systemtap: init at 51b7ca

master needs to be tracked in order to support recent kernels

pkgs/development/tools/profiling/systemtap/default.nix

@@ -0,0 +1,56 @@
+{ fetchurl, linuxPackages, makeWrapper, runCommand, fetchgit
+, elfutils, pkgconfig, gettext, stow, gnumake }:
+let
+  ## fetchgit info
+  url = git://sourceware.org/git/systemtap.git;
+  rev = "51b7cae3023adf137081059c7cc44a13f652ba4c";
+  sha256 = "18m3lf11r99f4yr1m172548lghc0i22zqbys1fwlwakbczz0a2lz";
+
+  inherit (linuxPackages) kernel;
+  version = kernel.stdenv.lib.substring 0 6 rev;
+
+  ## stap binaries
+  stapBuild = kernel.stdenv.mkDerivation {
+    name = "systemtap-${version}";
+    src = fetchgit { inherit url rev sha256; };
+    buildInputs = [ elfutils pkgconfig gettext ];
+    enableParallelBuilding = true;
+  };
+
+  ## a kernel build dir as expected by systemtap
+  kernelBuildDir = runCommand "kbuild-${kernel.version}-merged" {
+    buildInputs = [ stow ];
+  } ''
+    mkdir -p $out
+    stowFrom () {
+      D="$(dirname $1)"
+      P="$(basename $1)"
+      shift
+      stow -d $D -t $out -v "$@" -S $P
+    }
+    stowFrom ${kernel.dev}/lib/modules/${kernel.modDirVersion}/build --ignore=source
+    ln -s ${kernel.dev}/vmlinux $out/vmlinux
+    ln -s ${kernel}/System.map $out/System.map
+    ln -s ${kernel.dev}/lib/modules/${kernel.modDirVersion}/source $out/source
+  '';
+
+in runCommand "systemtap-${kernel.version}-${version}" {
+  inherit stapBuild kernelBuildDir;
+  buildInputs = [ makeWrapper ];
+  meta = with kernel.stdenv.lib; {
+    homepage = https://sourceware.org/systemtap/;
+    repositories.git = git://sourceware.org/git/systemtap.git;
+    description = "SystemTap provides a simple command line interface and scripting language for writing instrumentation for a live running kernel plus user-space applications.";
+    license = licenses.gpl2;
+    platforms = platforms.linux;
+  };
+} ''
+  mkdir -p $out/bin
+  for bin in $stapBuild/bin/*; do # hello emacs */
+    ln -s $bin $out/bin/$(basename $bin)
+  done
+  rm $out/bin/stap
+  makeWrapper $stapBuild/bin/stap $out/bin/stap \
+    --add-flags "-r $kernelBuildDir" \
+    --prefix PATH : ${kernel.stdenv.cc.cc}/bin:${elfutils}/bin:${gnumake}/bin
+''

pkgs/top-level/all-packages.nix

@@ -14963,6 +14963,8 @@ in
   # linux only by now
   synergy = callPackage ../applications/misc/synergy { };
 
+  systemtap = callPackage ../development/tools/profiling/systemtap { };
+
   tabbed = callPackage ../applications/window-managers/tabbed {
     # if you prefer a custom config, write the config.h in tabbed.config.h
     # and enable