As the title says. On an x86_64 system:
# qlist urdfdom_headers
Of course this became an issue only after migrating to the 17.1 profile.
Upstream PR: https://github.com/ros/urdfdom_headers/pull/58
Created attachment 584976 [details, diff]
Quick-fix patching the CMakeLists.txt to install to the correct place.
This does exactly the same as the PR linked above.
So, while not necessary in the long run, for now it fixes the build.
Fixed in 1.0.5 upstream released May 8, 2020
*** This bug has been marked as a duplicate of bug 652112 ***