diff --git a/pkgs/applications/office/openoffice/libreoffice.nix b/pkgs/applications/office/openoffice/libreoffice.nix
index 5fde0cfa285..10d0c3dbaf4 100644
--- a/pkgs/applications/office/openoffice/libreoffice.nix
+++ b/pkgs/applications/office/openoffice/libreoffice.nix
@@ -8,7 +8,7 @@
 , langs ? [ "en-US" "ca" "ru" "eo" "fr" "nl" "de" "en-GB" ]
 }:
 
-throw "The expression for libreoffice is still not ready"
+# throw "The expression for libreoffice is still not ready"
 
 stdenv.mkDerivation rec {
   name = "libreoffice-3.4.5.2";
diff --git a/pkgs/development/tools/misc/gdb/default.nix b/pkgs/development/tools/misc/gdb/default.nix
index cd2eb6cc02d..e9c424ccf11 100644
--- a/pkgs/development/tools/misc/gdb/default.nix
+++ b/pkgs/development/tools/misc/gdb/default.nix
@@ -14,7 +14,7 @@ let
   basename =
     if bleedingEdgeVersion
     then "gdb-7.3.20110726"
-    else "gdb-7.3.1";
+    else "gdb-7.4";
 
   # Whether (cross-)building for GNU/Hurd.  This is an approximation since
   # having `stdenv ? cross' doesn't tell us if we're building `hostDrv' and
@@ -40,7 +40,7 @@ stdenv.mkDerivation rec {
         url = "mirror://gnu/gdb/${basename}.tar.bz2";
         # md5 is provided by the annoucement page
         # http://www.gnu.org/s/gdb/download/ANNOUNCEMENT
-        md5 = "b89a5fac359c618dda97b88645ceab47";
+        md5 = "95a9a8305fed4d30a30a6dc28ff9d060";
       };
 
   # I think python is not a native input, but I leave it
@@ -75,6 +75,8 @@ stdenv.mkDerivation rec {
        rm -v $out/share/info/{standards,configure,bfd}.info
     '';
 
+  enableParallelBuilding = true;
+
   # TODO: Investigate & fix the test failures.
   doCheck = false;
 
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index d40609fee4a..41325666554 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -3154,13 +3154,11 @@ let
   uisp = callPackage ../development/tools/misc/uisp { };
 
   gdb = callPackage ../development/tools/misc/gdb {
-    readline = readline5;
     hurd = gnu.hurdCross;
     inherit (gnu) mig;
   };
 
   gdbCross = callPackage ../development/tools/misc/gdb {
-    readline = readline5;
     target = crossSystem;
   };