Fix and simplify building docs and schemas
1. Do an in-source build of derived schemas instead of building into build and checking that the files match.
2. Fix paths of installed docs, which were failing on me
3. Consolidate docs into same cmakelists that generates schema files
4. Trang is usually available as an executable, so find it with find_program.
5. Add doc dependencies to package.xml
Signed-off-by: Dan Rose <dan@digilabs.io>
This will modify the default behavior to select BUILD_IDLC based on
whether Maven is discovered or not.
The behavior when `-DBUILD_IDLC` is specified on the command line remains
unchanged - the build will maintain the current behavior of failing to
configure if `BUILD_IDLC=ON` and Maven was later not found.
This reverts (part of) commit 860a6aadae.
Signed-off-by: Scott K Logan <logans@cottsay.net>
This will eliminate two large dependencies when building CycloneDDS with
colcon for ROS 2, which doesn't appear to need the IDLC.
Signed-off-by: Scott K Logan <logans@cottsay.net>
