Make sysconfig directory configurable

CMakeLists.txt

 option(USE_APPARMOR "Enable AppArmor profile" OFF)
 
 set(CHROOT_DIR "${CMAKE_INSTALL_PREFIX}/lib/${PROJECT_NAME}" CACHE PATH "Chroot jail for daemon")
-set(CONFIG_DIR "/etc/default" CACHE PATH "Location of configuration file")
+set(SYSCONF_DIR "/etc" CACHE PATH "Global system configuration folder")
+set(CONFIG_DIR "${SYSCONF_DIR}/default" CACHE PATH "Location of startup configuration file")
 set(DOC_DIR "share/doc/${PROJECT_NAME}" CACHE PATH "Path for documentation files")
 
 find_program(HELP2MAN help2man DOC "path to help2man executable")
 find_program(CHKCONFIG chkconfig DOC "path to chkconfig executable")
 
 if(NOT DEFINED INIT_FLAVOR)
-    if(IS_DIRECTORY "/etc/init" AND EXISTS "/lib/init/upstart-job")
+    if(IS_DIRECTORY "${SYSCONF_DIR}/init" AND EXISTS "/lib/init/upstart-job")
         message(STATUS "Detected init flavor: upstart")
         set(INIT_FLAVOR "upstart" CACHE STRING "Init daemon of this system")
-    elseif(IS_DIRECTORY "/etc/init.d" AND EXISTS "/lib/lsb/init-functions")
+    elseif(IS_DIRECTORY "${SYSCONF_DIR}/init.d" AND EXISTS "/lib/lsb/init-functions")
         message(STATUS "Detected init flavor: sysv-lsb")
         set(INIT_FLAVOR "sysv-lsb" CACHE STRING "Init daemon of this system")
-    elseif(IS_DIRECTORY "/etc/init.d" AND EXISTS "/etc/init.d/functions")
+    elseif(IS_DIRECTORY "${SYSCONF_DIR}/init.d" AND EXISTS "${SYSCONF_DIR}/init.d/functions")
         message(STATUS "Detected init flavor: sysv-redhat")
         set(INIT_FLAVOR "sysv-redhat" CACHE STRING "Init daemon of this system")
     else()
 endif()
 
 if(USE_APPARMOR)
-	install(FILES ${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}.apparmor DESTINATION "/etc/apparmor.d" RENAME "${APPARMOR_PROFILE}")
+	install(FILES ${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}.apparmor DESTINATION "${SYSCONF_DIR}/apparmor.d" RENAME "${APPARMOR_PROFILE}")
 endif()
 
 install(TARGETS ${PROJECT_NAME} DESTINATION "sbin")

postinstall.cmake.in

 set(GENERATE_SRS_SECRET "@GENERATE_SRS_SECRET@")
+set(SYSCONF_DIR "@SYSCONF_DIR@")
 set(CHROOT_DIR "@CHROOT_DIR@")
 set(CONFIG_DIR "@CONFIG_DIR@")
 set(INIT_FLAVOR "@INIT_FLAVOR@")
 endif()
 
 if(INIT_FLAVOR STREQUAL "sysv-lsb")
-	file(INSTALL FILES "@CMAKE_CURRENT_BINARY_DIR@/@PROJECT_NAME@.lsb_init" TYPE PROGRAM DESTINATION "/etc/init.d" RENAME "@PROJECT_NAME@")
+	file(INSTALL FILES "@CMAKE_CURRENT_BINARY_DIR@/@PROJECT_NAME@.lsb_init" TYPE PROGRAM DESTINATION "${SYSCONF_DIR}/init.d" RENAME "@PROJECT_NAME@")
 	if(INSSERV)
 		execute_process(
-			COMMAND ${INSSERV} -p "$ENV{DESTDIR}/etc/init.d" @PROJECT_NAME@
+			COMMAND ${INSSERV} -p "$ENV{DESTDIR}${SYSCONF_DIR}/init.d" @PROJECT_NAME@
 		)
 	endif()
 elseif(INIT_FLAVOR STREQUAL "sysv-redhat")
-	file(INSTALL FILES "@CMAKE_CURRENT_BINARY_DIR@/@PROJECT_NAME@.rh_init" TYPE PROGRAM DESTINATION "/etc/init.d" RENAME "@PROJECT_NAME@")
+	file(INSTALL FILES "@CMAKE_CURRENT_BINARY_DIR@/@PROJECT_NAME@.rh_init" TYPE PROGRAM DESTINATION "${SYSCONF_DIR}/init.d" RENAME "@PROJECT_NAME@")
 	if(CHKCONFIG AND NOT "$ENV{DESTDIR}")
 		execute_process(
 			COMMAND ${CHKCONFIG} --add @PROJECT_NAME@
 		)
 	endif()
 elseif(INIT_FLAVOR STREQUAL "upstart")
-	file(INSTALL FILES "@CMAKE_CURRENT_BINARY_DIR@/@PROJECT_NAME@.upstart" DESTINATION "/etc/init" RENAME "@PROJECT_NAME@.conf")
+	file(INSTALL FILES "@CMAKE_CURRENT_BINARY_DIR@/@PROJECT_NAME@.upstart" DESTINATION "${SYSCONF_DIR}/init" RENAME "@PROJECT_NAME@.conf")
 endif()
 
-if(GENERATE_SRS_SECRET AND DD AND BASE64 AND EXISTS "/dev/urandom" AND NOT EXISTS "$ENV{DESTDIR}/etc/${SECRET_FILE}")
+if(GENERATE_SRS_SECRET AND DD AND BASE64 AND EXISTS "/dev/urandom" AND NOT EXISTS "$ENV{DESTDIR}${SYSCONF_DIR}/${SECRET_FILE}")
 	message(STATUS "Generating secret key")
 	execute_process(
 		COMMAND ${DD} if=/dev/urandom bs=18 count=1
 		ERROR_QUIET
 		OUTPUT_STRIP_TRAILING_WHITESPACE
 	)
-file(INSTALL FILES "@CMAKE_CURRENT_BINARY_DIR@/${SECRET_FILE}" DESTINATION "/etc" RENAME "${SECRET_FILE}" FILE_PERMISSIONS OWNER_READ OWNER_WRITE)
+file(INSTALL FILES "@CMAKE_CURRENT_BINARY_DIR@/${SECRET_FILE}" DESTINATION "${SYSCONF_DIR}" RENAME "${SECRET_FILE}" FILE_PERMISSIONS OWNER_READ OWNER_WRITE)
 file(REMOVE "@CMAKE_CURRENT_BINARY_DIR@/${SECRET_FILE}")
 endif()

postsrsd.lsb_init.in

 DESC="Postfix Sender Rewriting Scheme daemon"
 
 PIDFILE=/var/run/$NAME.pid
-SCRIPTNAME=/etc/init.d/$NAME
+SCRIPTNAME=@SYSCONF_DIR@/init.d/$NAME
 
 # Gracefully exit if the package has been removed.
 test -x $DAEMON || exit 0
 SRS_DOMAIN=`postconf -h mydomain || true`
 SRS_FORWARD_PORT=10001
 SRS_REVERSE_PORT=10002
-SRS_SECRET=/etc/@PROJECT_NAME@.secret
+SRS_SECRET=@SYSCONF_DIR@/@PROJECT_NAME@.secret
 RUN_AS=nobody
 CHROOT=@CHROOT_DIR@
 

postsrsd.rh_init.in

 DESC="Postfix Sender Rewriting Scheme daemon"
 
 PIDFILE=/var/run/$NAME.pid
-SCRIPTNAME=/etc/init.d/$NAME
+SCRIPTNAME=@SYSCONF_DIR@/init.d/$NAME
 
 # Gracefully exit if the package has been removed.
 test -x $DAEMON || exit 0
 
-. /etc/init.d/functions
+. @SYSCONF_DIR@/init.d/functions
 
 # Default configuration
 SRS_DOMAIN=`postconf -h mydomain || true`
 SRS_FORWARD_PORT=10001
 SRS_REVERSE_PORT=10002
-SRS_SECRET=/etc/@PROJECT_NAME@.secret
+SRS_SECRET=@SYSCONF_DIR@/@PROJECT_NAME@.secret
 RUN_AS=nobody
 CHROOT=@CHROOT_DIR@
 

postsrsd.upstart.in

 	SRS_DOMAIN=`postconf -h mydomain || true`
 	SRS_FORWARD_PORT=10001
 	SRS_REVERSE_PORT=10002
-	SRS_SECRET=/etc/@PROJECT_NAME@.secret
+	SRS_SECRET=@SYSCONF_DIR@/@PROJECT_NAME@.secret
 	SRS_EXCLUDE_DOMAINS=
 	RUN_AS=nobody
 	CHROOT=@CHROOT_DIR@