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Re: [Chicken-users] OS X 10.6 (Snow Leopard)


From: Derrell Piper
Subject: Re: [Chicken-users] OS X 10.6 (Snow Leopard)
Date: Sat, 29 Aug 2009 21:05:27 -0700

I was pretty surprised myself.  But it seems that's the path they chose:

fluffy% gcc test.c -o test
fluffy% file test
test: Mach-O 64-bit executable x86_64
fluffy% otool -h -v test
test:
Mach header
magic cputype cpusubtype caps filetype ncmds sizeofcmds flags MH_MAGIC_64 X86_64 ALL LIB64 EXECUTE 11 1536 NOUNDEFS DYLDLINK TWOLEVEL
fluffy% gcc -arch i386 test.c -o test
fluffy% file test
test: Mach-O executable i386
fluffy% otool -h -v test
test:
Mach header
magic cputype cpusubtype caps filetype ncmds sizeofcmds flags MH_MAGIC I386 ALL 0x00 EXECUTE 11 1172 NOUNDEFS DYLDLINK TWOLEVEL

Derrell

On Aug 29, 2009, at 8:32 PM, Jim Ursetto wrote:

Is it really true that 10.6 gcc defaults to producing 64-bit binaries?
I imagine that would break a lot of traditional UNIX builds.  If so
then we will need to either have better detection of bittedness or
simply force gcc to 32-bit mode unless the ARCH is specified as
64-bit.

64-bit works perfectly fine on OS X, except that you must remember to
build all your local libraries in 64-bit mode.  If 64-bit is now the
standard output format, then this is not an issue and we should prefer
64-bit when available.  I do not have a copy of 10.6 to play around
with yet though.

On Sat, Aug 29, 2009 at 9:56 PM, Jim Ursetto<address@hidden> wrote:
It might be easier to compile with

make PLATFORM=macosx ARCH=x86-64

as stated in the README.
Jim

On Sat, Aug 29, 2009 at 7:35 PM, Derrell Piper<address@hidden loft.org> wrote:
It appears that the native Xcode 3.2 build tools are now 64-bit on 10.6 and config-arch.sh isn't smart enough to distinguish the 64-bitness. As a result, it assembles the 32-bit apply-hack and then fails to construct
libchicken.a because there's a mix of 32-bit and 64-bit .o's.

To get a native 64-bit Chicken, you need to make sure apply- hack.x86-64.s is built. I just edited config-arch.sh and changed the 'x86' to 'x86-64':

30c30
<     i*86) echo "x86";;
---
    i*86) echo "x86-64";;

fluffy% csi

CHICKEN
(c)2008 The Chicken Team
(c)2000-2007 Felix L. Winkelmann
Version 3.4.0 - macosx-unix-gnu-x86-64 [ 64bit manyargs dload ptables
applyhook ]
compiled 2009-08-29 on fluffy.local (Darwin)



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