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I usually do like below to check the rosdistro. Are there better way to do like this?
# check ros distro >= indigo
execute_process(
COMMAND python -c "import sys; sys.exit(ord('$ENV{ROS_DISTRO}'[0]) >= ord('indigo'[0]))"
RESULT_VARIABLE DISTRO_GE_INDIGO
)
if(DISTRO_GE_INDIGO)
...
endif()
I found a better solution by comparing $ENV{ROS_DISTRO} value with STRGREATER like below:
if("$ENV{ROS_DISTRO}" STRGREATER "hydro")
...
endif()
You can access the environment variable ROS_DISTRO directly in CMake:
$ENV{ROS_DISTRO}
Regarding the greater check: your approach makes assumptions about future releases which might not be true. Therefore I would suggest a more defensive approach comparing the distro name against a list of known names and inverting the logic.
Asked: 2015-12-16 01:13:07 -0500
Seen: 954 times
Last updated: May 22 '16
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I'm not sure whether there is a CMake macro defined anywhere. An alternative to the python one-liner might be to use
rosversion -d. That returnshydro,indigo, etc.