diff --git a/CMakeLists.txt b/CMakeLists.txt
index 723b300..5115501 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -13,10 +13,12 @@
 set(POWER_DBUS_OBJECT_NAME "xyz/openbmc_project/Chassis/Buttons/Power")
 set(RESET_DBUS_OBJECT_NAME "xyz/openbmc_project/Chassis/Buttons/Reset")
 set(ID_DBUS_OBJECT_NAME "xyz/openbmc_project/Chassis/Buttons/ID")
+set(GPIO_BASE_LABEL_NAME "1e780000.gpio")
 
 add_definitions(-DPOWER_DBUS_OBJECT_NAME="/${POWER_DBUS_OBJECT_NAME}0")
 add_definitions(-DRESET_DBUS_OBJECT_NAME="/${RESET_DBUS_OBJECT_NAME}0")
 add_definitions(-DID_DBUS_OBJECT_NAME="/${ID_DBUS_OBJECT_NAME}0")
+add_definitions(-DGPIO_BASE_LABEL_NAME="${GPIO_BASE_LABEL_NAME}")
 set(SRC_FILES src/power_button.cpp
     src/reset_button.cpp
     src/id_button.cpp
@@ -24,6 +26,13 @@
     src/gpio.cpp
 )
 
+option (
+    LOOKUP_GPIO_BASE
+    "Look up the GPIO base value in /sys/class/gpio. Otherwise use a base of 0." ON
+)
+
+configure_file (settings.hpp.in ${CMAKE_BINARY_DIR}/inc/settings.hpp)
+
 # import sdbusplus
 find_package(PkgConfig REQUIRED)
 pkg_check_modules(SDBUSPLUSPLUS sdbusplus REQUIRED)