The "fatal error: 'stddef.h' file not found" error is caused by incomplete installation of IWYU, which can be fixed directly. See https://github.com/include-what-you-use/include-what-you-use/issues/100
The "fatal error: 'stddef.h' file not found" error is caused by incomplete installation of IWYU, which can be fixed directly. See https://github.com/include-what-you-use/include-what-you-use/issues/100