Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Please briefly explain why you feel this question should be reported.
Please briefly explain why you feel this answer should be reported.
Please briefly explain why you feel this user should be reported.
On my system (Mac OS 10.6) /usr/include/stdarg.h is:
/* This file is public domain. */
/* GCC uses its own copy of this header */
#if defined(__GNUC__)
#include_next <stdarg.h>
#elif defined(__MWERKS__)
#include "mw_stdarg.h"
#else
#error "This header only supports __MWERKS__."
#endif
So, if GCC uses its own copy of stdarg.h, where is it? I have no idea on what
that #include_next means (maybe a GCC extension?), nor something about
“MWERKS” (a compiler?).
<stdarg.h>, even more than most C library headers, tends to be very compiler-specific. As such, each of the compilers on OS X has it’s ownstdarg.himplementation, found in a compiler-specific location (which is included as part of the default search paths for that compiler). The compiler finds the genericstdarg.h, which basically tells it to “keep looking” (via the extension#include_next), and it then finds the compiler-specific implementation.__MWERKS__refers to an old compiler for PPC, “MetroWerks CodeWarrior”.