# ACD pass description for the ACK compilers.
#
# Pre-set variables.
#   PROGRAM		- Name the compiler driver is called with.
#   ARCH		- Default target architecture.

# Library directories search path.
L =	/lib /usr/lib

# ACK Compilers support search path.
A =	$L $L/ack

# ARCH must be defined.
ifndef ARCH
	error "\$ARCH is not predefined"

# Get ARCH from the environment if set.
import ARCH

# Compiler passes.
ACK_CPP =	$A/cpp.ansi -I $CPP_F $PREDEF $NOLINENO -I/usr/include.ack
ACK_CEM =	$A/em_cemcom.ansi -I -L $CPP_F $PREDEF \
		    -Vw${W}.${W}i${W}.${W}p${P}.${W}f4.${W}s2.2l4.${W}d8.${W}
ACK_M2 =	$A/em_m2 -I$MOD_INCL -WR \
		    -Vw${W}.${W}i${W}.${W}p${P}.${W}l4.${W}f4.${W}d8.${W}
ACK_PC =	$A/em_pc \
		    -Vw${W}.${W}i${W}.${W}l4.${W}p${P}.${W}f8.${W}S${W}.${W}
MOD_INCL =	$A/m2 +
ACK_DECODE =	$A/em_decode
ACK_ENCODE =	$A/em_encode
ACK_OPT =	$A/em_opt
ACK_EGO =	$A/em_ego -P $A/ego -M$EGO_DESCR
EGO_DESCR =	$A/ego/${ARCH}descr +
ACK_OPT2 =	$A/em_opt2
ACK_CG =	$A/$ARCH/cg
ACK_AS =	$A/$ARCH/as \-
ACK_LED =	$A/em_led -a0:$W -a1:$W -a2:$W -a3:$W
ACK_CV =	$A/cv
ASMCONV =	/usr/bin/asmconv
AAL =		/usr/bin/aal

# Minix predefined symbols.
CPP_F =		-D__minix -D__minix3 -D__$ARCH

# Library path.
LIBPATH = $USERLIBPATH $A/$ARCH

# Default output "model".
MODEL = -sep

# Floating point is done in software.
LIBS = -fsoft

# Default optimization level.
OPT_LEVEL = 1

# Call names.
if $PROGRAM = acc
	PROGRAM = cc
if $PROGRAM = apc
	PROGRAM = pc
if $PROGRAM = am2
	PROGRAM = m2
if $PROGRAM = kcc
	PROGRAM = cc

# Default transformation target.
stop .out

# Select the runtime environment by option or program name.
arg -.c
if $PROGRAM = cc
	ifndef RTSO
		RTSO = -.c
	LIBS = $LIBS + -.c

# Omit the runtime startoff, but keep the libraries.
arg -.o
	RTSO =

arg -.$any
	error ".$any: unknown language"

# Select the target architecture.
arg -m$arch
	ARCH = $arch

# Preprocessor directives.
arg -D$name
arg -D $name
	CPP_F = $CPP_F -D$name
arg -U$name
arg -U $name
	CPP_F = $CPP_F -U$name
arg -I$dir
arg -I $dir
	CPP_F = $CPP_F -I$dir
	ACK_M2 = $ACK_M2 -I$dir

# Debugging.
arg -g				# Add debugging info.
	ACK_CEM = $ACK_CEM -g
	ACK_CG = $ACK_CG -gdb

arg -n				# Suppress line numbers.
	ACK_M2 = $ACK_M2 -L
	ACK_PC = $ACK_PC -L
arg -a				# Enable assertions.
arg -A				# Enable array bound checks.
	ACK_M2 = $ACK_M2 $*
	ACK_PC = $ACK_PC $*

# Language checking.
arg -w				# No warnings.
	ACK_CEM = $ACK_CEM $*
	ACK_M2 = $ACK_M2 $*
	ACK_PC = $ACK_PC $*

arg -ws				# No strict warnings.
	ACK_CEM = $ACK_CEM -s
	ACK_M2 = $ACK_M2 -wR

arg -wa				# No warnings and no strict warnings.
	ACK_CEM = $ACK_CEM -a
	ACK_M2 = $ACK_M2 -wR

arg -wo				# No warnings about old style C.
	ACK_CPP = $ACK_CPP -o
	ACK_CEM = $ACK_CEM -o
	ACK_M2 = $ACK_M2 -wO

arg -3				# Only accept 3rd generation Modula-2.
	ACK_M2 = $ACK_M2 $*

arg -_				# Allow underscores in identifiers.
	ACK_M2 = $ACK_M2 -U
	ACK_PC = $ACK_PC -U

arg -w$any
arg -F
arg -m
	# Ignore strange -w flags, and past and present i86 compiler flags.

# Stop suffix.
arg -c
	stop .o

arg -c.$stop
	stop .$stop

arg -E
	stop .E

arg -P
	CPP_F = $CPP_F -P
	stop .i

arg -S
	stop .s

# Optimization.
arg -O
	OPT_LEVEL = 1

arg -OS				# Optimize for size.
	ACK_EGO = $ACK_EGO -S
arg -OT				# Optimize for time.
	ACK_EGO = $ACK_EGO -T

arg -O$n
	numeric $n
	OPT_LEVEL = $n

# Library search path.
arg -L$dir
arg -L $dir
	USERLIBPATH = $USERLIBPATH $dir/$ARCH $dir

# -llib must be searched in $LIBPATH later.
arg -l$lib
arg -l $lib
	$> = $LIBPATH/lib$lib.a

# Software floating point, hardware floating point, or no floating point.
arg -f
arg -fp
arg -fsoft
	LIBS = $LIBS + -fsoft

arg -fhard
	LIBS = $LIBS - -fsoft

arg -fnone
	LIBS = $LIBS + -fnone

# Output model.
arg -com
	MODEL =			# Common I&D.

arg -sep
arg -i				# Separate I&D.
	MODEL = -sep

arg -r				# Relocatable object (combined .o)
	MODEL = -r

# Strip executable.
arg -s
	ACK_LED = $ACK_LED -s

# Size of heap+stack.
arg -stack $size
	ACK_CV = $ACK_CV -S $size

# Change output file.
arg -o$out
arg -o $out
	OUT = $out

# Complain about just -D, -U, -I, ...
arg -D; arg -U; arg -I; arg -L; arg -l; arg -o; arg -stack
	error "argument expected after '$*'"

arg -R$pass-$flag		# The ACK way of passing options to passes.
arg -Wack-R$pass-$flag		# The ACD way.
	if $pass = cpp
		ACK_CPP = $ACK_CPP -$flag
	if $pass = cem
		ACK_CEM = $ACK_CEM -$flag
	if $pass = m2
		ACK_M2 = $ACK_M2 -$flag
	if $pass = pc
		ACK_PC = $ACK_PC -$flag
	if $pass = opt
		ACK_OPT = $ACK_OPT -$flag
	if $pass = ego
		ACK_EGO = $ACK_EGO -$flag
	if $pass = opt2
		ACK_OPT2 = $ACK_OPT2 -$flag
	if $pass = cg
		ACK_CG = $ACK_CG -$flag
	if $pass = as
		ACK_AS = $ACK_AS -$flag
	if $pass = led
		ACK_LED = $ACK_LED -$flag

arg -Was-$dialect		# Default assembly dialect.
	ASDIALECT = $dialect

arg -W$any
	# Ignore any other -W options.

# Complain about unknown options, don't give them to the loader.
arg -$any
	error "$*: unknown option"

# Do the scanning phase early, we need to know the architecture.
scan

# The word and pointer sizes of the target.
if $ARCH = i86
	W = 2; P = 2
if $ARCH = i386
	W = 4; P = 4

ifndef W
	error "$ARCH: unsupported architecture"

# Optimize -O2 or higher?
if (0 1 - $OPT_LEVEL) = (0 1)
	ACK_EGO = $ACK_EGO -O$OPT_LEVEL
	ACK_OPT = $ACK_OPT -m0	# Leave multiplication optimization to opt2.
	prefer .m .gk

# Tell cem to reverse bitfields on the i386 to be compatible with gcc.
if $ARCH = i386
	ACK_CEM = $ACK_CEM -Vr

# Predefined preprocessor flags.
PREDEF = -D_EM_WSIZE=$W -D_EM_PSIZE=$P -D_EM_SSIZE=2 -D_EM_LSIZE=4 \
	 -D_EM_FSIZE=4 -D_EM_DSIZE=8 -D__ACK__ -D_ACK

# Preprocess C source.
transform .c .i
	$ACK_CPP $* > $>

# Preprocess any type of file and send it to standard output or $OUT.
transform "" .E
	if $* = "-"
		file =		# Standard input.
	else
		file = $*
	ifndef OUT
		$ACK_CPP $file
	else
		$ACK_CPP $file > $OUT

# Compile C source to EM-code.
transform .c .k
transform .i .k
	$ACK_CEM -I/usr/include.ack $* $>
	ifndef RTSO
		RTSO = -.c
	LIBS = $LIBS + -.c

# Compact EM to readable EM.
transform .k .e
transform .m .e
transform .gk .e
transform .g .e
	$ACK_DECODE $* > $>

# Readable EM to compact EM.
transform .e .k
	ifhash $*
		NOLINENO = -P	# Encode chokes on cpp line directives.
		apply .c .i
		unset NOLINENO
	$ACK_ENCODE $* > $>

# Peephole optimization.
transform .k .m
	$ACK_OPT $* > $>

# Global optimization.
transform .m .gk
	$ACK_EGO $* > $>

# Second peephole optimization after global optimization.
transform .gk .g
	$ACK_OPT2 $* > $>

# EM-code to target machine assembly.
transform .m .ack.s
transform .g .ack.s
transform .m .s
transform .g .s
	if $ARCH = i386
		$ACK_CG -F__fp_hook $* > $>
	else
		$ACK_CG $* > $>

# How to treat plain .s?
ifndef ASDIALECT
	transform .s .ack.s
		$> = $*

# Assembly to object file.
transform .ack.s .o
	ifhash $*
		apply .c .i
	if $> = $<.o
		ifdef OUT
			$> = $OUT
	$ACK_AS -o $> $*

# Combine object files and libraries to an executable.
combine (.o .a) .out
	if $MODEL = ()
		model = -b0:0
	if $MODEL = (-sep)
		model = -b0:0 -b1:0
	rtso =
	if $RTSO = -.c
		rtso = $A/$ARCH/crtso.o
	libd = ; libc = ; libfp =
	if (-.c - $LIBS) = ()
		libd = $A/$ARCH/libd.a
		libc = $A/$ARCH/libc.a
	if (-fsoft - $LIBS) = ()
		libfp = $A/$ARCH/libfp.a
	libs = $libd $libc $libfp $A/$ARCH/libe.a
	ifndef OUT
		OUT = a.out
	if (-r - $MODEL) = ()
		# Combine to an object file.
		$ACK_LED -r -o $OUT $*
	else
		# Combine to an executable.
		mktemp EXE
		$ACK_LED $model -o $EXE $rtso $* $libs $A/$ARCH/libend.a
		$ACK_CV -x -m$ARCH $EXE $OUT

# Add object files to a library.
combine (.o) .a
	if $> = $<.a
		ifdef OUT
			$> = $OUT
	$AAL cr $> $*

# Assembly conversions.

# ACK assembly to ACK Xenix assembly.
transform .ack.s .ncc.s
	ifhash $*
		apply .c .i
	$ASMCONV -m$ARCH ack ncc $* $>

# ACK assembly to GNU assembly.
transform .ack.s .gnu.s
	ifhash $*
		apply .c .i
	$ASMCONV -m$ARCH ack gnu $* $>

# ACK Xenix assembly to ACK assembly.
transform .ncc.s .ack.s
	ifhash $*
		apply .c .i
	$ASMCONV -m$ARCH ncc ack $* $>

# ACK Xenix assembly to GNU assembly.
transform .ncc.s .gnu.s
	ifhash $*
		apply .c .i
	$ASMCONV -m$ARCH ncc gnu $* $>

# BCC assembly to ACK assembly.
transform .bas.s .ack.s
	ifhash $*
		apply .c .i
	$ASMCONV -m$ARCH bas ack $* $>

# BCC assembly to ACK Xenix assembly.
transform .bas.s .ncc.s
	ifhash $*
		apply .c .i
	$ASMCONV -m$ARCH bas ncc $* $>

# BCC assembly to GNU assembly.
transform .bas.s .gnu.s
	ifhash $*
		apply .c .i
	$ASMCONV -m$ARCH bas gnu $* $>

#ifdef ASDIALECT
	# Treat plain .s as being in the given dialect.
	transform .s .$ASDIALECT.s
		$> = $*