James Mills wrote:
How are you guys goins with crosscompiling ?
I'd like to be able to cross compile from Debian/Linux to various other
platforms... Or have you been crosscompiling the other way ?
First of all, you need binutils, compiled with support for the targets
you want. Get the source, read the docs, and enable the targets you
want, then compile it. It's C, so you need gcc environment.
http://www.gnu.org/directory/GNU/binutils.html
If you manage to compile the binutils successfully you should end up
having as, ld, strip, etc... that support your target os & cpu.
You could also try looking for some precompiled binaries of the
binutils, for the target you want.
After that you can do: ppc386 -Tyour_target_os
-FD/path_to_cross_binutils yourfile.pas
You also need the Free Pascal RTL (and other OS-specific units), you can
get them precompiled from the fpc website. They are part of the fpc
binary distribution for your target os.
... or you can compile them yourself using the fpc source, but that's
somewhat more complicated.
If you want to compile for another cpu (fpc 1.0.10 supports i386 and
m68k; fpc 1.1 currently supports i386, powerpc and sparc) then you
*must* compile the compiler. You can read the fpc docs, for compiling
the compiler... :)
IIRC it was something like "make CPU_TARGET=m68k" in the compiler dir
for the motorola 680x0 (ppc for powerpc, i386 for i386, sparc for sparc
:) )... You end up having a ppc68k executable. Then you go to the rtl
directory and compile the rtl using this new ppc68k "make PP=ppc68k
OPT=-FD/path_to_cross_binutils" Perhaps you also need to add
OPT=-Tyour_target_os... I did it 2 weeks ago (I compiled a crosscompiler
for m68k amiga), and this is what I remember... There might be some
mistakes here... just read the docs, read the fpc compiler options and
play with it, until you get it working... :)
And you're done.
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