Fix stupid fucking bug with simulator compilation

TouchGFX/simulator/gcc/Makefile

@@ -16,7 +16,6 @@ application_path := $(call qs,$(abspath $(call sq,$(makefile_path)../..)))
 # Since the path may show up as a target in the Makefile, we can't have a colon
 # in it. So we replace z:/ with /z/ to avoid this.
 subst_drivename = $(shell echo $(1) | sed -e 's!^\([a-zA-Z]\):/!/\1/!')
-export subst_drivename
 application_path := $(call subst_drivename,$(application_path))
 
 .PHONY: clean assets all
@@ -26,7 +25,7 @@ all clean assets:
 $(error Spaces not allowed in path)
 else
 
-ADDITIONAL_SOURCES := $(application_path)/../Core/Src/vehicle_state.c
+ADDITIONAL_SOURCES := vehicle_state.c
 ADDITIONAL_INCLUDE_PATHS := $(application_path)/../Core/Inc
 ADDITIONAL_LIBRARY_PATHS := 
 ADDITIONAL_LIBRARIES :=