[BusyBox] glibc macro's, strlen

[Erik Andersen]

On Sat Mar 09, 2002 at 04:45:58PM +1100, Glenn McGrath wrote:
> strlen adds a fair bit of space everytime its used as its implemented in
> glibc as a macro.
> 
> If we do something like this
> 
> size_t xstrlen(const char *string)
> {
> 	return(strlen(string));
> }
> 
> we save 32 Bytes every time we use xstrlen instead of strlen.
> 
> I guess its a bad approach though, as its a glibc problem, not busybox's
> or uclibc's.

Actually, with a bit more testing, it turns out it is _not_
glibc specific....  It is gcc!  gcc is dropping in its own 
builtin strlen() implementation.  If we were to add 
    CFLAGS+=-fno-builtin
That will give us back most of this space...

 -Erik

--
Erik B. Andersen             http://codepoet-consulting.com/
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