Re: gcc-4.2.4 bootstrap: multiple "declared 'static' but never defined" warnings in stage 3

[Ángel González <keisial@xxxxxxxxx>]

> On 2012-06-06, at 10:11 PM, t-rexky wrote:
>
>> Compiling with the stage 2 xgcc -Wall or -Wunused generates an endless list of warnings of the following type:
>>
>> <built-in>:0: warning: '__builtin_acos' declared 'static' but never defined
>> <built-in>:0: warning: 'acos' declared 'static' but never defined
>>
>> t-rexky
>>

On 07/06/12 04:22, t-rexky wrote:
> Hello again,
>
> I completed the bootstrap process ignoring the stage 2 compiler warning.  The stage 3 compiler generates the same warnings,
> but it does create good executable code.  I am currently running a make check-gcc that will take many hours on a 68040.
>
> I am completely baffled by what could make gcc generate the warnings below for all declared functions, including the built-ins.
> I would be very grateful for any suggestions or ideas.
>
> Thank you!
Have you tried building a program which uses acos or __builtin_acos?

Eg.
#include <math.h>
#include <stdio.h>

int main() {
    printf("%lf\n", acos(0.5));
    return 0;
}

#include <math.h>
#include <stdio.h>

int main() {
    printf("%lf\n",  __builtin_acos(0.5));
    return 0;
}

(the first one may need to link with -lm, but not the second)