diff --git a/meson_config.hpp.in b/meson_config.hpp.in
index 6610a44..ffc82a6 100644
--- a/meson_config.hpp.in
+++ b/meson_config.hpp.in
@@ -1,5 +1,6 @@
 #pragma once
 
+#include <array>
 #include <chrono>
 
 constexpr inline auto POWER_DBUS_OBJECT_NAME =
@@ -23,9 +24,12 @@
     "/xyz/openbmc_project/state/host";
 
 constexpr inline auto GPIO_BASE_LABEL_NAME = "1e780000.gpio";
+constexpr inline auto gpioDefFile = "/etc/default/obmc/gpio/gpio_defs.json";
 #define LOOKUP_GPIO_BASE @LOOKUP_GPIO_BASE@
 
 constexpr inline auto POWER_BUTTON_PROFILE = @POWER_BUTTON_PROFILE@;
 constexpr inline auto ID_LED_GROUP = @ID_LED_GROUP@;
 constexpr inline const auto LONG_PRESS_TIME_MS =
     std::chrono::milliseconds(@LONG_PRESS_TIME_MS@);
+
+constexpr inline static auto instances = std::to_array({ @INSTANCES@ });