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diff --git a/.gitignore b/.gitignore
index b4b4597..65bf18d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -23,5 +23,6 @@ config.log
diff --git a/AUTHORS b/AUTHORS
new file mode 100644
index 0000000..ca6ccd1
--- a/dev/null
@@ -0,0 +1 @@
+Sergey Poznyakoff <>
diff --git a/COPYING b/COPYING
new file mode 100644
index 0000000..94a9ed0
--- a/dev/null
@@ -0,0 +1,674 @@
+ Version 3, 29 June 2007
+ Copyright (C) 2007 Free Software Foundation, Inc. <>
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+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+ The GNU General Public License does not permit incorporating your program
+into proprietary programs. If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library. If this is what you want to do, use the GNU Lesser General
+Public License instead of this License. But first, please read
diff --git a/ b/
index 643d06a..72619ec 100644
--- a/
+++ b/
@@ -1,2 +1,10 @@
+@GRECS_CHANGELOG@ $(AM_V_GEN)if test -d .git; then \
+@GRECS_CHANGELOG@ git log --pretty='format:%ct %an <%ae>%n%n%s%n%n%b%n' | \
+@GRECS_CHANGELOG@ awk -f $(top_srcdir)/build-aux/git2chg.awk > ChangeLog; \
diff --git a/NEWS b/NEWS
new file mode 100644
index 0000000..c7a2021
--- a/dev/null
+++ b/NEWS
@@ -0,0 +1,33 @@
+Grecs NEWS -- history of user-visible changes. 2011-05-07
+Copyright (C) 2011 Sergey Poznyakoff
+See the end of file for copying conditions.
+Please send libgrecs bug reports to <>
+Version 1.0 (Git)
+Copyright information:
+Copyright (C) 2011 Sergey Poznyakoff
+ Permission is granted to anyone to make or distribute verbatim copies
+ of this document as received, in any medium, provided that the
+ copyright notice and this permission notice are preserved,
+ thus giving the recipient permission to redistribute in turn.
+ Permission is granted to distribute modified versions
+ of this document, or of portions of it,
+ under the above conditions, provided also that they
+ carry prominent notices stating who last changed them.
+Local variables:
+mode: outline
+paragraph-separate: "[ ]*$"
+eval: (add-hook 'write-file-hooks 'time-stamp)
+time-stamp-start: "changes. "
+time-stamp-format: "%:y-%02m-%02d"
+time-stamp-end: "\n"
diff --git a/README b/README
new file mode 100644
index 0000000..dc58ad3
--- a/dev/null
+++ b/README
@@ -0,0 +1,30 @@
+Copyright (C) 2011 Sergey Poznyakoff
+See the end of file for copying conditions.
+* Bug reporting.
+Send bug reports to <>.
+* Copyright information:
+Copyright (C) 2011 Sergey Poznyakoff
+ Permission is granted to anyone to make or distribute verbatim copies
+ of this document as received, in any medium, provided that the
+ copyright notice and this permission notice are preserved,
+ thus giving the recipient permission to redistribute in turn.
+ Permission is granted to distribute modified versions
+ of this document, or of portions of it,
+ under the above conditions, provided also that they
+ carry prominent notices stating who last changed them.
+Local Variables:
+mode: outline
+paragraph-separate: "[ ]*$"
+version-control: never
diff --git a/am/.gitignore b/am/.gitignore
new file mode 100644
index 0000000..94f2b51
--- a/dev/null
+++ b/am/.gitignore
@@ -0,0 +1,2 @@
diff --git a/am/grecs.m4 b/am/grecs.m4
index e8d6915..81a6ee5 100644
--- a/am/grecs.m4
+++ b/am/grecs.m4
@@ -69,12 +69,13 @@ AC_DEFUN([_GRECS_SET_OPTIONS],
# no preprocessor setup file is installed.
+ m4_pushdef([grecsdir],m4_if($1,[.],,$1,,[grecs/],$1/))
- AC_SUBST([GRECS_SUBDIR],m4_if([$1],,grecs,$1))
+ AC_SUBST([GRECS_SUBDIR],m4_if($1,,grecs,$1))
# **********************
# Preprocessor
@@ -134,7 +135,7 @@ AC_DEFUN([GRECS_SETUP],[
- [m4_pushdef([TESTDIR],m4_if([$1],,grecs,$1)/tests)
+ [m4_pushdef([TESTDIR],grecsdir[tests])
@@ -153,26 +154,33 @@ AC_DEFUN([GRECS_SETUP],[
if test -z "$s"; then
+ AC_SUBST([GRECS_INCLUDES],['-I$(top_srcdir)/]grecsdir[src]')
- GRECS_LDADD='$(top_builddir)/m4_if([$1],,grecs,$1)/src/'
+ GRECS_LDADD=['$(top_builddir)/]grecsdir[src/']
- AC_CONFIG_FILES(m4_if([$1],,grecs,$1)/src/Makefile:m4_if([$1],,grecs,$1)/src/
- m4_if([$1],,grecs,$1)/doc/Makefile)
+ AC_CONFIG_FILES(grecsdir[src/Makefile]:grecsdir[src/]
+ grecsdir[doc/Makefile])
- GRECS_LDADD='$(top_builddir)/m4_if([$1],,grecs,$1)/src/'
- AC_CONFIG_FILES(m4_if([$1],,grecs,$1)/src/Makefile:m4_if([$1],,grecs,$1)/src/
+ GRECS_LDADD=['$(top_builddir)/]grecsdir[src/']
+ AC_CONFIG_FILES(grecsdir[src/Makefile]:grecsdir[src/])
- GRECS_LDADD='$(top_builddir)/m4_if([$1],,grecs,$1)/src/libgrecs.a'
- AC_CONFIG_FILES(m4_if([$1],,grecs,$1)/src/Makefile:m4_if([$1],,grecs,$1)/src/
+ GRECS_LDADD=['$(top_builddir)/]grecsdir[src/libgrecs.a']
+ AC_CONFIG_FILES(grecsdir[src/Makefile]:grecsdir[src/])
- AC_CONFIG_FILES(m4_if([$1],,grecs,$1)/Makefile)
+ AC_CONFIG_FILES(grecsdir[Makefile])
+ m4_popdef([grecsdir])
diff --git a/build-aux/.gitignore b/build-aux/.gitignore
new file mode 100644
index 0000000..ce7170e
--- a/dev/null
+++ b/build-aux/.gitignore
@@ -0,0 +1,6 @@
diff --git a/build-aux/ylwrap b/build-aux/ylwrap
deleted file mode 100755
index 6546d66..0000000
--- a/build-aux/ylwrap
+++ b/dev/null
@@ -1,234 +0,0 @@
-#! /bin/sh
-# ylwrap - wrapper for lex/yacc invocations.
-# Copyright (C) 1996, 1997, 1998, 1999, 2001, 2002, 2003, 2004, 2005,
-# 2007,2009 Free Software Foundation, Inc.
-# Written by Tom Tromey <>.
-# The --prefix option added by Sergey Poznyakoff <>.
-# 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
-# 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., 51 Franklin Street, Fifth Floor, Boston, MA
-# 02110-1301, USA.
-# As a special exception to the GNU General Public License, if you
-# distribute this file as part of a program that contains a
-# configuration script generated by Autoconf, you may include it under
-# the same distribution terms that you use for the rest of that program.
-# This file is maintained in Automake, please report
-# bugs to <> or send patches to
-# <>.
-case "$1" in
- '')
- echo "$0: No files given. Try \`$0 --help' for more information." 1>&2
- exit 1
- ;;
- --basedir)
- basedir=$2
- shift 2
- ;;
- --p|--pr|--pre|--pref|--prefi|--prefix)
- YYREPL="s/yy/$2/g"
- shift 2
- ;;
- -h|--h*)
- cat <<\EOF
-Wrapper for lex/yacc invocations, renaming files as desired.
- INPUT is the input file
- OUTPUT is one file PROG generates
- DESIRED is the file we actually want instead of OUTPUT
- PROGRAM is program to run
- ARGS are passed to PROG
-Any number of OUTPUT,DESIRED pairs may be used.
- -p, --prefix PREFIX Replace `yy' in identifiers with PREFIX
- --help Display this help message and exit
- --version Display program version and exit
-Report bugs to <>.
- exit $?
- ;;
- -v|--v*)
- echo "ylwrap $scriptversion"
- exit $?
- ;;
-# The input.
-case "$input" in
- [\\/]* | ?:[\\/]*)
- # Absolute path; do nothing.
- ;;
- *)
- # Relative path. Make it absolute.
- input="`pwd`/$input"
- ;;
-while test "$#" -ne 0; do
- if test "$1" = "--"; then
- shift
- break
- fi
- pairlist="$pairlist $1"
- shift
-# The program to run.
-# Make any relative path in $prog absolute.
-case "$prog" in
- [\\/]* | ?:[\\/]*) ;;
- *[\\/]*) prog="`pwd`/$prog" ;;
-# FIXME: add hostname here for parallel makes that run commands on
-# other machines. But that might take us over the 14-char limit.
-trap "cd '`pwd`'; rm -rf $dirname > /dev/null 2>&1" 1 2 3 15
-mkdir $dirname || exit 1
-cd $dirname
-case $# in
- 0) "$prog" "$input" ;;
- *) "$prog" "$@" "$input" ;;
-if test $ret -eq 0; then
- set X $pairlist
- shift
- first=yes
- # Since DOS filename conventions don't allow two dots,
- # the DOS version of Bison writes out y_tab.c instead of
- # and y_tab.h instead of Test to see if this is the case.
- y_tab_nodot="no"
- if test -f y_tab.c || test -f y_tab.h; then
- y_tab_nodot="yes"
- fi
- # The directory holding the input.
- input_dir=`echo "$input" | sed -e 's,\([\\/]\)[^\\/]*$,\1,'`
- # Quote $INPUT_DIR so we can use it in a regexp.
- # FIXME: really we should care about more than `.' and `\'.
- input_rx=`echo "$input_dir" | sed 's,\\\\,\\\\\\\\,g;s,\\.,\\\\.,g'`
- while test "$#" -ne 0; do
- from="$1"
- # Handle y_tab.c and y_tab.h output by DOS
- if test $y_tab_nodot = "yes"; then
- if test $from = ""; then
- from="y_tab.c"
- else
- if test $from = ""; then
- from="y_tab.h"
- fi
- fi
- fi
- if test -f "$from"; then
- # If $2 is an absolute path name, then just use that,
- # otherwise prepend `../'.
- case "$2" in
- [\\/]* | ?:[\\/]*) target="$2";;
- *) target="../$2";;
- esac
- # We do not want to overwrite a header file if it hasn't
- # changed. This avoid useless recompilations. However the
- # parser itself (the first file) should always be updated,
- # because it is the destination of the .y.c rule in the
- # Makefile. Divert the output of all other files to a temporary
- # file so we can compare them to existing versions.
- if test $first = no; then
- realtarget="$target"
- target="tmp-`echo $target | sed s/.*[\\/]//g`"
- fi
- # Edit out `#line' or `#' directives.
- #
- # We don't want the resulting debug information to point at
- # an absolute srcdir; it is better for it to just mention the
- # .y file with no path.
- #
- # We want to use the real output file name, not yy.lex.c for
- # instance.
- #
- # We want the include guards to be adjusted too.
- FROM=`echo "$from" | sed \
- -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'\
- TARGET=`echo "$2" | sed \
- -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'\
- sed -e "$YYREPL" \
- -e "/^#/!b" -e "s,$input_rx,," -e "s,$from,$2," \
- -e "s,$FROM,$TARGET," "$from" >"$target" || ret=$?
- # Check whether header files must be updated.
- if test $first = no; then
- if test -f "$realtarget" && cmp -s "$realtarget" "$target"; then
- echo "$2" is unchanged
- rm -f "$target"
- else
- echo updating "$2"
- mv -f "$target" "$realtarget"
- fi
- fi
- else
- # A missing file is only an error for the first file. This
- # is a blatant hack to let us support using "yacc -d". If -d
- # is not specified, we don't want an error when the header
- # file is "missing".
- if test $first = yes; then
- ret=1
- fi
- fi
- shift
- shift
- first=no
- done
- ret=$?
-# Remove the directory.
-cd ..
-rm -rf $dirname
-exit $ret
-# Local Variables:
-# mode: shell-script
-# sh-indentation: 2
-# eval: (add-hook 'write-file-hooks 'time-stamp)
-# time-stamp-start: "scriptversion="
-# time-stamp-format: "%:y-%02m-%02d.%02H"
-# time-stamp-end: "$"
-# End:
diff --git a/ b/
new file mode 100644
index 0000000..980c713
--- a/dev/null
+++ b/
@@ -0,0 +1,42 @@
+# This file is part of Grecs -*- autoconf -*-
+# Copyright (C) 2011 Sergey Poznyakoff
+# Grecs 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, or (at your option)
+# any later version.
+# Grecs is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# GNU General Public License for more details.
+# You should have received a copy of the GNU General Public License
+# along with Grecs. If not, see <>.
+AC_INIT([libgrecs], 1.0, [])
+AM_INIT_AUTOMAKE([1.11 gnu tar-ustar dist-xz std-options silent-rules])
+# Enable silent rules by default:
+# Checks for programs.
+# Checks for libraries.
+# Checks for header files.
+# Checks for library functions.
+# Grecs subsystem
+GRECS_SETUP(., [install tests git2chg])
diff --git a/src/ b/src/
index d895a7e..c6860c5 100644
--- a/src/
+++ b/src/
@@ -17,4 +17,6 @@
libgrecs_la_SOURCES = $(GRECS_SRC)
-include_HEADERS = grecs.h
+include_HEADERS = grecs.h wordsplit.h
+m4datadir = $(datadir)/aclocal
+dist_m4data_DATA = libgrecs.m4
diff --git a/src/ b/src/
index fb6f806..8d9f9ff 100644
--- a/src/
+++ b/src/
@@ -16,4 +16,4 @@
libgrecs_la_SOURCES = $(GRECS_SRC)
-noinst_HEADERS = grecs.h
+noinst_HEADERS += grecs.h wordsplit.h
diff --git a/src/ b/src/
index 6029f2d..709cfb7 100644
--- a/src/
+++ b/src/
@@ -16,4 +16,4 @@
libgrecs_a_SOURCES = $(GRECS_SRC)
-noinst_HEADERS = grecs.h
+noinst_HEADERS += grecs.h wordsplit.h
diff --git a/src/ b/src/
index f246099..50f9170 100644
--- a/src/
+++ b/src/
@@ -29,16 +29,15 @@ GRECS_SRC = \
- wordsplit.c\
- wordsplit.h
+ wordsplit.c
+noinst_HEADERS = yygrecs.h
EXTRA_DIST=grecs-gram.h $(PP_SETUP_FILE)
AM_YFLAGS = -dtv
-# Use a modified ylwrap implementation that understands the --prefix option.
-YLWRAP = $(top_srcdir)/$(grex_topdir)grecs/build-aux/ylwrap --prefix yy_grecs
diff --git a/src/grecs-gram.y b/src/grecs-gram.y
index 3d4cb2f..a805702 100644
--- a/src/grecs-gram.y
+++ b/src/grecs-gram.y
@@ -18,6 +18,7 @@
# include <config.h>
+#include "yygrecs.h"
#include <grecs.h>
#include <grecs-gram.h>
#include <stdlib.h>
diff --git a/src/grecs-lex.l b/src/grecs-lex.l
index d474548..faf6c4c 100644
--- a/src/grecs-lex.l
+++ b/src/grecs-lex.l
@@ -3,6 +3,7 @@
# include <config.h>
+#include "yygrecs.h"
/* grecs - Gray's Extensible Configuration System
diff --git a/src/libgrecs.m4 b/src/libgrecs.m4
new file mode 100644
index 0000000..88ce312
--- a/dev/null
+++ b/src/libgrecs.m4
@@ -0,0 +1,47 @@
+# libgrecs.m4 serial 1
+dnl This file is part of Grecs
+dnl Copyright (C) 2007, 2009-2011 Sergey Poznyakoff
+dnl Grecs is free software; you can redistribute it and/or modify
+dnl it under the terms of the GNU General Public License as published by
+dnl the Free Software Foundation; either version 3, or (at your option)
+dnl any later version.
+dnl Grecs is distributed in the hope that it will be useful,
+dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
+dnl GNU General Public License for more details.
+dnl You should have received a copy of the GNU General Public License
+dnl along with Grecs. If not, see <>.
+dnl AM_LIBGRECS([minversion],[if-found],[if-notfound])
+ cv_libgrecs=no
+ save_LIBS=$LIBS
+ AC_CHECK_LIB([grecs],[grecs_parse],
+ [AC_CHECK_HEADER([grecs.h], [cv_libgrecs=yes])])
+ if test "$cv_libgrecs" = "yes"; then
+ LIBS="$save_LIBS -lgrecs"
+ m4_if($1,,,[
+ AC_RUN_IFELSE([AC_LANG_PROGRAM([[#include <stdlib.h>
+ #include <grecs.h>
+ ]],
+ [exit(grecs_version_cmp("[libgrecs ]$1"));])],
+ [],
+ [cv_libgrecs=no])])
+ if test "$cv_libgrecs" = "yes"; then
+ m4_if($2,,[
+ [Define if <grecs.h> is available])
+ [Define if libgrecs is available])
+ save_LIBS=$LIBS
+ ],[
+ $2])
+ else
+ m4_if($3,,:,[$3])
+ fi
+ LIBS=$save_LIBS
+ fi
+ ])
diff --git a/src/preproc.c b/src/preproc.c
index 28f473f..cff8224 100644
--- a/src/preproc.c
+++ b/src/preproc.c
@@ -48,7 +48,7 @@ struct buffer_ctx {
FILE *infile;
-extern int yy_grecs_flex_debug;
+extern int grecs_yy_flex_debug;
static struct buffer_ctx *context_stack;
static char *linebufbase = NULL;
static size_t linebufsize = 0;
@@ -432,7 +432,7 @@ push_source(const char *name, int once)
ctx->prev = context_stack;
context_stack = ctx;
- if (yy_grecs_flex_debug)
+ if (grecs_yy_flex_debug)
fprintf (stderr, "Processing file `%s'\n", name);
@@ -456,14 +456,14 @@ pop_source()
context_stack = ctx;
if (!context_stack) {
- if (yy_grecs_flex_debug)
+ if (grecs_yy_flex_debug)
fprintf (stderr, "End of input\n");
return 1;
- if (yy_grecs_flex_debug)
+ if (grecs_yy_flex_debug)
fprintf (stderr, "Resuming file `%s' at line %lu\n",
LOCUS.file, (unsigned long) LOCUS.line);
diff --git a/src/yygrecs.h b/src/yygrecs.h
new file mode 100644
index 0000000..1b3bf31
--- a/dev/null
+++ b/src/yygrecs.h
@@ -0,0 +1,28 @@
+/* grecs - Gray's Extensible Configuration System
+ Copyright (C) 2007-2011 Sergey Poznyakoff
+ Grecs 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.
+ Grecs is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ GNU General Public License for more details.
+ You should have received a copy of the GNU General Public License along
+ with Grecs. If not, see <>. */
+#define yyparse grecs_yyparse
+#define yylex grecs_yylex
+#define yyerror grecs_yyerror
+#define yynerrs grecs_yynerrs
+#define yylval grecs_yylval
+#define yylloc grecs_yylloc
+#define yychar grecs_yychar
+#define yydebug grecs_yydebug
+#define yy_flex_debug grecs_yy_flex_debug
+int yylex(void);
+int yyerror(char *s);
diff --git a/tests/ b/tests/
index c2de3e4..26fee59 100644
--- a/tests/
+++ b/tests/
@@ -85,8 +85,8 @@ noinst_PROGRAMS = \
-INCLUDES = -I$(top_srcdir)/@GRECS_SUBDIR@/src

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