2011/12/14 Sascha Hauer <s.hauer@xxxxxxxxxxxxxx>: > Hi Franck, > > On Wed, Dec 14, 2011 at 12:14:08AM +0100, Franck JULLIEN wrote: >> Hi, >> >> I'm doing some tests with the openrisc processor. As I'm building >> barebox I have a question >> related to the linking of barebox. >> >> In order to get uint64 arithmetic functions, I need to add "-L $(shell >> dirname `$(CC) $(CFLAGS) -print-libgcc-file-name`) -lgcc" >> to the final link (only way ? found this in uboot). >> >> However, if I do this using LDFLAGS_barebox I get : >> >> /opt/crosstool/or32/or32-elf/bin/or32-elf-ld -Map barebox.map -L >> /opt/crosstool/or32/or32-elf-1.0rc1/bin/../lib/gcc/or32-elf/4.5.1-or32-1.0rc4 >> -lgcc -o barebox -T arch/openrisc/cpu/barebox.lds --start-group >> common/built-in.o drivers/built-in.o commands/built-in.o >> lib/built-in.o crypto/built-in.o net/built-in.o fs/built-in.o >> arch/openrisc/boards/generic/built-in.o arch/openrisc/lib/built-in.o >> arch/openrisc/cpu/built-in.o --end-group >> >> And it doesn't work. It works if "-L >> /opt/crosstool/or32/or32-elf-1.0rc1/bin/../lib/gcc/or32-elf/4.5.1-or32-1.0rc4 >> -lgcc" is at the end of the command line: >> >> /opt/crosstool/or32/or32-elf/bin/or32-elf-ld -Map barebox.map -o >> barebox -T arch/openrisc/cpu/barebox.lds --start-group >> common/built-in.o drivers/built-in.o commands/built-in.o >> lib/built-in.o crypto/built-in.o net/built-in.o fs/built-in.o >> arch/openrisc/boards/generic/built-in.o arch/openrisc/lib/built-in.o >> arch/openrisc/cpu/built-in.o --end-group -L >> /opt/crosstool/or32/or32-elf-1.0rc1/bin/../lib/gcc/or32-elf/4.5.1-or32-1.0rc4 >> -lgcc >> >> Any idea on why this is happening ? >> >> The only way I found to fix this is to move LDFLAGS_barebox in the >> main Makefile: >> >> - cmd_barebox__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_barebox) -o $@ \ >> + cmd_barebox__ ?= $(LD) $(LDFLAGS) -o $@ \ >> -T $(barebox-lds) $(barebox-head) \ >> - --start-group $(barebox-common) --end-group \ >> + --start-group $(barebox-common) --end-group $(LDFLAGS_barebox) >> \ >> $(filter-out $(barebox-lds) $(barebox-common) FORCE ,$^) >> >> What do you think about this problem ? > > The kernel currently does it the same way for openrisc. The other > architectures have there own implementation of the 64bit arithmetix > functions inside the kernel (and barebox) which is IMO cleaner. Maybe > you can grab them from the gcc source code and use them in barebox > instead. > > Sascha > > -- > Pengutronix e.K. | | > Industrial Linux Solutions | http://www.pengutronix.de/ | > Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | > Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 | Ok thanks, I'll see what I can do. _______________________________________________ barebox mailing list barebox@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/barebox
