----- Original Message ----- From: "Waldek Hebisch" hebisch@math.uni.wroc.pl To: gpc@gnu.de Sent: Saturday, January 08, 2005 4:01 AM Subject: Re: Gpc and arm-elf cross compiling
Francesco Lombardi wrote:
Well, I'm not so familiar too ^_^... In order to compile gpc, I forced
fake
directory handling in rts.h (line 77), by commenting "if defined __arm__
||
defined __thumb__", and newlib compilation, by #define _NEWLIB_VERSION. In fact I'm try to build a cross compiler for gameboy advance. A big
trouble
I get is in order to make a libgpc with interworking (arm - thumb)
enabled.
In theory it seems to be correctly compiled:
arm-elf-gpc -print-multi-lib .; thumb;@mthumb interwork;@mthumb-interwork thumb/interwork;@mthumb@mthumb-interwork
but, in fact, i can't compile with -mthumb:
arm-elf-gpc -mthumb --gpc-main=main --specs=gba.specs -o prova.o
prova.pp
/home/gba/bin/../lib/gcc-lib/arm-elf/3.3.1/../../../../arm-elf/bin/ld: /home/gba /bin/../lib/gcc-lib/arm-elf/3.3.1/libgpc.a(init.o)(_p_DoInitProc):
warning:
inte rworking not enabled.
GPC has no multilib support ATM. So only default version of `libgpc.a' is built. So you should either make interworking the defult at configure time (if possible, I do not know). Alternatively, you can set PFLAGS variable to pass extra flags to gpc during library build (something like `PFLAGS=-mthumb-interwork' ?).
Hope helps
I tried the second thing (PFLAGS), but I get similar warnings (interworking not enabled). BTW, there is a way to build libgpc only, without recompiling all gpc?
-- Waldek Hebisch hebisch@math.uni.wroc.pl