compcert: build with Coq 8.11

And fix installation of development files
(use upstream Makefile rules instead of ad-hoc commands).

pkgs/development/compilers/compcert/default.nix

@@ -1,4 +1,4 @@
-{ stdenv, lib, fetchFromGitHub, makeWrapper
+{ stdenv, lib, fetchFromGitHub, fetchpatch, makeWrapper
 , coq, ocamlPackages, coq2html
 , tools ? stdenv.cc
 }:
@@ -21,11 +21,22 @@ stdenv.mkDerivation rec {
     sha256 = "1h4zhk9rrqki193nxs9vjvya7nl9yxjcf07hfqb6g77riy1vd2jr";
   };
 
+  patches = [
+   (fetchpatch {
+      url = "https://github.com/AbsInt/CompCert/commit/0a2db0269809539ccc66f8ec73637c37fbd23580.patch";
+      sha256 = "0n8qrba70x8f422jdvq9ddgsx6avf2dkg892g4ldh3jiiidyhspy";
+    })
+   (fetchpatch {
+      url = "https://github.com/AbsInt/CompCert/commit/5e29f8b5ba9582ecf2a1d0baeaef195873640607.patch";
+      sha256 = "184nfdgxrkci880lkaj5pgnify3plka7xfgqrgv16275sqppc5hc";
+    })
+  ];
+
   nativeBuildInputs = [ makeWrapper ];
   buildInputs = ocaml-pkgs ++ [ coq coq2html ];
   enableParallelBuilding = true;
 
-  patchPhase = ''
+  postPatch = ''
     substituteInPlace ./configure \
       --replace '{toolprefix}gcc' '{toolprefix}cc'
   '';
@@ -33,6 +44,7 @@ stdenv.mkDerivation rec {
   configurePhase = ''
     ./configure -clightgen \
       -prefix $out \
+      -coqdevdir $lib/lib/coq/${coq.coq-version}/user-contrib/compcert/ \
       -toolprefix ${tools}/bin/ \
       ${ccomp-platform}
   '';
@@ -47,12 +59,6 @@ stdenv.mkDerivation rec {
     mkdir -p $doc/share/doc/compcert
     mv doc/html $doc/share/doc/compcert/
 
-    # install compcert lib files; remove copy from $out, too
-    mkdir -p $lib/lib/coq/${coq.coq-version}/user-contrib/compcert/
-    mv backend cfrontend common cparser driver flocq x86 x86_64 lib \
-      $lib/lib/coq/${coq.coq-version}/user-contrib/compcert/
-    rm -rf $out/lib/compcert/coq
-
     # wrap ccomp to undefine _FORTIFY_SOURCE; ccomp invokes cc1 which sets
     # _FORTIFY_SOURCE=2 by default, but undefines __GNUC__ (as it should),
     # which causes a warning in libc. this suppresses it.

pkgs/top-level/all-packages.nix

@@ -8560,9 +8560,7 @@ in
 
   cmucl_binary = pkgsi686Linux.callPackage ../development/compilers/cmucl/binary.nix { };
 
-  compcert = callPackage ../development/compilers/compcert {
-    inherit (coqPackages_8_10) coq;
-  };
+  compcert = callPackage ../development/compilers/compcert {};
 
   computecpp-unwrapped = callPackage ../development/compilers/computecpp {};
   computecpp = wrapCCWith rec {