--- a/src/gnat/gnat_config.ml	2017-10-18 09:07:03.118919785 +0200
+++ b/src/gnat/gnat_config.ml	2017-10-18 09:07:45.198216939 +0200
@@ -12,10 +12,7 @@
   | Limit_Check of Gnat_expl.check
   | Limit_Line of Gnat_loc.loc
 
-let spark_prefix =
-  (Filename.dirname
-          (Filename.dirname (Filename.dirname
-          (Filename.dirname Sys.executable_name))))
+let spark_prefix = "/usr"
 
 let rec file_concat l =
   match l with
--- a/Makefile.in	2020-05-27 21:19:08.736241502 +0200
+++ b/Makefile.in	2020-05-27 21:19:14.042156954 +0200
@@ -50,7 +50,6 @@
 OCAMLINSTALLLIB  = $(DESTDIR)@OCAMLINSTALLLIB@
 OCAMLBEST = @OCAMLBEST@
 OCAMLVERSION = @OCAMLVERSION@
-CC        = gcc
 COQC      = @COQC@
 COQDEP    = @COQDEP@
 FRAMAC_LIBDIR = $(DESTDIR)@FRAMAC_LIBDIR@