our system uses some xml files to generate some code. So I've created a custom command to scan and parse these files, and generate stuff as accorded. This is what I did:
file(GLOB BEAN_XML_FILES "../../*.xml")
add_custom_command(TARGET communication PRE_BUILD
COMMAND python
ARGS bean_maker.py --input-directory ${SOURCE_DIR}/docs/beans --output-directory ${SOURCE_DIR}/beans
WORKING_DIRECTORY ${SOURCE_DIR}/tools/bean_maker
COMMENT "Running bean maker..."
DEPENDS ${BEAN_XML_FILES})
The problem is that add_custom_command only runs when I run cmake, even when I modified some xml inside the folder.
How could I do this to run when changes are made to the files?
Use the add_custom_command signature for adding a custom command to produce output files.
add_custom_command(OUTPUT ${GENERATED_SOURCE_FILES}
COMMAND command1 [ARGS] [args1...]
DEPENDS ${BEAN_XML_FILES})
At build time, the command will execute if the generated files are older than the files they depend on.