Fix building docs (case.fpp include error) #417 (#418)

src/common/include/case.fpp

@@ -0,0 +1,7 @@
+! This file exists so that Fypp can be run without generating case.fpp files for
+! each target. This is useful when generating documentation, for example. This
+! should also let MFC be built with CMake directly, without invoking mfc.sh.
+
+! For pre-process.
+#:def analytical()
+#:enddef

toolchain/mfc/case.py

@@ -182,21 +182,15 @@ def __get_sim_fpp(self, print: bool) -> str:
         return """\
 ! This file is purposefully empty. It is only important for builds that make use
 ! of --case-optimization.
-"""
-
-    def __get_post_fpp(self, _) -> str:
-        return """\
-! This file is purposefully empty for all post-process builds.
 """
 
     def get_fpp(self, target, print = True) -> str:
         def _default(_) -> str:
-            return ""
+            return "! This file is purposefully empty."
 
         result = {
-            "pre_process"  : self.__get_pre_fpp,
-            "simulation"   : self.__get_sim_fpp,
-            "post_process" : self.__get_post_fpp,
+            "pre_process" : self.__get_pre_fpp,
+            "simulation"  : self.__get_sim_fpp,
         }.get(build.get_target(target).name, _default)(print)
 
         return result