Fix GPI-2 and enable TAGASPI

The rdma-core driver.h include is no longer installed:

 56dd87acd2

So ibv_read_sysfs_file() is not defined. As the symbols is still
distributed, we simply add the missing prototype manually.

Similarly, the gaspi_size_t gaspi_get_system_mem() function is not
available from the gaspi public headers, so we define it in the
max_mem.c test.

Fixes: rarias/bscpkgs#7

flake.nix

@@ -13,8 +13,5 @@
       bscOverlay = import ./overlay.nix;
       overlays.default = self.bscOverlay;
       legacyPackages.x86_64-linux = pkgs;
-
-      # propagate nixpkgs lib, so we can do bscpkgs.lib
-      inherit (nixpkgs) lib;
     };
 }

overlay.nix

@@ -10,9 +10,6 @@ let
     "printf '%s\n' ${toString (collect (x: x ? outPath) pkgs)} > $out";
 
   bscPkgs = {
-    aoccUnwrapped = callPackage ./pkgs/aocc/unwrapped.nix { };
-    aocc = callPackage ./pkgs/aocc/default.nix { };
-    stdenvAocc = final.overrideCC final.stdenv final.aocc;
     bench6 = callPackage ./pkgs/bench6/default.nix { };
     bigotes = callPackage ./pkgs/bigotes/default.nix { };
     clangOmpss2 = callPackage ./pkgs/llvm-ompss2/default.nix { };

pkgs/aocc/default.nix

@@ -1,16 +0,0 @@
-{ wrapCCWith
-, aoccUnwrapped
-}:
-
-let
-  cc = aoccUnwrapped;
-in wrapCCWith {
-  inherit cc;
-
-  extraBuildCommands = ''
-    echo "-isystem ${cc}/include" >> $out/nix-support/cc-cflags
-
-    wrap aocc   $wrapper $ccPath/clang
-    wrap aocc++ $wrapper $ccPath/clang++
-  '';
-}

pkgs/aocc/unwrapped.nix

@@ -1,51 +0,0 @@
-{ lib
-, fetchurl
-, stdenv
-, autoPatchelfHook
-, rocmPackages
-, zlib
-, libffi
-, elfutils
-}:
-
-let
-  # in newer nixpkgs the runtime is hsakmt
-  rocmRuntime =
-    if rocmPackages ? hsakmt then
-      rocmPackages.hsakmt
-    else
-      rocmPackages.rocm-runtime;
-in
-stdenv.mkDerivation {
-  pname = "aocc-compiler";
-  version = "5.0.0";
-
-  src = fetchurl {
-    url = "https://download.amd.com/developer/eula/aocc/aocc-5-0/aocc-compiler-5.0.0.tar";
-    sha256 = "sha256-lm+sLSx1np3m6WnBCtp6ezBsET9/HgfqN2gp7IY4Dao=";
-  };
-
-  nativeBuildInputs = [ autoPatchelfHook ];
-  buildInputs = [
-    elfutils
-    zlib
-    rocmRuntime
-    stdenv.cc.cc.lib
-  ];
-  phases = [ "unpackPhase" "installPhase" "fixupPhase" ];
-  dontStrip = true;
-
-  installPhase = ''
-    mkdir -p $out
-    cp -a . $out/
-
-    ln -s ${lib.getLib libffi}/lib/libffi.so $out/lib/libffi.so.6
-  '';
-
-  passthru = {
-    inherit rocmRuntime;
-    isClang = true; # Needed for wrapCCWith
-  };
-
-  meta.mainProgram = "clang";
-}