aboutsummaryrefslogtreecommitdiff
path: root/tools/gpio
diff options
context:
space:
mode:
authorAndy Shevchenko <andriy.shevchenko@linux.intel.com>2016-06-19 23:41:11 +0300
committerLinus Walleij <linus.walleij@linaro.org>2016-06-23 11:07:13 +0200
commit8674cea84dc6c0b98d8f45d6f2cf348864aabf1b (patch)
tree8c6443596936ff2eead94a4ef52fc9ed95ca20a7 /tools/gpio
parentdd3b204af11b50be6dc77e18b88b3c646bba354c (diff)
downloadlinux-linaro-stable-8674cea84dc6c0b98d8f45d6f2cf348864aabf1b.tar.gz
tools/gpio: move to tools buildsystem
There is a nice buildsystem dedicated for userspace tools in Linux kernel tree. Switch gpio target to be built by it. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Alexandre Courbot <acourbot@nvidia.com> Tested-by: Alexandre Courbot <acourbot@nvidia.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'tools/gpio')
-rw-r--r--tools/gpio/Build3
-rw-r--r--tools/gpio/Makefile69
2 files changed, 64 insertions, 8 deletions
diff --git a/tools/gpio/Build b/tools/gpio/Build
new file mode 100644
index 000000000000..620c1937d957
--- /dev/null
+++ b/tools/gpio/Build
@@ -0,0 +1,3 @@
+lsgpio-y += lsgpio.o gpio-utils.o
+gpio-hammer-y += gpio-hammer.o gpio-utils.o
+gpio-event-mon-y += gpio-event-mon.o gpio-utils.o
diff --git a/tools/gpio/Makefile b/tools/gpio/Makefile
index 619314ff9bd6..5a82f15d0071 100644
--- a/tools/gpio/Makefile
+++ b/tools/gpio/Makefile
@@ -1,14 +1,67 @@
+include ../scripts/Makefile.include
+
+ifeq ($(srctree),)
+srctree := $(patsubst %/,%,$(dir $(shell pwd)))
+srctree := $(patsubst %/,%,$(dir $(srctree)))
+endif
+
+# Do not use make's built-in rules
+# (this improves performance and avoids hard-to-debug behaviour);
+MAKEFLAGS += -r
+
CC = $(CROSS_COMPILE)gcc
-CFLAGS += -O2 -Wall -g -D_GNU_SOURCE
+LD = $(CROSS_COMPILE)ld
+CFLAGS += -O2 -Wall -g -D_GNU_SOURCE -I$(OUTPUT)include
+
+ALL_TARGETS := lsgpio gpio-hammer gpio-event-mon
+ALL_PROGRAMS := $(patsubst %,$(OUTPUT)%,$(ALL_TARGETS))
+
+all: $(ALL_PROGRAMS)
-all: lsgpio gpio-hammer gpio-event-mon
+export srctree OUTPUT CC LD CFLAGS
+include $(srctree)/tools/build/Makefile.include
-lsgpio: lsgpio.o gpio-utils.o
-gpio-hammer: gpio-hammer.o gpio-utils.o
-gpio-event-mon: gpio-event-mon.o gpio-utils.o
+#
+# We need the following to be outside of kernel tree
+#
+$(OUTPUT)include/linux/gpio.h: ../../include/uapi/linux/gpio.h
+ mkdir -p $(OUTPUT)include/linux 2>&1 || true
+ ln -sf $(CURDIR)/../../include/uapi/linux/gpio.h $@
-%.o: %.c gpio-utils.h
+prepare: $(OUTPUT)include/linux/gpio.h
+
+#
+# lsgpio
+#
+LSGPIO_IN := $(OUTPUT)lsgpio-in.o
+$(LSGPIO_IN): prepare FORCE
+ $(Q)$(MAKE) $(build)=lsgpio
+$(OUTPUT)lsgpio: $(LSGPIO_IN)
+ $(QUIET_LINK)$(CC) $(CFLAGS) $(LDFLAGS) $< -o $@
+
+#
+# gpio-hammer
+#
+GPIO_HAMMER_IN := $(OUTPUT)gpio-hammer-in.o
+$(GPIO_HAMMER_IN): prepare FORCE
+ $(Q)$(MAKE) $(build)=gpio-hammer
+$(OUTPUT)gpio-hammer: $(GPIO_HAMMER_IN)
+ $(QUIET_LINK)$(CC) $(CFLAGS) $(LDFLAGS) $< -o $@
+
+#
+# gpio-event-mon
+#
+GPIO_EVENT_MON_IN := $(OUTPUT)gpio-event-mon-in.o
+$(GPIO_EVENT_MON_IN): prepare FORCE
+ $(Q)$(MAKE) $(build)=gpio-event-mon
+$(OUTPUT)gpio-event-mon: $(GPIO_EVENT_MON_IN)
+ $(QUIET_LINK)$(CC) $(CFLAGS) $(LDFLAGS) $< -o $@
-.PHONY: clean
clean:
- rm -f *.o lsgpio gpio-hammer gpio-event-mon
+ rm -f $(ALL_PROGRAMS)
+ rm -f $(OUTPUT)include/linux/gpio.h
+ find $(if $(OUTPUT),$(OUTPUT),.) -name '*.o' -delete -o -name '\.*.d' -delete
+
+FORCE:
+
+.PHONY: all clean FORCE prepare