I did a fresh clone from git and got the following error on make dep
Makefile.am:7: error: Libtool library used but 'LIBTOOL' is undefined
Makefile.am:7: The usual way to define 'LIBTOOL' is to add 'LT_INIT'
Makefile.am:7: to 'configure.ac' and run 'aclocal' and 'autoconf' again.
Makefile.am:7: If 'LT_INIT' is in 'configure.ac', make sure
Makefile.am:7: its definition is in aclocal's search path.
Makefile.am: installing 'config/depcomp'
parallel-tests: installing 'config/test-driver'
autoreconf-2.71: error: automake failed with exit status: 1
make[1]: *** [Makefile:201: lib/librtmidi.a] Error 1
make[1]: Leaving directory '/home/Birgit/Rack/dep'
make: *** [Makefile:101: dep] Error 2
From the manual:
pacman -Su git wget make tar unzip zip mingw-w64-x86_64-gcc mingw-w64-x86_64-gdb mingw-w64-x86_64-cmake autoconf automake libtool mingw-w64-x86_64-jq python zstd