diff --git a/src/toolsComm/antelope/Makefile b/src/toolsComm/antelope/Makefile
index e0b8f3807..a758b0739 100644
--- a/src/toolsComm/antelope/Makefile
+++ b/src/toolsComm/antelope/Makefile
@@ -3,16 +3,4 @@ TOP=../../..
  
 include $(TOP)/configure/CONFIG
  
-HOST_WARN=NO
-
-USR_CFLAGS = -D_NO_PROTO
-
-SRCS=	closure.c error.c lalr.c lr0.c main.c \
-	mkpar.c output.c reader.c skeleton.c \
-	symtab.c verbose.c warshall.c
-
-PROD_DEFAULT=antelope
-PROD_vxWorks= -nil-
-
-include $(TOP)/configure/RULES_BUILD
-
+include $(TOP)/configure/RULES_ARCHS
diff --git a/src/toolsComm/antelope/Makefile.Host b/src/toolsComm/antelope/Makefile.Host
new file mode 100644
index 000000000..076bd1678
--- /dev/null
+++ b/src/toolsComm/antelope/Makefile.Host
@@ -0,0 +1,17 @@
+
+TOP=../../..
+ 
+include $(TOP)/configure/CONFIG
+ 
+HOST_WARN=NO
+
+USR_CFLAGS = -D_NO_PROTO
+
+SRCS=	closure.c error.c lalr.c lr0.c main.c \
+	mkpar.c output.c reader.c skeleton.c \
+	symtab.c verbose.c warshall.c
+
+PROD = antelope
+
+include $(TOP)/configure/RULES_BUILD
+
diff --git a/src/toolsComm/flex/Makefile b/src/toolsComm/flex/Makefile
index c20f0c11c..a758b0739 100644
--- a/src/toolsComm/flex/Makefile
+++ b/src/toolsComm/flex/Makefile
@@ -3,35 +3,4 @@ TOP=../../..
  
 include $(TOP)/configure/CONFIG
  
-HOST_WARN=NO
- 
-YACC = $(EYACC)
-YACCOPT = -l -d
-
-SKELETON_FILE=include/flex.skel.static
-
-#	ARCH_CLASS hp700 needs special flags,
-#	everything else uses DEFAULT:
-#
-USR_CFLAGS_DEFAULT := -DUSG
-USR_CFLAGS_hp700 := -DSCO_UNIX
-
-#	This applies to all arch.classes:
-#
-USR_CFLAGS = -DDEFAULT_SKELETON_FILE=\"$(SKELETON_FILE)\"
-
-INC += flex.skel.static
-
-# main.c is included in parse.c
-#
-SRCS := ccl.c dfa.c ecs.c gen.c misc.c nfa.c sym.c tblcmp.c parse.c
-
-PROD_DEFAULT := e_flex
-PROD_vxWorks := -nil-
-
-include $(TOP)/configure/RULES_BUILD
-
-clean::
-	$(RM) parse.c parse.h
-
-#	EOF Makefile.Host for base/src/toolsComm/flex
+include $(TOP)/configure/RULES_ARCHS
diff --git a/src/toolsComm/flex/Makefile.Host b/src/toolsComm/flex/Makefile.Host
new file mode 100644
index 000000000..9691fea90
--- /dev/null
+++ b/src/toolsComm/flex/Makefile.Host
@@ -0,0 +1,36 @@
+
+TOP=../../..
+ 
+include $(TOP)/configure/CONFIG
+ 
+HOST_WARN=NO
+ 
+YACC = $(EYACC)
+YACCOPT = -l -d
+
+SKELETON_FILE=include/flex.skel.static
+
+#	ARCH_CLASS hp700 needs special flags,
+#	everything else uses DEFAULT:
+#
+USR_CFLAGS_DEFAULT := -DUSG
+USR_CFLAGS_hp700 := -DSCO_UNIX
+
+#	This applies to all arch.classes:
+#
+USR_CFLAGS = -DDEFAULT_SKELETON_FILE=\"$(SKELETON_FILE)\"
+
+INC += flex.skel.static
+
+# main.c is included in parse.c
+#
+SRCS := ccl.c dfa.c ecs.c gen.c misc.c nfa.c sym.c tblcmp.c parse.c
+
+PROD = e_flex
+
+include $(TOP)/configure/RULES_BUILD
+
+clean::
+	$(RM) parse.c parse.h
+
+#	EOF Makefile.Host for base/src/toolsComm/flex
diff --git a/src/util/Makefile b/src/util/Makefile
index cf4cfe608..d56852bad 100644
--- a/src/util/Makefile
+++ b/src/util/Makefile
@@ -3,28 +3,4 @@ TOP=../..
 
 include $(TOP)/configure/CONFIG
 
-CMPLR = STRICT
-
-#	DEFAULT Unix needs lib m, every system needs libs ca & Com:
-SYS_PROD_LIBS_DEFAULT := m
-SYS_PROD_LIBS_WIN32   := -nil-
-PROD_LIBS         := ca Com
-#
-# Added winmm user32 for the non-dll build
-#
-SYS_PROD_LIBS_WIN32 := ws2_32 advapi32 user32
-PROD_DEFAULT = ca_test iocLogServer startCArepeater
-PROD_WIN32   = ca_test iocLogServer
-PROD_vxWorks = ca_test.o
-
-SCRIPTS_solaris := S99logServer S99caRepeater 
-
-include $(TOP)/configure/RULES_BUILD
- 
-S99%: ../rc2.%
-	@/usr/bin/sed -e s%:EPICS:%`chdir $(TOP); /usr/bin/pwd`% \
-		-e s%:INSTALL_BIN:%`chdir $(INSTALL_BIN); /usr/bin/pwd`% \
-		$< >$@
-
-#	EOF Makefile.Host for base/src/util
-
+include $(TOP)/configure/RULES_ARCHS
diff --git a/src/util/Makefile.Host b/src/util/Makefile.Host
new file mode 100644
index 000000000..e4d8ab79b
--- /dev/null
+++ b/src/util/Makefile.Host
@@ -0,0 +1,30 @@
+
+TOP=../..
+
+include $(TOP)/configure/CONFIG
+
+CMPLR = STRICT
+
+#	DEFAULT Unix needs lib m, every system needs libs ca & Com:
+SYS_PROD_LIBS_DEFAULT := m
+SYS_PROD_LIBS_WIN32   := -nil-
+PROD_LIBS         := ca Com
+#
+# Added winmm user32 for the non-dll build
+#
+SYS_PROD_LIBS_WIN32 := ws2_32 advapi32 user32
+PROD_DEFAULT = ca_test iocLogServer startCArepeater
+PROD_WIN32   = ca_test iocLogServer
+PRODIOC_vxWorks = ca_test.o
+
+SCRIPTS_solaris := S99logServer S99caRepeater 
+
+include $(TOP)/configure/RULES_BUILD
+ 
+S99%: ../rc2.%
+	@/usr/bin/sed -e s%:EPICS:%`chdir $(TOP); /usr/bin/pwd`% \
+		-e s%:INSTALL_BIN:%`chdir $(INSTALL_BIN); /usr/bin/pwd`% \
+		$< >$@
+
+#	EOF Makefile.Host for base/src/util
+
diff --git a/src/util/Makefile.Ioc b/src/util/Makefile.Ioc
new file mode 100644
index 000000000..4d6de96c8
--- /dev/null
+++ b/src/util/Makefile.Ioc
@@ -0,0 +1,10 @@
+
+TOP=../..
+
+include $(TOP)/configure/CONFIG
+
+ca_test_SRCS = ca_test.c
+TARGETS = ca_test.o
+
+include $(TOP)/configure/RULES_BUILD
+