While building Wine (latest git) on Mac OS X, I noticed this:

/usr/bin/nm: object: amstream_test.MDsdpi.o malformed object (LC_SEGMENT
command 0 filesize field greater than vmsize field)
Undefined symbols:
"_GetDesktopWindow", referenced from:
_func_amstream in amstream.o
"_TlsGetValue", referenced from:
_get_tls_data in testlist.o
"_MultiByteToWideChar", referenced from:
_func_amstream in amstream.o
_func_amstream in amstream.o
"_CloseHandle", referenced from:
_func_amstream in amstream.o
"_TlsSetValue", referenced from:
_get_tls_data in testlist.o
"_DirectDrawCreate", referenced from:
_func_amstream in amstream.o
"_CoCreateInstance", referenced from:
_create_ammultimediastream in amstream.o
"_WaitForSingleObject", referenced from:
_winetest_wait_child_process in testlist.o
"_CoInitializeEx", referenced from:
_func_amstream in amstream.o
"_HeapAlloc", referenced from:
_get_tls_data in testlist.o
"_CoUninitialize", referenced from:
_func_amstream in amstream.o
_func_amstream in amstream.o
"_GetExitCodeProcess", referenced from:
_winetest_wait_child_process in testlist.o
"_GetEnvironmentVariableA", referenced from:
_main in testlist.o
_main in testlist.o
_main in testlist.o
_main in testlist.o
"_ExitProcess", referenced from:
_exit_process in testlist.o
___wine_spec_exe_entry in libwinecrt0.a(exe_entry.o)
"_CreateFileA", referenced from:
_func_amstream in amstream.o
_func_amstream in amstream.o
"_TlsAlloc", referenced from:
_run_test in testlist.o
ld: symbol(s) not found
collect2: ld returned 1 exit status
winegcc: gcc failed
make[1]: *** [amstream_test.exe.so] Error 2
make: *** [dlls/amstream/tests] Error 2

Something's gone horribly wrong. Winebuild shouldn't be generating
b0rken Mach-O files. What gives?