Remove .context kludge from apps/ directory

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5455 42af7a65-404d-4744-a932-0658087f49c3

53 files changed, 318 insertions, 201 deletions

diff --git a/apps/ChangeLog.txt b/apps/ChangeLog.txt
index 886526b187..8999047ef1 100644
--- a/apps/ChangeLog.txt
+++ b/apps/ChangeLog.txt
@@ -440,4 +440,8 @@
 	  files.  It makes sense for 'leaf' Makefiles to have this dependency,
 	  but it does not make sense for upper-level Makefiles.
 	* namedapp/: Renamed to builtins in preparation for another change.
+	* .context:  Removed the .context kludge.  This causes lots of problems
+	  when changing configurations because there is no easy way to get the
+	  system to rebuild the context.  Now, the context will be rebuilt
+	  whenever there is a change in either .config or the Makefile.
 
diff --git a/apps/Make.defs b/apps/Make.defs
index 12b351e7f2..217137a29c 100644
--- a/apps/Make.defs
+++ b/apps/Make.defs
@@ -34,8 +34,11 @@
 #
 ############################################################################
 
+BUILTIN_REGISTRY = $(APPDIR)$(DELIM)builtin$(DELIM)registry
+
 define REGISTER
-	@echo "Register: $1"
-	@echo "{ \"$1\", $2, $3, $4 }," >> "$(APPDIR)/builtin/builtin_list.h"
-	@echo "EXTERN int $4(int argc, char *argv[]);" >> "$(APPDIR)/builtin/builtin_proto.h"
+	$(Q) echo "Register: $1"
+	$(Q) echo "{ \"$1\", $2, $3, $4 }," > "$(BUILTIN_REGISTRY)$(DELIM)$4.bdat"
+	$(Q) echo "int $4(int argc, char *argv[]);" > "$(BUILTIN_REGISTRY)$(DELIM)$4.pdat"
+	$(Q) touch "$(BUILTIN_REGISTRY)$(DELIM).updated"
 endef
diff --git a/apps/Makefile b/apps/Makefile
index 299560195c..cf6b33cd7e 100644
--- a/apps/Makefile
+++ b/apps/Makefile
@@ -132,21 +132,16 @@ $(INSTALLED_APPS):
 
 $(BIN):	$(INSTALLED_APPS)
 
-.context:
+context:
 ifeq ($(CONFIG_WINDOWS_NATIVE),y)
 	$(Q) for %%G in ($(INSTALLED_APPS)) do ( \
-		if exist %%G\.context del /f /q %%G\.context \
 		$(MAKE) -C %%G TOPDIR="$(TOPDIR)" APPDIR="$(APPDIR)" context \
 	)
 else
 	$(Q) for dir in $(INSTALLED_APPS) ; do \
-		rm -f $$dir/.context ; \
 		$(MAKE) -C $$dir TOPDIR="$(TOPDIR)" APPDIR="$(APPDIR)" context ; \
 	done
 endif
-	$(Q) touch $@
-
-context: .context
 
 .depend: context Makefile $(SRCS)
 ifeq ($(CONFIG_WINDOWS_NATIVE),y)
@@ -183,7 +178,6 @@ ifeq ($(CONFIG_WINDOWS_NATIVE),y)
 		$(MAKE) -C %%G distclean TOPDIR="$(TOPDIR)" APPDIR="$(APPDIR)" \
 	)
 	$(call DELFILE, .config)
-	$(call DELFILE, .context)
 	$(call DELFILE, .depend)
 	$(Q) ( if exist  external ( \
 		echo ********************************************************" \
@@ -195,7 +189,6 @@ else
 		$(MAKE) -C $$dir distclean TOPDIR="$(TOPDIR)" APPDIR="$(APPDIR)"; \
 	done
 	$(call DELFILE, .config)
-	$(call DELFILE, .context)
 	$(call DELFILE, .depend)
 	$(Q) ( if [ -e external ]; then \
 		echo "********************************************************"; \
diff --git a/apps/builtin/Makefile b/apps/builtin/Makefile
index 72ba0347f7..6633146e93 100644
--- a/apps/builtin/Makefile
+++ b/apps/builtin/Makefile
@@ -33,12 +33,9 @@
 #
 ############################################################################
 
--include $(TOPDIR)/.config
 -include $(TOPDIR)/Make.defs
 include $(APPDIR)/Make.defs
 
-# NSH Library
-
 # Source and object files
 
 ASRCS		=
@@ -70,7 +67,7 @@ VPATH		=
 # Build Targets
 
 all:	.built
-.PHONY: .context context depend clean distclean
+.PHONY: context depend clean distclean
 
 $(AOBJS): %$(OBJEXT): %.S
 	$(call ASSEMBLE, $<, $@)
@@ -78,16 +75,27 @@ $(AOBJS): %$(OBJEXT): %.S
 $(COBJS): %$(OBJEXT): %.c
 	$(call COMPILE, $<, $@)
 
-.built: $(OBJS)
+builtin_list.h: registry/.updated
+	$(call DELFILE, builtin_list.h)
+ifeq ($(CONFIG_WINDOWS_NATIVE),y)
+	$(Q) for /f %%G in ('dir /b registry\*.bdat`) do ( type registry\%%G >> builtin_list.h )
+else
+	$(Q) for file in `ls registry/*.bdat`; do cat $$file >> builtin_list.h; done
+endif
+
+builtin_proto.h: registry/.updated
+	$(call DELFILE, builtin_proto.h)
+ifeq ($(CONFIG_WINDOWS_NATIVE),y)
+	$(Q) for /f %%G in ('dir /b registry\*.pdat`) do ( type registry\%%G >> builtin_proto.h )
+else
+	$(Q) for file in `ls registry/*.pdat`; do cat $$file >> builtin_proto.h; done
+endif
+
+.built: builtin_list.h builtin_proto.h $(OBJS)
 	$(call ARCHIVE, $(BIN), $(OBJS))
 	$(Q) touch .built
 
-.context:
-	@echo "/* List of application requirements, generated during make context. */" > builtin_list.h
-	@echo "/* List of application entry points, generated during make context. */" > builtin_proto.h
-	$(Q) touch $@
-
-context: .context
+context:
 
 .depend: Makefile $(SRCS)
 	$(Q) $(MKDEP) $(ROOTDEPPATH) "$(CC)" -- $(CFLAGS) -- $(SRCS) >Make.dep
@@ -100,11 +108,10 @@ clean:
 	$(call CLEAN)
 
 distclean: clean
-	$(call DELFILE, .context)
+	$(Q) $(MAKE) -C registry distclean TOPDIR="$(TOPDIR)" APPDIR="$(APPDIR)"
 	$(call DELFILE, Make.dep)
 	$(call DELFILE, .depend)
 	$(call DELFILE, builtin_list.h)
 	$(call DELFILE, builtin_proto.h)
 
 -include Make.dep
-
diff --git a/apps/builtin/registry/Makefile b/apps/builtin/registry/Makefile
new file mode 100644
index 0000000000..9117f53d6e
--- /dev/null
+++ b/apps/builtin/registry/Makefile
@@ -0,0 +1,54 @@
+############################################################################
+# apps/builtin/registry/Makefile
+#
+#   Copyright (C) 2012 Gregory Nutt. All rights reserved.
+#   Author: Gregory Nutt <gnutt@nuttx.org>
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in
+#    the documentation and/or other materials provided with the
+#    distribution.
+# 3. Neither the name NuttX nor the names of its contributors may be
+#    used to endorse or promote products derived from this software
+#    without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+#
+############################################################################
+
+-include $(TOPDIR)/Make.defs
+include $(APPDIR)/Make.defs
+
+# NSH Library
+
+all:
+.PHONY: context depend clean distclean
+
+context:
+
+depend:
+
+clean:
+	$(call CLEAN)
+
+distclean: clean
+	$(call DELFILE, *.bdat)
+	$(call DELFILE, *.pdat)
+	$(call DELFILE, .updated)
diff --git a/apps/examples/adc/Makefile b/apps/examples/adc/Makefile
index 69862b383d..55bc259e4b 100644
--- a/apps/examples/adc/Makefile
+++ b/apps/examples/adc/Makefile
@@ -83,13 +83,14 @@ $(COBJS): %$(OBJEXT): %.c
 	$(call ARCHIVE, $(BIN), $(OBJS))
 	@touch .built
 
-.context:
 ifeq ($(CONFIG_NSH_BUILTIN_APPS),y)
+$(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat: $(TOPDIR)$(DELIM).config Makefile
 	$(call REGISTER,$(APPNAME),$(PRIORITY),$(STACKSIZE),$(APPNAME)_main)
-	@touch $@
-endif
 
-context: .context
+context: $(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat
+else
+context:
+endif
 
 .depend: Makefile $(SRCS)
 	@$(MKDEP) $(ROOTDEPPATH) "$(CC)" -- $(CFLAGS) -- $(SRCS) >Make.dep
diff --git a/apps/examples/buttons/Makefile b/apps/examples/buttons/Makefile
index 77c1cd67df..ac1f2f05aa 100644
--- a/apps/examples/buttons/Makefile
+++ b/apps/examples/buttons/Makefile
@@ -83,13 +83,14 @@ $(COBJS): %$(OBJEXT): %.c
 	$(call ARCHIVE, $(BIN), $(OBJS))
 	@touch .built
 
-.context:
 ifeq ($(CONFIG_NSH_BUILTIN_APPS),y)
+$(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat: $(TOPDIR)$(DELIM).config Makefile
 	$(call REGISTER,$(APPNAME),$(PRIORITY),$(STACKSIZE),$(APPNAME)_main)
-	@touch $@
-endif
 
-context: .context
+context: $(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat
+else
+context:
+endif
 
 .depend: Makefile $(SRCS)
 	@$(MKDEP) $(ROOTDEPPATH) "$(CC)" -- $(CFLAGS) -- $(SRCS) >Make.dep
diff --git a/apps/examples/can/Makefile b/apps/examples/can/Makefile
index 8924797e37..5df96e1e7d 100644
--- a/apps/examples/can/Makefile
+++ b/apps/examples/can/Makefile
@@ -83,13 +83,14 @@ $(COBJS): %$(OBJEXT): %.c
 	$(call ARCHIVE, $(BIN), $(OBJS))
 	@touch .built
 
-.context:
 ifeq ($(CONFIG_NSH_BUILTIN_APPS),y)
+$(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat: $(TOPDIR)$(DELIM).config Makefile
 	$(call REGISTER,$(APPNAME),$(PRIORITY),$(STACKSIZE),$(APPNAME)_main)
-	@touch $@
-endif
 
-context: .context
+context: $(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat
+else
+context:
+endif
 
 .depend: Makefile $(SRCS)
 	@$(MKDEP) $(ROOTDEPPATH) "$(CC)" -- $(CFLAGS) -- $(SRCS) >Make.dep
diff --git a/apps/examples/cdcacm/Makefile b/apps/examples/cdcacm/Makefile
index e8d03807d8..d9e19e9064 100644
--- a/apps/examples/cdcacm/Makefile
+++ b/apps/examples/cdcacm/Makefile
@@ -87,12 +87,17 @@ $(COBJS): %$(OBJEXT): %.c
 	$(call ARCHIVE, $(BIN), $(OBJS))
 	@touch .built
 
-.context:
+ifeq ($(CONFIG_NSH_BUILTIN_APPS),y)
+$(BUILTIN_REGISTRY)$(DELIM)$(APPNAME1)_main.bdat: $(TOPDIR)$(DELIM).config Makefile
 	$(call REGISTER,$(APPNAME1),$(PRIORITY1),$(STACKSIZE1),$(APPNAME1)_main)
+
+$(BUILTIN_REGISTRY)$(DELIM)$(APPNAME2)_main.bdat: $(TOPDIR)$(DELIM).config Makefile
 	$(call REGISTER,$(APPNAME2),$(PRIORITY2),$(STACKSIZE2),$(APPNAME2)_main)
-	@touch $@
 
-context: .context
+context: $(BUILTIN_REGISTRY)$(DELIM)$(APPNAME1)_main.bdat $(BUILTIN_REGISTRY)$(DELIM)$(APPNAME2)_main.bdat
+else
+context:
+endif
 
 .depend: Makefile $(SRCS)
 	@$(MKDEP) $(ROOTDEPPATH) "$(CC)" -- $(CFLAGS) -- $(SRCS) >Make.dep
diff --git a/apps/examples/composite/Makefile b/apps/examples/composite/Makefile
index 016ccbe3eb..b1fe493082 100644
--- a/apps/examples/composite/Makefile
+++ b/apps/examples/composite/Makefile
@@ -87,14 +87,17 @@ $(COBJS): %$(OBJEXT): %.c
 	$(call ARCHIVE, $(BIN), $(OBJS))
 	@touch .built
 
-.context:
 ifeq ($(CONFIG_NSH_BUILTIN_APPS),y)
+$(BUILTIN_REGISTRY)$(DELIM)$(APPNAME1)_main.bdat: $(TOPDIR)$(DELIM).config Makefile
 	$(call REGISTER,$(APPNAME1),$(PRIORITY1),$(STACKSIZE1),$(APPNAME1)_main)
+
+$(BUILTIN_REGISTRY)$(DELIM)$(APPNAME2)_main.bdat: $(TOPDIR)$(DELIM).config Makefile
 	$(call REGISTER,$(APPNAME2),$(PRIORITY2),$(STACKSIZE2),$(APPNAME2)_main)
-	@touch $@
-endif
 
-context: .context
+context: $(BUILTIN_REGISTRY)$(DELIM)$(APPNAME1)_main.bdat $(BUILTIN_REGISTRY)$(DELIM)$(APPNAME2)_main.bdat
+else
+context:
+endif
 
 .depend: Makefile $(SRCS)
 	@$(MKDEP) $(ROOTDEPPATH) "$(CC)" -- $(CFLAGS) -- $(SRCS) >Make.dep
diff --git a/apps/examples/cxxtest/Makefile b/apps/examples/cxxtest/Makefile
index f0764b6e94..cba9f0a4f0 100644
--- a/apps/examples/cxxtest/Makefile
+++ b/apps/examples/cxxtest/Makefile
@@ -100,13 +100,14 @@ $(CXXOBJS): %$(OBJEXT): %.cxx
 	$(call ARCHIVE, $(BIN), $(OBJS))
 	@touch .built
 
-.context:
 ifeq ($(CONFIG_EXAMPLES_HELLOXX_BUILTIN),y)
+$(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat: $(TOPDIR)$(DELIM).config Makefile
 	$(call REGISTER,$(APPNAME),$(PRIORITY),$(STACKSIZE),$(APPNAME)_main)
-	@touch $@
-endif
 
-context: .context
+context: $(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat
+else
+context:
+endif
 
 .depend: Makefile $(SRCS)
 	@$(MKDEP) $(ROOTDEPPATH) "$(CXX)" -- $(CXXFLAGS) -- $(SRCS) >Make.dep
diff --git a/apps/examples/dhcpd/Makefile b/apps/examples/dhcpd/Makefile
index a41db5cdd7..0522d4cc47 100644
--- a/apps/examples/dhcpd/Makefile
+++ b/apps/examples/dhcpd/Makefile
@@ -83,13 +83,14 @@ $(COBJS): %$(OBJEXT): %.c
 	$(call ARCHIVE, $(BIN), $(OBJS))
 	@touch .built
 
-.context:
 ifeq ($(CONFIG_NSH_BUILTIN_APPS),y)
+$(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat: $(TOPDIR)$(DELIM).config Makefile
 	$(call REGISTER,$(APPNAME),$(PRIORITY),$(STACKSIZE),$(APPNAME)_main)
-	@touch $@
-endif
 
-context: .context
+context: $(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat
+else
+context:
+endif
 
 .depend: Makefile $(SRCS)
 	@$(MKDEP) $(ROOTDEPPATH) "$(CC)" -- $(CFLAGS) -- $(SRCS) >Make.dep
diff --git a/apps/examples/discover/Makefile b/apps/examples/discover/Makefile
index 2ce52a18e9..b0285fbff3 100644
--- a/apps/examples/discover/Makefile
+++ b/apps/examples/discover/Makefile
@@ -84,13 +84,14 @@ $(COBJS): %$(OBJEXT): %.c
 	$(call ARCHIVE, $(BIN), $(OBJS))
 	@touch .built
 
-.context:
 ifeq ($(CONFIG_NSH_BUILTIN_APPS),y)
+$(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat: $(TOPDIR)$(DELIM).config Makefile
 	$(call REGISTER,$(APPNAME),$(PRIORITY),$(STACKSIZE),$(APPNAME)_main)
-	@touch $@
-endif
 
-context: .context
+context: $(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat
+else
+context:
+endif
 
 .depend: Makefile $(SRCS)
 	@$(MKDEP) $(ROOTDEPPATH) "$(CC)" -- $(CFLAGS) -- $(SRCS) >Make.dep
diff --git a/apps/examples/ftpc/Makefile b/apps/examples/ftpc/Makefile
index 29960fb94c..e09779abdf 100644
--- a/apps/examples/ftpc/Makefile
+++ b/apps/examples/ftpc/Makefile
@@ -83,11 +83,14 @@ $(COBJS): %$(OBJEXT): %.c
 
 # Register application
 
-.context:
+ifeq ($(CONFIG_NSH_BUILTIN_APPS),y)
+$(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat: $(TOPDIR)$(DELIM).config Makefile
 	$(call REGISTER,$(APPNAME),$(PRIORITY),$(STACKSIZE),$(APPNAME)_main)
-	@touch $@
 
-context: .context
+context: $(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat
+else
+context:
+endif
 
 # Create dependencies
 
@@ -102,7 +105,6 @@ clean:
 	$(call CLEAN)
 
 distclean: clean
-	$(call DELFILE, .context)
 	$(call DELFILE, Make.dep)
 	$(call DELFILE, .depend)
 
diff --git a/apps/examples/ftpd/Makefile b/apps/examples/ftpd/Makefile
index 0b43b85a9c..dc53bfdeab 100644
--- a/apps/examples/ftpd/Makefile
+++ b/apps/examples/ftpd/Makefile
@@ -78,14 +78,17 @@ $(COBJS): %$(OBJEXT): %.c
 	$(call ARCHIVE, $(BIN), $(OBJS))
 	@touch .built
 
-.context:
 ifeq ($(CONFIG_NSH_BUILTIN_APPS),y)
+$(BUILTIN_REGISTRY)$(DELIM)ftpd_start.bdat: $(TOPDIR)$(DELIM).config Makefile
 	$(call REGISTER,ftpd_start,SCHED_PRIORITY_DEFAULT,2048,ftpd_start)
+
+$(BUILTIN_REGISTRY)$(DELIM)ftpd_stop.bdat: $(TOPDIR)$(DELIM).config Makefile
 	$(call REGISTER,ftpd_stop,SCHED_PRIORITY_DEFAULT,2048,ftpd_stop)
-	@touch $@
-endif
 
-context: .context
+context: $(BUILTIN_REGISTRY)$(DELIM)ftpd_start.bdat $(BUILTIN_REGISTRY)$(DELIM)ftpd_stop.bdat
+else
+context:
+endif
 
 .depend: Makefile $(SRCS)
 	@$(MKDEP) $(ROOTDEPPATH) "$(CC)" -- $(CFLAGS) -- $(SRCS) >Make.dep
diff --git a/apps/examples/hello/Makefile b/apps/examples/hello/Makefile
index 560b0da358..c4e6f735a5 100644
--- a/apps/examples/hello/Makefile
+++ b/apps/examples/hello/Makefile
@@ -83,13 +83,14 @@ $(COBJS): %$(OBJEXT): %.c
 	$(call ARCHIVE, $(BIN), $(OBJS))
 	@touch .built
 
-.context:
 ifeq ($(CONFIG_EXAMPLES_HELLO_BUILTIN),y)
+$(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat: $(TOPDIR)$(DELIM).config Makefile
 	$(call REGISTER,$(APPNAME),$(PRIORITY),$(STACKSIZE),$(APPNAME)_main)
-	@touch $@
-endif
 
-context: .context
+context: $(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat
+else
+context:
+endif
 
 .depend: Makefile $(SRCS)
 	@$(MKDEP) $(ROOTDEPPATH) "$(CC)" -- $(CFLAGS) -- $(SRCS) >Make.dep
diff --git a/apps/examples/helloxx/Makefile b/apps/examples/helloxx/Makefile
index 062da7d588..df1b360a50 100644
--- a/apps/examples/helloxx/Makefile
+++ b/apps/examples/helloxx/Makefile
@@ -100,13 +100,14 @@ $(CXXOBJS): %$(OBJEXT): %.cxx
 	$(call ARCHIVE, $(BIN), $(OBJS))
 	@touch .built
 
-.context:
 ifeq ($(CONFIG_EXAMPLES_HELLOXX_BUILTIN),y)
+$(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat: $(TOPDIR)$(DELIM).config Makefile
 	$(call REGISTER,$(APPNAME),$(PRIORITY),$(STACKSIZE),$(APPNAME)_main)
-	@touch $@
-endif
 
-context: .context
+context: $(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat
+else
+context:
+endif
 
 .depend: Makefile $(SRCS)
 	@$(MKDEP) $(ROOTDEPPATH) "$(CC)" -- $(CFLAGS) -- $(SRCS) >Make.dep
diff --git a/apps/examples/json/Makefile b/apps/examples/json/Makefile
index c3e9203f93..1e42757b86 100644
--- a/apps/examples/json/Makefile
+++ b/apps/examples/json/Makefile
@@ -81,13 +81,14 @@ $(COBJS): %$(OBJEXT): %.c
 	$(call ARCHIVE, $(BIN), $(OBJS))
 	@touch .built
 
-.context:
 ifeq ($(CONFIG_NSH_BUILTIN_APPS),y)
+$(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat: $(TOPDIR)$(DELIM).config Makefile
 	$(call REGISTER,$(APPNAME),$(PRIORITY),$(STACKSIZE),$(APPNAME)_main)
-	@touch $@
-endif
 
-context: .context
+context: $(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat
+else
+context:
+endif
 
 .depend: Makefile $(SRCS)
 	@$(MKDEP) $(ROOTDEPPATH) "$(CC)" -- $(CFLAGS) -- $(SRCS) >Make.dep
diff --git a/apps/examples/keypadtest/Makefile b/apps/examples/keypadtest/Makefile
index 3de0556a2b..0c40a5c6c1 100644
--- a/apps/examples/keypadtest/Makefile
+++ b/apps/examples/keypadtest/Makefile
@@ -83,13 +83,14 @@ $(COBJS): %$(OBJEXT): %.c
 	$(call ARCHIVE, $(BIN), $(OBJS))
 	@touch .built
 
-.context:
 ifeq ($(CONFIG_NSH_BUILTIN_APPS),y)
+$(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat: $(TOPDIR)$(DELIM).config Makefile
 	$(call REGISTER,$(APPNAME),$(PRIORITY),$(STACKSIZE),$(APPNAME)_main)
-	@touch $@
-endif
 
-context: .context
+context: $(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat
+else
+context:
+endif
 
 .depend: Makefile $(SRCS)
 	@$(MKDEP) $(ROOTDEPPATH) "$(CC)" -- $(CFLAGS) -- $(SRCS) >Make.dep
diff --git a/apps/examples/lcdrw/Makefile b/apps/examples/lcdrw/Makefile
index ed612e0bec..61d6bcce6e 100644
--- a/apps/examples/lcdrw/Makefile
+++ b/apps/examples/lcdrw/Makefile
@@ -83,13 +83,14 @@ $(COBJS): %$(OBJEXT): %.c
 	$(call ARCHIVE, $(BIN), $(OBJS))
 	@touch .built
 
-.context:
 ifeq ($(CONFIG_EXAMPLES_LCDRW_BUILTIN),y)
+$(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat: $(TOPDIR)$(DELIM).config Makefile
 	$(call REGISTER,$(APPNAME),$(PRIORITY),$(STACKSIZE),$(APPNAME)_main)
-	@touch $@
-endif
 
-context: .context
+context: $(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat
+else
+context:
+endif
 
 .depend: Makefile $(SRCS)
 	@$(MKDEP) $(ROOTDEPPATH) "$(CC)" -- $(CFLAGS) -- $(SRCS) >Make.dep
diff --git a/apps/examples/modbus/Makefile b/apps/examples/modbus/Makefile
index d6caefe81d..da31c3b524 100644
--- a/apps/examples/modbus/Makefile
+++ b/apps/examples/modbus/Makefile
@@ -83,13 +83,14 @@ $(COBJS): %$(OBJEXT): %.c
 	$(call ARCHIVE, $(BIN), $(OBJS))
 	@touch .built
 
-.context:
 ifeq ($(CONFIG_NSH_BUILTIN_APPS),y)
+$(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat: $(TOPDIR)$(DELIM).config Makefile
 	$(call REGISTER,$(APPNAME),$(PRIORITY),$(STACKSIZE),$(APPNAME)_main)
-	@touch $@
-endif
 
-context: .context
+context: $(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat
+else
+context:
+endif
 
 .depend: Makefile $(SRCS)
 	@$(MKDEP) $(ROOTDEPPATH) "$(CC)" -- $(CFLAGS) -- $(SRCS) >Make.dep
diff --git a/apps/examples/nettest/Makefile b/apps/examples/nettest/Makefile
index 085b9406d8..e6f56e7659 100644
--- a/apps/examples/nettest/Makefile
+++ b/apps/examples/nettest/Makefile
@@ -116,13 +116,14 @@ $(HOST_BIN): $(HOST_OBJS)
 	$(call ARCHIVE, $(BIN), $(TARG_OBJS))
 	@touch .built
 
-.context:
 ifeq ($(CONFIG_NSH_BUILTIN_APPS),y)
+$(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat: $(TOPDIR)$(DELIM).config Makefile
 	$(call REGISTER,$(APPNAME),$(PRIORITY),$(STACKSIZE),$(APPNAME)_main)
-	@touch $@
-endif
 
-context: .context
+context: $(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat
+else
+context:
+endif
 
 .depend: Makefile $(TARG_SRCS)
 	@$(MKDEP) $(ROOTDEPPATH) "$(CC)" -- $(CFLAGS) -- $(TARG_SRCS) >Make.dep
diff --git a/apps/examples/nx/Makefile b/apps/examples/nx/Makefile
index ad2bee84ea..4474a58c3f 100644
--- a/apps/examples/nx/Makefile
+++ b/apps/examples/nx/Makefile
@@ -86,13 +86,14 @@ $(COBJS): %$(OBJEXT): %.c
 	$(call ARCHIVE, $(BIN), $(OBJS))
 	@touch .built
 
-.context:
 ifeq ($(CONFIG_EXAMPLES_NX_BUILTIN),y)
+$(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat: $(TOPDIR)$(DELIM).config Makefile
 	$(call REGISTER,$(APPNAME),$(PRIORITY),$(STACKSIZE),$(APPNAME)_main)
-	@touch $@
-endif
 
-context: .context
+context: $(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat
+else
+context:
+endif
 
 .depend: Makefile $(SRCS)
 	@$(MKDEP) $(ROOTDEPPATH) "$(CC)" -- $(CFLAGS) -- $(SRCS) >Make.dep
diff --git a/apps/examples/nxhello/Makefile b/apps/examples/nxhello/Makefile
index b1ac6f116f..52ced123d5 100644
--- a/apps/examples/nxhello/Makefile
+++ b/apps/examples/nxhello/Makefile
@@ -83,13 +83,14 @@ $(COBJS): %$(OBJEXT): %.c
 	$(call ARCHIVE, $(BIN), $(OBJS))
 	@touch .built
 
-.context:
 ifeq ($(CONFIG_EXAMPLES_NXHELLO_BUILTIN),y)
+$(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat: $(TOPDIR)$(DELIM).config Makefile
 	$(call REGISTER,$(APPNAME),$(PRIORITY),$(STACKSIZE),$(APPNAME)_main)
-	@touch $@
-endif
 
-context: .context
+context: $(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat
+else
+context:
+endif
 
 .depend: Makefile $(SRCS)
 	@$(MKDEP) $(ROOTDEPPATH) "$(CC)" -- $(CFLAGS) -- $(SRCS) >Make.dep
diff --git a/apps/examples/nximage/Makefile b/apps/examples/nximage/Makefile
index e2e9201e74..98f04c2d53 100644
--- a/apps/examples/nximage/Makefile
+++ b/apps/examples/nximage/Makefile
@@ -83,13 +83,14 @@ $(COBJS): %$(OBJEXT): %.c
 	$(call ARCHIVE, $(BIN), $(OBJS))
 	@touch .built
 
-.context:
 ifeq ($(CONFIG_EXAMPLES_NXIMAGE_BUILTIN),y)
+$(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat: $(TOPDIR)$(DELIM).config Makefile
 	$(call REGISTER,$(APPNAME),$(PRIORITY),$(STACKSIZE),$(APPNAME)_main)
-	@touch $@
-endif
 
-context: .context
+context: $(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat
+else
+context:
+endif
 
 .depend: Makefile $(SRCS)
 	@$(MKDEP) $(ROOTDEPPATH) "$(CC)" -- $(CFLAGS) -- $(SRCS) >Make.dep
diff --git a/apps/examples/nxlines/Makefile b/apps/examples/nxlines/Makefile
index cdda7ad8cd..9673a5520d 100644
--- a/apps/examples/nxlines/Makefile
+++ b/apps/examples/nxlines/Makefile
@@ -83,13 +83,14 @@ $(COBJS): %$(OBJEXT): %.c
 	$(call ARCHIVE, $(BIN), $(OBJS))
 	@touch .built
 
-.context:
 ifeq ($(CONFIG_NSH_BUILTIN_APPS),y)
+$(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat: $(TOPDIR)$(DELIM).config Makefile
 	$(call REGISTER,$(APPNAME),$(PRIORITY),$(STACKSIZE),$(APPNAME)_main)
-	@touch $@
-endif
 
-context: .context
+context: $(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat
+else
+context:
+endif
 
 .depend: Makefile $(SRCS)
 	@$(MKDEP) $(ROOTDEPPATH) "$(CC)" -- $(CFLAGS) -- $(SRCS) >Make.dep
diff --git a/apps/examples/nxtext/Makefile b/apps/examples/nxtext/Makefile
index dffe66ba1f..738209754f 100644
--- a/apps/examples/nxtext/Makefile
+++ b/apps/examples/nxtext/Makefile
@@ -87,13 +87,14 @@ $(COBJS): %$(OBJEXT): %.c
 	$(call ARCHIVE, $(BIN), $(OBJS))
 	@touch .built
 
-.context:
 ifeq ($(CONFIG_EXAMPLES_NXTEXT_BUILTIN),y)
+$(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat: $(TOPDIR)$(DELIM).config Makefile
 	$(call REGISTER,$(APPNAME),$(PRIORITY),$(STACKSIZE),$(APPNAME)_main)
-	@touch $@
-endif
 
-context: .context
+context: $(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat
+else
+context:
+endif
 
 .depend: Makefile $(SRCS)
 	@$(MKDEP) $(ROOTDEPPATH) "$(CC)" -- $(CFLAGS) -- $(SRCS) >Make.dep
diff --git a/apps/examples/ostest/Makefile b/apps/examples/ostest/Makefile
index 3e78c64e83..dfb500387a 100644
--- a/apps/examples/ostest/Makefile
+++ b/apps/examples/ostest/Makefile
@@ -127,13 +127,14 @@ $(COBJS): %$(OBJEXT): %.c
 	$(call ARCHIVE, $(BIN), $(OBJS))
 	@touch .built
 
-.context:
 ifeq ($(CONFIG_EXAMPLES_OSTEST_BUILTIN),y)
+$(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat: $(TOPDIR)$(DELIM).config Makefile
 	$(call REGISTER,$(APPNAME),$(PRIORITY),$(STACKSIZE),$(APPNAME)_main)
-	@touch $@
-endif
 
-context: .context
+context: $(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat
+else
+context:
+endif
 
 .depend: Makefile $(SRCS)
 	@$(MKDEP) $(ROOTDEPPATH) "$(CC)" -- $(CFLAGS) -- $(SRCS) >Make.dep
diff --git a/apps/examples/pwm/Makefile b/apps/examples/pwm/Makefile
index 3a6f2520a0..d33d1c2775 100644
--- a/apps/examples/pwm/Makefile
+++ b/apps/examples/pwm/Makefile
@@ -83,11 +83,14 @@ $(COBJS): %$(OBJEXT): %.c
 	$(call ARCHIVE, $(BIN), $(OBJS))
 	@touch .built
 
-.context:
+ifeq ($(CONFIG_NSH_BUILTIN_APPS),y)
+$(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat: $(TOPDIR)$(DELIM).config Makefile
 	$(call REGISTER,$(APPNAME),$(PRIORITY),$(STACKSIZE),$(APPNAME)_main)
-	@touch $@
 
-context: .context
+context: $(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat
+else
+context:
+endif
 
 .depend: Makefile $(SRCS)
 	@$(MKDEP) $(ROOTDEPPATH) "$(CC)" -- $(CFLAGS) -- $(SRCS) >Make.dep
diff --git a/apps/examples/qencoder/Makefile b/apps/examples/qencoder/Makefile
index 7d2427c6bf..1caff2ed30 100644
--- a/apps/examples/qencoder/Makefile
+++ b/apps/examples/qencoder/Makefile
@@ -83,13 +83,14 @@ $(COBJS): %$(OBJEXT): %.c
 	$(call ARCHIVE, $(BIN), $(OBJS))
 	@touch .built
 
-.context:
 ifeq ($(CONFIG_NSH_BUILTIN_APPS),y)
+$(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat: $(TOPDIR)$(DELIM).config Makefile
 	$(call REGISTER,$(APPNAME),$(PRIORITY),$(STACKSIZE),$(APPNAME)_main)
-	@touch $@
-endif
 
-context: .context
+context: $(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat
+else
+context:
+endif
 
 .depend: Makefile $(SRCS)
 	@$(MKDEP) $(ROOTDEPPATH) "$(CC)" -- $(CFLAGS) -- $(SRCS) >Make.dep
diff --git a/apps/examples/relays/Makefile b/apps/examples/relays/Makefile
index 8e91ab5723..17bf7a6a4b 100644
--- a/apps/examples/relays/Makefile
+++ b/apps/examples/relays/Makefile
@@ -83,13 +83,14 @@ $(COBJS): %$(OBJEXT): %.c
 	$(call ARCHIVE, $(BIN), $(OBJS))
 	@touch .built
 
-.context:
 ifeq ($(CONFIG_NSH_BUILTIN_APPS),y)
+$(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat: $(TOPDIR)$(DELIM).config Makefile
 	$(call REGISTER,$(APPNAME),$(PRIORITY),$(STACKSIZE),$(APPNAME)_main)
-	@touch $@
-endif
 
-context: .context
+context: $(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat
+else
+context:
+endif
 
 .depend: Makefile $(SRCS)
 	@$(MKDEP) $(ROOTDEPPATH) "$(CC)" -- $(CFLAGS) -- $(SRCS) >Make.dep
diff --git a/apps/examples/telnetd/Makefile b/apps/examples/telnetd/Makefile
index 8f5e5b6d2f..63876baa03 100644
--- a/apps/examples/telnetd/Makefile
+++ b/apps/examples/telnetd/Makefile
@@ -83,13 +83,14 @@ $(COBJS): %$(OBJEXT): %.c
 	$(call ARCHIVE, $(BIN), $(OBJS))
 	@touch .built
 
-.context:
 ifeq ($(CONFIG_NSH_BUILTIN_APPS),y)
+$(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat: $(TOPDIR)$(DELIM).config Makefile
 	$(call REGISTER,$(APPNAME),$(PRIORITY),$(STACKSIZE),$(APPNAME)_main)
-	@touch $@
-endif
 
-context: .context
+context: $(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat
+else
+context:
+endif
 
 .depend: Makefile $(SRCS)
 	@$(MKDEP) $(ROOTDEPPATH) "$(CC)" -- $(CFLAGS) -- $(SRCS) >Make.dep
diff --git a/apps/examples/tiff/Makefile b/apps/examples/tiff/Makefile
index f62209931a..853e904a73 100644
--- a/apps/examples/tiff/Makefile
+++ b/apps/examples/tiff/Makefile
@@ -83,13 +83,14 @@ $(COBJS): %$(OBJEXT): %.c
 	$(call ARCHIVE, $(BIN), $(OBJS))
 	@touch .built
 
-.context:
 ifeq ($(CONFIG_EXAMPLES_TIFF_BUILTIN),y)
+$(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat: $(TOPDIR)$(DELIM).config Makefile
 	$(call REGISTER,$(APPNAME),$(PRIORITY),$(STACKSIZE),$(APPNAME)_main)
-	@touch $@
-endif
 
-context: .context
+context: $(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat
+else
+context:
+endif
 
 .depend: Makefile $(SRCS)
 	@$(MKDEP) $(ROOTDEPPATH) "$(CC)" -- $(CFLAGS) -- $(SRCS) >Make.dep
diff --git a/apps/examples/touchscreen/Makefile b/apps/examples/touchscreen/Makefile
index b3943951ef..8761cc5b50 100644
--- a/apps/examples/touchscreen/Makefile
+++ b/apps/examples/touchscreen/Makefile
@@ -83,13 +83,14 @@ $(COBJS): %$(OBJEXT): %.c
 	$(call ARCHIVE, $(BIN), $(OBJS))
 	@touch .built
 
-.context:
 ifeq ($(CONFIG_EXAMPLES_TOUCHSCREEN_BUILTIN),y)
+$(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat: $(TOPDIR)$(DELIM).config Makefile
 	$(call REGISTER,$(APPNAME),$(PRIORITY),$(STACKSIZE),$(APPNAME)_main)
-	@touch $@
-endif
 
-context: .context
+context: $(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat
+else
+context:
+endif
 
 .depend: Makefile $(SRCS)
 	@$(MKDEP) $(ROOTDEPPATH) "$(CC)" -- $(CFLAGS) -- $(SRCS) >Make.dep
diff --git a/apps/examples/usbstorage/Makefile b/apps/examples/usbstorage/Makefile
index 5492e47dc4..a1eb77836e 100644
--- a/apps/examples/usbstorage/Makefile
+++ b/apps/examples/usbstorage/Makefile
@@ -87,14 +87,17 @@ $(COBJS): %$(OBJEXT): %.c
 	$(call ARCHIVE, $(BIN), $(OBJS))
 	@touch .built
 
-.context:
 ifeq ($(CONFIG_EXAMPLES_USBMSC_BUILTIN),y)
+$(BUILTIN_REGISTRY)$(DELIM)$(APPNAME1)_main.bdat: $(TOPDIR)$(DELIM).config Makefile
 	$(call REGISTER,$(APPNAME1),$(PRIORITY1),$(STACKSIZE1),$(APPNAME1)_main)
+
+$(BUILTIN_REGISTRY)$(DELIM)$(APPNAME2)_main.bdat: $(TOPDIR)$(DELIM).config Makefile
 	$(call REGISTER,$(APPNAME2),$(PRIORITY2),$(STACKSIZE2),$(APPNAME2)_main)
-	@touch $@
-endif
 
-context: .context
+context: $(BUILTIN_REGISTRY)$(DELIM)$(APPNAME1)_main.bdat $(BUILTIN_REGISTRY)$(DELIM)$(APPNAME2)_main.bdat
+else
+context:
+endif
 
 .depend: Makefile $(SRCS)
 	@$(MKDEP) $(ROOTDEPPATH) "$(CC)" -- $(CFLAGS) -- $(SRCS) >Make.dep
diff --git a/apps/examples/usbterm/Makefile b/apps/examples/usbterm/Makefile
index c5fb95331e..3b3ca6cd7f 100644
--- a/apps/examples/usbterm/Makefile
+++ b/apps/examples/usbterm/Makefile
@@ -83,13 +83,14 @@ $(COBJS): %$(OBJEXT): %.c
 	$(call ARCHIVE, $(BIN), $(OBJS))
 	@touch .built
 
-.context:
 ifeq ($(CONFIG_EXAMPLES_USBTERM_BUILTIN),y)
+$(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat: $(TOPDIR)$(DELIM).config Makefile
 	$(call REGISTER,$(APPNAME),$(PRIORITY),$(STACKSIZE),$(APPNAME)_main)
-	@touch $@
-endif
 
-context: .context
+context: $(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat
+else
+context:
+endif
 
 .depend: Makefile $(SRCS)
 	@$(MKDEP) $(ROOTDEPPATH) "$(CC)" -- $(CFLAGS) -- $(SRCS) >Make.dep
diff --git a/apps/examples/watchdog/Makefile b/apps/examples/watchdog/Makefile
index 9890959fb5..cf947b0119 100644
--- a/apps/examples/watchdog/Makefile
+++ b/apps/examples/watchdog/Makefile
@@ -83,11 +83,14 @@ $(COBJS): %$(OBJEXT): %.c
 	$(call ARCHIVE, $(BIN), $(OBJS))
 	@touch .built
 
-.context:
+ifeq ($(CONFIG_NSH_BUILTIN_APPS),y)
+$(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat: $(TOPDIR)$(DELIM).config Makefile
 	$(call REGISTER,$(APPNAME),$(PRIORITY),$(STACKSIZE),$(APPNAME)_main)
-	@touch $@
 
-context: .context
+context: $(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat
+else
+context:
+endif
 
 .depend: Makefile $(SRCS)
 	@$(MKDEP) $(ROOTDEPPATH) "$(CC)" -- $(CFLAGS) -- $(SRCS) >Make.dep
diff --git a/apps/examples/wgetjson/Makefile b/apps/examples/wgetjson/Makefile
index fa8f302c68..38bd8ac04f 100644
--- a/apps/examples/wgetjson/Makefile
+++ b/apps/examples/wgetjson/Makefile
@@ -83,13 +83,14 @@ $(COBJS): %$(OBJEXT): %.c
 	$(call ARCHIVE, $(BIN), $(OBJS))
 	@touch .built
 
-.context:
 ifeq ($(CONFIG_NSH_BUILTIN_APPS),y)
+$(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat: $(TOPDIR)$(DELIM).config Makefile
 	$(call REGISTER,$(APPNAME),$(PRIORITY),$(STACKSIZE),$(APPNAME)_main)
-	@touch $@
-endif
 
-context: .context
+context: $(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat
+else
+context:
+endif
 
 .depend: Makefile $(SRCS)
 	@$(MKDEP) $(ROOTDEPPATH) "$(CC)" -- $(CFLAGS) -- $(SRCS) >Make.dep
diff --git a/apps/examples/xmlrpc/Makefile b/apps/examples/xmlrpc/Makefile
index 7053f54d38..4756bfabbb 100644
--- a/apps/examples/xmlrpc/Makefile
+++ b/apps/examples/xmlrpc/Makefile
@@ -84,13 +84,14 @@ $(COBJS): %$(OBJEXT): %.c
 	$(call ARCHIVE, $(BIN), $(OBJS))
 	@touch .built
 
-.context:
 ifeq ($(CONFIG_NSH_BUILTIN_APPS),y)
+$(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat: $(TOPDIR)$(DELIM).config Makefile
 	$(call REGISTER,$(APPNAME),$(PRIORITY),$(STACKSIZE),$(APPNAME)_main)
-	@touch $@
-endif
 
-context: .context
+context: $(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat
+else
+context:
+endif
 
 .depend: Makefile $(SRCS)
 	@$(MKDEP) $(ROOTDEPPATH) "$(CC)" -- $(CFLAGS) -- $(SRCS) >Make.dep
diff --git a/apps/graphics/tiff/Makefile b/apps/graphics/tiff/Makefile
index e42091ad94..b5f6c5b73b 100644
--- a/apps/graphics/tiff/Makefile
+++ b/apps/graphics/tiff/Makefile
@@ -90,7 +90,6 @@ clean:
 	$(call CLEAN)
 
 distclean: clean
-	$(call DELFILE, .context)
 	$(call DELFILE, Make.dep)
 	$(call DELFILE, .depend)
 
diff --git a/apps/interpreters/ficl/Makefile b/apps/interpreters/ficl/Makefile
index 990630fb89..3b2dc7ab9b 100644
--- a/apps/interpreters/ficl/Makefile
+++ b/apps/interpreters/ficl/Makefile
@@ -108,7 +108,6 @@ context:
 depend: .depend
 
 clean:
-	$(call DELFILE, .context)
 	$(call DELFILE, .built)
 	$(call CLEAN)
 
diff --git a/apps/modbus/Makefile b/apps/modbus/Makefile
index d2b1481628..27548f3d61 100644
--- a/apps/modbus/Makefile
+++ b/apps/modbus/Makefile
@@ -111,7 +111,6 @@ clean:
 	$(call CLEAN)
 
 distclean: clean
-	$(call DELFILE, .context)
 	$(call DELFILE, Make.dep)
 	$(call DELFILE, .depend)
 
diff --git a/apps/nshlib/Makefile b/apps/nshlib/Makefile
index 73325e899d..7ddbb67bf3 100644
--- a/apps/nshlib/Makefile
+++ b/apps/nshlib/Makefile
@@ -130,7 +130,6 @@ clean:
 	$(call CLEAN)
 
 distclean: clean
-	$(call DELFILE, .context)
 	$(call DELFILE, Make.dep)
 	$(call DELFILE, .depend)
 
diff --git a/apps/system/free/Makefile b/apps/system/free/Makefile
index dada00d992..4f6424f50d 100644
--- a/apps/system/free/Makefile
+++ b/apps/system/free/Makefile
@@ -92,11 +92,14 @@ $(COBJS): %$(OBJEXT): %.c
 
 # Register application
 
-.context:
+ifeq ($(CONFIG_NSH_BUILTIN_APPS),y)
+$(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat: $(TOPDIR)$(DELIM).config Makefile
 	$(call REGISTER,$(APPNAME),$(PRIORITY),$(STACKSIZE),$(APPNAME)_main)
-	$(Q) touch $@
 
-context: .context
+context: $(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat
+else
+context:
+endif
 
 # Create dependencies
 
@@ -111,7 +114,6 @@ clean:
 	$(call CLEAN)
 
 distclean: clean
-	$(call DELFILE, .context)
 	$(call DELFILE, Make.dep)
 	$(call DELFILE, .depend)
 
diff --git a/apps/system/i2c/Makefile b/apps/system/i2c/Makefile
index 029d2b6fe4..7f42801a9f 100644
--- a/apps/system/i2c/Makefile
+++ b/apps/system/i2c/Makefile
@@ -68,7 +68,7 @@ STACKSIZE	= 2048
 # Build targets
 
 all:	.built
-.PHONY: .context context .depend depend clean distclean
+.PHONY: context .depend depend clean distclean
 
 $(AOBJS): %$(OBJEXT): %.S
 	$(call ASSEMBLE, $<, $@)
@@ -80,11 +80,14 @@ $(COBJS): %$(OBJEXT): %.c
 	$(call ARCHIVE, $(BIN), $(OBJS))
 	$(Q) touch .built
 
-.context:
+ifeq ($(CONFIG_NSH_BUILTIN_APPS),y)
+$(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat: $(TOPDIR)$(DELIM).config Makefile
 	$(call REGISTER,$(APPNAME),$(PRIORITY),$(STACKSIZE),$(APPNAME)_main)
-	$(Q) touch $@
 
-context: .context
+context: $(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat
+else
+context:
+endif
 
 .depend: Makefile $(SRCS)
 	$(Q) $(MKDEP) $(ROOTDEPPATH) "$(CC)" -- $(CFLAGS) -- $(SRCS) >Make.dep
@@ -97,7 +100,6 @@ clean:
 	$(call CLEAN)
 
 distclean: clean
-	$(call DELFILE, .context)
 	$(call DELFILE, Make.dep)
 	$(call DELFILE, .depend)
 
diff --git a/apps/system/install/Makefile b/apps/system/install/Makefile
index 6a02d859ff..aa65e60edd 100644
--- a/apps/system/install/Makefile
+++ b/apps/system/install/Makefile
@@ -93,11 +93,14 @@ $(COBJS): %$(OBJEXT): %.c
 
 # Register application
 
-.context:
+ifeq ($(CONFIG_NSH_BUILTIN_APPS),y)
+$(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat: $(TOPDIR)$(DELIM).config Makefile
 	$(call REGISTER,$(APPNAME),$(PRIORITY),$(STACKSIZE),$(APPNAME)_main)
-	$(Q) touch $@
 
-context: .context
+context: $(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat
+else
+context:
+endif
 
 # Create dependencies
 
@@ -112,7 +115,6 @@ clean:
 	$(call CLEAN)
 
 distclean: clean
-	$(call DELFILE, .context)
 	$(call DELFILE, Make.dep)
 	$(call DELFILE, .depend)
 
diff --git a/apps/system/poweroff/Makefile b/apps/system/poweroff/Makefile
index bbceccb9e9..0067a13abe 100644
--- a/apps/system/poweroff/Makefile
+++ b/apps/system/poweroff/Makefile
@@ -93,11 +93,14 @@ $(COBJS): %$(OBJEXT): %.c
 
 # Register application
 
-.context:
+ifeq ($(CONFIG_NSH_BUILTIN_APPS),y)
+$(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat: $(TOPDIR)$(DELIM).config Makefile
 	$(call REGISTER,$(APPNAME),$(PRIORITY),$(STACKSIZE),$(APPNAME)_main)
-	$(Q) touch $@
 
-context: .context
+context: $(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat
+else
+context:
+endif
 
 # Create dependencies
 
@@ -112,7 +115,6 @@ clean:
 	$(call CLEAN)
 
 distclean: clean
-	$(call DELFILE, .context)
 	$(call DELFILE, Make.dep)
 	$(call DELFILE, .depend)
 
diff --git a/apps/system/ramtron/Makefile b/apps/system/ramtron/Makefile
index 9f5af1659b..1c92398f32 100644
--- a/apps/system/ramtron/Makefile
+++ b/apps/system/ramtron/Makefile
@@ -93,11 +93,14 @@ $(COBJS): %$(OBJEXT): %.c
 
 # Register application
 
-.context:
+ifeq ($(CONFIG_NSH_BUILTIN_APPS),y)
+$(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat: $(TOPDIR)$(DELIM).config Makefile
 	$(call REGISTER,$(APPNAME),$(PRIORITY),$(STACKSIZE),$(APPNAME)_main)
-	$(Q) touch $@
 
-context: .context
+context: $(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat
+else
+context:
+endif
 
 # Create dependencies
 
@@ -112,7 +115,6 @@ clean:
 	$(call CLEAN)
 
 distclean: clean
-	$(call DELFILE, .context)
 	$(call DELFILE, Make.dep)
 	$(call DELFILE, .depend)
 
diff --git a/apps/system/readline/Makefile b/apps/system/readline/Makefile
index 3a48d324e7..040fd2e28f 100644
--- a/apps/system/readline/Makefile
+++ b/apps/system/readline/Makefile
@@ -100,7 +100,6 @@ clean:
 	$(call CLEAN)
 
 distclean: clean
-	$(call DELFILE, .context)
 	$(call DELFILE, Make.dep)
 	$(call DELFILE, .depend)
 
diff --git a/apps/system/sdcard/Makefile b/apps/system/sdcard/Makefile
index 6d5d129608..6c580ba868 100644
--- a/apps/system/sdcard/Makefile
+++ b/apps/system/sdcard/Makefile
@@ -93,11 +93,14 @@ $(COBJS): %$(OBJEXT): %.c
 
 # Register application
 
-.context:
+ifeq ($(CONFIG_NSH_BUILTIN_APPS),y)
+$(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat: $(TOPDIR)$(DELIM).config Makefile
 	$(call REGISTER,$(APPNAME),$(PRIORITY),$(STACKSIZE),$(APPNAME)_main)
-	$(Q) touch $@
 
-context: .context
+context: $(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat
+else
+context:
+endif
 
 # Create dependencies
 
@@ -112,7 +115,6 @@ clean:
 	$(call CLEAN)
 
 distclean: clean
-	$(call DELFILE, .context)
 	$(call DELFILE, Make.dep)
 	$(call DELFILE, .depend)
 
diff --git a/apps/system/sysinfo/Makefile b/apps/system/sysinfo/Makefile
index fa6aebf711..d233aa3d80 100644
--- a/apps/system/sysinfo/Makefile
+++ b/apps/system/sysinfo/Makefile
@@ -93,11 +93,14 @@ $(COBJS): %$(OBJEXT): %.c
 
 # Register application
 
-.context:
+ifeq ($(CONFIG_NSH_BUILTIN_APPS),y)
+$(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat: $(TOPDIR)$(DELIM).config Makefile
 	$(call REGISTER,$(APPNAME),$(PRIORITY),$(STACKSIZE),$(APPNAME)_main)
-	$(Q) touch $@
 
-context: .context
+context: $(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat
+else
+context:
+endif
 
 # Create dependencies
 
@@ -112,7 +115,6 @@ clean:
 	$(call CLEAN)
 
 distclean: clean
-	$(call DELFILE, .context)
 	$(call DELFILE, Make.dep)
 	$(call DELFILE, .depend)
 
diff --git a/nuttx/Documentation/NuttShell.html b/nuttx/Documentation/NuttShell.html
index cc3f078ddf..7ad96da79b 100644
--- a/nuttx/Documentation/NuttShell.html
+++ b/nuttx/Documentation/NuttShell.html
@@ -3349,11 +3349,7 @@ int hello_main(int argc, char *argv[])
     </p>
   <li>
     <p>
-      And finally, the <code>apps/examples/Makefile</code>will execute the <i>context</i> target in all configured <code>example</code>sub-directores, getting us finally to <code>apps/examples/Makefile</code> (which is covered below).</p>
-  <li>
-    <p>
-      At the conclusion of the <i>context</i> phase, the <code> apps/Makefile</code> will touch a file called <code>.context</code> in the <code>apps/</code> directory, preventing any further configurations during any subsequent <i>context</i> phase build attempts.
-    </p>
+      And finally, the <code>apps/examples/Makefile</code> will execute the <i>context</i> target in all configured <code>example</code>sub-directores, getting us finally to <code>apps/examples/Makefile</code> which is covered below.</p>
 </ol>
 
 <p>
@@ -3417,9 +3413,8 @@ STACKSIZE       = 2048
       When the <code>hello</code> command is executed, it will start the task with entry point <code>hello_main()</code> with the default priority and with a stack size of 2K.
    </p>
 <ul><pre>
-.context:
+context:
   $(call REGISTER,$(APPNAME),$(PRIORITY),$(STACKSIZE),$(APPNAME)_main)
-  @touch $@
 </pre></ul>
 </ol>
 
diff --git a/nuttx/configs/vsn/src/Makefile b/nuttx/configs/vsn/src/Makefile
index a71c80c8ab..b0eba0a20b 100644
--- a/nuttx/configs/vsn/src/Makefile
+++ b/nuttx/configs/vsn/src/Makefile
@@ -85,11 +85,14 @@ libboard$(LIBEXT): $(OBJS)
 
 # Register application
 
-.context:
+ifeq ($(CONFIG_NSH_BUILTIN_APPS),y)
+$(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat: $(TOPDIR)$(DELIM).config Makefile
 	$(call REGISTER,$(APPNAME),$(PRIORITY),$(STACKSIZE),$(APPNAME)_main)
-	$(Q) touch $@
 
-context: .context
+context: $(BUILTIN_REGISTRY)$(DELIM)$(APPNAME)_main.bdat
+else
+context:
+endif
 
 # Create dependencies