From mboxrd@z Thu Jan 1 00:00:00 1970 From: Nick Clifton To: Giuliano.Procida@red-m.com Cc: gcc@gcc.gnu.org Subject: Re: ARM/Thumb tool chain Date: Fri, 28 Jul 2000 10:47:00 -0000 Message-id: <200007281747.KAA02888@elmo.cygnus.com> X-SW-Source: 2000-07/msg00941.html Hi Giuliano, : > It seems that all multilib options are commented out in : > gcc/config/arm/t-arm-elf. : : Does anyone know why? Good question. There is no compelling reason to comment out the multilibs. It saves build and test time and reduces disk space requirements, but on the other hand it gives rise to problems like this. Note - the absence of a Thumb targeted libgcc.a should not be a great problem since the linker will automatically generate calling conversion stubs to switch between ARM and Thumb mode. In order to generate a set of Thumb multilibs apply the patch below and then rebuild everything. Cheers Nick Index: gcc/config/arm/t-arm-elf =================================================================== RCS file: /cvs/gcc/egcs/gcc/config/arm/t-arm-elf,v retrieving revision 1.11 diff -p -r1.11 t-arm-elf *** t-arm-elf 2000/04/08 14:29:52 1.11 --- t-arm-elf 2000/07/28 17:46:11 *************** dp-bit.c: $(srcdir)/config/fp-bit.c *** 21,26 **** --- 21,31 ---- echo '#endif' >> dp-bit.c cat $(srcdir)/config/fp-bit.c >> dp-bit.c + + MULTILIB_OPTIONS = marm/mthumb + MULTILIB_DIRNAMES = arm thumb + MULTILIB_EXCEPTIONS = + # MULTILIB_OPTIONS = mlittle-endian/mbig-endian # MULTILIB_DIRNAMES = le be # MULTILIB_EXCEPTIONS = *************** dp-bit.c: $(srcdir)/config/fp-bit.c *** 62,73 **** # MULTILIB_MATCHES += mcpu?arm7=mcpu?arm600 # MULTILIB_MATCHES += mcpu?arm7=mcpu?arm610 # MULTILIB_MATCHES += mcpu?arm7=mcpu?arm620 - # - # EXTRA_MULTILIB_PARTS = crtbegin.o crtend.o - # LIBGCC = stmp-multilib - # INSTALL_LIBGCC = install-multilib - MULTILIB_MATCHES = mbig-endian=mbe mlittle-endian=mle EXTRA_MULTILIB_PARTS = crtbegin.o crtend.o # If EXTRA_MULTILIB_PARTS is not defined above then define EXTRA_PARTS here --- 67,73 ----