CMake add_custom_command not being run

Question

I\'m trying to use add_custom_command to generate a file during the build. The command never seemed to be run, so I made this test file.

cmake_minimum_requir         


        

Answer 1

Add the following:

add_custom_target(run ALL
    DEPENDS hello.txt)

If you're familiar with makefiles, this means:

all: run
run: hello.txt