cmake - custom FindMaya.cmake plugin

FindMaya.cmake

# adapted from Chad Vernon's wonderful video series
# only tested on OSX so far
# to use, set the CMAKE_MODULE_PATH to point at this file. 

# CACHE keyword allows us to pass in from the command line
if(NOT DEFINED MAYA_VERSION)
    set(MAYA_VERSION 2017 CACHE STRING "Maya version")
endif()

set(MAYA_COMPILE_DEFINITIONS "REQUIRE_IOSTREAM;_BOOL")
set(MAYA_INSTALL_BASE_SUFFIX "")
set(MAYA_LIB_SUFFIX "")
set(MAYA_LIB_PREFIX "")
set(MAYA_LIB_SUBDIR "")
set(MAYA_INC_SUBDIR "include")
set(MAYA_PLUGIN_EXTENSION "")
set(MAYA_DEVKIT_SUFFIX "-devkit")
if(WIN32)
    # windows
    set(MAYA_INSTALL_BASE_DEFAULT "C:/Program Files/Autodesk")
    set(MAYA_LIB_SUFFIX "lib")
    set(MAYA_LIB_SUBDIR "lib")
    message(STATUS "I am an WINDOWS")
    set(MAYA_COMPILE_DEFINITIONS "${MAYA_COMILE_DEFINITIONS};NT_PLUGIN")
    set(MAYA_PLUGIN_EXTENSION ".mll")

elseif(APPLE)
    set(MAYA_INSTALL_BASE_DEFAULT "/Applications/Autodesk")
    set(MAYA_INSTALL_BASE_SUFFIX "/Maya.app")
    set(MAYA_LIB_SUFFIX "dylib")
    set(MAYA_LIB_PREFIX "lib")
    set(MAYA_LIB_SUBDIR "/Contents/MacOS")
    set(MAYA_INC_SUBDIR "/include")
    set(MAYA_COMPILE_DEFINITIONS "${MAYA_COMILE_DEFINITIONS};OSMac")
    set(MAYA_PLUGIN_EXTENSION ".bundle")

    message(STATUS "I am an APPLE")

else()
    #linux
    set(MAYA_INSTALL_BASE_DEFAULT /usr/autodesk)
    set(MAYA_INSTALL_BASE_SUFFIX -x64)
    set(MAYA_LIB_SUFFIX "so")
    set(MAYA_LIB_PREFIX "lib")
    set(MAYA_COMPILE_DEFINITIONS "${MAYA_COMILE_DEFINITIONS};LINUX")
    set(MAYA_PLUGIN_EXTENSION ".so")
    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS -fPIC")
    message(STATUS "I am LINUX")

endif()
message(STATUS "MAYA_LIB_SUBDIR " ${MAYA_LIB_SUBDIR})
set(OPENMAYA ${MAYA_LIB_PREFIX}OpenMaya.${MAYA_LIB_SUFFIX})

# override the default installation path
set(MAYA_INSTALL_BASE_PATH ${MAYA_INSTALL_BASE_DEFAULT} CACHE STRING "Root Maya installation path")

set(MAYA_LOCATION ${MAYA_INSTALL_BASE_PATH}/maya${MAYA_VERSION}${MAYA_INSTALL_BASE_SUFFIX})
set(MAYA_DEVKIT_LOCATION  ${MAYA_INSTALL_BASE_PATH}/maya${MAYA_VERSION}${MAYA_DEVKIT_SUFFIX})
# find the include path
message(STATUS "searching for ${OPENMAYA} in ${MAYA_LOCATION}${MAYA_LIB_SUBDIR}")

find_path(MAYA_LIBRARY_DIR ${OPENMAYA}
        PATHS
          ${MAYA_LOCATION}
           $ENV{MAYA_LOCATION}
        PATH_SUFFIXES
           "${MAYA_LIB_SUBDIR}/"
        DOC "Maya library path"
)
message(STATUS "MAYA_INC_SUBDIR " ${MAYA_INC_SUBDIR})

message(STATUS "searching for maya/MFn.h in  ${MAYA_DEVKIT_LOCATION}${MAYA_INC_SUBDIR}")

find_path(MAYA_INCLUDE_DIR maya/MFn.h
        PATHS
            ${MAYA_DEVKIT_LOCATION}
            $ENV{MAYA_LOCATION}
        PATH_SUFFIXES
            "${MAYA_INC_SUBDIR}/"
        DOC "Maya include path"
)

set(_MAYA_LIBRARIES OpenMaya OpenMayaAnim OpenMayaFX OpenMayaRender OpenMayaUI Foundation)
foreach(MAYA_LIB ${_MAYA_LIBRARIES})
    find_library(MAYA_${MAYA_LIB}_LIBRARY NAMES ${MAYA_LIB} PATHS ${MAYA_LIBRARY_DIR} NO_DEFAULT_PATH)
    message(STATUS "attempting to set MAYA_${MAYA_LIB}_LIBRARY searching here ${MAYA_LIBRARY_DIR}")
    message(STATUS "lib=" ${MAYA_${MAYA_LIB}_LIBRARY})
    # appending MAYA_${MAYA_LIB}_LIBRARY to variable
    set(MAYA_LIBRARIES ${MAYA_LIBRARIES} ${MAYA_${MAYA_LIB}_LIBRARY})
endforeach()

include(FindPackageHandleStandardArgs)
# cmake - throw an error if you cannot find these
find_package_handle_standard_args(Maya DEFAULT_MSG MAYA_INCLUDE_DIR MAYA_LIBRARIES)
message(STATUS "....")
message(STATUS "FindMaya variables")
message(STATUS "MAYA_LIBRARY_DIR" ${MAYA_LIBRARY_DIR})
message(STATUS "MAYA_INCLUDE_DIR" ${MAYA_INCLUDE_DIR})
message(STATUS "MAYA_LIB" ${MAYA_LIBRARIES})
message(STATUS "....")
function(MAYA_PLUGIN _target)
    if(WIN32)
        set_target_properties(${_target} PROPERTIES
                LINK_FLAGS "/export:initializePlugin /export:uninitializePlugin"
        )
    endif()
    set_target_properties(${_target} PROPERTIES
            COMPILE_DEFINITIONS  "${MAYA_COMPILE_DEFINITIONS}"
            PREFIX ""
            SUFFIX ${MAYA_PLUGIN_EXTENSION}
    )
endfunction()