Eclipse/CDT "Exec error:Launching failed"

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Eclipse 3.2, CDT 3.1
Build error
(Exec error:Launching failed)

You will get this error when there is a problem with your "make" command. To fix this, check your command path and your environment.

To check your command path: Right-click on your project, select "Properties", "C/C++ Build", "Build Settings" tab, "Build command".

To check your environment: Right-click on your project, select "Properties", "C/C++ Build", "Environment" tab, and make sure the PATH variable is set correctly. Click "New" to modify environment variables.

See also How to setup the MinGW gcc tools for your Managed Make C Project in CDT 3.1 and Eclipse 3.2