[lldb-dev] build failure

[via lldb-dev]

[ 93%] Linking CXX executable ../../../../bin/lldb-server
../../../../lib/liblldbUtility.a(Log.cpp.o): In function 
`lldb_private::Log::Initialize()':
Log.cpp:(.text._ZN12lldb_private3Log10InitializeEv+0x11): undefined reference 
to `pthread_atfork'
collect2: error: ld returned 1 exit status
make[2]: *** [tools/lldb/tools/lldb-server/CMakeFiles/lldb-server.dir/
build.make:342: bin/lldb-server] Error 1
make[1]: *** [CMakeFiles/Makefile2:82665: tools/lldb/tools/lldb-server/
CMakeFiles/lldb-server.dir/all] Error 2