adolc: modernize; fix clang build (NixOS#354642)

pkgs/by-name/ad/adolc/package.nix

@@ -1,23 +1,29 @@
-{ lib, stdenv, fetchFromGitHub }:
+{
+  lib,
+  stdenv,
+  fetchFromGitHub,
+  llvmPackages,
+}:
 
-stdenv.mkDerivation rec {
+stdenv.mkDerivation (finalAttrs: {
   pname = "adolc";
   version = "2.7.2";
 
   src = fetchFromGitHub {
     owner = "coin-or";
     repo = "ADOL-C";
-    sha256 = "1w0x0p32r1amfmh2lyx33j4cb5bpkwjr5z0ll43zi5wf5gsvckd1";
-    rev = "releases/${version}";
+    rev = "refs/tags/releases/${finalAttrs.version}";
+    hash = "sha256-oU229SuOl/gHoRT8kiWfd5XFiByjeypgdVWFLMYFHfA=";
   };
 
   configureFlags = [ "--with-openmp-flag=-fopenmp" ];
 
+  buildInputs = lib.optional stdenv.cc.isClang llvmPackages.openmp;
+
   meta = with lib; {
     description = "Automatic Differentiation of C/C++";
     homepage = "https://github.com/coin-or/ADOL-C";
     maintainers = [ maintainers.bzizou ];
     license = licenses.gpl2Plus;
   };
-}
-
+})