# Makefile for "less"
#
# Invoked as:
#	make all
#   or	make install
# Plain "make" is equivalent to "make all".
#
# If you add or delete functions, remake funcs.h by doing:
#	make newfuncs
# This depends on the coding convention of function headers looking like:
#	" \t public <function-type> \n <function-name> ( ... ) "
#
# Also provided:
#	make lint	# Runs "lint" on all the sources.
#	make clean	# Removes "less" and the .o files.
#	make clobber	# Pretty much the same as make "clean".


##########################################################################
# System-specific parameters
##########################################################################

# Define XENIX if running under XENIX 3.0
XENIX = 0

# VOID is 1 if your C compiler supports the "void" type,
# 0 if it does not.
VOID = 1

# off_t is the type which lseek() returns.
# It is also the type of lseek()'s second argument.
off_t = long

# TERMIO is 1 if your system has /usr/include/termio.h.
# This is normally the case for System 5.
# If TERMIO is 0 your system must have /usr/include/sgtty.h.
# This is normally the case for BSD.
TERMIO = 1

# SIGSETMASK is 1 if your system has the sigsetmask() call.
# This is normally the case only for BSD 4.2,
# not for BSD 4.1 or System 5.
SIGSETMASK = 0


##########################################################################
# Optional and semi-optional features
##########################################################################

# REGCMP is 1 if your system has the regcmp() function.
# This is normally the case for System 5.
# RECOMP is 1 if your system has the re_comp() function.
# This is normally the case for BSD.
# If neither is 1, pattern matching is supported, but without metacharacters.
REGCMP = 1
RECOMP = 0

# SHELL_ESCAPE is 1 if you wish to allow shell escapes.
# (This is possible only if your system supplies the system() function.)
SHELL_ESCAPE = 0

# EDITOR is 1 if you wish to allow editor invocation (the "v" command).
# (This is possible only if your system supplies the system() function.)
# EDIT_PGM is the name of the (default) editor to be invoked.
EDITOR = 0
EDIT_PGM = /usr/ucb/vi

# ONLY_RETURN is 1 if you want RETURN to be the only input which
# will continue past an error message.
# Otherwise, any key will continue past an error message.
ONLY_RETURN = 0


##########################################################################
# Compilation environment.
##########################################################################

# LIBS is the list of libraries needed.
LIBS = -lcurses -lPW

# INSTALL_LESS is a list of the public versions of less.
# INSTALL_MAN is a list of the public versions of the manual page.
INSTALL_LESS =	/usr/lbin/less
INSTALL_MAN =	/usr/man/manl/less.l

# OPTIM is passed to the compiler and the loader.
# It is normally "-O" but may be, for example, "-g".
OPTIM = -O


##########################################################################
# Files
##########################################################################

SRC1 =	main.c option.c prim.c 
SRC2 =	ch.c position.c input.c output.c screen.c \
	prompt.c line.c signal.c help.c ttyin.c command.c version.c
SRC =	$(SRC1) $(SRC2)
OBJ =	main.o option.o prim.o ch.o position.o input.o output.o screen.o \
	prompt.o line.o signal.o help.o ttyin.o command.o version.o


##########################################################################
# Rules
##########################################################################

DEFS =	"-DTERMIO=$(TERMIO)" \
	"-DSIGSETMASK=$(SIGSETMASK)" \
	"-Doff_t=$(off_t)" "-DVOID=$(VOID)" \
	"-DREGCMP=$(REGCMP)" "-DRECOMP=$(RECOMP)" \
	"-DSHELL_ESCAPE=$(SHELL_ESCAPE)" \
	"-DEDITOR=$(EDITOR)" "-DEDIT_PGM=\"$(EDIT_PGM)\"" \
	"-DONLY_RETURN=$(ONLY_RETURN)" \
	"-DXENIX=$(XENIX)"

CFLAGS = $(OPTIM) $(DEFS)


all: less

less: $(OBJ)
	cc $(OPTIM) -o less $(OBJ) $(LIBS)

install: install_man install_less

install_man: less.l
	for f in $(INSTALL_MAN); do  rm -f $$f; cp less.l $$f;  done
	touch install_man
	
install_less: less
	for f in $(INSTALL_LESS); do  rm -f $$f; cp less $$f;  done
	touch install_less

$(OBJ): less.h funcs.h

lint:
	lint -hp $(DEFS) $(SRC)

newfuncs:
	mv funcs.h funcs.h.OLD
	awk -f mkfuncs.awk $(SRC) >funcs.h

clean:
	rm -f $(OBJ) less

clobber:
	rm -f *.o less install_less install_man

shar:
	shar -v INSTALLATION less.l makefile.* *.h *.awk $(SRC1) > less.shar.a
	shar -v $(SRC2) > less.shar.b