configure: Added 'host' make target.

Builds only the current host architecture, so this is
equivalent to the target install.$EPISC_HOST_ARCH

configure/RULES.Db

@@ -137,6 +137,12 @@ cleanArchTargets = $(foreach arch,$(BUILD_ARCHS), clean$(DIVIDER)$(arch))
 -include $(TOP)/configure/CONFIG_APP_INCLUDE
 
 all: install
+ifeq ($(EPICS_HOST_ARCH),$T_A)
+host: install
+else
+# Do nothing
+host:
+endif
 
 install: buildInstall
 
@@ -144,7 +150,7 @@ buildInstall : build
 
 rebuild: clean install
 
-.PHONY: all $(ACTIONS)
+.PHONY: all host $(ACTIONS)
 
 $(actionArchTargets) $(BUILD_ARCHS): install
 $(cleanArchTargets): clean

configure/RULES_ARCHS

@@ -11,6 +11,7 @@
 #
 
 all: install
+host: install$(DIVIDER)$(EPICS_HOST_ARCH)
 
 ACTIONS = inc
 ACTIONS += build
@@ -94,4 +95,4 @@ realclean :
 .PHONY : $(actionArchTargets)
 .PHONY : $(cleanArchTargets)
 .PHONY : $(BUILD_ARCHS) rebuild arch_common_clean
-.PHONY : $(ACTIONS) clean realclean archclean all
+.PHONY : $(ACTIONS) clean realclean archclean host all

configure/RULES_BUILD

@@ -71,7 +71,13 @@ endif
 #---------------------------------------------------------------
 #	First target
 
-all:	install
+all: install
+ifeq ($(EPICS_HOST_ARCH),$T_A)
+host: install
+else
+# Do nothing
+host:
+endif
 
 -include $(CONFIG)/RULES.Db
 
@@ -478,7 +484,7 @@ $(INSTALL_TEMPLATES_SUBDIR)/%: %
 .PRECIOUS: %.i %.o %.c %.nm %.cpp %.cc
 .PRECIOUS: $(COMMON_INC)
 
-.PHONY: all inc build install clean rebuild buildInstall build_clean
+.PHONY: all host inc build install clean rebuild buildInstall build_clean
 .PHONY: runtests tapfiles checkRelease warnRelease noCheckRelease
 
 endif # BASE_RULES_BUILD

configure/RULES_DIRS

@@ -34,7 +34,8 @@ actionArchTargets = $(foreach action, $(ACTIONS),\
                     $(foreach arch, $(ARCHS), \
                     $(action)$(DIVIDER)$(arch)))
 
-all : install
+all: install
+host: install$(DIVIDER)$(EPICS_HOST_ARCH)
 
 # Allows rebuild to work with parallel builds option, -j.
 ifeq (rebuild,$(filter rebuild,$(MAKECMDGOALS)))
@@ -73,7 +74,7 @@ $(DIRS) $(dirActionTargets) $(dirArchTargets) $(dirActionArchTargets) :
 $(ARCHS) $(ACTIONS) $(actionArchTargets) :%: \
 	$(foreach dir, $(DIRS), $(dir)$(DIVIDER)%)
 
-.PHONY : $(DIRS) all rebuild
+.PHONY : $(DIRS) all host rebuild
 .PHONY : $(ARCHS) $(ACTIONS)
 .PHONY : $(dirActionTargets) $(dirArchTargets)
 .PHONY : $(dirActionArchTargets)

configure/RULES_TOP

@@ -63,6 +63,7 @@ help:
 	@echo "     rebuild        - Same as clean install"
 	@echo "     archclean      - Removes O.<arch> dirs but not O.Common dir"
 	@echo "\"Partial\" build targets supported by Makefiles:"
+	@echo "     host           - Builds and installs $(EPICS_HOST_ARCH) only."
 	@echo "     inc$(DIVIDER)<arch>     - Installs <arch> only header files."
 	@echo "     build$(DIVIDER)<arch>   - Builds and installs <arch> only."
 	@echo "     install$(DIVIDER)<arch> - Builds and installs <arch> only."