I've built the static libraries for ICU 49 and 50 but when linking with either one of them I still get 667 linker errors like the ones below. How can I approach debugging this and figuring out what the problem is? The ICU support list has offered no help at all.

clang++ -ccc-gcc-name g++ -Wl,-E -o velocity main.o city.o auto_lua.o
obj_builder.o index.o obj.o str.o db.o datetime.o msg_parser.o
task_scheduler.o gc.o global_settings.o transaction.o schema.o
skip_node.o util.o thread_context.o hashtable_base.o attr.o
page_pool.o result_buffer.o server_epoll.o logging.o test_server.o
test_main.o     -L../lib -L/usr/lib/gcc/x86_64-linux-gnu/4.7 -lc++
-lllalloc -lluajit -ldl -lm -lrt -lboost_system -lboost_filesystem
-licuuc -licui18n -licudata -lgtest
../lib/libicui18n.a(ucol.ao): In function `uprv_new_collIterate_50':
ucol.cpp:(.text.uprv_new_collIterate_50+0x37): undefined reference to
`icu_50::UMemory::operator new(unsigned long)'
ucol.cpp:(.text.uprv_new_collIterate_50+0xd2): undefined reference to
`icu_50::UMemory::operator delete(void*)'
../lib/libicui18n.a(ucol.ao): In function `uprv_delete_collIterate_50':
ucol.cpp:(.text.uprv_delete_collIterate_50+0x2f): undefined reference
to `icu_50::UMemory::operator delete(void*)'
../lib/libicui18n.a(ucol.ao): In function `initializeFCD(UErrorCode*)':
ucol.cpp:(.text._ZL13initializeFCDP10UErrorCode+0x2c): undefined
reference to `icu_50::Normalizer2Factory::getNFCImpl(UErrorCode&)'
../lib/libicui18n.a(ucol.ao): In function `ucol_initCollator_50':
ucol.cpp:(.text.ucol_initCollator_50+0x126): undefined reference to
`utrie_unserialize_50'
../lib/libicui18n.a(ucol.ao): In function `ucol_prv_getSpecialCE_50':
ucol.cpp:(.text.ucol_prv_getSpecialCE_50+0x9f6): undefined reference
to `u_charDigitValue_50'
ucol.cpp:(.text.ucol_prv_getSpecialCE_50+0xc1f): undefined reference
to `u_charDigitValue_50'

Running nm on the compiled static libraries I see this:

nm -A libicu* | grep u_char
c++ static-libraries static-linking icu
Edit
Report