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Hello, I am building some components on Ubuntu 12.04 LTS, with ROS fuerte, rtt build from source from latest master (e95fe17c5ef504b03785818260d212d54e5bdf54). I am building components with rosmake, and sometimes I get the following annoying warning during build:

CMake Warning: Manually-specified variables were not used by the project: CMAKE_TOOLCHAIN_FILE

I ran rgrep, and verified that none of our CMakeLists are defining this variable. It does appear in the CMakeCache files, which I assume is what is throwing the warning.

Should I silence these warnings, and how?

Originally posted by drewm1980 on ROS Answers with karma: 258 on 2012-11-13

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The variable is set by cmake.mk which can be found in /opt/ros/fuerte/share/ros/core/mk. The file /opt/ros/fuerte/share/ros/core/rosbuild/rostoolchain.cmake contains more information about the purpose of the file. I think it has something to do with cross compilation.

Originally posted by Lorenz with karma: 22731 on 2012-11-13

This answer was ACCEPTED on the original site

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