diff --git a/os/hal/ports/STM32/STM32G4xx/platform.mk b/os/hal/ports/STM32/STM32G4xx/platform.mk
new file mode 100644
index 00000000..3eef076b
--- /dev/null
+++ b/os/hal/ports/STM32/STM32G4xx/platform.mk
@@ -0,0 +1,23 @@
+include ${CHIBIOS}/os/hal/ports/STM32/STM32G4xx/platform.mk
+
+ifeq ($(USE_SMART_BUILD),yes)
+
+# Configuration files directory
+ifeq ($(CONFDIR),)
+  CONFDIR = .
+endif
+
+HALCONF := $(strip $(shell cat $(CONFDIR)/halconf.h $(CONFDIR)/halconf_community.h | egrep -e "\#define"))
+
+else
+endif
+
+include ${CHIBIOS_CONTRIB}/os/hal/ports/STM32/LLD/CRCv1/driver.mk
+include ${CHIBIOS_CONTRIB}/os/hal/ports/STM32/LLD/FSMCv1/driver.mk
+include ${CHIBIOS_CONTRIB}/os/hal/ports/STM32/LLD/TIMv1/driver.mk
+include ${CHIBIOS_CONTRIB}/os/hal/ports/STM32/LLD/COMPv1/driver.mk
+include ${CHIBIOS_CONTRIB}/os/hal/ports/STM32/LLD/OPAMPv1/driver.mk
+
+# Shared variables
+ALLCSRC += $(PLATFORMSRC_CONTRIB)
+ALLINC  += $(PLATFORMINC_CONTRIB)