[BRLTTY] build errors

[N B]

When building brltty I am seeing errors like :
sys_windows.build.o: In function `logMidiOutError':
/cygdrive/c/brltty-4.5/Programs/sys_midi_windows.h:44: undefined reference to `__imp_midiOutGetErrorTextA'
/cygdrive/c/brltty-4.5/Programs/sys_midi_windows.h:44:(.text+0x102): relocation truncated to fit: R_X86_64_PC32 against undefined symbol `__imp_midiOutGetErrorTextA'

It seems like I am not including something that should be there, but I am not sure what.
I have also included the output of the make command
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