Re: [gccsdk] stdarg.h and stddef.h

On 05/22/2015 07:09 AM, Ron wrote:
> stdarg.h and stddef.h have references from other files, more-so stddef.h
> It appears 4.1.2 and 4.7.4 dont have these files, is it ok to delete the
> #include 's referring to them?
>
> It is not an issue I have run into compiling, but Cproto uses the cpp
> and traces everything in the files.
>
> Another thing it errors with is size_t, maybe the cproto grammar.y file
> needs updating.

stdarg.h and stddef.h. are headers files which should be available for
building C or C++. Both headers files define very fundamental types
(like size_t) which are tightly linked to the target definition (in our
case arm-unknown-riscos). There is no need to delete the include
statements in C/C++ programs, at some point you need those headers
either directly or indirectly. Just google/wiki for more info on those
headers.

Because of their tight link to compiler's target definitions and
actually being independent of the runtime library, they are located in
lib/gcc/arm-unknown-riscos/4.7.4/include and not in the runtime library
(which is in our case UnixLib), not in arm-unknown-riscos/include.

I bet the background of your questions is that you are not using gcc/g++
frontend executables but rather cpp/cc1 and you're missing all the
necessary options (like the ones to correctly locate all the include
directories) which gcc/gcc++ specifiy when starting cpp/cc1/ld/as/ etc.
Unless you're really really know what you're doing, do not use cpp/cc1
directly but use gcc/g++ and explore its options like -E/-S/-x etc for
usecases like 'just preprocess', 'just create assembler file' etc. See
documentation, or gcc --help

Jo.


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