nixpkgs/pkgs/development/tools/profiling/oprofile/default.nix

{ stdenv, fetchurl, binutils, popt, zlib, pkgconfig, linuxHeaders
, withGUI ? false , qt4 ? null}:

# libX11 is needed because the Qt build stuff automatically adds `-lX11'.
assert withGUI -> qt4 != null;

stdenv.mkDerivation rec {
  name = "oprofile-1.0.0";

  src = fetchurl {
    url = "mirror://sourceforge/oprofile/${name}.tar.gz";
    sha256 = "0nn4wfvwy4nii25y6lwlrnzx9ah4nz0r93yk7hswiy6wxjs10wc4";
  };

  buildInputs = [ binutils zlib popt pkgconfig linuxHeaders ]
    ++ stdenv.lib.optionals withGUI [ qt4 ];

  configureFlags = [
      "--with-kernel=${linuxHeaders}"
      "--disable-shared"   # needed because only the static libbfd is available
    ]
    ++ stdenv.lib.optional withGUI "--with-qt-dir=${qt4} --enable-gui=qt4";

  meta = {
    description = "System-wide profiler for Linux";
    longDescription = ''
      OProfile is a system-wide profiler for Linux systems, capable of
      profiling all running code at low overhead.  It consists of a
      kernel driver and a daemon for collecting sample data, and
      several post-profiling tools for turning data into information.

      OProfile leverages the hardware performance counters of the CPU
      to enable profiling of a wide variety of interesting statistics,
      which can also be used for basic time-spent profiling. All code
      is profiled: hardware and software interrupt handlers, kernel
      modules, the kernel, shared libraries, and applications.
    '';
    license = stdenv.lib.licenses.gpl2;
    homepage = http://oprofile.sourceforge.net/;

    platforms = stdenv.lib.platforms.linux;
    maintainers = [ ];
  };
}