Android NDK clang on OSX

build/src/tools/clang-darwin.jam does

actions piecemeal archive
{
"$(.AR)" $(AROPTIONS) rc "$(<)" "$(>)"
"ranlib" -cs "$(<)"
}

which ignores `` and `` from any .bjam config.

This is bad when trying to set up an Android cross compile using clang (and it's very disturbing when everything "just worked" for Android g++/NDK....)

Everything installs nicely, but with a minor warning

warning: ranlib: warning for library: /tmp/build/armeabi/boost/boost/bin.v2/libs/system/build/clang-darwin-android/release/link-static/target-os-android/threading-multi/libboost_system.a the table of contents is empty (no object file members in the library define global symbols)

and when you try to use the library with CMake/NDK it fails with

libboost_program_options.a: no archive symbol table (run ranlib)

It seems odd that the Android NDK bundles up everything as the same version (takes the same flags, makes the same output) across Windows/OSX/linux but the boost configuration options shard the handling across the host type.