diff --git a/src/as/Makefile.Host b/src/as/Makefile.Host
new file mode 100644
index 000000000..d18dafa7e
--- /dev/null
+++ b/src/as/Makefile.Host
@@ -0,0 +1,32 @@
+TOP = ../../..
+include $(TOP)/config/CONFIG_BASE
+
+USR_CFLAGS = -D_NO_PROTO
+
+INC := asDbLib.h asLib.h
+
+#	build lib As from asLib.c:
+#
+LIBSRCS := asLib.c
+LIBRARY := As
+
+
+#	All systems link the libs As, Com, Db (and again Com ??),
+#	generic Unix needs also lib m:
+#
+PROD_LIBS_DEFAULT := m
+PROD_LIBS_WIN32   := -nil-
+PROD_LIBS         := As Com Db Com
+
+PROD := ascheck
+
+include $(TOP)/config/RULES.Host
+
+# Extra rule since asLib_lex.c is included in asLib.c
+#   In my opinion, these objects should really be built
+#   independently.
+asLib$(OBJ): asLib_lex.c ../asLibRoutines.c
+
+clean::
+	@$(RM) asLib.c asLib_lex.c 
+
diff --git a/src/bdt/Makefile.Host b/src/bdt/Makefile.Host
new file mode 100644
index 000000000..d67f2969c
--- /dev/null
+++ b/src/bdt/Makefile.Host
@@ -0,0 +1,10 @@
+TOP = ../../..
+include $(TOP)/config/CONFIG_BASE
+
+INC := bdt.h
+
+LIBSRCS := bdt.c
+
+LIBRARY := Bdt
+
+include $(TOP)/config/RULES.Host
diff --git a/src/bpt/Makefile.Host b/src/bpt/Makefile.Host
new file mode 100644
index 000000000..50ed10509
--- /dev/null
+++ b/src/bpt/Makefile.Host
@@ -0,0 +1,14 @@
+#	Makefile.Host for base/src/bpt
+#
+
+TOP = ../../..
+include $(TOP)/config/CONFIG_BASE
+
+INC := cvtTable.h
+
+SRCS := makeBpt.c
+PROD := makeBpt
+
+include $(TOP)/config/RULES.Host
+
+#	EOF Makefile.Host for base/src/bpt
diff --git a/src/ca/Makefile.Host b/src/ca/Makefile.Host
new file mode 100644
index 000000000..1bd1ca29a
--- /dev/null
+++ b/src/ca/Makefile.Host
@@ -0,0 +1,58 @@
+#	Makefile.Host
+
+TOP = ../../..
+include $(TOP)/config/CONFIG_BASE
+CMPLR = STRICT
+
+#
+#	includes to install from this subproject
+#
+INC += cadef.h
+INC += caerr.h
+INC += caeventmask.h
+INC += caProto.h
+
+#
+#	Contents of library: generic, special and for all systems
+#
+
+# on generic system
+LIBSRCS_DEFAULT := posix_depen.c if_depen.c caRepeater.c
+
+# on WIN32 only
+LIBSRCS_WIN32   := windows_depen.c
+
+# on all systems
+LIBSRCS += iocinf.c
+LIBSRCS += service.c
+LIBSRCS += conn.c
+LIBSRCS += netdb_depen.c
+LIBSRCS += flow_control.c
+LIBSRCS += syncgrp.c
+LIBSRCS += access.c
+LIBSRCS += convert.c
+LIBSRCS += test_event.c
+LIBSRCS += bsd_depen.c
+LIBSRCS += repeater.c
+
+#       Library to build:
+#       lib$(LIBRARY).a  or   ..dll/..exp/..lib
+#
+LIBRARY := ca
+
+#	build LIBRARY as a DLL on WIN32, other systems may ignore this
+LIBTYPE := SHARED
+
+#	WIN32 only: need additional lib to build the DLL and special def-file
+DLL_LIBS := Com
+
+PROD := caRepeater
+
+#	libs needed to build [TEST]PRODUCT
+PROD_LIBS := ca Com
+
+TESTPROD := catime acctst
+
+include $(TOP)/config/RULES.Host
+
+#	EOF Makefile.Host
diff --git a/src/ca/ca.def b/src/ca/ca.def
new file mode 100644
index 000000000..2f0dafa97
--- /dev/null
+++ b/src/ca/ca.def
@@ -0,0 +1,59 @@
+LIBRARY   ca
+
+VERSION   13
+CODE      PRELOAD MOVEABLE DISCARDABLE
+DATA      PRELOAD SINGLE
+
+
+EXPORTS
+
+ca_version
+ca_test_event                 
+ca_task_initialize             
+ca_task_exit                   
+ca_search_and_connect          
+ca_build_and_connect           
+ca_change_connection_event     
+ca_replace_access_rights_event
+ca_add_exception_event         
+ca_clear_channel               
+ca_array_put                   
+ca_array_put_callback          
+ca_array_get                   
+ca_array_get_callback          
+ca_add_masked_array_event      
+ca_clear_event                 
+ca_pend 
+ca_repeater                       
+ca_test_io                     
+ca_flush_io                    
+ca_signal                     
+ca_signal_with_file_and_lineno
+ca_host_name_function       
+ca_add_fd_registration        
+ca_sg_create                  
+ca_sg_delete                  
+ca_sg_block                   
+ca_sg_test                    
+ca_sg_reset                   
+ca_sg_array_get                
+ca_sg_array_put                
+ca_modify_user_name         
+ca_modify_host_name         
+ca_v42_ok                   
+caFetchPortConfig
+caAddConfiguredAddr
+caDiscoverInterfaces
+ca_printf       
+ca_message_text
+ca_message
+cac_gettimeval
+dbr_value_size
+dbr_value_offset
+dbf_text
+dbf_text_invalid
+dbf_text_dim
+dbr_text
+dbr_text_invalid
+dbr_text_dim
+dbr_size