Sorry, I'm sure, this is a very basic question,
just to speed up things a little ...
when I run the compiler on Windows on my test sources,
everythings works fine.
Now I wanted to build executables for OS/2 and Linux-386,
just to learn more about cross-compile. But the installed compiler-exe
(which came with Lazarus) only supports the win32 target.
The compiler message is as follows:
C:\fpc_test>ppc386 -Tos2 pasform.pas
Free Pascal Compiler version 2.6.2 [2013/06/09] for i386
Copyright (c) 1993-2012 by Florian Klaempfl and others
Target OS: OS/2
Compiling pasform.pas
Fatal: Can't find unit system used by PASFORM
Fatal: Compilation aborted
Same goes for -Tlinux
Of course, I have to build a new compiler. Or: do I misinterpret
the error message?
I downloaded the development tree using svn.
What is the easiest way to build a new compiler, and:
will it be possible to build a compiler that is able to build
different targets at the same time?
Kind regards
Bernd
Am 24.07.2013 11:46, schrieb Sven Barth:
Am 24.07.2013 03:41, schrieb Bernd Oppolzer:
- when I completed this, I would like to experiment with FPC, trying
to build a compiler
from the source tree, for a new target CPU and OS, that is, IBMZ. I
know enough about
IBM machine code, ASSEMBLER, opsys and run time systems. In contrast
to the discussions
that I saw already (targetting zLinux with ASCII codebase), I plan to
build a FPC compiler
which works on BOTH codebases - I want to know, where the issues are.
You should split this into two steps (which is the usual approach):
- first create a cross compiler; thus a compiler which compiles Pascal
programs for IBMZ. This way you can implement the RTL and do testsuite
runs
- once the cross compiler and the programs it compiles runs
satisfactory you can try to compile the compiler for IBMZ
You'll also need either cross binutils (e.g. i386-linux ->
whatever-ibmz) (containing "as" and "ld") or you'll need to write your
own assembler writer and a linker (or you'll need to use "assemble on
target" option). For the first step the first variant is suggested.
On the IBMZ itself you'll also need to have binutils available except
you decide to use an internal assembler/linker.
Note: you don't necessarily need GNU assembler and linker, but
otherwise you'll need to write support for it in the compiler.
Regards,
Sven
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