| | 297 | GCC uses command line warnings to turn on warnings. If you want to turn on warnings about unused variables you would add -Wunused-variable to the command line. Some of the command line options such as -Wall, -Wextra, and -pedantic turn on groups of warnings as detailed below. Sometimes a group is almost right, but not quite. If you want -pedantic, for example, but without warnings about the use of long long for use with C++98, you could say -pedantic -Wno-long-long. In general, for any diagnostic option specified as -Woption-name, it can be turned off with -Wno-option-name. |
