我的libxml2有问题。当我尝试update_dyld_shared_cache时，它会说：
update_dyld_shared_cache failed: flat namespace not supported in /usr/lib/libxml2.2.dylib
我用这种方式编译了libxml2：
./configure --prefix=/usr --disable-dependency-tracking
make CFLAGS='-arch i386 -arch x86_64 -arch ppc -arch ppc64' LDFLAGS='-flat_namespace'
我哪里错了？
更新
Liking似乎实际上使用了flat-nampespace标志：
/bin/sh ./libtool --tag=CC --mode=link gcc -arch i386 -arch x86_64 -arch ppc -arch ppc64 -version-info 9:2:7 -flat_namespace -o libxml2.la -rpath /usr/lib SAX.lo entities.lo encoding.lo error.lo parserInternals.lo parser.lo tree.lo hash.lo list.lo xmlIO.lo xmlmemory.lo uri.lo valid.lo xlink.lo HTMLparser.lo HTMLtree.lo debugXML.lo xpath.lo xpointer.lo xinclude.lo nanohttp.lo nanoftp.lo DOCBparser.lo catalog.lo globals.lo threads.lo c14n.lo xmlstring.lo xmlregexp.lo xmlschemas.lo xmlschemastypes.lo xmlunicode.lo xmlreader.lo relaxng.lo dict.lo SAX2.lo xmlwriter.lo legacy.lo chvalid.lo pattern.lo xmlsave.lo xmlmodule.lo schematron.lo -lpthread -lz -liconv -lm
gcc -dynamiclib ${wl}-flat_namespace ${wl}-undefined ${wl}suppress -o .libs/libxml2.2.dylib .libs/SAX.o .libs/entities.o .libs/encoding.o .libs/error.o .libs/parserInternals.o .libs/parser.o .libs/tree.o .libs/hash.o .libs/list.o .libs/xmlIO.o .libs/xmlmemory.o .libs/uri.o .libs/valid.o .libs/xlink.o .libs/HTMLparser.o .libs/HTMLtree.o .libs/debugXML.o .libs/xpath.o .libs/xpointer.o .libs/xinclude.o .libs/nanohttp.o .libs/nanoftp.o .libs/DOCBparser.o .libs/catalog.o .libs/globals.o .libs/threads.o .libs/c14n.o .libs/xmlstring.o .libs/xmlregexp.o .libs/xmlschemas.o .libs/xmlschemastypes.o .libs/xmlunicode.o .libs/xmlreader.o .libs/relaxng.o .libs/dict.o .libs/SAX2.o .libs/xmlwriter.o .libs/legacy.o .libs/chvalid.o .libs/pattern.o .libs/xmlsave.o .libs/xmlmodule.o .libs/schematron.o -lpthread -lz /usr/lib/libiconv.dylib -lm -arch i386 -arch x86_64 -arch ppc -arch ppc64 -install_name /usr/lib/libxml2.2.dylib -compatibility_version 10 -current_version 10.2
(cd .libs && rm -f libxml2.dylib && ln -s libxml2.2.dylib libxml2.dylib)
(cd .libs && rm -f libxml2.2.7.2.dylib && ln -s libxml2.2.dylib libxml2.2.7.2.dylib)
ar cru .libs/libxml2.a SAX.o entities.o encoding.o error.o parserInternals.o parser.o tree.o hash.o list.o xmlIO.o xmlmemory.o uri.o valid.o xlink.o HTMLparser.o HTMLtree.o debugXML.o xpath.o xpointer.o xinclude.o nanohttp.o nanoftp.o DOCBparser.o catalog.o globals.o threads.o c14n.o xmlstring.o xmlregexp.o xmlschemas.o xmlschemastypes.o xmlunicode.o xmlreader.o relaxng.o dict.o SAX2.o xmlwriter.o legacy.o chvalid.o pattern.o xmlsave.o xmlmodule.o schematron.o
ranlib .libs/libxml2.a
更新
otools显示：
$ otool -hV /usr/lib/libxml2.2.dylib
/usr/lib/libxml2.2.dylib:
Mach header
magic cputype cpusubtype caps filetype ncmds sizeofcmds flags
MH_MAGIC I386 ALL 0x00 DYLIB 12 1348 DYLDLINK NO_REEXPORTED_DYLIBS
$ otool -L /usr/lib/libxml2.2.dylib
/usr/lib/libxml2.2.dylib:
/usr/lib/libxml2.2.dylib (compatibility version 10.0.0, current version 10.2.0)
/usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 111.1.7)
/usr/lib/libz.1.dylib (compatibility version 1.0.0, current version 1.2.3)
/usr/lib/libiconv.2.dylib (compatibility version 7.0.0, current version 7.0.0)
/usr/lib/libgcc_s.1.dylib (compatibility version 1.0.0, current version 1.0.0)
更新
我尝试使用lipo创建通用库，但似乎它已经破坏了某些东西。将通用库复制到/usr/lib后，update_dyld_shared_cache说了这个：
update_dyld_shared_cache failed: in /System/Library/Frameworks/Foundation.framework/Versions/C/Foundation can't find dylib /usr/lib/libxml2.2.dylib