Bison patch to support the "yacc" command

[Paul Eggert]

POSIX requires a "yacc" command, and it's easy, so we might as well
ship one.  I installed this patch.

2002-12-13  Paul Eggert  <address@hidden>

        POSIX requires a "yacc" command.
        * src/Makefile.am (bin_SCRIPTS): New macro, for yacc.
        (MOSTLYCLEANFILES): Add yacc.
        (yacc): New rule.
        * doc/bison.texinfo (Invocation, Bison Options): Mention yacc
        as an alias for bison y.

Index: src/Makefile.am
===================================================================
RCS file: /cvsroot/bison/bison/src/Makefile.am,v
retrieving revision 1.58
diff -p -u -r1.58 Makefile.am
--- src/Makefile.am     11 Dec 2002 05:30:26 -0000      1.58
+++ src/Makefile.am     13 Dec 2002 12:07:41 -0000
@@ -29,6 +29,7 @@ INCLUDES = -I$(top_builddir)      \
 LDADD = ../lib/libbison.a $(LIBINTL)
 
 bin_PROGRAMS = bison
+bin_SCRIPTS = yacc
 
 bison_SOURCES =                                  \
        LR0.c LR0.h                               \
@@ -64,6 +65,13 @@ bison_SOURCES =                                \
        vcg_defaults.h
 
 BUILT_SOURCES = scan-skel.c scan-gram.c parse-gram.c parse-gram.h
+
+MOSTLYCLEANFILES = yacc
+
+yacc:
+       echo '#! /bin/sh' >$@
+       echo 'exec $(bindir)/bison -y "$$@"' >>$@
+       chmod a+x $@
 
 echo:
        echo $(bison_SOURCES) $(noinst_HEADERS)
Index: doc/bison.texinfo
===================================================================
RCS file: /cvsroot/bison/bison/doc/bison.texinfo,v
retrieving revision 1.90
diff -p -u -r1.90 bison.texinfo
--- doc/bison.texinfo   7 Dec 2002 05:50:45 -0000       1.90
+++ doc/bison.texinfo   13 Dec 2002 12:07:43 -0000
@@ -6082,6 +6082,10 @@ bison -d -o @var{output.c++} @var{infile
 @noindent
 will produce @file{output.c++} and @file{outfile.h++}.
 
+For compatibility with @acronym{POSIX}, the standard Bison
+distribution also contains a shell script called @command{yacc} that
+invokes Bison with the @option{-y} option.
+
 @menu
 * Bison Options::     All the options described in detail,
                         in alphabetical order by short options.
@@ -6122,10 +6126,12 @@ Equivalent to @samp{-o y.tab.c}; the par
 @file{y.tab.c}, and the other outputs are called @file{y.output} and
 @file{y.tab.h}.  The purpose of this option is to imitate Yacc's output
 file name conventions.  Thus, the following shell script can substitute
-for Yacc:
+for Yacc, and the Bison distribution contains such a script for
+compatibility with @acronym{POSIX}:
 
 @example
-bison -y $*
+#! /bin/sh
+bison -y "$@"
 @end example
 @end table