OK; I've fixed that issue, by replacing the old dmaKit_init code in FMCB's draw.c...
Code:
dmaKit_init(D_CTRL_RELE_OFF,D_CTRL_MFD_OFF, D_CTRL_STS_UNSPEC, D_CTRL_STD_OFF, D_CTRL_RCYC_8);
...with...
Code:
dmaKit_init(D_CTRL_RELE_OFF,D_CTRL_MFD_OFF, D_CTRL_STS_UNSPEC,
D_CTRL_STD_OFF, D_CTRL_RCYC_8, 1 << DMA_CHANNEL_GIF);
...which ptek took from the bigtex.c gskit example, and shared with me last time I had an issue compiling some old gsKit source...
However, we now have another issue, with:
Code:
Error opening C:/msys/1.0/local/ps2dev/usbhdfsd/bin/usbhdfsd.irx for reading.
make[1]: *** [obj/usbhdfsd.s] Error 1
make[1]: Leaving directory `/home/mcboot1.5/src'
make: *** [all] Error 2
...likely caused by the fact that I don't have usbhdfsd installed 
I'll work on adding it.