## Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 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 3 of the License, 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, see <http://www.gnu.org/licenses/>.

AUTOMAKE_OPTIONS = subdir-objects

AM_CPPFLAGS = -I$(top_srcdir)/lib
# Find builddir/src/scan-code.c etc.
AM_CPPFLAGS += -I$(top_builddir)

AM_CFLAGS = $(WARN_CFLAGS) $(WERROR_CFLAGS)

LDADD = $(top_builddir)/lib/libbison.a $(LIBINTL)

# Use our own Bison to build the parser.  Of course, you ought to
# keep a sane version of Bison nearby...
YACC = $(top_builddir)/tests/bison -y
AM_YFLAGS = -dv --warnings=all,error --report=all

bin_PROGRAMS = src/bison
bin_SCRIPTS = $(YACC_SCRIPT)
EXTRA_SCRIPTS = src/yacc

src_bison_SOURCES =				\
  src/LR0.c					\
  src/LR0.h					\
  src/assoc.c					\
  src/assoc.h					\
  src/closure.c					\
  src/closure.h					\
  src/complain.c				\
  src/complain.h				\
  src/conflicts.c				\
  src/conflicts.h				\
  src/derives.c					\
  src/derives.h					\
  src/files.c					\
  src/files.h					\
  src/flex-scanner.h				\
  src/getargs.c					\
  src/getargs.h					\
  src/gram.c					\
  src/gram.h					\
  src/graphviz.c				\
  src/graphviz.h				\
  src/lalr.c					\
  src/lalr.h					\
  src/location.c				\
  src/location.h				\
  src/main.c					\
  src/muscle_tab.c				\
  src/muscle_tab.h				\
  src/nullable.c				\
  src/nullable.h				\
  src/output.c					\
  src/output.h					\
  src/parse-gram.h				\
  src/parse-gram.y				\
  src/print-xml.c				\
  src/print-xml.h				\
  src/print.c					\
  src/print.h					\
  src/print_graph.c				\
  src/print_graph.h				\
  src/reader.c					\
  src/reader.h					\
  src/reduce.c					\
  src/reduce.h					\
  src/relation.c				\
  src/relation.h				\
  src/scan-code-c.c				\
  src/scan-code.h				\
  src/scan-gram-c.c				\
  src/scan-gram.h				\
  src/scan-skel-c.c				\
  src/scan-skel.h				\
  src/state.c					\
  src/state.h					\
  src/symlist.c					\
  src/symlist.h					\
  src/symtab.c					\
  src/symtab.h					\
  src/system.h					\
  src/tables.c					\
  src/tables.h					\
  src/uniqstr.c					\
  src/uniqstr.h

EXTRA_src_bison_SOURCES =			\
  src/scan-code.l				\
  src/scan-gram.l				\
  src/scan-skel.l

BUILT_SOURCES +=				\
  src/parse-gram.c				\
  src/parse-gram.h				\
  src/scan-code.c				\
  src/scan-gram.c				\
  src/scan-skel.c

MOSTLYCLEANFILES = src/yacc

src/yacc:
	rm -f $@ $@.tmp
	echo '#! /bin/sh' >$@.tmp
	echo "exec '$(bindir)/bison' -y "'"$$@"' >>$@.tmp
	chmod a+x $@.tmp
	mv $@.tmp $@

echo:
	echo $(src_bison_SOURCES) $(noinst_HEADERS)

# The following rule is not designed to be portable,
# and relies on tools that not everyone has.

# Most functions in src/*.c should have static scope.
# Any that don't must be marked with `extern', but `main'
# and `usage' are exceptions.  They're always extern, but
# don't need to be marked.
#
# The second nm|grep checks for file-scope variables with `extern' scope.
sc_tight_scope: $(all_programs)
	@t=exceptions-$$$$;						\
	trap 's=$$?; rm -f $$t; exit $$s' 0 1 2 13 15;			\
	( printf '^main$$\n^usage$$\n';					\
	  grep -h -A1 '^extern .*[^;]$$' $(SOURCES)			\
	    | grep -vE '^(extern |--)' |sed 's/^/^/;s/ .*/$$/' ) > $$t;	\
	if nm -e *.$(OBJEXT)						\
	    | sed -n 's/.* T //p'					\
	    | grep -Ev -f $$t; then					\
	  echo 'the above functions should have static scope' 1>&2;	\
	  exit 1;							\
	fi;								\
	( printf '^program_name$$\n';					\
	  sed -n 's/^extern .*[* ]\([a-zA-Z_][a-zA-Z_0-9]*\);$$/^\1$$/p' \
	    $$(ls $(SOURCES) | grep '\.h$$') /dev/null) > $$t;		\
	if nm -e *.$(OBJEXT)						\
	    | sed -n 's/.* [BD] //p'					\
	    | grep -Ev -f $$t; then					\
	  echo 'the above variables should have static scope' 1>&2;	\
	  exit 1;							\
	fi