Compiling ESR 31 is broken with our Mac OS X cross-compiler
We get:
/home/ubuntu/build/x-tools/x86_64-apple-darwin10/bin/x86_64-apple-darwin10-clang++ -arch i386 -isysroot /usr/lib/apple/SDKs/MacOSX10.6.sdk -fPIC -Qunused-arguments -Wall -Wpointer-arith -Woverloaded-virtual -Werror=return-type -Werror=int-to-pointer-cast -Wtype-limits -Wempty-body -Wsign-compare -Wno-invalid-offsetof -Wno-c++0x-extensions -Wno-extended-offsetof -Wno-unknown-warning-option -Wno-return-type-c-linkage -Wno-mismatched-tags -fno-exceptions -fno-strict-aliasing -frtti -fno-exceptions -fno-math-errno -std=gnu++0x -pthread -DNO_X11 -pipe -UDEBUG -DNDEBUG -O3 -W -Wall -pedantic -Wpointer-arith -Wwrite-strings -Wno-long-long -framework ExceptionHandling -framework Cocoa -lobjc -o ../../bin/makeconv makeconv.o ucnvstat.o genmbcs.o gencnvex.o -L../../lib -licutu -L../../lib -licui18n -L../../lib -licuuc -L../../stubdata -licudata -lpthread -lm
ld: in ../../lib/libicutu.a, archive has no table of contents for architecture i386
x86_64-apple-darwin10-clang: error: linker command failed with exit code 1 (use -v to see invocation)