samples: net: Enable LTO to fix flash overflow

krish2718 · karun2796 · commit d59c65cd1777 · 2025-05-16T19:22:52.000+05:30
Due to recent upmerge we are seeing flash overflow in aws_iot and
azure_iot_hub samples, so, enable LTO to fix the build.

Signed-off-by: Chaitanya Tata &lt;Chaitanya.Tata@nordicsemi.no&gt;
diff --git a/samples/net/aws_iot/boards/nrf7002dk_nrf5340_cpuapp_ns.conf b/samples/net/aws_iot/boards/nrf7002dk_nrf5340_cpuapp_ns.conf
@@ -109,3 +109,7 @@ CONFIG_TLS_CREDENTIALS_BACKEND_PROTECTED_STORAGE=y
 CONFIG_TFM_PROFILE_TYPE_SMALL=y
 CONFIG_PM_PARTITION_SIZE_TFM_SRAM=0xc000
 CONFIG_PM_PARTITION_SIZE_TFM=0x1fe00
+
+# Enable LTO to save flash memory
+CONFIG_LTO=y
+CONFIG_ISR_TABLES_LOCAL_DECLARATION=y
diff --git a/samples/net/azure_iot_hub/boards/nrf7002dk_nrf5340_cpuapp_ns.conf b/samples/net/azure_iot_hub/boards/nrf7002dk_nrf5340_cpuapp_ns.conf
@@ -104,3 +104,7 @@ CONFIG_TLS_CREDENTIALS_BACKEND_PROTECTED_STORAGE=y
 CONFIG_TFM_PROFILE_TYPE_SMALL=y
 CONFIG_PM_PARTITION_SIZE_TFM_SRAM=0xc000
 CONFIG_PM_PARTITION_SIZE_TFM=0x1fe00
+
+# Enable LTO to save flash memory
+CONFIG_LTO=y
+CONFIG_ISR_TABLES_LOCAL_DECLARATION=y
