Merge pull request #2522 from jwiegley/ppl

Build ppl and gmp correctly for building gcc48 on darwin

pkgs/development/libraries/gmp/5.1.x.nix

@@ -15,7 +15,8 @@ stdenv.mkDerivation rec {
     # (x86), except on Solaris where some tests crash with "Memory fault".
     # See <http://hydra.nixos.org/build/2760931>, for instance.
     (stdenv.lib.optional (!stdenv.isSunOS) "--enable-fat")
-    ++ (if cxx then [ "--enable-cxx" ] else [ "--disable-cxx" ])
+    ++ (if cxx then [ "--enable-cxx" "CPPFLAGS=-fexceptions" ]
+               else [ "--disable-cxx" ])
     ++ (if stdenv.is64bit then [ "--with-pic" ] else []);
 
   doCheck = true;

pkgs/development/libraries/ppl/default.nix

@@ -13,7 +13,10 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ perl gnum4 ];
   propagatedBuildInputs = [ gmpxx ];
 
-  configureFlags = "--disable-watchdog";
+  configureFlags = [ "--disable-watchdog" "CPPFLAGS=-fexceptions" ] ++
+    stdenv.lib.optionals stdenv.isDarwin [
+      "--disable-ppl_lcdd" "--disable-ppl_lpsol" "--disable-ppl_pips"
+    ];
 
   patches = [ ./upstream-based.patch ];