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Catkin invoke script built in other package

catkin
cmake

asked 2014-06-15 12:20:18 -0500

mkoval

524 ●17 ●27 ●33 http://mkoval.org/

I am trying to using add_custom_target to invoke a binary during the build process. This is tricky because the binary is built by another Catkin package and is installed its libexec directory. I can't figure out how to make this work when both packages are built in the same Catkin workspace. I also am not sure how to call the binary in a way that is portable between the devel and install spaces.

These seem to be two separate issues:

How do make my custom target depend on the binary built by the other package? I can't simply add it as a dependency, because that would fail when the other package is in a chained workspace.
What is the correct way of resolving the path to the binary? Should I use rosrun, rospack, or catkin_find? Or do I need to somehow export a CMake variable that contains the path?

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answered 2014-06-19 18:04:47 -0500

mkoval

524 ●17 ●27 ●33 http://mkoval.org/

I found a few other answers that hint at the solution. This is what I finally came up with that works:

I created a file my_package-extras.cmake.em that exports CMake variables that point to all of the binary files that I plan to use during the build of another Catkin project. This file detects whether we are doing a devel build or an install build---and sets the paths appropriately---by checking whether my_package_SOURCE_DIR is defined.

Finally, I added the option CFG_EXTRAS my_package-extras.cmake to the catkin_package() call. This file will be included in any CMake files that find_package(my_package). Therefore, those CMake files can use the variables defined in that file to depend on (to insure that its built) and call the binaries exported by my_package.

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Asked: 2014-06-15 12:20:18 -0500

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Last updated: Jun 19 '14

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