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 | 1 | initial version |
Collecting relevant comments from the answer from @janindu :
This loop in
genmsginvokes all available generators which are on their own create their targets: https://github.com/ros/genmsg/blob/f9dad2f897fc9bafec038ed8a74986ba766e9e9d/cmake/pkg-genmsg.cmake.em#L86-L132
--- dirk-thomas
Generators essentially register as plugins against
genmsgusing amessage_generatortag in theexportsection of their manifests.
--- gvdhoorn
With regard to the enumeration of packages that provide language generators, this is entirely dependent on which packages are present; for most catkin workspaces, this is a function rosdep and any package.xml files present.
However, for the _common case_ where a given project depends on the message_generation package, the following generators are dependencies thereof and guaranteed to be present:
In this case, the generate_messages macro provided by genmsg will understand (eponymous) LANG option arguments for each of these five generators.
References:
Much thanks to @janindu, @gvdhoorn, and @dirk-thomas for all your help.
| | 2 | No.2 Revision |
Collecting relevant comments from the answer from @janindu :
This loop in
genmsginvokes all available generators which are on their own create their targets: https://github.com/ros/genmsg/blob/f9dad2f897fc9bafec038ed8a74986ba766e9e9d/cmake/pkg-genmsg.cmake.em#L86-L132
--- dirk-thomas
Generators essentially register as plugins against
genmsgusing amessage_generatortag in theexportsection of their manifests.
--- gvdhoorn
With regard to the enumeration of packages that provide language generators, this is entirely dependent on which packages are present; for most catkin workspaces, this is a function rosdep and any package.xml files present.
However, for the _common case_ where a given project depends on the message_generation package, the following generators are dependencies thereof and guaranteed to be present:
In this case, the generate_messages macro provided by genmsg will understand (eponymous) LANGLANGS
References:
Much thanks to @janindu, @gvdhoorn, and @dirk-thomas for all your help.
| | 3 | No.3 Revision |
Collecting relevant comments from the answer from @janindu :
This loop in
genmsginvokes all available generators which are on their own create their targets: https://github.com/ros/genmsg/blob/f9dad2f897fc9bafec038ed8a74986ba766e9e9d/cmake/pkg-genmsg.cmake.em#L86-L132
--- dirk-thomas
Generators essentially register as plugins against
genmsgusing amessage_generatortag in theexportsection of their manifests.
--- gvdhoorn
With regard to the enumeration of packages that provide language generators, this is entirely dependent on which packages are present; for most catkin workspaces, this is a function rosdep and any package.xml files present.
However, for the _common case_ common case where a given project depends on the message_generation package, the following generators are dependencies thereof and guaranteed to be present:
In this case, the generate_messages macro provided by genmsg will understand (eponymous) LANGS option arguments for each of these five generators.
References:
Much thanks to @janindu, @gvdhoorn, and @dirk-thomas for all your help.
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