Makefile

SHELL = /bin/sh

CC ?= cc
INSTALL ?= install
INSTALL_PROGRAM ?= $(INSTALL) -m 755
INSTALL_DATA ?= $(INSTALL) -m 644

CFLAGS ?= -O2
CPPFLAGS ?=
LDFLAGS ?=
LIBS ?=
O = o

prefix ?= /usr/local
bindir ?= $(prefix)/bin
libexecdir ?= $(prefix)/libexec
sysconfdir ?= $(prefix)/etc
mandir ?= $(prefix)/man
manext ?= 1

SECURE_COMPILE ?= 0
CPPFLAGS += -DSECURE_COMPILE=$(SECURE_COMPILE)

ifeq ($(LESSTEST),1)
CPPFLAGS += -DLESSTEST=1
endif

ifeq ($(SAN),1)
CPPFLAGS += -fsanitize=address -fsanitize=undefined -fno-sanitize-recover=all -fsanitize=float-divide-by-zero -fsanitize=float-cast-overflow -fno-sanitize=null -fno-sanitize=alignment
LDFLAGS += -fsanitize=address -fsanitize=undefined
endif

REL := $(shell sed -n 's/.*char version.*"\([^"]*\)".*/\1/p' version.c)
DATE := $(shell date '+%d %h %Y')

LESS_SRC = \
	main.c screen.c brac.c ch.c charset.c cmdbuf.c \
	command.c cvt.c decode.c edit.c evar.c filename.c forwback.c \
	help.c ifile.c input.c jump.c line.c linenum.c \
	lsystem.c mark.c optfunc.c option.c opttbl.c os.c \
	output.c pattern.c position.c prompt.c search.c signal.c \
	tags.c ttyin.c version.c xbuf.c

OBJ = \
	main.$(O) screen.$(O) brac.$(O) ch.$(O) charset.$(O) cmdbuf.$(O) \
	command.$(O) cvt.$(O) decode.$(O) edit.$(O) evar.$(O) filename.$(O) forwback.$(O) \
	help.$(O) ifile.$(O) input.$(O) jump.$(O) \
	line.$(O) linenum.$(O) \
	lsystem.$(O) mark.$(O) optfunc.$(O) option.$(O) opttbl.$(O) os.$(O) \
	output.$(O) pattern.$(O) position.$(O) prompt.$(O) search.$(O) signal.$(O) \
	tags.$(O) ttyin.$(O) version.$(O) xbuf.$(O)

ifneq ($(SECURE_COMPILE),1)
OBJ += lesskey_parse.$(O)
endif

all: less

.c.$(O):
	$(CC) -I. -c -DBINDIR=\"$(bindir)\" -DLIBEXECDIR=\"$(libexecdir)\" -DSYSDIR=\"$(sysconfdir)\" $(CPPFLAGS) $(CFLAGS) $<

less: $(OBJ)
	$(CC) $(LDFLAGS) -o $@ $(OBJ) $(LIBS)

lesskey: lesskey.$(O) lesskey_parse.$(O) xbuf.$(O) version.$(O)
	$(CC) $(LDFLAGS) -o $@ lesskey.$(O) lesskey_parse.$(O) xbuf.$(O) version.$(O) $(LIBS)

lessecho: lessecho.$(O) version.$(O)
	$(CC) $(LDFLAGS) -o $@ lessecho.$(O) version.$(O) $(LIBS)

buildgen: buildgen.c
	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ buildgen.c

help.c: less.hlp buildgen
	./buildgen help < less.hlp > $@

funcs.h: $(LESS_SRC) buildgen
	cat $(LESS_SRC) | ./buildgen funcs > $@

less.nro: less.nro.VER version.c
	sed -e "s;@@VERSION@@;$(REL);" -e "s;@@DATE@@;$(DATE);" less.nro.VER > $@

lesskey.nro: lesskey.nro.VER version.c
	sed -e "s;@@VERSION@@;$(REL);" -e "s;@@DATE@@;$(DATE);" lesskey.nro.VER > $@

lessecho.nro: lessecho.nro.VER version.c
	sed -e "s;@@VERSION@@;$(REL);" -e "s;@@DATE@@;$(DATE);" lessecho.nro.VER > $@

charset.$(O): compose.uni ubin.uni wide.uni
$(OBJ) lesskey.$(O) lessecho.$(O): less.h funcs.h defines.h lang.h pattern.h xbuf.h
screen.$(O) ttyin.$(O): pckeys.h

install: all less.nro
	mkdir -p $(DESTDIR)$(bindir) $(DESTDIR)$(libexecdir) $(DESTDIR)$(mandir)/man$(manext)
	$(INSTALL_PROGRAM) less $(DESTDIR)$(bindir)/less
	$(INSTALL_PROGRAM) less-osc8-open.sh $(DESTDIR)$(libexecdir)/less-osc8-open
	$(INSTALL_DATA) less.nro $(DESTDIR)$(mandir)/man$(manext)/less.$(manext)

uninstall:
	rm -f $(DESTDIR)$(bindir)/less
	rm -f $(DESTDIR)$(bindir)/lesskey
	rm -f $(DESTDIR)$(libexecdir)/lessecho
	rm -f $(DESTDIR)$(libexecdir)/less-osc8-open
	rm -f $(DESTDIR)$(mandir)/man$(manext)/less.$(manext)
	rm -f $(DESTDIR)$(mandir)/man$(manext)/lesskey.$(manext)
	rm -f $(DESTDIR)$(mandir)/man$(manext)/lessecho.$(manext)

check:
	if [ -x ./less ] && ./less -V | grep -q LESSTEST; then :; else $(MAKE) clean; fi
	$(MAKE) LESSTEST=1
	objdir=$$(pwd); rflags=""; if [ -z "$(VERBOSE)" ]; then rflags=-e; fi; cd lesstest && $(MAKE) && ./runtest $$rflags -l "$$objdir/less" lt

TAGS:
	etags *.c *.h

clean:
	rm -f *.$(O) core less lesskey lessecho buildgen help.c funcs.h less.nro lesskey.nro lessecho.nro
	cd lesstest && $(MAKE) clean

mostlyclean: clean
distclean: clean
realclean: clean

.PHONY: all install uninstall check TAGS clean mostlyclean distclean realclean