diff --git a/pkgs/development/compilers/gcc/4.6/default.nix b/pkgs/development/compilers/gcc/4.6/default.nix
index 330f8a7cf8e..fad198b1f5c 100644
--- a/pkgs/development/compilers/gcc/4.6/default.nix
+++ b/pkgs/development/compilers/gcc/4.6/default.nix
@@ -170,7 +170,7 @@ let version = "4.6.4";
       "-stage-final";
     crossNameAddon = if cross != null then "-${cross.config}" + stageNameAddon else "";
 
-    bootstrap = cross == null && !stdenv.isArm && !stdenv.isMips;
+    bootstrap = cross == null && !stdenv.isArm && !stdenv.isMips && !stdenv.isDarwin;
 
 in
 
diff --git a/pkgs/development/compilers/gcc/4.8/default.nix b/pkgs/development/compilers/gcc/4.8/default.nix
index 32a43a24efd..42fd4bec2eb 100644
--- a/pkgs/development/compilers/gcc/4.8/default.nix
+++ b/pkgs/development/compilers/gcc/4.8/default.nix
@@ -70,7 +70,8 @@ let version = "4.8.5";
       # The GNAT Makefiles did not pay attention to CFLAGS_FOR_TARGET for its
       # target libraries and tools.
       ++ optional langAda ../gnat-cflags.patch
-      ++ optional langFortran ../gfortran-driving.patch;
+      ++ optional langFortran ../gfortran-driving.patch
+      ++ optional stdenv.isDarwin ../gfortran-darwin-NXConstStr.patch;
 
     javaEcj = fetchurl {
       # The `$(top_srcdir)/ecj.jar' file is automatically picked up at
@@ -197,7 +198,7 @@ let version = "4.8.5";
     stageNameAddon = if crossStageStatic then "-stage-static" else "-stage-final";
     crossNameAddon = if cross != null then "-${cross.config}" + stageNameAddon else "";
 
-    bootstrap = cross == null && !stdenv.isArm && !stdenv.isMips;
+    bootstrap = cross == null && !stdenv.isArm && !stdenv.isMips && !stdenv.isDarwin;
 
 in
 
@@ -304,15 +305,6 @@ stdenv.mkDerivation ({
     export LDFLAGS_FOR_TARGET="-Wl,-rpath,$prefix/lib/amd64 $LDFLAGS_FOR_TARGET"
     export CXXFLAGS_FOR_TARGET="-Wl,-rpath,$prefix/lib/amd64 $CXXFLAGS_FOR_TARGET"
     export CFLAGS_FOR_TARGET="-Wl,-rpath,$prefix/lib/amd64 $CFLAGS_FOR_TARGET"
-  '' + stdenv.lib.optionalString stdenv.isDarwin ''
-    if SDKROOT=$(/usr/bin/xcrun --show-sdk-path); then
-      configureFlagsArray+=(--with-native-system-header-dir=$SDKROOT/usr/include)
-      makeFlagsArray+=( \
-       CFLAGS_FOR_BUILD=-F$SDKROOT/System/Library/Frameworks \
-       CFLAGS_FOR_TARGET=-F$SDKROOT/System/Library/Frameworks \
-       FLAGS_FOR_TARGET=-F$SDKROOT/System/Library/Frameworks \
-      )
-    fi
   '';
 
   dontDisableStatic = true;
diff --git a/pkgs/development/compilers/gcc/4.9/default.nix b/pkgs/development/compilers/gcc/4.9/default.nix
index 6a9078fefce..475349ed4ba 100644
--- a/pkgs/development/compilers/gcc/4.9/default.nix
+++ b/pkgs/development/compilers/gcc/4.9/default.nix
@@ -199,7 +199,7 @@ let version = "4.9.3";
     stageNameAddon = if crossStageStatic then "-stage-static" else "-stage-final";
     crossNameAddon = if cross != null then "-${cross.config}" + stageNameAddon else "";
 
-  bootstrap = cross == null;
+  bootstrap = cross == null && !stdenv.isDarwin;
 
 in
 
@@ -307,15 +307,6 @@ stdenv.mkDerivation ({
     export LDFLAGS_FOR_TARGET="-Wl,-rpath,$prefix/lib/amd64 $LDFLAGS_FOR_TARGET"
     export CXXFLAGS_FOR_TARGET="-Wl,-rpath,$prefix/lib/amd64 $CXXFLAGS_FOR_TARGET"
     export CFLAGS_FOR_TARGET="-Wl,-rpath,$prefix/lib/amd64 $CFLAGS_FOR_TARGET"
-  '' + stdenv.lib.optionalString stdenv.isDarwin ''
-    if SDKROOT=$(/usr/bin/xcrun --show-sdk-path); then
-      configureFlagsArray+=(--with-native-system-header-dir=$SDKROOT/usr/include)
-      makeFlagsArray+=( \
-       CFLAGS_FOR_BUILD=-F$SDKROOT/System/Library/Frameworks \
-       CFLAGS_FOR_TARGET=-F$SDKROOT/System/Library/Frameworks \
-       FLAGS_FOR_TARGET=-F$SDKROOT/System/Library/Frameworks \
-      )
-    fi
   ''
   + stdenv.lib.optionalString (langJava || langGo) ''
     export lib=$out;
diff --git a/pkgs/development/compilers/gcc/5/default.nix b/pkgs/development/compilers/gcc/5/default.nix
index 9ab725e2da8..4802c3fe278 100644
--- a/pkgs/development/compilers/gcc/5/default.nix
+++ b/pkgs/development/compilers/gcc/5/default.nix
@@ -199,7 +199,7 @@ let version = "5.4.0";
     stageNameAddon = if crossStageStatic then "-stage-static" else "-stage-final";
     crossNameAddon = if cross != null then "-${cross.config}" + stageNameAddon else "";
 
-  bootstrap = cross == null;
+  bootstrap = cross == null && !stdenv.isDarwin;
 
 in
 
@@ -307,15 +307,6 @@ stdenv.mkDerivation ({
     export LDFLAGS_FOR_TARGET="-Wl,-rpath,$prefix/lib/amd64 $LDFLAGS_FOR_TARGET"
     export CXXFLAGS_FOR_TARGET="-Wl,-rpath,$prefix/lib/amd64 $CXXFLAGS_FOR_TARGET"
     export CFLAGS_FOR_TARGET="-Wl,-rpath,$prefix/lib/amd64 $CFLAGS_FOR_TARGET"
-  '' + stdenv.lib.optionalString stdenv.isDarwin ''
-    if SDKROOT=$(/usr/bin/xcrun --show-sdk-path); then
-      configureFlagsArray+=(--with-native-system-header-dir=$SDKROOT/usr/include)
-      makeFlagsArray+=( \
-       CFLAGS_FOR_BUILD=-F$SDKROOT/System/Library/Frameworks \
-       CFLAGS_FOR_TARGET=-F$SDKROOT/System/Library/Frameworks \
-       FLAGS_FOR_TARGET=-F$SDKROOT/System/Library/Frameworks \
-      )
-    fi
   '';
 
   dontDisableStatic = true;
diff --git a/pkgs/development/compilers/gcc/6/default.nix b/pkgs/development/compilers/gcc/6/default.nix
index d281488fd50..e87554c25ab 100644
--- a/pkgs/development/compilers/gcc/6/default.nix
+++ b/pkgs/development/compilers/gcc/6/default.nix
@@ -198,7 +198,7 @@ let version = "6.1.0";
     stageNameAddon = if crossStageStatic then "-stage-static" else "-stage-final";
     crossNameAddon = if cross != null then "-${cross.config}" + stageNameAddon else "";
 
-  bootstrap = cross == null;
+  bootstrap = cross == null && !stdenv.isDarwin;
 
 in
 
@@ -306,15 +306,6 @@ stdenv.mkDerivation ({
     export LDFLAGS_FOR_TARGET="-Wl,-rpath,$prefix/lib/amd64 $LDFLAGS_FOR_TARGET"
     export CXXFLAGS_FOR_TARGET="-Wl,-rpath,$prefix/lib/amd64 $CXXFLAGS_FOR_TARGET"
     export CFLAGS_FOR_TARGET="-Wl,-rpath,$prefix/lib/amd64 $CFLAGS_FOR_TARGET"
-  '' + stdenv.lib.optionalString stdenv.isDarwin ''
-    if SDKROOT=$(/usr/bin/xcrun --show-sdk-path); then
-      configureFlagsArray+=(--with-native-system-header-dir=$SDKROOT/usr/include)
-      makeFlagsArray+=( \
-       CFLAGS_FOR_BUILD=-F$SDKROOT/System/Library/Frameworks \
-       CFLAGS_FOR_TARGET=-F$SDKROOT/System/Library/Frameworks \
-       FLAGS_FOR_TARGET=-F$SDKROOT/System/Library/Frameworks \
-      )
-    fi
   '';
 
   dontDisableStatic = true;
diff --git a/pkgs/development/compilers/gcc/builder.sh b/pkgs/development/compilers/gcc/builder.sh
index 6b09cfd59ed..0371630f3f6 100644
--- a/pkgs/development/compilers/gcc/builder.sh
+++ b/pkgs/development/compilers/gcc/builder.sh
@@ -226,19 +226,21 @@ postInstall() {
     # More dependencies with the previous gcc or some libs (gccbug stores the build command line)
     rm -rf $out/bin/gccbug
 
-    # Take out the bootstrap-tools from the rpath, as it's not needed at all having $out
-    for i in $(find "$out"/libexec/gcc/*/*/* -type f -a \! -name '*.la'); do
-        PREV_RPATH=`patchelf --print-rpath "$i"`
-        NEW_RPATH=`echo "$PREV_RPATH" | sed 's,:[^:]*bootstrap-tools/lib,,g'`
-        patchelf --set-rpath "$NEW_RPATH" "$i" && echo OK
-    done
+    if type "patchelf"; then
+	# Take out the bootstrap-tools from the rpath, as it's not needed at all having $out
+	for i in $(find "$out"/libexec/gcc/*/*/* -type f -a \! -name '*.la'); do
+            PREV_RPATH=`patchelf --print-rpath "$i"`
+            NEW_RPATH=`echo "$PREV_RPATH" | sed 's,:[^:]*bootstrap-tools/lib,,g'`
+            patchelf --set-rpath "$NEW_RPATH" "$i" && echo OK
+	done
 
-    # For some reason the libs retain RPATH to $out
-    for i in "$lib"/lib/{libtsan,libasan,libubsan}.so.*.*.*; do
-        PREV_RPATH=`patchelf --print-rpath "$i"`
-        NEW_RPATH=`echo "$PREV_RPATH" | sed "s,:${out}[^:]*,,g"`
-        patchelf --set-rpath "$NEW_RPATH" "$i" && echo OK
-    done
+	# For some reason the libs retain RPATH to $out
+	for i in "$lib"/lib/{libtsan,libasan,libubsan}.so.*.*.*; do
+            PREV_RPATH=`patchelf --print-rpath "$i"`
+            NEW_RPATH=`echo "$PREV_RPATH" | sed "s,:${out}[^:]*,,g"`
+            patchelf --set-rpath "$NEW_RPATH" "$i" && echo OK
+	done
+    fi
 
     # Get rid of some "fixed" header files
     rm -rfv $out/lib/gcc/*/*/include-fixed/{root,linux}
diff --git a/pkgs/development/libraries/json-glib/default.nix b/pkgs/development/libraries/json-glib/default.nix
index 5cfafc8e69a..99dcb377620 100644
--- a/pkgs/development/libraries/json-glib/default.nix
+++ b/pkgs/development/libraries/json-glib/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, glib, pkgconfig, gobjectIntrospection, dbus }:
+{ stdenv, fetchurl, glib, pkgconfig, gobjectIntrospection, dbus, libintlOrEmpty }:
 
 stdenv.mkDerivation rec {
   name = "json-glib-${minVer}.0";
@@ -13,6 +13,9 @@ stdenv.mkDerivation rec {
 
   propagatedBuildInputs = [ glib gobjectIntrospection ];
   nativeBuildInputs = [ pkgconfig ];
+  buildInputs = libintlOrEmpty;
+
+  NIX_LDFLAGS = stdenv.lib.optionalString stdenv.isDarwin "-lintl";
 
   meta = with stdenv.lib; {
     homepage = http://live.gnome.org/JsonGlib;