How to manually compile emulators (lr-yabause)

[dankcushions]

i’d like to experiment with some additional make flags during a lr-yabause compile, but i can’t decipher the make string i should be using from the scripts. i think the script is lr-yabause.sh, but from that i can’t isolate the actual make command i would need to run in the command line (ideally with the same source and destination directories, which i’m also not sure of!):

#!/usr/bin/env bash

# This file is part of RetroPie.
#
# (c) Copyright 2012-2015  Florian Müller ()
#
# See the LICENSE.md file at the top-level directory of this distribution and
# at https://raw.githubusercontent.com/RetroPie/RetroPie-Setup/master/LICENSE.md
#

rp_module_id="lr-yabause"
rp_module_desc="Sega Saturn emu - Yabause (optimised) port for libretro"
rp_module_menus="4+"
rp_module_flags="!rpi1"

function sources_lr-yabause() {
    gitPullOrClone "$md_build" https://github.com/libretro/yabause.git
}

function build_lr-yabause() {
    cd libretro
    make clean
    make platform=armvneonhardfloat
    md_ret_require="$md_build/libretro/yabause_libretro.so"
}

function install_lr-yabause() {
    md_ret_files=(
        'libretro/yabause_libretro.so'
        'yabause/AUTHORS'
        'yabause/COPYING'
        'yabause/ChangeLog'
        'yabause/AUTHORS'
        'yabause/GOALS'
        'yabause/README'
        'yabause/README.LIN'
    )
-}

function configure_lr-yabause() {
    mkRomDir "saturn"
    ensureSystemretroconfig "saturn"

    addSystem 1 "$md_id" "saturn" "$md_inst/yabause_libretro.so"
}

Can anyone please give me the command I’d need to do the default build, as per the scripts? i can then add my compilation flags to it.

PS, if anyone is interested, the flags i will be experimenting with:

-YAB_WANT_ARM7=ON
-YAB_WANT_VIDSOFT_RBG0_THREADING=ON
-YAB_WANT_VIDSOFT_NBG0_THREADING=ON
-YAB_WANT_VIDSOFT_RENDER_THREADING=OFF
-YAB_WANT_VIDSOFT_LAYER_THREADING=OFF

(all/some of these may improve performance on rpi2)

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