Added udev rule and way to install it through configuration

Makefile

@@ -52,6 +52,7 @@ re: fclean all
 install:
 	$(INST) -D -m 644 lib$(NAME).a $(ILIBDIR)/lib$(NAME).a
 	$(INST) -D -m 644 $(INCDIR)/lib$(NAME).h $(IINCDIR)/lib$(NAME).h
+	$(if $(INSTALL_UDEV_RULE),$(INST) -D -m 644 udev.rules $(UDEVDIR)/60-casio-usb.rules)
 
 ## Documentation related
 ## - Make manpages directories

configure

@@ -15,6 +15,8 @@ prefix=/usr
 libdir='$(IPREFIX)/lib/'"$(gcc --print-multiarch)"
 includedir='$(IPREFIX)/include/'"$(gcc --print-multiarch)"
 mandir='$(IPREFIX)/share/man'
+udevrulesdir='/etc/udev/rules.d'
+install_udev_rule=1
 
 # Help
 usage() {
@@ -24,15 +26,19 @@ Usage: $0 [OPTION]
 Defaults for the options are specified in brackets.
 
 Build options:
-  --loglevel              library log level [$loglevel]
+  --loglevel                library log level [$loglevel]
+
+Installation options:
+  --noinstall-udev-rule     should not install udev script
 
 Installation directories:
-  --prefix=PREFIX         main installation prefix [$prefix]
+  --prefix=PREFIX           main installation prefix [$prefix]
 
 Fine tuning of the installation directories:
-  --libdir=DIR            library files of the linker [$libdir]
-  --includedir=DIR        include files for the compiler [$includedir]
-  --mandir=DIR            man root [$mandir]
+  --libdir=DIR              library files of the linker [$libdir]
+  --includedir=DIR          include files for the compiler [$includedir]
+  --mandir=DIR              man root [$mandir]
+  --udevrulesdir=DIR        udev rules directory [$udevrulesdir]
 
 EOF
 exit 0
@@ -54,6 +60,8 @@ case "$arg" in
 none]" && continue
 	# then set
 	loglevel=$level ;;
+--noinstall-udev-rule)
+	install_udev_rule= ;;
 --prefix=*)
 	prefix=${arg#*=} ;;
 --libdir=*)
@@ -62,6 +70,8 @@ none]" && continue
 	includedir=${arg#*=} ;;
 --mandir=*)
 	mandir=${arg#*=} ;;
+--udevrulesdir=*)
+	udevrulesdir=${arg#*=} ;;
 *) echo "$0: '$arg': DIDN'T READ LOL" ;;
 esac
 done
@@ -83,10 +93,13 @@ cat <<EOF
 # - Build options
 LOG_LEVEL = $loglevel
 # - Install options
+INSTALL_UDEV_RULE = $install_udev_rule
+# - Install prefix and directories
 IPREFIX = $prefix
 ILIBDIR = $libdir
 IINCDIR = $includedir
 IMANDIR = $mandir
+UDEVDIR = $udevrulesdir
 EOF
 
 exec 1>&3 3>&-

udev.rules

@@ -0,0 +1,2 @@
+# If device is CASIO calculator product, give access to everyone
+DRIVER=="usb", ATTRS{idVendor}=="07cf", ATTRS{idProduct}=="6101", MODE="0666"