Failing to build on Manjaro Linux

[coreybruce]

Hey there I just wanted to report a issue building this on Manjaro Linux.

gcc ./src/ext/lib/cimgui/imgui/backends/imgui_impl_opengl2.o ./src/ext/lib/cimgui/imgui/backends/imgui_impl_sdl.o ./src/ext/lib/cimgui/imgui/imgui_draw.o ./src/ext/lib/cimgui/imgui/imgui_tables.o ./src/ext/lib/cimgui/imgui/imgui_widgets.o ./src/ext/lib/cimgui/imgui/imgui.o ./src/ext/lib/cimgui/cimgui.o src/ns.o src/pad.o src/math.o src/audio.o src/midi.o src/cam.o src/solid.o src/slst.o src/level.o src/misc.o src/gfx.o src/gool.o src/pbak.o src/title.o src/main.o src/pc/init.o src/pc/math.o src/pc/pad.o src/pc/time.o src/pc/gfx/tex.o src/pc/gfx/soft.o src/pc/gfx/gl.o src/pc/sound/util.o src/pc/sound/midi.o src/pc/sound/audio.o src/util/list.o src/util/tree.o src/ext/lib/gui.o src/ext/lib/refl.o src/ext/gui.o src/ext/refl.o src/ext/disgool.o -o c1 -g -fplan9-extensions -m32 -lSDL2 -lGL -lfluidsynth -lm -lstdc++ -DCFLAGS_GFX_SW_PERSP -DCFLAGS_DRAW_EXTENSIONS -DCFLAGS_GUI -DCFLAGS_GOOL_DEBUG
/usr/bin/ld: skipping incompatible /usr/lib/gcc/x86_64-pc-linux-gnu/13.2.1/../../../libfluidsynth.so when searching for -lfluidsynth
/usr/bin/ld: skipping incompatible /usr/lib/libfluidsynth.so when searching for -lfluidsynth
/usr/bin/ld: cannot find -lfluidsynth: No such file or directory
/usr/bin/ld: skipping incompatible /usr/lib/gcc/x86_64-pc-linux-gnu/13.2.1/../../../libfluidsynth.so when searching for -lfluidsynth
/usr/bin/ld: skipping incompatible /usr/lib/libfluidsynth.so when searching for -lfluidsynth
collect2: error: ld returned 1 exit status
make: *** [Makefile:81: c1] Error 1

I have fluidsynth 2.3.4-1 installed