Merge some Master PRs into staging

No native hashes should be changed

pkgs/development/compilers/gcc/4.5/default.nix

@@ -20,7 +20,7 @@
 , enableMultilib ? false
 , name ? "gcc"
 , libcCross ? null
-, crossStageStatic ? true
+, crossStageStatic ? false
 , gnat ? null
 , libpthread ? null, libpthreadCross ? null  # required for GNU/Hurd
 , stripped ? true
@@ -213,7 +213,9 @@ stdenv.mkDerivation ({
         ''
     else null;
 
-  inherit noSysDirs profiledCompiler staticCompiler langJava crossStageStatic
+  # TODO(@Ericson2314): Make passthru instead. Weird to avoid mass rebuild,
+  crossStageStatic = targetPlatform == hostPlatform || crossStageStatic;
+  inherit noSysDirs profiledCompiler staticCompiler langJava
     libcCross crossMingw;
 
   nativeBuildInputs = [ texinfo which gettext ]

pkgs/development/compilers/gcc/4.8/default.nix

@@ -26,7 +26,7 @@
 , enablePlugin ? true             # whether to support user-supplied plug-ins
 , name ? "gcc"
 , libcCross ? null
-, crossStageStatic ? true
+, crossStageStatic ? false
 , gnat ? null
 , libpthread ? null, libpthreadCross ? null  # required for GNU/Hurd
 , stripped ? true
@@ -284,7 +284,9 @@ stdenv.mkDerivation ({
         ''
     else null;
 
-  inherit noSysDirs staticCompiler langJava crossStageStatic
+  # TODO(@Ericson2314): Make passthru instead. Weird to avoid mass rebuild,
+  crossStageStatic = targetPlatform == hostPlatform || crossStageStatic;
+  inherit noSysDirs staticCompiler langJava
     libcCross crossMingw;
 
   nativeBuildInputs = [ texinfo which gettext ]

pkgs/development/compilers/gcc/4.9/default.nix

@@ -26,7 +26,7 @@
 , enablePlugin ? true             # whether to support user-supplied plug-ins
 , name ? "gcc"
 , libcCross ? null
-, crossStageStatic ? true
+, crossStageStatic ? false
 , gnat ? null
 , libpthread ? null, libpthreadCross ? null  # required for GNU/Hurd
 , stripped ? true
@@ -280,7 +280,9 @@ stdenv.mkDerivation ({
         ''
     else null;
 
-  inherit noSysDirs staticCompiler langJava crossStageStatic
+  # TODO(@Ericson2314): Make passthru instead. Weird to avoid mass rebuild,
+  crossStageStatic = targetPlatform == hostPlatform || crossStageStatic;
+  inherit noSysDirs staticCompiler langJava
     libcCross crossMingw;
 
   nativeBuildInputs = [ texinfo which gettext ]

pkgs/development/compilers/gcc/5/default.nix

@@ -26,7 +26,7 @@
 , enablePlugin ? true             # whether to support user-supplied plug-ins
 , name ? "gcc"
 , libcCross ? null
-, crossStageStatic ? true
+, crossStageStatic ? false
 , gnat ? null
 , libpthread ? null, libpthreadCross ? null  # required for GNU/Hurd
 , stripped ? true
@@ -298,7 +298,9 @@ stdenv.mkDerivation ({
         ''
     else null;
 
-  inherit noSysDirs staticCompiler langJava crossStageStatic
+  # TODO(@Ericson2314): Make passthru instead. Weird to avoid mass rebuild,
+  crossStageStatic = targetPlatform == hostPlatform || crossStageStatic;
+  inherit noSysDirs staticCompiler langJava
     libcCross crossMingw;
 
   nativeBuildInputs = [ texinfo which gettext ]

pkgs/development/compilers/gcc/6/default.nix

@@ -26,7 +26,7 @@
 , enablePlugin ? true             # whether to support user-supplied plug-ins
 , name ? "gcc"
 , libcCross ? null
-, crossStageStatic ? true
+, crossStageStatic ? false
 , gnat ? null
 , libpthread ? null, libpthreadCross ? null  # required for GNU/Hurd
 , stripped ? true
@@ -292,7 +292,9 @@ stdenv.mkDerivation ({
         ''
     else null;
 
-  inherit noSysDirs staticCompiler langJava crossStageStatic
+  # TODO(@Ericson2314): Make passthru instead. Weird to avoid mass rebuild,
+  crossStageStatic = targetPlatform == hostPlatform || crossStageStatic;
+  inherit noSysDirs staticCompiler langJava
     libcCross crossMingw;
 
   nativeBuildInputs = [ texinfo which gettext ]

pkgs/development/compilers/gcc/7/default.nix

@@ -26,7 +26,7 @@
 , enablePlugin ? true             # whether to support user-supplied plug-ins
 , name ? "gcc"
 , libcCross ? null
-, crossStageStatic ? true
+, crossStageStatic ? false
 , gnat ? null
 , libpthread ? null, libpthreadCross ? null  # required for GNU/Hurd
 , stripped ? true
@@ -294,7 +294,9 @@ stdenv.mkDerivation ({
         ''
     else null;
 
-  inherit noSysDirs staticCompiler langJava crossStageStatic
+  # TODO(@Ericson2314): Make passthru instead. Weird to avoid mass rebuild,
+  crossStageStatic = targetPlatform == hostPlatform || crossStageStatic;
+  inherit noSysDirs staticCompiler langJava
     libcCross crossMingw;
 
   nativeBuildInputs = [ texinfo which gettext ]

pkgs/development/compilers/gcc/snapshot/default.nix

@@ -26,7 +26,7 @@
 , enablePlugin ? true             # whether to support user-supplied plug-ins
 , name ? "gcc"
 , libcCross ? null
-, crossStageStatic ? true
+, crossStageStatic ? false
 , gnat ? null
 , libpthread ? null, libpthreadCross ? null  # required for GNU/Hurd
 , stripped ? true
@@ -281,7 +281,9 @@ stdenv.mkDerivation ({
         ''
     else null;
 
-  inherit noSysDirs staticCompiler langJava crossStageStatic
+  # TODO(@Ericson2314): Make passthru instead. Weird to avoid mass rebuild,
+  crossStageStatic = targetPlatform == hostPlatform || crossStageStatic;
+  inherit noSysDirs staticCompiler langJava
     libcCross crossMingw;
 
   nativeBuildInputs = [ texinfo which gettext ]

pkgs/os-specific/gnu/default.nix

@@ -2,7 +2,7 @@
 
 args@{ fetchgit, stdenv, autoconf, automake, automake111x, libtool
 , texinfo, glibcCross, hurdPartedCross, libuuid, samba
-, gccCrossStageStatic, gccCrossStageFinal
+, gccCrossStageStatic, gcc
 , forceSystem, newScope, platform, config
 , targetPlatform, buildPlatform
 , overrides ? {}
@@ -28,7 +28,7 @@ let
       automake = automake111x;
       headersOnly = false;
       cross = assert targetPlatform != buildPlatform; targetPlatform;
-      gccCross = gccCrossStageFinal;
+      gccCross = gcc;
     };
 
     hurdCrossIntermediate = forcedNativePackages.callPackage ./hurd {

pkgs/stdenv/adapters.nix

@@ -59,17 +59,18 @@ rec {
   makeStdenvCross = { stdenv
                     , cc
                     , buildPlatform, hostPlatform, targetPlatform
+                    , # Prior overrides are surely not valid as packages built
+                      # with this run on a different platform, so disable by
+                      # default.
+                      overrides ? _: _: {}
                     } @ overrideArgs: let
     stdenv = overrideArgs.stdenv.override {
       inherit
         buildPlatform hostPlatform targetPlatform
-        cc;
+        cc overrides;
 
       allowedRequisites = null;
-
+      extraBuildInputs = [ ]; # Old ones run on wrong platform
-      # Overrides are surely not valid as packages built with this run on a
-      # different platform.
-      overrides = _: _: {};
     };
   in stdenv // {
     mkDerivation =
@@ -105,7 +106,7 @@ rec {
               # without proper `file` command, libtool sometimes fails
               # to recognize 64-bit DLLs
             ++ stdenv.lib.optional (hostPlatform.config == "x86_64-w64-mingw32") pkgs.file
-            ++ stdenv.lib.optional (hostPlatform.config == "aarch64-linux-gnu") pkgs.updateAutotoolsGnuConfigScriptsHook
+            ++ stdenv.lib.optional hostPlatform.isAarch64 pkgs.updateAutotoolsGnuConfigScriptsHook
             ;
 
           # Cross-linking dynamic libraries, every buildInput should

pkgs/stdenv/cross/default.nix

@@ -35,7 +35,7 @@ in bootStages ++ [
       targetPlatform = crossSystem;
       cc = if crossSystem.useiOSCross or false
            then buildPackages.darwin.ios-cross
-           else buildPackages.gccCrossStageFinal;
+           else buildPackages.gcc;
     };
   })
 

pkgs/stdenv/linux/default.nix

@@ -219,7 +219,7 @@ in
     };
     extraNativeBuildInputs = [ prevStage.patchelf prevStage.paxctl ] ++
       # Many tarballs come with obsolete config.sub/config.guess that don't recognize aarch64.
-      lib.optional (system == "aarch64-linux") prevStage.updateAutotoolsGnuConfigScriptsHook;
+      lib.optional localSystem.isAarch64 prevStage.updateAutotoolsGnuConfigScriptsHook;
   })
 
 
@@ -251,7 +251,7 @@ in
     };
     extraNativeBuildInputs = [ prevStage.patchelf prevStage.xz ] ++
       # Many tarballs come with obsolete config.sub/config.guess that don't recognize aarch64.
-      lib.optional (system == "aarch64-linux") prevStage.updateAutotoolsGnuConfigScriptsHook;
+      lib.optional localSystem.isAarch64 prevStage.updateAutotoolsGnuConfigScriptsHook;
   })
 
   # Construct the final stdenv.  It uses the Glibc and GCC, and adds
@@ -281,7 +281,7 @@ in
 
       extraNativeBuildInputs = [ prevStage.patchelf prevStage.paxctl ] ++
         # Many tarballs come with obsolete config.sub/config.guess that don't recognize aarch64.
-        lib.optional (system == "aarch64-linux") prevStage.updateAutotoolsGnuConfigScriptsHook;
+        lib.optional localSystem.isAarch64 prevStage.updateAutotoolsGnuConfigScriptsHook;
 
       cc = prevStage.gcc;
 
@@ -312,7 +312,7 @@ in
             glibc.out glibc.dev glibc.bin/*propagated from .dev*/ linuxHeaders
             gcc gcc.cc gcc.cc.lib gcc.expand-response-params
           ]
-          ++ lib.optionals (system == "aarch64-linux")
+          ++ lib.optionals localSystem.isAarch64
             [ prevStage.updateAutotoolsGnuConfigScriptsHook prevStage.gnu-config ];
 
       overrides = self: super: {

pkgs/top-level/all-packages.nix

@@ -5381,6 +5381,7 @@ with pkgs;
   gambit = callPackage ../development/compilers/gambit { };
   gerbil = callPackage ../development/compilers/gerbil { };
 
+  gccFun = callPackage ../development/compilers/gcc/6;
   gcc = gcc6;
   gcc-unwrapped = gcc.cc;
 
@@ -5429,6 +5430,8 @@ with pkgs;
     cc = buildPackages.gccCrossStageStatic;
   };
 
+  # The GCC used to build libc for the target platform. Normal gccs will be
+  # built with, and use, that cross-compiled libc.
   gccCrossStageStatic = assert targetPlatform != buildPlatform; let
     libcCross1 =
       if targetPlatform.libc == "msvcrt" then __targetPackages.windows.mingw_w64_headers
@@ -5436,12 +5439,18 @@ with pkgs;
       else null;
     in wrapCCWith {
       name = "gcc-cross-wrapper";
-      cc = gcc.cc.override {
+      cc = gccFun {
+        # copy-pasted
+        inherit noSysDirs;
+        # PGO seems to speed up compilation by gcc by ~10%, see #445 discussion
+        profiledCompiler = with stdenv; (!isDarwin && (isi686 || isx86_64));
+        isl = if !stdenv.isDarwin then isl_0_14 else null;
+
+        # just for stage static
         crossStageStatic = true;
         langCC = false;
         libcCross = libcCross1;
         enableShared = false;
-        # Why is this needed?
       };
       libc = libcCross1;
   };
@@ -5453,14 +5462,6 @@ with pkgs;
     libc = windows.mingw_headers2;
   };
 
-  gccCrossStageFinal = assert targetPlatform != buildPlatform; wrapCCWith {
-    name = "gcc-cross-wrapper";
-    cc = gcc.cc.override {
-      crossStageStatic = false;
-    };
-    libc = libcCross;
-  };
-
   gcc45 = lowPrio (wrapCC (callPackage ../development/compilers/gcc/4.5 {
     inherit noSysDirs;
     texinfo = texinfo4;
@@ -6225,8 +6226,9 @@ with pkgs;
   ccWrapperFun = callPackage ../build-support/cc-wrapper;
 
   wrapCC = cc: wrapCCWith {
+    name = lib.optionalString (targetPlatform != hostPlatform) "gcc-cross-wrapper";
     inherit cc;
-    inherit (stdenv.cc) libc;
+    libc = if targetPlatform != hostPlatform then libcCross else stdenv.cc.libc;
   };
   # legacy version, used for gnat bootstrapping
   wrapGCC-old = baseGCC: callPackage ../build-support/gcc-wrapper-old {

pkgs/top-level/release-cross.nix

@@ -19,7 +19,7 @@ let
   };
 
   gnuCommon = lib.recursiveUpdate common {
-    buildPackages.gccCrossStageFinal = nativePlatforms;
+    buildPackages.gcc = nativePlatforms;
     coreutils = nativePlatforms;
   };