# Makefile.in for ast
# see license.txt for copyright and terms of use

# main targets
all: ccsstr astgen libast.a example.o ext1.o


# directories of other software
SMBASE := @SMBASE@
LIBSMBASE := $(SMBASE)/libsmbase.a

# external tools
PERL := @PERL@
MYFLEX := $(PERL) $(SMBASE)/run-flex.pl

# TODO: agramlex.yy.cc apparently has backing up, which should
# ideally be removed; add -nobackup to the run-flex.pl command
# line to see this


# C++ compiler, etc.
CXX := $(CXX)

# flags for the C and C++ compilers (and preprocessor)
CCFLAGS := @CCFLAGS@ -I$(SMBASE)

# flags for the linker
LDFLAGS := -g -Wall $(LIBSMBASE)


# some other tools
AR     := ar
RANLIB := ranlib


# compile .cc to .o
%.o: %.cc
	$(CXX) -c -o $@ $< $(CCFLAGS)
	@perl $(SMBASE)/depend.pl -o $@ $< $(CCFLAGS) > $*.d


# remake the generated Makefile if its inputs have changed
Makefile: Makefile.in config.status
	./config.status

# reconfigure if the configure script has changed
config.status: configure.pl $(SMBASE)/sm_config.pm
	./config.status -reconfigure


# ---------------------- intermediate files -------------------
# for bison-1.28:
  # unfortunately, the way bison.simple declares YYSTYPE precludes a proper
  # declaration of yylex(), unless I modify it as below; the 'grep' is so
  # I have a .h file without the union, since the union refers to types
  # whose declarations I'd like to avoid spreading everywhere
# for bison-1.875:
  # g++ doesn't like __attribute__((__unused__))
agrampar.tab.cc agrampar.tab.h agrampar.codes.h: agrampar.y
	bison -d -v agrampar.y
	mv -f agrampar.tab.c tmp
	sed -e 's/typedef union {/typedef union YYSTYPE {/' \
	    -e 's/__attribute__ ((__unused__))//' \
	  < tmp > agrampar.tab.cc
	mv -f agrampar.tab.h tmp
	sed -e 's/typedef union {/typedef union YYSTYPE {/' < tmp > agrampar.tab.h
	rm tmp
	grep '# *define' agrampar.tab.h > agrampar.codes.h

agrampar.tab.o: ast.hand.h ast.ast.h agrampar.h

# have to use sed to change the forward declaration of 'istream'
# into an #include, so the std:: namespace doesn't cause a problem
agramlex.yy.cc: gramlex.h agramlex.lex agrampar.codes.h
	$(MYFLEX) -o$@ agramlex.lex


# ------------------------- ccsstr ---------------------
CCSSTR_OBJS := \
  reporterr.o \
  embedded.o

ccsstr: ccsstr.cc ccsstr.h $(CCSSTR_OBJS)
	$(CXX) -o $@ -DTEST_CCSSTR $(CCFLAGS) ccsstr.cc $(CCSSTR_OBJS) $(LDFLAGS)


# ------------------------- astgen ---------------------
ASTGEN_OBJS := \
  gramlex.o \
  agrampar.tab.o \
  ccsstr.o \
  agramlex.yy.o \
  reporterr.o \
  embedded.o \
  ast.hand.o \
  asthelp.o \
  xmlhelp.o \
  strtable.o \
  agrampar.o  \
  astgen.o
-include $(ASTGEN_OBJS:.o=.d)

# ast.ast.cc is a dependency here but not explicitly in the command
# line because ast.hand.cc #includes it
astgen: $(ASTGEN_OBJS) ast.ast.cc $(LIBSMBASE) 
	$(CXX) -o astgen $(ASTGEN_OBJS) $(LDFLAGS)


# ---------------------- run astgen ----------------------
# simple ast spec file
example.cc: astgen example.ast
	./astgen example.ast

exampletest: exampletest.o example.o asthelp.o locstr.o strtable.o $(LIBSMBASE)
	$(CXX) -o $@ $^

# simple extension
ext1.cc: astgen example.ast ext1.ast
	./astgen -oext1 example.ast ext1.ast

# If you want to regenerate astgen's own ast file, you do
#   ./astgen -oast.ast ast.ast
#
# This rule is *not* in the Makefile because if you do it
# without thinking you can break the self-bootstrapping
# (and be forced to restore your ast.ast.{cc,h} from the
# distribution tarball or from CVS).


# ------------------------ libast.a -------------------
# this library is the set of support modules required for
# using astgen-generated code, or are simply useful generally
# but don't belong in smbase
LIB_OBJS := \
  gramlex.o \
  ccsstr.o \
  reporterr.o \
  embedded.o \
  asthelp.o \
  xmlhelp.o \
  strtable.o \
  locstr.o
-include $(ASTGEN_OBJS:.o=.d)

libast.a: $(LIB_OBJS)
	$(AR) -r $@ $(LIB_OBJS)
	-$(RANLIB) $@


# ------------------ documentation ------------------
gendoc:
	mkdir gendoc

gendoc/configure.txt: configure
	./configure --help >$@

gendoc/demo.h gendoc/demo.cc: demo.ast astgen
	./astgen -ogendoc/demo demo.ast

.PHONY: doc
doc: gendoc gendoc/configure.txt gendoc/demo.h
	@echo "built documentation"


# ------------------------ misc ---------------------
check: ccsstr
	./ccsstr

# delete outputs of compiler, linker
clean:
	rm -f *.o tmp *.d
	rm -f agrampar astgen ccsstr towner exampletest libast.a
	rm -f agrampar.output
	rm -f example.{h.cc} ext1.{h,cc}
	rm -f agramlex.yy.cc

# return to pristine checked-out state
distclean: clean
	rm -f Makefile config.status config.summary
	rm -rf gendoc

# 'clean', plus remove distributed outputs of bison
toolclean: clean
	rm -f agrampar.tab.h
	rm -f agrampar.tab.cc
	rm -f agrampar.codes.h

# test for owner
towner: owner.h towner.o
	$(CXX) -o towner towner.o $(LDFLAGS)