Definitive way to set up DCdev in Linux?

dospro · Post by **dospro** » Sun Nov 19, 2006 12:56 pm

Hi again.

Well, first, i needed to reinstall my linux os so i lost my dc compilers.
I tried again the full process and everything worked fine until i got to compile KOS.
Everything went smoothly until:

Code: Select all

make -C  arm
make[5]: Entering directory `/home/dospro/DC/kos/kernel/arch/dreamcast/sound/arm'
/home/dospro/DC/arm/arm-elf/bin/arm-elf-as -mcpu=arm7 crt0.s -o crt0.o
Assembler messages:
Error: Invalid processor variant -mcpu=arm7
make[5]: *** [crt0.o] Error 1
make[5]: Leaving directory `/home/dospro/DC/kos/kernel/arch/dreamcast/sound/arm'
make[4]: *** [_dir_arm] Error 2
make[4]: Leaving directory `/home/dospro/DC/kos/kernel/arch/dreamcast/sound'
make[3]: *** [_dir_sound] Error 2
make[3]: Leaving directory `/home/dospro/DC/kos/kernel/arch/dreamcast'
make[2]: *** [all] Error 2
make[2]: Leaving directory `/home/dospro/DC/kos/kernel/arch'
make[1]: *** [_dir_arch] Error 2
make[1]: Leaving directory `/home/dospro/DC/kos/kernel'
make: *** [all] Error 255

Why is thi happening? the arm compiler compile well.
Any ideas?

henzenmann · Post by **henzenmann** » Wed Nov 22, 2006 7:57 pm

Hmm, this works fine for me with the dc-chain-0.1-gcc346 toolchain:

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make -C arm/
make: Entering directory `/home/chenz/workspace/dreamcast/kos/kernel/arch/dreamcast/sound/arm'
/usr/local/dc/arm-elf/bin/arm-elf-as -mcpu=arm7 crt0.s -o crt0.o
/usr/local/dc/arm-elf/bin/arm-elf-gcc -mcpu=arm7 -Wall -O2  -c main.c -o main.o
/usr/local/dc/arm-elf/bin/arm-elf-gcc -mcpu=arm7 -Wall -O2  -c aica.c -o aica.o
/usr/local/dc/arm-elf/bin/arm-elf-gcc -Wl,-Ttext,0x00000000 -nostartfiles -nostdlib -e reset -o prog.elf crt0.o main.o aica.o -lgcc
/usr/local/dc/arm-elf/bin/arm-elf-objcopy -O binary prog.elf stream.drv
make: Leaving directory `/home/chenz/workspace/dreamcast/kos/kernel/arch/dreamcast/sound/arm'

The thing that comes to mind is that in recent toolchains, the arm target is explicitly set to "armv4". Maybe it would help to replace "-mcpu=arm7" with "-march=armv4" in kos/environ_dreamcast.sh?

Phantom · Post by **Phantom** » Wed Nov 22, 2006 8:48 pm

I think you're using a very old (pre-2.12) binutils. Replacing -mcpu=arm7 with -marm7 (which is deprecated/broken in newer binutils) might fix the problem.

dospro · Post by **dospro** » Thu Nov 23, 2006 4:41 pm

Are the new versions of binutils compatible with KOS?

Phantom · Post by **Phantom** » Thu Nov 23, 2006 4:54 pm

dospro wrote:Are the new versions of binutils compatible with KOS?

Yes.