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Date:	Tue, 1 Sep 2015 22:10:44 -0700
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Subject:	Re: different binary output with 32- and 64-bit hosted compilers
From:	"Louis Santillan (lpsantil AT gmail DOT com) [via djgpp AT delorie DOT com]" <djgpp AT delorie DOT com>
To:	"djgpp AT delorie DOT com" <djgpp AT delorie DOT com>
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The cross compilers will.  See Andrew Wu's binaries [0].


[0] https://github.com/andrewwutw/build-djgpp/releases

On Tue, Sep 1, 2015 at 9:21 PM, Peter Bailie (prbailie AT yahoo DOT com) [via
djgpp AT delorie DOT com] <djgpp AT delorie DOT com> wrote:
> I'm not sure but from your email is there a djgpp that runs on a 64 bit
> operating system?   The current djgpp source files that I have will not run
> on my windows 7 64 bit operating system.  Thank you for any info you can
> give me.
>
>
>
> On Tuesday, September 1, 2015 8:22 AM, "Ozkan Sezer (sezeroz AT gmail DOT com) [via
> djgpp AT delorie DOT com]" <djgpp AT delorie DOT com> wrote:
>
>
> 32-bit (i686-linux fedora-9) and 64-bit (x86_64-linux fedora-20) hosted
> djgpp-targeting compiler generates different output for some sources.
> This happens with djgpp source itself too, and it isn't a nice thing
> and was not an expected thing for me. Did the following with gcc-3.4.6:
>
> Compiled djgpp-cvs with a 32- and 64-bit hosted toolchain (gcc-3.4.6
> and binutils-2.25.1), then did:
> diff -urp --exclude=*.d --exclude=id_*.o --exclude=stub* \
>   --exclude=*.tex --exclude=*.exe --exclude=djasm.c \
>   32/src 64/src > 64.diff
> ... which results in this:
>
> Binary files 32/src/debug/fsdb/expr.o and 64/src/debug/fsdb/expr.o differ
> Binary files 32/src/libc/ansi/stdio/doprnt.o and
> 64/src/libc/ansi/stdio/doprnt.o differ
> Binary files 32/src/libc/ansi/stdlib/strtoll.o and
> 64/src/libc/ansi/stdlib/strtoll.o differ
> Binary files 32/src/libc/compat/stdlib/rand48.o and
> 64/src/libc/compat/stdlib/rand48.o differ
> Binary files 32/src/libc/posix/sys/stat/lfilelen.o and
> 64/src/libc/posix/sys/stat/lfilelen.o differ
> Binary files 32/src/libc/posix/unistd/lseek.o and
> 64/src/libc/posix/unistd/lseek.o differ
> Binary files 32/src/libm/math/llroundl.o and 64/src/libm/math/llroundl.o
> differ
> Binary files 32/src/libm/math/lroundl.o and 64/src/libm/math/lroundl.o
> differ
> Binary files 32/src/libm/math/roundl.o and 64/src/libm/math/roundl.o differ
> Binary files 32/src/libm/math/trunc.o and 64/src/libm/math/trunc.o differ
>
> So I added -save-temps to the relevant sources' EXTRA_CFLAGS in the
> makefiles and repeated the experiment, and ran diff like:
> diff -urp --exclude=*.o --exclude=*.i --exclude=*.d --exclude=id_*.o \
>   --exclude=stub* --exclude=*.tex --exclude=*.exe --exclude=djasm.c \
>   32/src 64/src > 64x.diff
>
> ... which generated the attached output (Attached: 64x.diff.gz)
>
> Didn't try with any other gcc version (at least not yet).
> Can anyone reproduce?
>
> --
> O.S.
>
>

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