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RLovelett/CMakeLists.txt

Created April 1, 2020 17:59
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Example of preferring Python 2 over Python3 with new FindPython2 and FindPython3 CMake modules
Raw
CMakeLists.txt
cmake_minimum_required(VERSION 3.12.4)
find_package(Python2 COMPONENTS Interpreter)
find_package(Python3 COMPONENTS Interpreter)
if (NOT Python2_Interpreter_FOUND AND NOT Python3_Interpreter_FOUND)
message(FATAL_ERROR "Could NOT find Python2 or Python3")
endif()
# https://github.com/Kitware/CMake/blob/cfc92b483fbd3695d4a67843977e709ba4d7ea47/Modules/FindPython/Support.cmake#L2433-L2439
if (Python2_Interpreter_FOUND)
add_executable(Python::Interpreter IMPORTED)
set_property(TARGET Python::Interpreter PROPERTY IMPORTED_LOCATION "${Python2_EXECUTABLE}")
elseif (Python3_Interpreter_FOUND)
add_executable(Python::Interpreter IMPORTED)
set_property(TARGET Python::Interpreter PROPERTY IMPORTED_LOCATION "${Python3_EXECUTABLE}")
else()
message(FATAL_ERROR "Could NOT find Python2 or Python3")
endif()
if (TARGET Python::Interpreter)
get_target_property(_location Python::Interpreter IMPORTED_LOCATION)
message(STATUS "Set Python::Interpreter = ${_location}")
endif()
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