Re: Xcode lets me link a Universal static library against thin static libraries
Re: Xcode lets me link a Universal static library against thin static libraries
- Subject: Re: Xcode lets me link a Universal static library against thin static libraries
- From: Rush Manbert <email@hidden>
- Date: Mon, 03 Apr 2006 15:00:15 -0700
Chris Espinosa wrote:
On Apr 1, 2006, at 10:13 PM, Rush Manbert wrote:
Rush Manbert wrote:
Chris Espinosa wrote:
On Mar 31, 2006, at 4:38 PM, Rush Manbert wrote:
Hi again,
As Bullwinkle always said about pulling a rabbit out of his hat,
"This time for SURE!" ;-)
I have a project whose only target builds a BSD static library.
It links against a bunch of other BSD static libraries. I
previously built it only for ppc. Now I want to build it as a
Universal library. I changed the Xcode project by adding the
second architecture type, but I didn't change my library search
paths for the other static libraries. This meant that I was
linking my fat static lib against thin static libs.
Xcode did not complain about this, at least not when I built the
Debug version. The build said it completed successfully.
I did not change any SDK settings, and I did not try to build the
Release version.
For most project templates, the Debug configuration sets ARCHS = $
(NATIVE_ARCH), and the Release configuration sets ARCHS = ppc
i386. So if you just built debug and not release, this is
expected, and not a bug.
If you built Release and did not get an error, it would be a bug.
If you changed Architectures in the Debug configuration to be ppc
i386 and did not get an error, it would be a bug. We have no bug
reports like this at this time.
Chris
Thanks Chris. Sorry for the red herring earlier.
I changed Debug so ARCHES = ppc i386 and didn't get an error. I'll
file the bug.
Bug filed. Number 4499172.
Your debug target is still being built with ZeroLink. ZeroLink speeds
up build-launch time by skipping the linker. You are getting no link
errors about the missing architecture because you are not linking.
I unchecked "Allow ZeroLink" in the Build menu, rebuilt, and got the
expected link error:
Undefined Symbols:
/Volumes/Local/Objects/Debug/libfat/a(fatLibSrc.o) reference to
undefined thinLibReport()
collect2: ld returned 1 exit status
The two static library targets do NOT have Zero Link enabled. The issue
is not whether the app builds or not. I believe that it correctly does
not build. The problem is that the "fat" static library target builds
even though the "thin" target creates a thin library. Please take
another look.
- Rush
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