Re: Getting closer (was Re: cross-compiler build: can't find stdio.h)

[Bill Currie <bcurrie@tssc.co.nz>]

John Breen wrote:
> So you were close: it's crt0.o that's missing.  Obviously I don't have a
> crt0.o, since I don't have a compiler yet (to answer your previous
> question, this is for an in-house developed embedded system; all I have
> for headers and libs is what comes in egcs or newlib).

Doh! forgot about crt0.o.  That was my first problem (libc.a came next,
I think), but I provided my own as the mtos crt0.o was very suboptimal.

> I could copy over the m68k crt0.S from newlib and see if I can assemble
> it myself with what's there, but should I really have to do things like
> that?

No, get the cross-FAQ (look in the egcs faq under cross compiling for
it's location).  It will tell you how to do a full tool-chain (including
libs) build.  Here's the relevant section (don't worry about the version
numbers and I recomment grabbing the dirs common between binutils and
egcs from egcs):

---

3.2 One Pass Installation

Is there an easier way?  Yes!
If you study the top-level Makefile that comes with binutils-2.7,
newlib-1.7.1, or gdb-4.16, you'll see that they're all quite similar
(not surprising since they're essentially the same file).

You'll also discover that it is capable of building and installing the
entire toolchain in one pass.  The catch is that is assumes a directory
layout different than what would normally appear when you unpack the
sources.

You will need to apply the Cygnus crossgcc-gcc-2.7.2.1.patch.

What we now need to do is turn this directory layout

./binutils-2.7/
               bfd/
               binutils/
               config/
               gas/
               include/
               ld/
               libiberty/
               opcodes/
               texinfo/
./gcc-2.7.2.1/
./newlib-1.7.1/
               config/
               libgloss/
               newlib/
               texinfo/

into

./src/
      bfd/
      binutils/
      config/
      gas/
      gcc/
      include/
      ld/
      libgloss/
      libiberty/
      newlib/
      opcodes/
      texinfo/

-- 
Leave others their otherness