Cmake parallel build

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12

You do not really answer my question.

  • If you do invoke make then you may define make options in your environment MAKEFLAGS=-j5
  • if you do invoke cmake --build then you may CMAKE_BUILD_PARALLEL_LEVEL=5

In any case this is a user choice so such config ought to stay in user’s hand not in the CMakeLists.txt

You may invoke such parallel build using a custom_target if you prefer that:

add_custom_target(my_parallel_build 
                      COMMAND ${CMAKE_COMMAND} --build -j 5
                      WORKING_DIRECTORY ${CMAKE_BINARY_DIR}
                      COMMENT "My parallel build with 5 cores")

and then you would invoke:
make my_parallel_build