#!/usr/bin/env wmake

# Debug Settings
!ifeq debug 1
# Dump debug log to serial port, 0x3F8 UART (COM1)
debug_cflags = -DENABLE_DLOG=1 -DDLOG_TARGET=DLOG_TARGET_SERIAL -DDLOG_TARGET_PORT=0x3F8
!endif

# All binaries to build
bins = chudisk.sys chud.exe utest.exe

# Object files for chudisk
chudisk_objs = chudisk.obj chudinit.obj cio.obj

# Compiler arguments for DOS
dos_cflags = -bt=dos -i=../inc -3 -ms -osi -ox -w3 -wcd=202 $(debug_cflags)
# -ms to use small memory model (this assumes ss == ds)
# -osi to optimize for size, put intrinsics inline (to avoid runtime calls)
# -ox extra optimization (impact is not very big)
# -w3 enables warnings
# -wcd=202 disables the unreferenced function warning (e.g., for inline functions in headers)

# Compiler arguments for the DOS drivers
dosdrv_cflags = $(dos_cflags) -zu -s -g=DGROUP
# -zu since ss != ds in the driver
# -s to disable stack checks, since it inserts calls to the runtime
# -g=DGROUP put everything into the same segment

# Full compiler command lines
compile_dos = *wcc -fo=$^@ $(dos_cflags) $[@
compile_dosdrv = *wcc -fo=$^@ $(dosdrv_cflags) $[@

# Object files

.BEFORE:
	# We need DOS and Windows headers, not host platform's
	set include=$(%watcom)/h/win;$(%watcom)/h

all: $(bins) .SYMBOLIC

chudisk.sys: chudisk.lnk $(chudisk_objs) .AUTODEPEND
	*wlink @$[@ name $@ file { $(chudisk_objs) }

chudisk.obj: chudisk.c .AUTODEPEND
	$(compile_dosdrv)

chudinit.obj: chudinit.c .AUTODEPEND
	$(compile_dosdrv)

cio.obj: cio.c .AUTODEPEND
	$(compile_dosdrv)

chud.exe: chud.obj .AUTODEPEND
	*wlink name $@ system dos file { chud.obj }

chud.obj: chud.c .AUTODEPEND
	$(compile_dos)

utest.exe: utest.obj .AUTODEPEND
	*wlink system dos name $@ file { utest.obj }

utest.obj: utest.c .AUTODEPEND
	$(compile_dos)

clean: .SYMBOLIC
	rm -f $(bins) *.obj