Index: ossp-pkg/l2/Makefile.in
RCS File: /v/ossp/cvs/ossp-pkg/l2/Makefile.in,v
rcsdiff -q -kk '-r1.34' '-r1.35' -u '/v/ossp/cvs/ossp-pkg/l2/Makefile.in,v' 2>/dev/null
--- Makefile.in	2001/11/08 18:31:50	1.34
+++ Makefile.in	2001/11/08 20:28:22	1.35
@@ -53,8 +53,8 @@
 RMDIR       = rmdir
 POD2MAN     = pod2man
 TRUE        = true
-BISON       = bison
-FLEX        = flex
+BISON       = @BISON@
+FLEX        = @FLEX@
 SHTOOL      = ./shtool
 LIBTOOL     = ./libtool
 
@@ -157,10 +157,10 @@
 #   build specification parser/scanner
 l2_spec.c: l2_spec.h l2_spec_parse.h
 l2_spec_scan.lo: l2_spec_scan.c l2_spec_parse.h
-l2_spec_parse.c l2_spec_parse.h: l2_spec_parse.y
-	$(BISON) -d -k -pl2_spec_ -ol2_spec_parse.c l2_spec_parse.y
-l2_spec_scan.c: l2_spec_scan.l
-	$(FLEX) -f -Pl2_spec_ -s -8 -B -ol2_spec_scan.c l2_spec_scan.l
+@M@l2_spec_scan.c: l2_spec_scan.l
+@M@	$(FLEX) -f -Pl2_spec_ -s -8 -B -ol2_spec_scan.c l2_spec_scan.l
+@M@l2_spec_parse.c l2_spec_parse.h: l2_spec_parse.y
+@M@	$(BISON) -d -k -pl2_spec_ -ol2_spec_parse.c l2_spec_parse.y
 
 #   build test suite programs
 l2_test: l2_test.o libl2.la
@@ -243,10 +243,6 @@
 	-$(RMDIR) .libs >/dev/null 2>&1 || $(TRUE)
 	$(RM) $(TARGET_LIBS)
 	$(RM) $(TARGET_TESTS)
-#   remove machine-generated parsers and scanners
-	$(RM) l2_spec_parse.h
-	$(RM) l2_spec_parse.c
-	$(RM) l2_spec_scan.c
 
 #   remove everything which can be regenerated
 #   by "./configure && make all"
Index: ossp-pkg/l2/aclocal.m4
RCS File: /v/ossp/cvs/ossp-pkg/l2/aclocal.m4,v
rcsdiff -q -kk '-r1.7' '-r1.8' -u '/v/ossp/cvs/ossp-pkg/l2/aclocal.m4,v' 2>/dev/null
--- aclocal.m4	2001/11/07 14:22:26	1.7
+++ aclocal.m4	2001/11/08 20:28:22	1.8
@@ -179,6 +179,23 @@
 ])
 
 dnl ##
+dnl ##  Maintainer Support
+dnl ##
+dnl ##  configure.in:
+dnl ##    AC_CHECK_MAINTAINER
+dnl ##
+
+AC_DEFUN(AC_CHECK_MAINTAINER,[
+AC_MSG_CHECKING(for maintainer build mode)
+AC_ARG_ENABLE(maintainer,dnl
+[  --enable-maintainer     enable maintainer build mode (default=no)],
+[ enable_maintainer=yes; M=""  ],
+[ enable_maintainer=no;  M="#" ])dnl
+AC_SUBST(M)
+AC_MSG_RESULT([$enable_maintainer])
+])
+
+dnl ##
 dnl ##  Libtool Glue Code
 dnl ##
 dnl ##  configure.in:
Index: ossp-pkg/l2/configure.ac
RCS File: /v/ossp/cvs/ossp-pkg/l2/configure.ac,v
rcsdiff -q -kk '-r1.14' '-r1.15' -u '/v/ossp/cvs/ossp-pkg/l2/configure.ac,v' 2>/dev/null
--- configure.ac	2001/11/05 11:02:43	1.14
+++ configure.ac	2001/11/08 20:28:22	1.15
@@ -73,8 +73,30 @@
 fi
 AC_PROG_CPP
 AC_CHECK_DEBUGGING
+AC_CHECK_MAINTAINER
 AC_CONFIGURE_LIBTOOL
 
+dnl # check for developer tools:
+dnl # GNU Bison and GNU Flex
+if test ".$enable_maintainer" = .yes; then
+    AC_PATH_PROG(BISON, bison, NA)
+    if test ".$BISON" = .NA; then
+        AC_ERROR([require GNU Bison])
+    fi
+    AC_PATH_PROG(FLEX,  flex,  NA) 
+    if test ".$FLEX" = .NA; then
+        AC_ERROR([require GNU Flex])
+    fi
+    flex_version=`(flex --version 2>/dev/null | awk '{ print $3; }')`
+    case "$flex_version" in
+        2.[[5-6]].[[6-9]] ) ;;
+        * ) AC_ERROR([found GNU Flex version $flex_version; require version >= 2.5.6 (DEVELOPER VERSION!)]) ;;
+    esac
+else
+    AC_PATH_PROG(BISON, bison, true)
+    AC_PATH_PROG(FLEX,  flex,  true) 
+fi
+
 AC_CHECK_LIB(nsl, gethostname)
 if test ".`echo $LIBS | grep nsl`" = . ;then
     AC_CHECK_LIB(nsl, gethostbyname)
Index: ossp-pkg/l2/devtool.conf
RCS File: /v/ossp/cvs/ossp-pkg/l2/devtool.conf,v
rcsdiff -q -kk '-r1.1' '-r1.2' -u '/v/ossp/cvs/ossp-pkg/l2/devtool.conf,v' 2>/dev/null
--- devtool.conf	2001/11/08 09:53:34	1.1
+++ devtool.conf	2001/11/08 20:28:22	1.2
@@ -16,6 +16,7 @@
     ./configure \
         --prefix=/tmp/l2 \
         --disable-shared \
+        --enable-maintainer \
         --enable-debug \
         "$@"