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what's the difference between ${PROJECT_NAME}_generate_message_cpp and ${${PROJECT_NAME}_EXPORTED_TARGETS}

kinetic
ROS

asked 2021-04-05 09:47:01 -0500

joe_smith
1 ●1 ●1

what's the difference between ${PROJECT_NAME}_generate_message_cpp and ${${PROJECT_NAME}_EXPORTED_TARGETS} ? It has confused me for hours. if ${${PROJECT_NAME}_EXPORTED_TARGETS} contains those targets for just the current package , why should we use ${PROJECT_NAME}_generate_message_cpp when building the target that using the messages in the same package?

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Asked: 2021-04-05 09:47:01 -0500

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Last updated: Apr 05 '21

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what's the difference between ${PROJECT_NAME}_generate_message_cpp and ${${PROJECT_NAME}_EXPORTED_TARGETS}