should i ignore warnings

asked 2018-03-21 06:47:33 -0600

932 ●201 ●254 ●280 http://vikatrobotics.com

Should i ignore all the warnings while building some project in ros and only remove the errors? For example while building a project i get below yellow colourd warnings:

-- Found gmock sources under '/usr/src/gmock': gmock will be built
CMake Warning (dev) at /usr/src/gmock/CMakeLists.txt:40 (project):
  Policy CMP0048 is not set: project() command manages VERSION variables.
  Run "cmake --help-policy CMP0048" for policy details.  Use the cmake_policy
  command to set the policy and suppress this warning.

  The following variable(s) would be set to empty:

    PROJECT_VERSION
This warning is for project developers.  Use -Wno-dev to suppress it.

    CMake Warning (dev) at /usr/src/gtest/CMakeLists.txt:42 (project):
      Policy CMP0048 is not set: project() command manages VERSION variables.
      Run "cmake --help-policy CMP0048" for policy details.  Use the cmake_policy
      command to set the policy and suppress this warning.

  The following variable(s) would be set to empty:

    PROJECT_VERSION
This warning is for project developers.  Use -Wno-dev to suppress it.

Will not this type of warnings create bug latter?

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stevejp ( 2018-03-21 07:06:42 -0600 )edit

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answered 2018-03-21 21:35:18 -0600

tfoote

58457 ●128 ●550 ●526 http://www.ros.org/

Warnings are usually there for a reason. You should not just ignore them outright. They usually can mean that you're doing something that might be a problem. They will help you write cleaner code.

This is really a more general topic than ROS so I'd suggest that you look at external resources. Here are a few resources I found quickly:

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answered 2018-03-21 20:51:46 -0600

JamesGiller

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It is good practice to deal with all warnings and end up with a squeaky clean build. Sometimes warnings like for a "narrowing conversion" may indicate bugs in your code. The warnings you specify here seem to be benign and you can suppress them by adding -Wno-dev to your build flags as the message says.

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should i ignore warnings

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