diff --git a/pkgs/applications/misc/truecrypt/builder.sh b/pkgs/applications/misc/truecrypt/builder.sh
deleted file mode 100644
index 88820d4cad21..000000000000
--- a/pkgs/applications/misc/truecrypt/builder.sh
+++ /dev/null
@@ -1,15 +0,0 @@
-source $stdenv/setup
-
-tar xvfz $src
-cd truecrypt-*
-
-cp $pkcs11h pkcs11.h
-cp $pkcs11th pkcs11t.h
-cp $pkcs11fh pkcs11f.h
-
-make PKCS11_INC="`pwd`"
-
-mkdir -p $out/bin
-cp Main/truecrypt $out/bin
-mkdir -p $out/share/$name
-cp License.txt $out/share/$name/LICENSE
diff --git a/pkgs/applications/misc/truecrypt/default.nix b/pkgs/applications/misc/truecrypt/default.nix
index 2b66dd41a2a8..4787516cedd0 100644
--- a/pkgs/applications/misc/truecrypt/default.nix
+++ b/pkgs/applications/misc/truecrypt/default.nix
@@ -46,7 +46,24 @@ library, use the 'NOGUI' parameter:
 
 stdenv.mkDerivation {
   name = "truecrypt-7.1a";
-  builder = ./builder.sh;
+
+  patchPhase = "patch -p0 < ${./gcc6.patch}";
+
+  preBuild = ''
+    cp $pkcs11h pkcs11.h
+    cp $pkcs11th pkcs11t.h
+    cp $pkcs11fh pkcs11f.h
+  '';
+
+  makeFlags = [
+    ''PKCS11_INC="`pwd`"''
+    (if wxGUI then "" else "NOGUI=1")
+  ];
+
+  installPhase = ''
+    install -D -t $out/bin Main/truecrypt
+    install -D License.txt $out/share/$name/LICENSE
+  '';
 
   src = fetchurl {
     url = https://fossies.org/linux/misc/old/TrueCrypt-7.1a-Source.tar.gz;
@@ -68,14 +85,13 @@ stdenv.mkDerivation {
     sha256 = "5ae6a4f32ca737e02def3bf314c9842fb89be82bf00b6f4022a97d8d565522b8";
   };
 
-  buildInputs = [ pkgconfig fuse devicemapper wxGTK nasm ]; 
-  makeFlags = if wxGUI then "" else "NOGUI=1";
+  buildInputs = [ pkgconfig fuse devicemapper wxGTK nasm ];
 
   meta = {
     description = "Free Open-Source filesystem on-the-fly encryption";
     homepage = http://www.truecrypt.org/;
     license = "TrueCrypt License Version 2.6";
-    maintainers = with stdenv.lib.maintainers; [viric];
+    maintainers = with stdenv.lib.maintainers; [ viric ryantm ];
     platforms = with stdenv.lib.platforms; linux;
   };
 }
diff --git a/pkgs/applications/misc/truecrypt/gcc6.patch b/pkgs/applications/misc/truecrypt/gcc6.patch
new file mode 100644
index 000000000000..6e8c7da69e87
--- /dev/null
+++ b/pkgs/applications/misc/truecrypt/gcc6.patch
@@ -0,0 +1,61 @@
+--- Main/Resources.cpp	2016-05-16 16:47:35.846462041 +0200
++++ Main/Resources.cpp	2016-05-16 17:12:21.838202520 +0200
+@@ -45,13 +45,13 @@
+ 		strBuf.CopyFrom (res);
+ 		return string (reinterpret_cast <char *> (strBuf.Ptr()));
+ #else
+-		static const char LanguageXml[] =
++		static byte LanguageXml[] =
+ 		{
+ #			include "Common/Language.xml.h"
+ 			, 0
+ 		};
+ 
+-		return string (LanguageXml);
++		return string ((const char*) LanguageXml);
+ #endif
+ 	}
+ 
+@@ -64,13 +64,13 @@
+ 		strBuf.CopyFrom (res);
+ 		return string (reinterpret_cast <char *> (strBuf.Ptr()));
+ #else
+-		static const char License[] =
++		static byte License[] =
+ 		{
+ #			include "License.txt.h"
+ 			, 0
+ 		};
+ 
+-		return string (License);
++		return string ((const char*) License);
+ #endif
+ 	}
+ 
+--- Main/Forms/PreferencesDialog.cpp	2016-05-16 17:14:47.704707908 +0200
++++ Main/Forms/PreferencesDialog.cpp	2016-05-16 17:15:56.927964437 +0200
+@@ -414,11 +414,11 @@
+ 		libExtension = wxDynamicLibrary::CanonicalizeName (L"x");
+ 
+ #ifdef TC_MACOSX
+-		extensions.push_back (make_pair (L"dylib", LangString["DLL_FILES"]));
++		extensions.push_back (make_pair (L"dylib", static_cast<const wchar_t*>(LangString["DLL_FILES"].wc_str())));
+ #endif
+ 		if (!libExtension.empty())
+ 		{
+-			extensions.push_back (make_pair (libExtension.Mid (libExtension.find (L'.') + 1), LangString["DLL_FILES"]));
++			extensions.push_back (make_pair (static_cast<const wchar_t*>(libExtension.Mid (libExtension.find (L'.') + 1).wc_str()), static_cast<const wchar_t*>(LangString["DLL_FILES"].wc_str())));
+ 			extensions.push_back (make_pair (L"*", L""));
+ 		}
+ 
+--- Main/GraphicUserInterface.cpp	2016-05-16 17:16:38.724591342 +0200
++++ Main/GraphicUserInterface.cpp	2016-05-16 17:17:09.854562653 +0200
+@@ -1445,7 +1445,7 @@
+ 	FilePath GraphicUserInterface::SelectVolumeFile (wxWindow *parent, bool saveMode, const DirectoryPath &directory) const
+ 	{
+ 		list < pair <wstring, wstring> > extensions;
+-		extensions.push_back (make_pair (L"tc", LangString["TC_VOLUMES"]));
++		extensions.push_back (make_pair (L"tc", static_cast<const wchar_t*>(LangString["TC_VOLUMES"].wc_str())));
+ 
+ 		FilePathList selFiles = Gui->SelectFiles (parent, LangString[saveMode ? "OPEN_NEW_VOLUME" : "OPEN_VOL_TITLE"], saveMode, false, extensions, directory);
+