cmake install does not trigger custom command

Question

In my project I use add_custom_command to generate some output file:

    add_custom_command(
        OUTPUT ${LIB_NAME}
        # commands
    )
    add_custom_target(Core-static DEPENDS ${LIB_NAME})

I then have instruction to install the library:

install(FILES "${CMAKE_CURRENT_BINARY_DIR}/${LIB_NAME}"
        DESTINATION "${CORE_INSTALL_DIR}/lib/"
)

When I manualy build Core-static target, I can then successfuly run installation. However, running install does not trigger the custom command and the library is not produced resulting in an error. Also, for some reason rebuilding the solution (in Visual Studio) does not trigger Core-static project build.

Tsyvarev · Accepted Answer · 2019-01-18 16:22:10Z

2

In CMake, installing triggers only ALL (pseudo-)target.

For make your file installable, you need to force ALL target to build your file. Currently, your custom target Core-static is not buit by default (by ALL target). For fix that, add ALL keyword when create the target:

add_custom_target(Core-static ALL DEPENDS ${LIB_NAME})

answered Jan 18, 2019 at 16:22

Tsyvarev

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