Re: how can I back down to Xcode 2.2.1, gcc 4.0.0?
Re: how can I back down to Xcode 2.2.1, gcc 4.0.0?
- Subject: Re: how can I back down to Xcode 2.2.1, gcc 4.0.0?
- From: Steve Christensen <email@hidden>
- Date: Sat, 3 Jun 2006 18:31:39 -0700
On Jun 3, 2006, at 5:14 PM, Shawn Erickson wrote:
On Jun 3, 2006, at 4:21 PM, Steve Christensen wrote:
I have been having so many problems since upgrading to Xcode 2.3
and gcc 4.0.1 that I just want to go back to Xcode 2.2.1 and gcc
4.0.0. Universal projects that previously built and ran on both
architectures with the older tools only run on PPC. The i386 image
in the UB binary is about 4K in size and apparently doesn't
contain anything resembling code.
Also, no hints have been forthcoming from the Xcode mailing list
so I don't know what to do to try to fix things. All I know is
that I have to get software finished and out the door.
In trying to back down to Xcode 2.2.1, etc., I have run the Xcode
2.3 uninstall script, restarted, then run the Xcode 2.2.1
installer, restarted. I rebuild my projects and I end up in the
same place as with 2.3. I've even tried running the Xcode 2.2.1
gcc installer standalone to see if that helps but nothing changes.
I'm really hoping that I don't have to reinstall the OS so all the
other stuff gets wiped and then get back to a known state.
My move from CodeWarrior to Xcode has been an entirely frustrating
process at every step of the way. Every little setting has to be
exactly perfect or nothing works as expected. Plus, doing what
should be a simple tool upgrade throws everything up in the air
again, just when I thought I had everything at least somewhat
settled.
I don't think I'm doing anything fancy. I just want a set of
Universal, dead-code stripped, symbol stripped executables. I
don't think that's really what you'd call off-roading. Can
somebody, perhaps even at Apple, help me out?
I think we will need more information. I have hit no issues
switching several projects (some rather large) from Xcode 2.2.1 to
2.3 and on several different developer systems (including switching
some over to DWARF).
I didn't think I had either since, after installing Xcode 2.3 and
doing a full, clean rebuild, everything was working fine on my PPC
development machine. It was only when I copied the binaries over to
my Intel MacBook that I found they wouldn't load. Running "nm -a -
arch all ..." would dump out all the global symbols for the PPC part
and "nm: no name list" for the i386 part. I also ran nm on the pre-
stripped, pre-combined per-architecture objects and they both showed
a ton of symbols for methods, data, etc.
Further examination showed that the Intel image within the Universal
binary was typically 4100 bytes, and "lipo -detailed_info ..." prints
out the following:
fat_magic 0xcafebabe
nfat_arch 2
architecture i386
cputype CPU_TYPE_I386
cpusubtype CPU_SUBTYPE_I386_ALL
offset 4096
size 4100
align 2^12 (4096)
architecture ppc
cputype CPU_TYPE_POWERPC
cpusubtype CPU_SUBTYPE_POWERPC_ALL
offset 16384
size 146628
align 2^14 (16384)
Are you sure that something in your code didn't change around the
same time as the switch to 2.3? ...maybe a wrongly placed #ifdef
that is engaged when building for Intel?
No. The code has been relatively unchanged for awhile now, and in any
case, there are almost no architecture-specific bits of code that
could get turned on/off conditionally.
steve
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