On 05.08.2008, at 23:38, Roland Kindermann wrote:
Hello,
I have a program that uses four builtin functions: __alloca,
___main, _memset and _strcpy. While __alloca is compiled directly
into the executable, the other three are used from a library. Is
there a way to make gcc compile ___main, _memset and strcpy also
into the executable such that it does not use any libraries anymore?
I already tried -nostdlib but that results in link errors.
For those who care: The reason why I want my executable independent
from any libraries is that I perform static analysis on it and my
analysis tool is not yet able to take additional libraries into
account.
You may try the explicit builtin-versions (the once that are prefixed
with "__builtin_", such as "__builtin_strcpy", however, I doubt that
this helps. AFAIR, builtins of library functions are just an *option*
the compiler *might* use when this would result in more efficient
code, but there is no way to force gcc to actually use them under all
circumstances.
To prevent dependencies to some C library, I would just define own
versions of the respective functions. After all, they should not be
that difficult to implement :-)
Daniel
