Makefile: implement dkms_install/uninstall targets

Author: spbnick

Makefile

@@ -12,6 +12,8 @@ HID_REBIND := /sbin/hid-rebind
 PACKAGE_NAME = digimend-kernel-drivers
 PACKAGE_VERSION = 8
 PACKAGE = $(PACKAGE_NAME)-$(PACKAGE_VERSION)
+DKMS_MODULES_NAME = digimend
+DKMS_MODULES = $(DKMS_MODULES_NAME)/$(PACKAGE_VERSION)
 
 modules modules_install clean:
 	$(MAKE) -C $(KDIR) SUBDIRS=$(PWD) $@
@@ -38,5 +40,38 @@ install: modules_install files_install
 
 uninstall: modules_uninstall files_uninstall
 
+dkms_check:
+	@if ! which dkms >/dev/null; then \
+	    echo "DKMS not found, aborting." >&2; \
+	    echo "Make sure DKMS is installed,"; \
+	    echo "and \"make\" is running under sudo, or as root."; \
+	    exit 1; \
+	fi
+
+dkms_modules_install: dkms_check
+	@if dkms status $(DKMS_MODULES_NAME) | grep . >/dev/null; then \
+	    echo "DKMS has DIGImend modules added already, aborting." >&2; \
+	    echo "Run \"make dkms_uninstall\" first" >&2; \
+	    exit 1; \
+	fi
+	dkms add .
+	dkms build $(DKMS_MODULES)
+	dkms install $(DKMS_MODULES)
+
+dkms_modules_uninstall: dkms_check
+	set -e -x; \
+	dkms status $(DKMS_MODULES_NAME) | \
+	    while IFS=', :' read -r modules_name \
+	                            modules_version \
+	                            kernel_version \
+	                            ignore; do \
+	        dkms remove "$$modules_name/$$modules_version" \
+	                    -k "$$kernel_version"; \
+	    done
+
+dkms_install: dkms_modules_install files_install
+
+dkms_uninstall: dkms_modules_uninstall files_uninstall
+
 dist:
 	git archive --format=tar.gz --prefix=$(PACKAGE)/ HEAD > $(PACKAGE).tar.gz