I'm building Boost for Android. I've edited the user-config.jam file, and added something like the following:

using android : x86 : $(NDK_PATH)/toolchains/x86-4.4.3/prebuilt/linux-x86/i686-android-linux/bin/c++ :

To build, I add "toolset=android-x86" to the "bjam" command.
I'd like to specify an include path to be used by the compiler. I tried to use:
where "-I" specifies an include directory, but "bjam" seems to ignore it and omit it from the compilation (all other compileflags are passed correctly).

Is there a way to specify the include path as part of the toolset, so I don't need to specify it on each build command (using "include=...")?