1################################################################################ 2# 3# gpio 4# 5################################################################################ 6 7LINUX_TOOLS += gpio 8 9GPIO_MAKE_OPTS = $(LINUX_MAKE_FLAGS) LDFLAGS="$(TARGET_LDFLAGS)" 10 11define GPIO_BUILD_CMDS 12 $(Q)if ! grep install $(LINUX_DIR)/tools/gpio/Makefile >/dev/null 2>&1 ; then \ 13 echo "Your kernel version is too old and does not have the gpio tools." ; \ 14 echo "At least kernel 4.8 must be used." ; \ 15 exit 1 ; \ 16 fi 17 18 $(TARGET_MAKE_ENV) $(MAKE1) -C $(LINUX_DIR)/tools \ 19 $(GPIO_MAKE_OPTS) \ 20 gpio 21endef 22 23define GPIO_INSTALL_TARGET_CMDS 24 $(TARGET_MAKE_ENV) $(MAKE1) -C $(LINUX_DIR)/tools \ 25 $(GPIO_MAKE_OPTS) \ 26 DESTDIR=$(TARGET_DIR) \ 27 gpio_install 28endef 29