1 files changed, 83 insertions, 0 deletions
diff --git a/nixpkgs/pkgs/development/libraries/hwloc/default.nix b/nixpkgs/pkgs/development/libraries/hwloc/default.nix
new file mode 100644
index 000000000000..308120f194d9
--- /dev/null
+++ b/nixpkgs/pkgs/development/libraries/hwloc/default.nix
@@ -0,0 +1,83 @@
+{ lib, stdenv, fetchurl, pkg-config, expat, ncurses, pciutils, numactl
+, x11Support ? false, libX11 ? null, cairo ? null
+}:
+
+assert x11Support -> libX11 != null && cairo != null;
+
+with lib;
+
+stdenv.mkDerivation rec {
+  pname = "hwloc";
+  version = "2.8.0";
+
+  src = fetchurl {
+    url = "https://www.open-mpi.org/software/hwloc/v${versions.majorMinor version}/downloads/hwloc-${version}.tar.bz2";
+    sha256 = "sha256-NIpy/NSMMqgj7h2hSa6ZIgPnrQM1SeZK7W6m7rAfQsE=";
+  };
+
+  configureFlags = [
+    "--localstatedir=/var"
+    "--enable-netloc"
+  ];
+
+  # XXX: libX11 is not directly needed, but needed as a propagated dep of Cairo.
+  nativeBuildInputs = [ pkg-config ];
+
+  # Filter out `null' inputs.  This allows users to `.override' the
+  # derivation and set optional dependencies to `null'.
+  buildInputs = lib.filter (x: x != null)
+   ([ expat ncurses ]
+     ++  (optionals x11Support [ cairo libX11 ])
+     ++  (optionals stdenv.isLinux [ numactl ]));
+
+  propagatedBuildInputs =
+    # Since `libpci' appears in `hwloc.pc', it must be propagated.
+    optional stdenv.isLinux pciutils;
+
+  enableParallelBuilding = true;
+
+  postInstall =
+    optionalString (stdenv.isLinux && numactl != null)
+      '' if [ -d "${numactl}/lib64" ]
+         then
+             numalibdir="${numactl}/lib64"
+         else
+             numalibdir="${numactl}/lib"
+             test -d "$numalibdir"
+         fi
+
+         sed -i "$lib/lib/libhwloc.la" \
+             -e "s|-lnuma|-L$numalibdir -lnuma|g"
+      '';
+
+  # Checks disabled because they're impure (hardware dependent) and
+  # fail on some build machines.
+  doCheck = false;
+
+  outputs = [ "out" "lib" "dev" "doc" "man" ];
+
+  meta = {
+    description = "Portable abstraction of hierarchical architectures for high-performance computing";
+    longDescription = ''
+       hwloc provides a portable abstraction (across OS,
+       versions, architectures, ...) of the hierarchical topology of
+       modern architectures, including NUMA memory nodes, sockets,
+       shared caches, cores and simultaneous multithreading.  It also
+       gathers various attributes such as cache and memory
+       information.  It primarily aims at helping high-performance
+       computing applications with gathering information about the
+       hardware so as to exploit it accordingly and efficiently.
+
+       hwloc may display the topology in multiple convenient
+       formats.  It also offers a powerful programming interface to
+       gather information about the hardware, bind processes, and much
+       more.
+    '';
+
+    # https://www.open-mpi.org/projects/hwloc/license.php
+    license = licenses.bsd3;
+    homepage = "https://www.open-mpi.org/projects/hwloc/";
+    maintainers = with maintainers; [ fpletz markuskowa ];
+    platforms = platforms.all;
+  };
+}