+# Build host Python before we start messing with the environment.
+$WGET http://python.org/ftp/python/$VER_PYTHON/Python-$VER_PYTHON.tar.xz
+tar xJf Python-$VER_PYTHON.tar.xz
+cd Python-$VER_PYTHON
+./configure
+make python $PARALLEL
+make Parser/pgen $PARALLEL
+mv python hostpython
+mv Parser/pgen Parser/hostpgen
+cd ..
+
+# -----------------------------------------------------------------------------
+
+# We need to find tools in the toolchain.
+export PATH=$TOOLCHAIN/bin:$PATH
+
+# Tell pkg-config to only look for our cross-built stuff.
+export PKG_CONFIG_LIBDIR="$PREFIX/lib/pkgconfig"
+export -n PKG_CONFIG_PATH
+
+# Define some helper variables.
+C="--host=$TOOLCHAIN_TRIPLET --prefix=$PREFIX"
+CM="-Wno-dev -DCMAKE_TOOLCHAIN_FILE=../android.toolchain.cmake -DANDROID_ABI=${TARGET_ARCH} -DCMAKE_INSTALL_PREFIX=${PREFIX} -DANDROID_STANDALONE_TOOLCHAIN=${TOOLCHAIN}"
+