On 13.06.19 03:55, Masahiro Yamada wrote: > What is the point in surrounding the whole of declarations with > ifdef like this? > > #ifdef CONFIG_FOO > int foo(void); > #endif > > If CONFIG_FOO is not defined, all callers of foo() will fail > with implicit declaration errors since the top Makefile adds > -Werror-implicit-function-declaration to KBUILD_CFLAGS. > > This breaks the build earlier when you are doing something wrong. > That's it.
hmm, in general I like the idea of breaking the build as early as possible. depending on your available cpu power, a kernel build can take a while, and it could be a huge waste of time when having to wait for link stage, just to find out about missing functions. @linus: what's your oppinion ? --mtx -- Enrico Weigelt, metux IT consult Free software and Linux embedded engineering [email protected] -- +49-151-27565287
