* configure.in: Test for bison.

* Makefile.in (YACC): New variable.
	(lib-src/Makefile.in): Edit YACC into the makefile.

	* Makefile.in (YACC): New variable, to be set by top-level Makefile.

Makefile.in

@@ -43,6 +43,7 @@ LN_S=@LN_S@
 CFLAGS=@CFLAGS@
 C_SWITCH_X_SITE=@C_SWITCH_X_SITE@
 LD_SWITCH_X_SITE=@LD_SWITCH_X_SITE@
+YACC=@YACC@
 
 ### These help us choose version- and architecture-specific directories
 ### to install files in.
@@ -256,6 +257,7 @@ lib-src/Makefile: ${srcdir}/lib-src/Makefile.in Makefile
 	  -e 's|^\(VPATH *=\).*$$|\1'"${srcdir}"'/lib-src|'		\
 	  -e 's|^\(archlibdir *=\).*$$|\1'"${archlibdir}"'|'		\
 	  -e 's|^\(ALLOCA *=\).*$$|\1'"${ALLOCA}"'|'			\
+	  -e 's|^\(YACC *=\).*$$|\1'"${YACC}"'|'			\
 	  -e 's|^CC *=.*$$|CC='"${CC}"'|'				\
 	  -e 's|^CFLAGS *=.*$$|CFLAGS='"${CFLAGS}"'|' \
 	  -e 's|^C_SWITCH_SYSTEM *=.*$$|C_SWITCH_SYSTEM='"${C_SWITCH_SYSTEM}"'|' \

configure1.in

@@ -929,6 +929,7 @@ dnl checks for programs
 AC_LN_S
 AC_PROG_CPP
 AC_PROG_INSTALL
+AC_PROG_YACC
 
 dnl checks for UNIX variants that set `DEFS'
 

lib-src/Makefile.in

@@ -19,6 +19,7 @@ CFLAGS=-g
 ALLOCA=
 C_SWITCH_SYSTEM=
 LOADLIBES=
+YACC=yacc
 version=version-not-set
 configname=configuration-name-not-set