Re: [patches] eglibc & powerpc-linuxspe-gcc (problem configuring/compiling eglibc svn trunk for mpc8540)

[Steven Munroe <munroesj@xxxxxxxxxx>]

Philippe De Muyter wrote:
> On Sun, Dec 09, 2007 at 12:08:11PM +0100, I wrote:
>
>   
>> I will try by copying the ports/ directory into the libc/ directory, but that
>> makes the use of the svn version more difficult.
>>     
>
> I have done what I wrote above, thus copying eglibc/ports into eglibc/libc,
> and configuring with --witch-cpu=e500 --enable-add-ons=ports, but
> it still fails with :
>
>     In file included from ../sysdeps/powerpc/powerpc32/fpu/s_isnan.c:1:
>     ../sysdeps/powerpc/fpu/s_isnan.c:59: warning: conflicting types for built-in function `isnanf
>     ../sysdeps/powerpc/fpu/s_isnan.c: In function `__isnan':
>     ../sysdeps/powerpc/fpu/s_isnan.c:45: error: impossible constraint in `asm'
>     ../sysdeps/powerpc/fpu/s_isnan.c:48: error: impossible constraint in `asm'
>     make[2]: *** [/archives/meip/devtools/cross-build/ppc/obj/eglibc/math/s_isnan.o] Error 1
>     make[2]: Leaving directory `/archives/meip/devtools/cross-build/src/eglibc/libc/math'
>     make[1]: *** [math/subdir_lib] Error 2
>     make[1]: Leaving directory `/archives/meip/devtools/cross-build/src/eglibc/libc'
>     make: *** [all] Error 2
>
> The "impossible constraint" is "f', which effectively is not allowed on a
> spe-only target.
>
> I have then tried to replace the sysdeps directory of libc by the sydeps
> directory of ports, but it then fails with :
>
>     In file included from <command-line>:0:
>     ./include/libc-symbols.h:824:26: error: symbol-hacks.h: No such file or directory
>
> I have then tried to merge the sysdeps directory of ports into the sysdeps
> directory of libc, and that seems better, but I now get :
>
>     tls.make.c:0: error: bad value (e500) for -mcpu= switch
>
> I do not know why my powerpc-linuxspe compiler does not understand -mcpu=e500
>
> Is that not yet supported to build eglibc with a powerpc-linuxspe compiler
> or do I miss some obvious configuration setting ?
>
>   
e500 is booke and is not powerpc. The common subset is --without-fp. So
if you want e500 you have to configure --without-fp.

I though I told these guys to define their own platform target?

> Best regards
>
> Philippe
>