Compiling SDL2 in MSYS2 with sound?

[smbhax]

My MSYS2 install seems to have something called pkgconf instead of pkg-config; when I tell it to install pkg-config, it says it could conflict with pkgconf. Here's what I get using pkgconf on the SDL2 packages:

smbhax@DESKTOP-64GQN1N MINGW64 ~/angband
$ pkgconf --cflags sdl2
-IC:/msys64/mingw64/include -IC:/msys64/mingw64/include/SDL2 -Dmain=SDL_main

smbhax@DESKTOP-64GQN1N MINGW64 ~/angband
$ pkgconf --cflags sdl2_image
-IC:/msys64/mingw64/include/SDL2 -IC:/msys64/mingw64/include -Dmain=SDL_main -IC:/msys64/mingw64/include/libpng16 -DHWY_SHARED_DEFINE

smbhax@DESKTOP-64GQN1N MINGW64 ~/angband
$ pkgconf --cflags sdl2_mixer
-IC:/msys64/mingw64/include/SDL2 -IC:/msys64/mingw64/include -Dmain=SDL_main -IC:/msys64/mingw64/include/opus

smbhax@DESKTOP-64GQN1N MINGW64 ~/angband
$ pkgconf --cflags sdl2_ttf
-IC:/msys64/mingw64/include/SDL2 -IC:/msys64/mingw64/include -Dmain=SDL_main -IC:/msys64/mingw64/include/harfbuzz -IC:/msys64/mingw64/include/freetype2 -IC:/msys64/mingw64/include/libpng16 -IC:/msys64/mingw64/include/glib-2.0 -IC:/msys64/mingw64/lib/glib-2.0/include

smbhax@DESKTOP-64GQN1N MINGW64 ~/angband
$ pkgconf --libs sdl2
-LC:/msys64/mingw64/lib -lmingw32 -mwindows -lSDL2main -lSDL2

smbhax@DESKTOP-64GQN1N MINGW64 ~/angband
$ pkgconf --libs sdl2_image
-LC:/msys64/mingw64/lib -lSDL2_image -lmingw32 -mwindows -lSDL2main -lSDL2

smbhax@DESKTOP-64GQN1N MINGW64 ~/angband
$ pkgconf --libs sdl2_mixer
-LC:/msys64/mingw64/lib -lSDL2_mixer -lmingw32 -mwindows -lSDL2main -lSDL2

smbhax@DESKTOP-64GQN1N MINGW64 ~/angband
$ pkgconf --libs sdl2_ttf
-LC:/msys64/mingw64/lib -lSDL2_ttf -lmingw32 -mwindows -lSDL2main -lSDL2

Some of those linker flags aren't in the Makefile, like -lmingw32, -mwindows, -lSDL2main and -lSDL2. But I have no idea if that's relevant. There are quite a few flags in the SDL2 flag sections of the Makefile that weren't listed by pkgconf, but I don't know if those are just other things Angband needs to support its use of SDL2. And I don't know where to look for the cflags exactly; I see some things like -harfbuzz in the Makefile ("-freetype" is in twice for some reason--Oh maybe that has to do with "# freetype and harfbuzz has Circular dependency"), but not others like libpng16 or glib-2.0 (and -DHWY_SHARED_DEFINE?).

(Oh realized Angband doesn't use SDL2_gfx; removed that.)