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single-object prelink warnings, empty i386 TOC

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single-object prelink warnings, empty i386 TOC

Subject: single-object prelink warnings, empty i386 TOC
From: Steve Christensen <email@hidden>
Date: Sun, 4 Jun 2006 13:01:13 -0700

One of my targets is a static library containing common code that the rest of the targets used. Just to see if there's any difference in how things work, I turned on "perform single-object prelink." When I do so, the build log spits out several unexpected messages. Is this a configuration problem on my end or something that Xcode's not doing correctly?

Here are the relevant build settings, pulled from the project file:

ARCHS = (
	ppc,
	i386,
);
COPY_PHASE_STRIP = YES;
GCC_DEBUGGING_SYMBOLS = full;
GCC_INCREASE_PRECOMPILED_HEADER_SHARING = YES;
GCC_INLINES_ARE_PRIVATE_EXTERN = YES;
GCC_OPTIMIZATION_LEVEL = s;
GCC_PFE_FILE_C_DIALECTS = "c++ objective-c++";
GCC_PRECOMPILE_PREFIX_HEADER = YES;
GCC_SYMBOLS_PRIVATE_EXTERN = YES;
GCC_VERSION_ppc = 3.3;
GENERATE_MASTER_OBJECT_FILE = YES;
MACH_O_TYPE = staticlib;
MACOSX_DEPLOYMENT_TARGET_i386 = 10.4;
MACOSX_DEPLOYMENT_TARGET_ppc = 10.3;
PREBINDING = NO;
PRECOMPS_INCLUDE_HEADERS_FROM_BUILT_PRODUCTS_DIR = NO;
SDKROOT = /Developer/SDKs/MacOSX10.4u.sdk;
STRIP_INSTALLED_PRODUCT = NO;
STRIP_STYLE = "non-global";


And here's a portion of the build log:

MasterObjectLink "Foo.build/Objects-normal/libFoo.o-ppc-master.o" cd ... /usr/bin/ld -r -arch ppc ... -o Foo.build/Objects-normal/ libFoo.o-ppc-master.o /usr/bin/ld: warning weak symbol references not set in output with MACOSX_DEPLOYMENT_TARGET environment variable set to: 10.1 /usr/bin/ld: warning weak referenced symbols: [list of Carbon API symbols]

MasterObjectLink "Foo.build/Objects-normal/libFoo.o-i386-master.o" cd ... /usr/bin/ld -r -arch i386 ... -o Foo.build/Objects-normal/ libFoo.o-i386-master.o

Libtool "Foo.build/Objects-normal/ppc/libFoo.o" normal ppc
    cd ...
    setenv MACOSX_DEPLOYMENT_TARGET 10.3
    /usr/bin/libtool
        -static -arch_only ppc
        -o Foo.build/Objects-normal/ppc/libFoo.o
        -LOutput/Intermediate\ Pieces
        -framework Carbon
        -framework QuickTime
        -filelist Foo.build/Objects-normal/ppc/Foo.LinkFileList
        -syslibroot /Developer/SDKs/MacOSX10.4u.sdk

Libtool "Foo.build/Objects-normal/i386/libFoo.o" normal i386 cd ... setenv MACOSX_DEPLOYMENT_TARGET 10.4 /usr/bin/libtool -static -arch_only i386 -o Foo.build/Objects-normal/i386/libFoo.o -LOutput/Intermediate\ Pieces -framework Carbon -framework QuickTime -filelist Foo.build/Objects-normal/i386/Foo.LinkFileList -syslibroot /Developer/SDKs/MacOSX10.4u.sdk /usr/bin/libtool: warning for library: Foo.build/Objects-normal/i386/ libFoo.o the table of contents is empty (no object file members in the library define global symbols)

CreateUniversalBinary "Output/Intermediate Pieces/libFoo.o" normal "ppc i386" cd ... /usr/bin/libtool -static Foo.build/Objects-normal/ppc/libFoo.o Foo.build/Objects-normal/i386/libFoo.o -o libFoo.o /usr/bin/libtool: warning for library: libFoo.o for architecture: i386 the table of contents is empty (no object file members in the library define global symbols)

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