# Makefile for GNU m4 sources.
# Copyright (C) 1994 Free Software Foundation, Inc.

# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2, or (at your option)
# any later version.

# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.

# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

PRODUCT = @PRODUCT@
VERSION = @VERSION@

SHELL = /bin/sh
srcdir = @srcdir@
VPATH = @srcdir@

CC = @CC@
CFLAGS = @CFLAGS@
CPPFLAGS = @CPPFLAGS@
DEFS = @DEFS@
INSTALL = @INSTALL@
INSTALL_PROGRAM = @INSTALL_PROGRAM@
LDFLAGS = @LDFLAGS@
LIBS = @LIBS@
STACKOVF = @STACKOVF@

prefix = @prefix@
exec_prefix = @exec_prefix@
transform = @program_transform_name@
bindir = $(exec_prefix)/bin

COMPILE = $(CC) -c $(DEFS) $(INCLUDES) $(CPPFLAGS) $(CFLAGS)
LINK = $(CC) $(LDFLAGS) -o $@

.SUFFIXES:
.SUFFIXES: .c .o
.c.o:
	$(COMPILE) $<

ANSI2KNR = @ANSI2KNR@
O = .@U@o

.SUFFIXES: ._c ._o
.c._c:
	./ansi2knr --varargs $< > $@
._c._o:
	@echo $(COMPILE) $<
	@rm -f _$*.c
	@ln $< _$*.c && $(COMPILE) _$*.c && mv _$*.o $@ && rm _$*.c
.c._o:
	./ansi2knr --varargs $< > $*._c
	@echo $(COMPILE) $*._c
	@rm -f _$*.c
	@ln $*._c _$*.c && $(COMPILE) _$*.c && mv _$*.o $@ && rm _$*.c

INCLUDES = -I.. -I$(srcdir) -I$(srcdir)/../lib

HEADERS = m4.h
SOURCES = m4.c builtin.c debug.c eval.c format.c freeze.c input.c \
macro.c output.c path.c stackovf.c symtab.c 
OBJECTS = m4$O builtin$O debug$O eval$O format$O freeze$O input$O \
macro$O output$O path$O $(STACKOVF) symtab$O

DISTFILES = Makefile.in ansi2knr.c ansi2knr.1 $(HEADERS) $(SOURCES) \
TAGS

all: m4

m4: $(OBJECTS) ../lib/libm4.a
	$(LINK) $(OBJECTS) ../lib/libm4.a $(LIBS)

$(OBJECTS): $(ANSI2KNR) ../config.h m4.h ../lib/obstack.h
builtin$O: ../lib/regex.h

ansi2knr: ansi2knr.o
	$(LINK) ansi2knr.o $(LIBS)

install: all
	$(srcdir)/../mkinstalldirs $(bindir)
	$(INSTALL_PROGRAM) m4 $(bindir)/`echo m4 | sed '$(transform)'`

uninstall:
	rm -f $(bindir)/`echo m4 | sed '$(transform)'`

tags: TAGS

TAGS: $(HEADERS) $(SOURCES)
	cd $(srcdir) && etags -i ../lib/TAGS $(HEADERS) $(SOURCES)

mostlyclean:
	rm -f *.o *._c *._o core core.*

clean: mostlyclean
	rm -f m4

distclean: clean
	rm -f Makefile ansi2knr

realclean: distclean
	rm -f TAGS

dist: $(DISTFILES)
	@echo "Copying distribution files"
	@for file in $(DISTFILES); do \
	  ln $(srcdir)/$$file ../$(PRODUCT)-$(VERSION)/src 2> /dev/null \
	    || cp -p $(srcdir)/$$file ../$(PRODUCT)-$(VERSION)/src; \
	done

Makefile: Makefile.in ../config.status
	cd .. && CONFIG_FILES=src/$@ CONFIG_HEADERS= ./config.status

# Tell versions [3.59,3.63) of GNU make not to export all variables.
# Otherwise a system limit (for SysV at least) may be exceeded.
.NOEXPORT: