## UB build support
##
## PROCEDURE:
##
##  1. Perform a build (let us call it arch-X).
##  2. cd into arch-X's build/ driectory.
##  3. Launch builds of the remaining architectures.
##     We compute $(UB.archs.other) to be the remaining archs to build.
##     The entire list is defined $(UB.archs) .
##  4. Combine other architectures into arch-X's binaries.
##
## EXAMPLE: serial method, archs: i386,x86_64,ppc,ppc64
##
##  ./configure --launch
##  cd build/
##  make ub.build.serial
##  make ub.combine
##
## EXAMPLE: parallel method, archs: i386,x86_64,ppc,ppc64
##
##  ./configure --launch
##  cd build/
##  make ub.build.parallel
##  make ub.combine
##
## EXAMPLE: serial, archs: i386,x86_64 (assuming i386 is native)
##
##  ./configure --launch
##  cd build/
##  make ub.build.parallel UB.archs="i386 x86_64"
##  make ub.combine UB.archs="i386 x86_64"
##
UB.archs       = i386 x86_64 ppc ppc64
UB.archs.other = $(filter-out $(BUILD.arch),$(UB.archs))
UB.builds      = $(wildcard $(foreach n,$(UB.archs.other),$(PROJECT/)build.$n))

UB.BUILD = $(PROJECT/)configure --launch --launch-dir=ub.$(1) --arch=$(1)

## linefeed is important
define UB.BUILD.item
	$(call UB.BUILD,$(1))

endef

define UB.BUILD.SERIAL
	$(foreach n,$(UB.archs.other),$(call UB.BUILD.item,$n))
endef

define UB.BUILD.PARALLEL
	$(call UB.BUILD,$(1)) 2>&1 > ub.$(1).log
endef

define UB.COMBINE
	$(RM.exe) -fr ub.combine
	$(MKDIR.exe) -p ub.combine
	$(CP.exe) -R HandBrake.app ub.combine/.
	lipo $(1) $(foreach n,$(UB.archs.other),ub.$n/$(1)) -create -output ub.combine/$(1)
	@echo ""
	@sync; lipo -info ub.combine/$(1)
	@du -sh ub.combine/$(1)
endef