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Full Discussion: 64 bit Porting Problem !!!
Operating Systems Linux SuSE 64 bit Porting Problem !!! Post 302275822 by otheus on Monday 12th of January 2009 09:15:52 AM
Old 01-12-2009
I have gcc 4.1.1 installed. Maybe you have an older version. If so, this might not apply to you.

I am not familiar with the options you mentioned, but the v9 is definitely SPARC architecture specific. Using "-m64" will produce code for the 64-bit platform, which would be the default anyway. ints will be 32 bits, and pointers and longs will be 64-bits. You could use -mabi=32 will generate 32-bit code for your 64-bit platform. This might result in an inability to link against 64-bit libraries, but if you have 32-bit libraries also installed, it should work. You can do something similar with "-mlong32", which forces all longs and pointer types to 32 bits (but still uses the 64-bit abi so it could run on a 64 bit platform). It might be possible to combine -mlong-calls with this to ensure proper behavior with the linker, but that's just a WAG (wild ass guess).

I thought there was a way to tell the compiler to treat an "int" as 64-bits, but I cannot find an option for that in the manual. You can always use the preprocessor to try to change "int" into "long", but that might not work in some instances.

I found some links that might help:
http://gcc.fyxm.net/summit/2003/Port...2064%20bit.pdf

This link specifically says you must use gcc 4 and later, and mentions a few options pertinent to your task.
64-Bit Transition Guide: Compiling 64-Bit Code Using GCC
 

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FAUCC(1)																  FAUCC(1)

NAME
faucc - C compiler generating Intel code for 16 bit/32 bit CPUs. SYNOPSIS
faucc [ -B path ] [ -D MACRO [=def]] [ -E ] [ -I path ] [ -L path ] [ -MD ] [-MF file ] [ -MP ] [ -MT target ] [ -O level ] [ -S ] [ -T script ] [ -U macro ] [ -Wl,arg ] [ -Xlinker arg ] [ -b arch ] [ -c ] [ -f arg ] [ -m arch ] [ -nostdlib ] [ -o output ] [ -print-lib-faucc-file-name ] [ --freestanding ] [ --no-stack-protector ] { file ...} DESCRIPTION
faucc is a C compiler, that can generate Intel 16 bit or 32 bit Code. OPTIONS
faucc tries to mimic the options of gcc. A number of options will be passed to the C preprocessor cpp or to the linker (done via a call to the c-compiler gcc) in unmodified form. -B path Override the directory prefix where cc1 is looked up with path. -D MACRO, -D MACRO=def Define MACRO with the optional initial definition def. If def is omitted, it defaults to 1. -E Only perform preprocessing, but do not run the compiler. -I path Add path to the include path in which header files are searched. -L path Add path to the library search path, in which the linker will look for libraries. -MD Output dependency information while preprocessing. -MF, file Output dependency information while preprocessing to file. -MP, When the preprocessor should output dependency information, it will generate PHONY targets for each dependency. -MT target When the preprocessor should output dependency information, use target as the dependency rule target. -O level Currently ignored. -S Output assembly code. -T script Use script as linker script. -U macro Undefine a previously defined macro. -Wl,arg, -Xlinker arg Pass arg to the linker. -b arch Generate code for arch (either i286 or i386) -c Perform compilation, but do not link. -f arg Pass code generation argument arg to the compiler. See the cc1 man page for possible arguments. -m arch Currently ignored. -nostdlib With this option, the linker will only search for libraries that are passed as command line arguments. -o file Write output to file. -print-libfaucc-file-name Print the full path of the internal compiler library libfaucc.a. -static Perform static linking. --freestanding, --no-stack-protector Currently ignored. EXAMPLES
faucc -c hello-world.c -o hello-world.o Compile the program hello-world.c and output the object as hello-wolrd.o. faucc -S -b i286 -o test.s test.c Compile the program test.c to 16 bit code and output the assembly listing to test.s, but do not assemble or link the result yet. SEE ALSO
cc1(1) , cpp(1) , gcc(1) , ld(1) CONTACT
Please report all bugs to FAUcc Team <info@faumachine.org>. FAUcc Homepage [1]. AUTHOR
FAUcc Team COPYRIGHT
Copyright (C) 2009 FAUcc Team. Developed at Friedrich Alexander University Erlangen-Nuremberg. FAUcc comes with ABSOLUTELY NO WARRANTY. FAUcc is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. See COPYING for details. NOTES
1. FAUcc Homepage http://www.faumachine.org FAUcc Team 03/08/2009 FAUCC(1)
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