Put helpful comments in Makefile

src/makeBaseApp/top/simpleApp/src/Makefile

@@ -4,12 +4,70 @@ include $(TOP)/configure/CONFIG
 #----------------------------------------
 #  ADD MACRO DEFINITIONS AFTER THIS LINE
 
-#USR_CFLAGS +=
-PROD_LIBS       += ca
-PROD_LIBS       += Db
-PROD_LIBS       += Com
+#=======Create Host Programs=======
+ca_DIR = $(EPICS_BASE_LIB)
+Com_DIR = $(EPICS_BASE_LIB)
+
+#USR_CFLAGS +=
+
+# For Each Host Product define the following:1
+#PROD_HOST = <product>
+#<product>_SRCS += xxx.c 
+#...
+#<product>_LIBS += ca
+#<product>_LIBS += Com
+
+#========Database Products================
+
+# xxxRecord.h will be created from xxxRecord.dbd
+#DBDINC += xxxRecord
+
+#<name>.dbd will be created from <name>Include.dbd
+#DBD += <name>.dbd
+
+#=======Create an IOC program=====
+
+#PROD_IOC = <name>
+
+#<name>_SRCS += xxx.c # .cpp .stt etc
+#...
+#<name>_registerRecordDeviceDriver.cpp will be created from <name>.dbd
+#<name>_SRCS += <name>_registerRecordDeviceDriver.cpp
+
+## If <name> is to be built for both vxWorks and for the host then
+#<name>_SRCS_DEFAULT += <name>Main.cpp
+#<name>_SRCS_vxWorks += -nil-
+
+#The following adds support from base/src/vxWorks
+#<name>_OBJS_vxWorks += $(EPICS_BASE_BIN)/vxComLibrary
+
+##Define all possible libraries
+## Use win32 object libs for registered support
+#<name>_LIBS_win32 += recIocObj
+#<name>_LIBS_win32 += softDevIocObj
+#<name>_LIBS_win32 += testDevIocObj
+#<name>_LIBS_DEFAULT += recIoc
+#<name>_LIBS_DEFAULT += softDevIoc
+#<name>_LIBS_DEFAULT += testDevIoc
+
+#<name>_LIBS += iocsh
+#<name>_LIBS += miscIoc
+#<name>_LIBS += rsrvIoc
+#<name>_LIBS += dbtoolsIoc
+#<name>_LIBS += asIoc
+#<name>_LIBS += dbIoc
+#<name>_LIBS += registryIoc
+#<name>_LIBS += dbStaticIoc
+#<name>_LIBS += ca
+#<name>_LIBS += Com
+
+## If sequence programs are being built
+#<name>_LIBS += seq
+#<name>_LIBS += pv
+#seq_DIR    = $(SNCSEQ_LIB)
+#pv_DIR     = $(SNCSEQ_LIB)
+
 
-#PROD_HOST = 
 
 include $(TOP)/configure/RULES
 #----------------------------------------