first stab at a cross compiler ...

[Kai Ruottu]

15.4.2011 17:24, kevin diggs kirjoitti:

> I tried 4.3.5 with its fancy --with-build-time-tools configure option.

Hmmm, this seems to be for using some alternative tools, not the
default native ones in '/usr/bin'...

> This one died saying something about:
>
> undefined reference to `m68k_cpu_flags'
>
> while trying to link Tcollect2:
>
> make[2]: Entering directory `/home/kevdig/projects/GCC/obj-gcc-4.3.5-m68k/gcc'
> gcc   -O2 -march=pentium3 -fomit-frame-pointer -DIN_GCC
> -DCROSS_DIRECTORY_STRUCTURE  -W -Wall -Wwrite-strings
> -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition
> -Wmissing-format-attribute -pedantic -Wno-long-long
> -Wno-variadic-macros 				     -Wno-overlength-strings
> -DHAVE_CONFIG_H  -o Tcollect2 \
> 		collect2.o tlink.o intl.o version.o ../libcpp/libcpp.a
> ./libiberty/libiberty.a ../libdecnumber/libdecnumber.a

I seemingly had the same problem, the 'gcc/config/m68k/netbsd-elf.h' was
patched like :

---------------------- clip -----------------------------------------
*** netbsd-elf.h.orig   2007-08-02 13:49:31.000000000 +0300
--- netbsd-elf.h        2011-03-08 17:28:11.000000000 +0200
***************
*** 53,62 ****
--- 53,66 ----

   #undef TARGET_VERSION
   #define TARGET_VERSION                        \
+   fprintf (stderr, " (NetBSD/m68k ELF)");
+
+ /*
     fprintf (stderr,                    \
            TARGET_68010                 \
            ? " (NetBSD/68010 ELF)"      \
            : " (NetBSD/m68k ELF)");
+ */


   /* Provide a CPP_SPEC appropriate for NetBSD m68k targets.  Currently we
---------------------- clip -----------------------------------------

The 'TARGET_68010' triggers looking at which the target CPU is...
But the code for the cross host shouldn't need to include these
things.

> This means 4.3.5 found all of its little internal binutils goodies, right!??

Yes, the build/host ones! The 'collect2' of course is an executable made
for the cross host just like 'xgcc', 'cc1', 'cc1plus',...

> How far did this one get?

Not far enough :(