+ # Avoid exporting PKG_CONFIG_LIBDIR until after termux_step_host_build.
+ export TERMUX_PKG_CONFIG_LIBDIR=$TERMUX_PREFIX/lib/pkgconfig
+ # Add a pkg-config file for the system zlib.
+ mkdir -p "$TERMUX_PKG_CONFIG_LIBDIR"
+ cat > "$TERMUX_PKG_CONFIG_LIBDIR/zlib.pc" <<-HERE