diff --git a/pkgs/os-specific/windows/pthread-w32/default.nix b/pkgs/os-specific/windows/pthread-w32/default.nix
new file mode 100644
index 000000000000..39afd119643b
--- /dev/null
+++ b/pkgs/os-specific/windows/pthread-w32/default.nix
@@ -0,0 +1,53 @@
+{ fetchurl, stdenv, mingw_headers }:
+
+# This file is tweaked for cross-compilation only.
+assert stdenv ? cross;
+
+stdenv.mkDerivation {
+  name = "pthread-w32-1.10.0";
+
+  src = fetchurl {
+    url = "ftp://sourceware.org/pub/pthreads-win32/pthreads-w32-1-10-0-release.tar.gz";
+    sha256 = "1vllxxfa9a7mssb1x98a2r736vsv5ll3sjizbr7a8hw8j9p18j7n";
+  };
+
+  configurePhase =
+    '' sed -i GNUmakefile \
+           -e 's/CC=gcc/CC=i686-pc-mingw32-gcc/g ;
+               s/windres/i686-pc-mingw32-windres/g ;
+               s/dlltool/i686-pc-mingw32-dlltool/g'
+    '';
+
+  buildInputs = [ mingw_headers ];
+
+  buildPhase = "make GC";        # to build the GNU C dll with C cleanup code
+
+  installPhase =
+    '' mkdir -p "$out" "$out/include" "$out/lib"
+       cp -v *pthread*{dll,a} "$out/lib"
+       cp -v pthread.h semaphore.h sched.h "$out/include"
+    '';
+
+  meta = {
+    description = "POSIX threads for Woe32";
+
+    longDescription =
+      '' The POSIX 1003.1-2001 standard defines an application programming
+         interface (API) for writing multithreaded applications.  This
+         interface is known more commonly as pthreads.  A good number of
+         modern operating systems include a threading library of some kind:
+         Solaris (UI) threads, Win32 threads, DCE threads, DECthreads, or any
+         of the draft revisions of the pthreads standard.  The trend is that
+         most of these systems are slowly adopting the pthreads standard API,
+         with application developers following suit to reduce porting woes.
+
+         Woe32 does not, and is unlikely to ever, support pthreads natively.
+         This project seeks to provide a freely available and high-quality
+         solution to this problem.
+      '';
+
+    homepage = http://sourceware.org/pthreads-win32/;
+
+    license = "LGPLv2.1+";
+  };
+}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 34cb5acf25aa..4bf3f43d4550 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -6253,6 +6253,10 @@ let
       paths = [ w32api mingw_runtime ];
     };
 
+    pthreads = callPackage ../os-specific/windows/pthread-w32 {
+      mingw_headers = mingw_headers2;
+    };
+
     wxMSW = callPackage ../os-specific/windows/wxMSW-2.8 { };
   };