Re: bison-1.875: installation as yacc

[Paul Eggert]

> Date: Fri, 3 Jan 2003 18:30:02 -0700 (MST)
> From: "Nelson H. F. Beebe" <address@hidden>
> 
> That's the right direction, but I'd like the default to be to not
> install a yacc command: that is, require --enable-yacc to get such an
> installation.  However, I can live with the other choice as long as I
> know about it in advance.

I'd rather that the default be POSIX-compliant, all other things being
equal.  So I installed this for now:

2003-01-04  Paul Eggert  <address@hidden>

        * configure.ac (AC_ARG_ENABLE): Add --disable-yacc.
        (YACC_SCRIPT, YACC_LIBRARY): New vars to AC_SUBST.
        * lib/Makefile.am (lib_LIBRARIES): liby.a -> @address@hidden
        (EXTRA_LIBRARIES): New var, for liby.a.
        * src/Makefile.am (bin_SCRIPTS): yacc -> @address@hidden
        (EXTRA_SCRIPTS): New var, for yacc.
        * NEWS: Document the above.

--- NEWS.~1.87.~        2003-01-01 01:00:41.000000000 -0800
+++ NEWS        2003-01-04 22:30:05.387282000 -0800
@@ -1,6 +1,11 @@
 Bison News
 ----------
 
+Changes in version 1.875a:
+
+* New configure option --disable-yacc, to disable installation of the
+  yacc command and -ly library introduced in 1.875 for POSIX conformance.
+
 Changes in version 1.875, 2003-01-01:
 
 * The documentation license has been upgraded to version 1.2
--- configure.ac        1 Jan 2003 10:10:41 -0000       1.30
+++ configure.ac        5 Jan 2003 06:20:55 -0000
@@ -59,6 +59,21 @@ if test "${enableval}" = yes; then
   AC_DEFINE([lint], 1, [Define to 1 if the compiler is checking for lint.])
 fi
 
+AC_ARG_ENABLE([yacc],
+  [AC_HELP_STRING([--disable-yacc],
+     [do not build a yacc command or an -ly library])],
+  , [enable_yacc=yes])
+case $enable_yacc in
+yes)
+  YACC_SCRIPT=yacc
+  YACC_LIBRARY=liby.a;;
+*)
+  YACC_SCRIPT=
+  YACC_LIBRARY=;;
+esac
+AC_SUBST([YACC_SCRIPT])
+AC_SUBST([YACC_LIBRARY])
+
 # Checks for programs.
 AC_PROG_LEX
 AC_PROG_YACC
--- lib/Makefile.am     11 Dec 2002 05:26:00 -0000      1.36
+++ lib/Makefile.am     5 Jan 2003 06:20:56 -0000
@@ -17,7 +17,8 @@
 
 AM_CFLAGS = $(WARNING_CFLAGS)
 
-lib_LIBRARIES = liby.a
+lib_LIBRARIES = @YACC_LIBRARY@
+EXTRA_LIBRARIES = liby.a
 noinst_LIBRARIES = libbison.a
 
 # config.h is in build/., and system.h is in src/src/.
--- src/Makefile.am     13 Dec 2002 12:17:59 -0000      1.59
+++ src/Makefile.am     5 Jan 2003 06:20:56 -0000
@@ -29,7 +29,8 @@ INCLUDES = -I$(top_builddir)      \
 LDADD = ../lib/libbison.a $(LIBINTL)
 
 bin_PROGRAMS = bison
-bin_SCRIPTS = yacc
+bin_SCRIPTS = @YACC_SCRIPT@
+EXTRA_SCRIPTS = yacc
 
 bison_SOURCES =                                  \
        LR0.c LR0.h                               \
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