Add an explicit dependency on checkprogsize target for the final binary

Author: valeros

builder/main.py

@@ -97,6 +97,7 @@
 else:
     target_elf = env.BuildProgram()
     target_firm = env.ElfToBin(join("$BUILD_DIR", "${PROGNAME}"), target_elf)
+    env.Depends(target_firm, "checkprogsize")
 
 AlwaysBuild(env.Alias("nobuild", target_firm))
 target_buildprog = env.Alias("buildprog", target_firm, target_firm)