osmium_index fails with linker error on osx

[tmcw]

c++ -O3 -std=c++11 -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -I../include -stdlib=libc++ -Wall -Wextra -pedantic -Wredundant-decls -Wdisabled-optimization -Wctor-dtor-privacy -Wnon-virtual-dtor -Woverloaded-virtual -Wsign-promo -Wold-style-cast -o osmium_index osmium_index.cpp -stdlib=libc++ -Wl,-Bstatic -lboost_program_options -Wl,-Bdynamic
ld: unknown option: -Bstatic
clang: error: linker command failed with exit code 1 (use -v to see invocation)

with c++:

examples➟ c++ -v
Apple LLVM version 5.0 (clang-500.2.79) (based on LLVM 3.3svn)
Target: x86_64-apple-darwin13.0.0
Thread model: posix