Going back to the original question, I realised that my approach could
not work.
In short the list of targets and commands that I need to generate depend
on a file,
which is generated from a python script.
So I thought I could use execute_process before the foreach:
execute_process(
OUTPUT_FILE ${INSTALLED_EGGS_LIST}
COMMAND "${PYTHON_EXECUTABLE} ${GEN_DEPENDENCY_SCRIPT}
${BUILD_APP_OPTIONS}"
)
foreach (egg ${INSTALLED_EGGS_LIST})
set(egg_install ${egg}_install)
set(egg_unzip ${egg}_unzip)
add_custom_target(${egg_install})
add_custom_target(${egg_unzip})
add_custom_command(
TARGET ${egg_install}
COMMAND ${PYTHON_EXECUTABLE} ${egg} setup.py bdist_egg -d
${DESTINATION}
WORKING_DIRECTORY ${egg}
)
add_custom_target(
TARGET ${egg_unzip}
COMMAND ${PYTHON_EXECUTABLE}
)
endforeach ()
But now *why* the process is actually not executed every time I run
"cmake", as I was expecting?
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