both, maya2017 and maya2018. Without setting NO_DEFAULT_PATH, cmake always find maya2017/include even though I have set DMAYA_VERSION=2018.