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# only invoke uname and compute the output top-level dir once
ifndef X_ALREADYLOADED
.PHONY: all
all::
ifndef X_SYSTEM
X_SYSTEM := $(shell uname -s)
endif
ifndef X_ARCH
X_ARCH := $(shell uname -m)
endif
#ifndef X_CPUS
# X_CPUS := $(shell (ls -d /sys/devices/system/cpu/cpu* 2>/dev/null || grep '^processor[[:blank:]]:' /proc/cpuinfo) | wc -l)
# ifeq ($(findstring -j,$(MAKEFLAGS)),)
# #MAKEFLAGS += -j $(X_CPUS)
# endif
#endif
X_OUTTOP ?= .
ifndef X_OUTARCH
X_OUTARCH := $(X_OUTTOP)/$(X_SYSTEM)-$(X_ARCH)
endif
endif # X_ALREADYLOADED
# makefiles and module name we are in
X_MAKEFILES := $(filter-out %$.make,$(MAKEFILE_LIST))
X_MODULE := $(patsubst %/,%,$(dir $(word $(words $(X_MAKEFILES)),$(X_MAKEFILES))))
# per module output dir
$(X_MODULE)_OUTPUT := $(X_OUTARCH)/$(X_MODULE)
# create that module output dir
X_IGNORE := $(shell mkdir -p $($(X_MODULE)_OUTPUT))
# initialize
SRCS :=
NOT_SRCS :=
# the global clean target just once
ifndef X_ALREADYLOADED
X_ALREADYLOADED = 1
.PHONY: clean
clean::
$(Q)rm -rf $(X_OUTARCH)
.SUFFIXES:
endif
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