Hi guys, Sorry Ian, I was trying to narrow the case as much as possible. Actually, the trouble is that build process still generates ARM code even though it was configured with option --with-cpu=cortex-m0 and multilib disabled. Alas, I managed to build GCC for the target using the following args: ../gcc-4.5.0/configure --target=arm-none-eabi --with-mode=thumb --with-cpu=cortex-m0 --prefix=/f/cross-gcc/4.5.0 --disable-nls --disable-shared --disable-threads --with-gcc --with-gnu-ld --with-gnu-as --with-dwarf2 --enable-languages=c --disable-interwork --disable-multilib --with-newlib --with-headers=../../newlib-1.18.0/newlib-1.18.0/newlib/libc/include --disable-libssp --disable-libstdcxx-pch --disable-libmudflap --disable-libgomp --with-gmp=/f/cross-gcc/4.5.0 --with-mpfr=/f/cross-gcc/4.5.0 --with-mpc=/f/cross-gcc/4.5.0 -v Well, I would rather agree that it would have been silly to expect scripts to be as intelligent as to switch _default_ mode to thumb automatically by reading --with-cpu=cortex-m0 and --disable-multilib. Here I must thank Richard for a hint which could spare me a day had I not laboriously worked it out alone :-( Still I cannot figure out how to add Cortex-M0 support with multilib enabled. By default libraries for armv6-m are not built. I have to include interworking support as well. It looks like to build GCC with multilib enabled, one has to edit \gcc-4.5.0\gcc\config\arm\t-arm-elf file. Well I spent yesterday and could not find how to do it. It all ends up in error trying to compile test file with -march=armv6-m but without -mthumb. Is it possible to build multilib in one step or I should perform many builds and later copy libraries to appropritae folders? ----- Original Message ---- From: Ian Lance Taylor <iant@xxxxxxxxxx> To: Andriy Sukhynyuk <asukhynyuk@xxxxxxxxx> Cc: gcc-help@xxxxxxxxxxx Sent: Tue, August 31, 2010 7:55:18 PM Subject: Re: Cannot build GCC for Cortex-M0 Andriy Sukhynyuk <asukhynyuk@xxxxxxxxx> writes: > I have been trying to build cross toolchain for Cortex-M0 (using MinGW/msys) > for quite a while with no success. > I tried to run configure with many different arguments. > Particularly I am interested to know why the following line is successful for > > > > strongarm1110 build but if I change --with-cpu to --with-cpu=cortex-m0 the > build would fail with complaint"cannot compute suffix of object files". http://gcc.gnu.org/wiki/FAQ#configure_suffix Ian
