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4a6a6f5c4a
make TARGETS=gpio kselftest fails with: Makefile:23: tools/build/Makefile.include: No such file or directory When the gpio tool make is invoked from tools Makefile, srctree is cleared and the current logic check for srctree equals to empty string to determine srctree location from CURDIR. When the build in invoked from selftests/gpio Makefile, the srctree is set to "." and the same logic used for srctree equals to empty is needed to determine srctree. Check building_out_of_srctree undefined as the condition for both cases to fix "make TARGETS=gpio kselftest" build failure. Cc: stable@vger.kernel.org Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
79 lines
2.0 KiB
Makefile
79 lines
2.0 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0
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include ../scripts/Makefile.include
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bindir ?= /usr/bin
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# This will work when gpio is built in tools env. where srctree
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# isn't set and when invoked from selftests build, where srctree
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# is set to ".". building_out_of_srctree is undefined for in srctree
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# builds
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ifndef building_out_of_srctree
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srctree := $(patsubst %/,%,$(dir $(CURDIR)))
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srctree := $(patsubst %/,%,$(dir $(srctree)))
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endif
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# Do not use make's built-in rules
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# (this improves performance and avoids hard-to-debug behaviour);
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MAKEFLAGS += -r
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override CFLAGS += -O2 -Wall -g -D_GNU_SOURCE -I$(OUTPUT)include
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ALL_TARGETS := lsgpio gpio-hammer gpio-event-mon
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ALL_PROGRAMS := $(patsubst %,$(OUTPUT)%,$(ALL_TARGETS))
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all: $(ALL_PROGRAMS)
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export srctree OUTPUT CC LD CFLAGS
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include $(srctree)/tools/build/Makefile.include
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#
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# We need the following to be outside of kernel tree
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#
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$(OUTPUT)include/linux/gpio.h: ../../include/uapi/linux/gpio.h
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mkdir -p $(OUTPUT)include/linux 2>&1 || true
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ln -sf $(CURDIR)/../../include/uapi/linux/gpio.h $@
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prepare: $(OUTPUT)include/linux/gpio.h
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#
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# lsgpio
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#
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LSGPIO_IN := $(OUTPUT)lsgpio-in.o
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$(LSGPIO_IN): prepare FORCE
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$(Q)$(MAKE) $(build)=lsgpio
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$(OUTPUT)lsgpio: $(LSGPIO_IN)
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$(QUIET_LINK)$(CC) $(CFLAGS) $(LDFLAGS) $< -o $@
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#
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# gpio-hammer
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#
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GPIO_HAMMER_IN := $(OUTPUT)gpio-hammer-in.o
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$(GPIO_HAMMER_IN): prepare FORCE
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$(Q)$(MAKE) $(build)=gpio-hammer
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$(OUTPUT)gpio-hammer: $(GPIO_HAMMER_IN)
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$(QUIET_LINK)$(CC) $(CFLAGS) $(LDFLAGS) $< -o $@
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#
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# gpio-event-mon
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#
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GPIO_EVENT_MON_IN := $(OUTPUT)gpio-event-mon-in.o
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$(GPIO_EVENT_MON_IN): prepare FORCE
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$(Q)$(MAKE) $(build)=gpio-event-mon
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$(OUTPUT)gpio-event-mon: $(GPIO_EVENT_MON_IN)
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$(QUIET_LINK)$(CC) $(CFLAGS) $(LDFLAGS) $< -o $@
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clean:
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rm -f $(ALL_PROGRAMS)
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rm -f $(OUTPUT)include/linux/gpio.h
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find $(if $(OUTPUT),$(OUTPUT),.) -name '*.o' -delete -o -name '\.*.d' -delete
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install: $(ALL_PROGRAMS)
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install -d -m 755 $(DESTDIR)$(bindir); \
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for program in $(ALL_PROGRAMS); do \
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install $$program $(DESTDIR)$(bindir); \
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done
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FORCE:
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.PHONY: all install clean FORCE prepare
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