Merge some merged cross-compilation PRs into into staging

doc/stdenv.xml

@@ -640,6 +640,16 @@ script) if it exists.</para>
     true.</para></listitem>
   </varlistentry>
 
+  <varlistentry>
+    <term><varname>configurePlatforms</varname></term>
+    <listitem><para>
+      By default, when cross compiling, the configure script has <option>--build=...</option> and <option>--host=...</option> passed.
+      Packages can instead pass <literal>[ "build" "host" "target" ]</literal> or a subset to control exactly which platform flags are passed.
+      Compilers and other tools should use this to also pass the target platform, for example.
+      Note eventually these will be passed when in native builds too, to improve determinism: build-time guessing, as is done today, is a risk of impurity.
+    </para></listitem>
+  </varlistentry>
+
   <varlistentry>
     <term><varname>preConfigure</varname></term>
     <listitem><para>Hook executed at the start of the configure

pkgs/applications/audio/mpg123/default.nix

@@ -1,4 +1,7 @@
-{stdenv, fetchurl, alsaLib }:
+{ stdenv
+, fetchurl, alsaLib
+, buildPlatform, hostPlatform
+}:
 
 stdenv.mkDerivation rec {
   name = "mpg123-1.23.8";
@@ -10,10 +13,8 @@ stdenv.mkDerivation rec {
 
   buildInputs = stdenv.lib.optional (!stdenv.isDarwin) alsaLib;
 
-  crossAttrs = {
+  ${if buildPlatform != hostPlatform then "configureFlags" else null} =
-    configureFlags = if stdenv.cross ? mpg123 then
+    stdenv.lib.optional (hostPlatform ? mpg123) "--with-cpu=${hostPlatform.mpg123.cpu}";
-      "--with-cpu=${stdenv.cross.mpg123.cpu}" else "";
-  };
 
   meta = {
     description = "Fast console MPEG Audio Player and decoder library";

pkgs/applications/editors/ed/default.nix

@@ -1,4 +1,6 @@
-{ fetchurl, stdenv }:
+{ stdenv, fetchurl
+, buildPlatform, hostPlatform
+}:
 
 stdenv.mkDerivation rec {
   name = "ed-${version}";
@@ -28,11 +30,12 @@ stdenv.mkDerivation rec {
        make: *** [check] Error 127
 
     */
-  doCheck = !stdenv.isDarwin;
+  doCheck = !(hostPlatform.isDarwin || hostPlatform != buildPlatform);
 
-  crossAttrs = {
+  configureFlags = if hostPlatform == buildPlatform then null else [
-    compileFlags = [ "CC=${stdenv.cross.config}-gcc" ];
+    "--exec-prefix=${stdenv.cc.prefix}"
-  };
+    "CC=${stdenv.cc.prefix}cc"
+  ];
 
   meta = {
     description = "An implementation of the standard Unix editor";

pkgs/applications/editors/vim/default.nix

@@ -6,7 +6,9 @@
     sha256 = "18ifhv5q9prd175q3vxbqf6qyvkk6bc7d2lhqdk0q78i68kv9y0c";
   }
 # apple frameworks
-, Carbon, Cocoa }:
+, Carbon, Cocoa
+, buildPlatform, hostPlatform
+}:
 
 let
   common = callPackage ./common.nix {};
@@ -17,12 +19,26 @@ stdenv.mkDerivation rec {
   inherit (common) version src postPatch hardeningDisable enableParallelBuilding meta;
 
   buildInputs = [ ncurses pkgconfig ]
-    ++ stdenv.lib.optionals stdenv.isDarwin [ Carbon Cocoa ];
+    ++ stdenv.lib.optionals hostPlatform.isDarwin [ Carbon Cocoa ];
   nativeBuildInputs = [ gettext ];
 
   configureFlags = [
     "--enable-multibyte"
     "--enable-nls"
+  ] ++ stdenv.lib.optionals (hostPlatform != buildPlatform) [
+    "vim_cv_toupper_broken=no"
+    "--with-tlib=ncurses"
+    "vim_cv_terminfo=yes"
+    "vim_cv_tty_group=tty"
+    "vim_cv_tty_mode=0660"
+    "vim_cv_getcwd_broken=no"
+    "vim_cv_stat_ignores_slash=yes"
+    "ac_cv_sizeof_int=4"
+    "vim_cv_memmove_handles_overlap=yes"
+    "vim_cv_memmove_handles_overlap=yes"
+
+    # TODO(@Ericson2314): wont' be needed soon.
+    "STRIP=${hostPlatform.config}-strip"
   ];
 
   postInstall = ''
@@ -31,22 +47,6 @@ stdenv.mkDerivation rec {
     cp "${vimrc}" $out/share/vim/vimrc
   '';
 
-  crossAttrs = {
-    configureFlags = [
-      "vim_cv_toupper_broken=no"
-      "--with-tlib=ncurses"
-      "vim_cv_terminfo=yes"
-      "vim_cv_tty_group=tty"
-      "vim_cv_tty_mode=0660"
-      "vim_cv_getcwd_broken=no"
-      "vim_cv_stat_ignores_slash=yes"
-      "ac_cv_sizeof_int=4"
-      "vim_cv_memmove_handles_overlap=yes"
-      "vim_cv_memmove_handles_overlap=yes"
-      "STRIP=${stdenv.cross.config}-strip"
-    ];
-  };
-
   __impureHostDeps = [ "/dev/ptmx" ];
 
   # To fix the trouble in vim73, that it cannot cross-build with this patch

pkgs/applications/networking/browsers/lynx/default.nix

@@ -1,5 +1,7 @@
-{ stdenv, fetchurl, ncurses, gzip, pkgconfig
+{ stdenv, buildPackages
+, fetchurl, pkgconfig, ncurses, gzip
 , sslSupport ? true, openssl ? null
+, buildPlatform, hostPlatform
 }:
 
 assert sslSupport -> openssl != null;
@@ -15,7 +17,9 @@ stdenv.mkDerivation rec {
 
   configureFlags = [ "--enable-widec" ] ++ stdenv.lib.optional sslSupport "--with-ssl";
 
-  nativeBuildInputs = stdenv.lib.optional sslSupport pkgconfig;
+  nativeBuildInputs = stdenv.lib.optional sslSupport pkgconfig
+    ++ stdenv.lib.optional (hostPlatform != buildPlatform) buildPackages.stdenv.cc;
+
   buildInputs = [ ncurses gzip ] ++ stdenv.lib.optional sslSupport openssl.dev;
 
   meta = with stdenv.lib; {

pkgs/applications/video/mplayer/default.nix

@@ -25,6 +25,7 @@
 , libjpegSupport ? true, libjpeg ? null
 , useUnfreeCodecs ? false
 , darwin ? null
+, hostPlatform
 }:
 
 assert fontconfigSupport -> (fontconfig != null);
@@ -185,13 +186,14 @@ stdenv.mkDerivation rec {
     '';
 
   crossAttrs = {
-    dontSetConfigureCross = true;
+    configurePlatforms = [];
     # Some things (vidix) are nanonote specific. Once someone cares, we can make options from them.
+    # Note, the `target` vs `host` confusion is intensional.
     preConfigure = ''
       configureFlags="`echo $configureFlags |
         sed -e 's/--codecsdir[^ ]\+//' \
         -e 's/--enable-runtime-cpudetection//' `"
-      configureFlags="$configureFlags --target=${stdenv.cross.arch}-linux
+      configureFlags="$configureFlags --target=${hostPlatform.arch}-linux
         --enable-cross-compile --cc=$crossConfig-gcc --as=$crossConfig-as
         --disable-vidix-pcidb --with-vidix-drivers=no --host-cc=gcc"
     '';

pkgs/applications/video/omxplayer/default.nix

@@ -44,7 +44,7 @@ let
     enableParallelBuilding = true;
       
     crossAttrs = {
-      dontSetConfigureCross = true;
+      configurePlatforms = [];
       configureFlags = configureFlags ++ [
         "--cross-prefix=${stdenv.cross.config}-"
         "--enable-cross-compile"

pkgs/build-support/cc-wrapper/default.nix

@@ -5,11 +5,13 @@
 # script that sets up the right environment variables so that the
 # compiler and the linker just "work".
 
-{ name ? "", stdenv, nativeTools, nativeLibc, nativePrefix ? ""
+{ name ? "", stdenv, nativeTools, noLibc ? false, nativeLibc, nativePrefix ? ""
 , cc ? null, libc ? null, binutils ? null, coreutils ? null, shell ? stdenv.shell
 , zlib ? null, extraPackages ? [], extraBuildCommands ? ""
 , dyld ? null # TODO: should this be a setup-hook on dyld?
 , isGNU ? false, isClang ? cc.isClang or false, gnugrep ? null
+, hostPlatform, targetPlatform
+, runCommand ? null
 }:
 
 with stdenv.lib;
@@ -17,32 +19,113 @@ with stdenv.lib;
 assert nativeTools -> nativePrefix != "";
 assert !nativeTools ->
   cc != null && binutils != null && coreutils != null && gnugrep != null;
-assert !nativeLibc -> libc != null;
+assert !(nativeLibc && noLibc);
+assert (noLibc || nativeLibc) == (libc == null);
+
+assert targetPlatform != hostPlatform -> runCommand != null;
 
 # For ghdl (the vhdl language provider to gcc) we need zlib in the wrapper.
 assert cc.langVhdl or false -> zlib != null;
 
 let
+  # Prefix for binaries. Customarily ends with a dash separator.
+  #
+  # TODO(@Ericson2314) Make unconditional, or optional but always true by
+  # default.
+  prefix = stdenv.lib.optionalString (targetPlatform != hostPlatform)
+                                     (targetPlatform.config + "-");
 
   ccVersion = (builtins.parseDrvName cc.name).version;
   ccName = (builtins.parseDrvName cc.name).name;
 
-  libc_bin = if nativeLibc then null else getBin libc;
+  libc_bin = if libc == null then null else getBin libc;
-  libc_dev = if nativeLibc then null else getDev libc;
+  libc_dev = if libc == null then null else getDev libc;
-  libc_lib = if nativeLibc then null else getLib libc;
+  libc_lib = if libc == null then null else getLib libc;
   cc_solib = getLib cc;
   binutils_bin = if nativeTools then "" else getBin binutils;
   # The wrapper scripts use 'cat' and 'grep', so we may need coreutils.
   coreutils_bin = if nativeTools then "" else getBin coreutils;
 
-  default_cxx_stdlib_compile=optionalString (stdenv.isLinux && !(cc.isGNU or false))
+  default_cxx_stdlib_compile=optionalString (targetPlatform.isLinux && !(cc.isGNU or false))
     "-isystem $(echo -n ${cc.gcc}/include/c++/*) -isystem $(echo -n ${cc.gcc}/include/c++/*)/$(${cc.gcc}/bin/gcc -dumpmachine)";
+
+  dashlessTarget = stdenv.lib.replaceStrings ["-"] ["_"] targetPlatform.config;
+  # TODO(@Ericson2314) Make unconditional
+  infixSalt  = stdenv.lib.optionalString (targetPlatform != hostPlatform) dashlessTarget;
+  infixSalt_ = stdenv.lib.optionalString (targetPlatform != hostPlatform) (dashlessTarget + "_");
+  _infixSalt = stdenv.lib.optionalString (targetPlatform != hostPlatform) ("_" + dashlessTarget);
+
+  # We want to prefix all NIX_ flags with the target triple
+  preWrap = textFile:
+    # TODO: Do even when not cross on next mass-rebuild
+    # TODO: use @target_tripple@ for consistency
+    if targetPlatform == hostPlatform
+    then textFile
+    else runCommand "sed-nix-env-vars" {} (''
+      cp --no-preserve=mode ${textFile} $out
+
+      sed -i $out \
+        -e 's^NIX_^NIX_${infixSalt_}^g' \
+        -e 's^addCVars^addCVars${_infixSalt}^g' \
+        -e 's^\[ -z "\$crossConfig" \]^\[\[ "${builtins.toString (targetPlatform != hostPlatform)}" || -z "$crossConfig" \]\]^g'
+
+    '' + stdenv.lib.optionalString (textFile == ./setup-hook.sh) ''
+      cat << 'EOF' >> $out
+        for CMD in ar as nm objcopy ranlib strip strings size ld
+        do
+          # which is not part of stdenv, but compgen will do for now
+          if
+            PATH=$_PATH type -p ${prefix}$CMD > /dev/null
+          then
+            export ''$(echo "$CMD" | tr "[:lower:]" "[:upper:]")=${prefix}''${CMD};
+          fi
+        done
+      EOF
+
+      sed -i $out -e 's_envHooks_crossEnvHooks_g'
+    '' + ''
+
+      # NIX_ things which we don't both use and define, we revert them
+      #asymmetric=$(
+      #  for pre in "" "\\$"
+      #  do
+      #    grep -E -ho $pre'NIX_[a-zA-Z_]*' ./* | sed 's/\$//' | sort | uniq
+      #  done | sort | uniq -c | sort -nr | sed -n 's/^1 NIX_//gp')
+
+      # hard-code for now
+      asymmetric=("CXXSTDLIB_COMPILE" "CC")
+
+      # The ([^a-zA-Z_]|$) bussiness is to ensure environment variables that
+      # begin with `NIX_CC` don't also get blacklisted.
+      for var in "''${asymmetric[@]}"
+      do
+        sed -i $out -E -e "s~NIX_${infixSalt_}$var([^a-zA-Z_]|$)~NIX_$var\1~g"
+      done
+    '');
+
+  # The dynamic linker has different names on different platforms.
+  dynamicLinker =
+    if !nativeLibc then
+      (if targetPlatform.system == "i686-linux"     then "ld-linux.so.2" else
+       if targetPlatform.system == "x86_64-linux"   then "ld-linux-x86-64.so.2" else
+       # ARM with a wildcard, which can be "" or "-armhf".
+       if targetPlatform.isArm32                    then "ld-linux*.so.3" else
+       if targetPlatform.system == "aarch64-linux"  then "ld-linux-aarch64.so.1" else
+       if targetPlatform.system == "powerpc-linux"  then "ld.so.1" else
+       if targetPlatform.system == "mips64el-linux" then "ld.so.1" else
+       if targetPlatform.system == "x86_64-darwin"  then "/usr/lib/dyld" else
+       if stdenv.lib.hasSuffix "pc-gnu" targetPlatform.config then "ld.so.1" else
+       builtins.trace
+         "Don't know the name of the dynamic linker for platform ${targetPlatform.config}, so guessing instead."
+         null)
+    else "";
+
 in
 
 stdenv.mkDerivation {
-  name =
+  name = prefix
-    (if name != "" then name else ccName + "-wrapper") +
+    + (if name != "" then name else "${ccName}-wrapper")
-    (if cc != null && ccVersion != "" then "-" + ccVersion else "");
+    + (stdenv.lib.optionalString (cc != null && ccVersion != "") "-${ccVersion}");
 
   preferLocalBuild = true;
 
@@ -51,17 +134,18 @@ stdenv.mkDerivation {
 
 
   passthru = {
-    inherit libc nativeTools nativeLibc nativePrefix isGNU isClang default_cxx_stdlib_compile;
+    inherit libc nativeTools nativeLibc nativePrefix isGNU isClang default_cxx_stdlib_compile
+            prefix infixSalt infixSalt_ _infixSalt;
 
     emacsBufferSetup = pkgs: ''
       ; We should handle propagation here too
       (mapc (lambda (arg)
         (when (file-directory-p (concat arg "/include"))
-          (setenv "NIX_CFLAGS_COMPILE" (concat (getenv "NIX_CFLAGS_COMPILE") " -isystem " arg "/include")))
+          (setenv "NIX_${infixSalt_}CFLAGS_COMPILE" (concat (getenv "NIX_${infixSalt_}CFLAGS_COMPILE") " -isystem " arg "/include")))
         (when (file-directory-p (concat arg "/lib"))
-          (setenv "NIX_LDFLAGS" (concat (getenv "NIX_LDFLAGS") " -L" arg "/lib")))
+          (setenv "NIX_${infixSalt_}LDFLAGS" (concat (getenv "NIX_${infixSalt_}LDFLAGS") " -L" arg "/lib")))
         (when (file-directory-p (concat arg "/lib64"))
-          (setenv "NIX_LDFLAGS" (concat (getenv "NIX_LDFLAGS") " -L" arg "/lib64")))) '(${concatStringsSep " " (map (pkg: "\"${pkg}\"") pkgs)}))
+          (setenv "NIX_${infixSalt_}LDFLAGS" (concat (getenv "NIX_${infixSalt_}LDFLAGS") " -L" arg "/lib64")))) '(${concatStringsSep " " (map (pkg: "\"${pkg}\"") pkgs)}))
     '';
   };
 
@@ -78,7 +162,12 @@ stdenv.mkDerivation {
       }
     ''
 
-    + optionalString (!nativeLibc) (if (!stdenv.isDarwin) then ''
+      # TODO(@Ericson2314): Unify logic next hash break
+    + optionalString (libc != null) (if (targetPlatform.isDarwin) then ''
+      echo $dynamicLinker > $out/nix-support/dynamic-linker
+
+      echo "export LD_DYLD_PATH=\"$dynamicLinker\"" >> $out/nix-support/setup-hook
+    '' else if dynamicLinker != null then ''
       dynamicLinker="${libc_lib}/lib/$dynamicLinker"
       echo $dynamicLinker > $out/nix-support/dynamic-linker
 
@@ -91,12 +180,24 @@ stdenv.mkDerivation {
       # (the *last* value counts, so ours should come first).
       echo "-dynamic-linker" $dynamicLinker > $out/nix-support/libc-ldflags-before
     '' else ''
-      echo $dynamicLinker > $out/nix-support/dynamic-linker
+      dynamicLinker=`eval 'echo $libc/lib/ld*.so.?'`
+      if [ -n "$dynamicLinker" ]; then
+        echo $dynamicLinker > $out/nix-support/dynamic-linker
 
-      echo "export LD_DYLD_PATH=\"$dynamicLinker\"" >> $out/nix-support/setup-hook
+        if [ -e ${libc_lib}/lib/32/ld-linux.so.2 ]; then
+          echo ${libc_lib}/lib/32/ld-linux.so.2 > $out/nix-support/dynamic-linker-m32
+        fi
+
+        ldflagsBefore="-dynamic-linker $dlinker"
+      fi
+
+      # The dynamic linker is passed in `ldflagsBefore' to allow
+      # explicit overrides of the dynamic linker by callers to gcc/ld
+      # (the *last* value counts, so ours should come first).
+      echo "$ldflagsBefore" > $out/nix-support/libc-ldflags-before
     '')
 
-    + optionalString (!nativeLibc) ''
+    + optionalString (libc != null) ''
       # The "-B${libc_lib}/lib/" flag is a quick hack to force gcc to link
       # against the crt1.o from our own glibc, rather than the one in
       # /usr/lib.  (This is only an issue when using an `impure'
@@ -117,7 +218,7 @@ stdenv.mkDerivation {
     ''
 
     + (if nativeTools then ''
-      ccPath="${if stdenv.isDarwin then cc else nativePrefix}/bin"
+      ccPath="${if targetPlatform.isDarwin then cc else nativePrefix}/bin"
       ldPath="${nativePrefix}/bin"
     '' else ''
       echo $cc > $out/nix-support/orig-cc
@@ -161,136 +262,114 @@ stdenv.mkDerivation {
       # Propagate the wrapped cc so that if you install the wrapper,
       # you get tools like gcov, the manpages, etc. as well (including
       # for binutils and Glibc).
-      echo ${cc} ${cc.man or ""} ${binutils_bin} ${libc_bin} > $out/nix-support/propagated-user-env-packages
+      echo ${cc} ${cc.man or ""} ${binutils_bin} ${if libc == null then "" else libc_bin} > $out/nix-support/propagated-user-env-packages
 
       echo ${toString extraPackages} > $out/nix-support/propagated-native-build-inputs
     ''
 
-    + optionalString (stdenv.isSunOS && nativePrefix != "") ''
+    + optionalString (targetPlatform.isSunOS && nativePrefix != "") ''
       # Solaris needs an additional ld wrapper.
       ldPath="${nativePrefix}/bin"
-      exec="$ldPath/ld"
+      exec="$ldPath/${prefix}ld"
-      wrap ld-solaris ${./ld-solaris-wrapper.sh}
+      wrap ld-solaris ${preWrap ./ld-solaris-wrapper.sh}
     '')
 
     + ''
       # Create a symlink to as (the assembler).  This is useful when a
       # cc-wrapper is installed in a user environment, as it ensures that
       # the right assembler is called.
-      if [ -e $ldPath/as ]; then
+      if [ -e $ldPath/${prefix}as ]; then
-        ln -s $ldPath/as $out/bin/as
+        ln -s $ldPath/${prefix}as $out/bin/${prefix}as
       fi
 
-      wrap ld ${./ld-wrapper.sh} ''${ld:-$ldPath/ld}
+      wrap ${prefix}ld ${preWrap ./ld-wrapper.sh} ''${ld:-$ldPath/${prefix}ld}
 
-      if [ -e ${binutils_bin}/bin/ld.gold ]; then
+      if [ -e ${binutils_bin}/bin/${prefix}ld.gold ]; then
-        wrap ld.gold ${./ld-wrapper.sh} ${binutils_bin}/bin/ld.gold
+        wrap ${prefix}ld.gold ${preWrap ./ld-wrapper.sh} ${binutils_bin}/bin/${prefix}ld.gold
       fi
 
       if [ -e ${binutils_bin}/bin/ld.bfd ]; then
-        wrap ld.bfd ${./ld-wrapper.sh} ${binutils_bin}/bin/ld.bfd
+        wrap ${prefix}ld.bfd ${preWrap ./ld-wrapper.sh} ${binutils_bin}/bin/${prefix}ld.bfd
       fi
 
-      export real_cc=cc
+      export real_cc=${prefix}cc
-      export real_cxx=c++
+      export real_cxx=${prefix}c++
       export default_cxx_stdlib_compile="${default_cxx_stdlib_compile}"
 
-      if [ -e $ccPath/gcc ]; then
+      if [ -e $ccPath/${prefix}gcc ]; then
-        wrap gcc ${./cc-wrapper.sh} $ccPath/gcc
+        wrap ${prefix}gcc ${preWrap ./cc-wrapper.sh} $ccPath/${prefix}gcc
-        ln -s gcc $out/bin/cc
+        ln -s ${prefix}gcc $out/bin/${prefix}cc
-        export real_cc=gcc
+        export real_cc=${prefix}gcc
-        export real_cxx=g++
+        export real_cxx=${prefix}g++
       elif [ -e $ccPath/clang ]; then
-        wrap clang ${./cc-wrapper.sh} $ccPath/clang
+        wrap ${prefix}clang ${preWrap ./cc-wrapper.sh} $ccPath/clang
-        ln -s clang $out/bin/cc
+        ln -s ${prefix}clang $out/bin/${prefix}cc
         export real_cc=clang
         export real_cxx=clang++
       fi
 
-      if [ -e $ccPath/g++ ]; then
+      if [ -e $ccPath/${prefix}g++ ]; then
-        wrap g++ ${./cc-wrapper.sh} $ccPath/g++
+        wrap ${prefix}g++ ${preWrap ./cc-wrapper.sh} $ccPath/${prefix}g++
-        ln -s g++ $out/bin/c++
+        ln -s ${prefix}g++ $out/bin/${prefix}c++
       elif [ -e $ccPath/clang++ ]; then
-        wrap clang++ ${./cc-wrapper.sh} $ccPath/clang++
+        wrap ${prefix}clang++ ${preWrap ./cc-wrapper.sh} $ccPath/clang++
-        ln -s clang++ $out/bin/c++
+        ln -s ${prefix}clang++ $out/bin/${prefix}c++
       fi
 
       if [ -e $ccPath/cpp ]; then
-        wrap cpp ${./cc-wrapper.sh} $ccPath/cpp
+        wrap ${prefix}cpp ${preWrap ./cc-wrapper.sh} $ccPath/cpp
       fi
     ''
 
     + optionalString cc.langFortran or false ''
-      wrap gfortran ${./cc-wrapper.sh} $ccPath/gfortran
+      wrap ${prefix}gfortran ${preWrap ./cc-wrapper.sh} $ccPath/${prefix}gfortran
-      ln -sv gfortran $out/bin/g77
+      ln -sv ${prefix}gfortran $out/bin/${prefix}g77
-      ln -sv gfortran $out/bin/f77
+      ln -sv ${prefix}gfortran $out/bin/${prefix}f77
     ''
 
     + optionalString cc.langJava or false ''
-      wrap gcj ${./cc-wrapper.sh} $ccPath/gcj
+      wrap ${prefix}gcj ${preWrap ./cc-wrapper.sh} $ccPath/${prefix}gcj
     ''
 
     + optionalString cc.langGo or false ''
-      wrap gccgo ${./cc-wrapper.sh} $ccPath/gccgo
+      wrap ${prefix}gccgo ${preWrap ./cc-wrapper.sh} $ccPath/${prefix}gccgo
     ''
 
     + optionalString cc.langAda or false ''
-      wrap gnatgcc ${./cc-wrapper.sh} $ccPath/gnatgcc
+      wrap ${prefix}gnatgcc ${preWrap ./cc-wrapper.sh} $ccPath/${prefix}gnatgcc
-      wrap gnatmake ${./gnat-wrapper.sh} $ccPath/gnatmake
+      wrap ${prefix}gnatmake ${preWrap ./gnat-wrapper.sh} $ccPath/${prefix}gnatmake
-      wrap gnatbind ${./gnat-wrapper.sh} $ccPath/gnatbind
+      wrap ${prefix}gnatbind ${preWrap ./gnat-wrapper.sh} $ccPath/${prefix}gnatbind
-      wrap gnatlink ${./gnatlink-wrapper.sh} $ccPath/gnatlink
+      wrap ${prefix}gnatlink ${preWrap ./gnatlink-wrapper.sh} $ccPath/${prefix}gnatlink
     ''
 
     + optionalString cc.langVhdl or false ''
-      ln -s $ccPath/ghdl $out/bin/ghdl
+      ln -s $ccPath/${prefix}ghdl $out/bin/${prefix}ghdl
     ''
 
     + ''
-      substituteAll ${./setup-hook.sh} $out/nix-support/setup-hook.tmp
+      substituteAll ${preWrap ./setup-hook.sh} $out/nix-support/setup-hook.tmp
       cat $out/nix-support/setup-hook.tmp >> $out/nix-support/setup-hook
       rm $out/nix-support/setup-hook.tmp
 
       # some linkers on some platforms don't support specific -z flags
       hardening_unsupported_flags=""
-      if [[ "$($ldPath/ld -z now 2>&1 || true)" =~ un(recognized|known)\ option ]]; then
+      if [[ "$($ldPath/${prefix}ld -z now 2>&1 || true)" =~ un(recognized|known)\ option ]]; then
         hardening_unsupported_flags+=" bindnow"
       fi
-      if [[ "$($ldPath/ld -z relro 2>&1 || true)" =~ un(recognized|known)\ option ]]; then
+      if [[ "$($ldPath/${prefix}ld -z relro 2>&1 || true)" =~ un(recognized|known)\ option ]]; then
         hardening_unsupported_flags+=" relro"
       fi
 
-      substituteAll ${./add-flags.sh} $out/nix-support/add-flags.sh
+      substituteAll ${preWrap ./add-flags.sh} $out/nix-support/add-flags.sh
-      substituteAll ${./add-hardening.sh} $out/nix-support/add-hardening.sh
+      substituteAll ${preWrap ./add-hardening.sh} $out/nix-support/add-hardening.sh
-      cp -p ${./utils.sh} $out/nix-support/utils.sh
+      cp -p ${preWrap ./utils.sh} $out/nix-support/utils.sh
     ''
     + extraBuildCommands;
 
-  # The dynamic linker has different names on different Linux platforms.
+  inherit dynamicLinker;
-  dynamicLinker =
-    if !nativeLibc then
-      (if stdenv.system == "i686-linux" then "ld-linux.so.2" else
-       if stdenv.system == "x86_64-linux" then "ld-linux-x86-64.so.2" else
-       # ARM with a wildcard, which can be "" or "-armhf".
-       if stdenv.isArm then "ld-linux*.so.3" else
-       if stdenv.system == "aarch64-linux" then "ld-linux-aarch64.so.1" else
-       if stdenv.system == "powerpc-linux" then "ld.so.1" else
-       if stdenv.system == "mips64el-linux" then "ld.so.1" else
-       if stdenv.system == "x86_64-darwin" then "/usr/lib/dyld" else
-       abort "Don't know the name of the dynamic linker for this platform.")
-    else "";
 
   crossAttrs = {
     shell = shell.crossDrv + shell.crossDrv.shellPath;
-    libc = stdenv.ccCross.libc;
-    #
-    # This is not the best way to do this. I think the reference should be
-    # the style in the gcc-cross-wrapper, but to keep a stable stdenv now I
-    # do this sufficient if/else.
-    dynamicLinker =
-      (if stdenv.cross.arch == "arm" then "ld-linux.so.3" else
-       if stdenv.cross.arch == "mips" then "ld.so.1" else
-       if stdenv.lib.hasSuffix "pc-gnu" stdenv.cross.config then "ld.so.1" else
-       abort "don't know the name of the dynamic linker for this platform");
   };
 
   meta =

pkgs/build-support/gcc-cross-wrapper/add-flags

@@ -1,5 +0,0 @@
-export NIX_CROSS_CFLAGS_COMPILE="@cflagsCompile@ $NIX_CROSS_CFLAGS_COMPILE"
-export NIX_CROSS_CFLAGS_LINK="@cflagsLink@ $NIX_CROSS_CFLAGS_LINK"
-export NIX_CROSS_LDFLAGS="@ldflags@ $NIX_CROSS_LDFLAGS"
-export NIX_CROSS_LDFLAGS_BEFORE="@ldflagsBefore@ $NIX_CROSS_LDFLAGS_BEFORE"
-export NIX_CROSS_GLIBC_FLAGS_SET=1

pkgs/build-support/gcc-cross-wrapper/builder.sh

@@ -1,120 +0,0 @@
-source $stdenv/setup
-
-mkdir $out
-mkdir $out/bin
-mkdir $out/nix-support
-
-# Force gcc to use ld-wrapper.sh when calling ld.
-cflagsCompile="-B$out/bin/"
-
-if test -z "$nativeLibc" -a -n "$libc"; then
-    cflagsCompile="$cflagsCompile -B$gccLibs/lib -B$libc/lib/ -isystem $libc_dev/include"
-    ldflags="$ldflags -L$libc/lib"
-    # Get the proper dynamic linker for glibc and uclibc. 
-    dlinker=`eval 'echo $libc/lib/ld*.so.?'`
-    if [ -n "$dlinker" ]; then
-      ldflagsBefore="-dynamic-linker $dlinker"
-
-      # The same as above, but put into files, useful for the gcc builder.
-      echo $dlinker > $out/nix-support/dynamic-linker
-      # This trick is to avoid dependencies on the cross-toolchain gcc
-      # for libgcc, libstdc++, ...
-      # -L is for libtool's .la files, and -rpath for the usual fixupPhase
-      # shrinking rpaths.
-      if [ -n "$gccLibs" ]; then
-        ldflagsBefore="$ldflagsBefore -rpath $gccLibs/lib"
-      fi
-    fi
-
-    if [ -n "$osxMinVersion" ]; then
-        cflagsCompile="$cflagsCompile -mmacosx-version-min=$osxMinVersion"
-    fi
-
-    echo "$cflagsCompile -B$libc/lib/ -idirafter $libc/include -idirafter $gcc/lib/gcc/*/*/include-fixed" > $out/nix-support/libc-cflags
-
-    echo "-L$libc/lib -rpath $libc/lib -rpath-link $libc/lib" > $out/nix-support/libc-ldflags
-
-    # The dynamic linker is passed in `ldflagsBefore' to allow
-    # explicit overrides of the dynamic linker by callers to gcc/ld
-    # (the *last* value counts, so ours should come first).
-    echo "$ldflagsBefore" > $out/nix-support/libc-ldflags-before
-fi
-
-if test -n "$nativeTools"; then
-    gccPath="$nativePrefix/bin"
-    ldPath="$nativePrefix/bin"
-else
-    ldflags="$ldflags -L$gcc/lib -L$gcc/lib64"
-    gccPath="$gcc/bin"
-    ldPath="$binutils/$crossConfig/bin"
-fi
-
-
-doSubstitute() {
-    local src=$1
-    local dst=$2
-    substitute "$src" "$dst" \
-        --subst-var "out" \
-        --subst-var "shell" \
-        --subst-var "gcc" \
-        --subst-var "gccProg" \
-        --subst-var "binutils" \
-        --subst-var "libc" \
-        --subst-var "cflagsCompile" \
-        --subst-var "cflagsLink" \
-        --subst-var "ldflags" \
-        --subst-var "ldflagsBefore" \
-        --subst-var "ldPath" \
-        --subst-var-by "ld" "$ldPath/ld"
-}
-
-
-# Make wrapper scripts around gcc, g++, and g77.  Also make symlinks
-# cc, c++, and f77.
-mkGccWrapper() {
-    local dst=$1
-    local src=$2
-
-    if ! test -f "$src"; then
-        echo "$src does not exist (skipping)"
-        return
-    fi
-
-    gccProg="$src"
-    doSubstitute "$gccWrapper" "$dst"
-    chmod +x "$dst"
-}
-
-mkGccWrapper $out/bin/$crossConfig-gcc $gccPath/$crossConfig-gcc
-#ln -s gcc $out/bin/cc
-
-mkGccWrapper $out/bin/$crossConfig-g++ $gccPath/$crossConfig-g++
-ln -s $crossConfig-g++ $out/bin/$crossConfig-c++
-
-mkGccWrapper $out/bin/$crossConfig-cpp $gccPath/$crossConfig-cpp
-
-mkGccWrapper $out/bin/$crossConfig-g77 $gccPath/$crossConfig-g77
-ln -s $crossConfig-g77 $out/bin/$crossConfig-f77
-
-ln -s $binutils/bin/$crossConfig-ar $out/bin/$crossConfig-ar
-ln -s $binutils/bin/$crossConfig-as $out/bin/$crossConfig-as
-ln -s $binutils/bin/$crossConfig-nm $out/bin/$crossConfig-nm
-ln -s $binutils/bin/$crossConfig-strip $out/bin/$crossConfig-strip
-
-
-# Make a wrapper around the linker.
-doSubstitute "$ldWrapper" "$out/bin/$crossConfig-ld"
-chmod +x "$out/bin/$crossConfig-ld"
-
-
-# Emit a setup hook.  Also store the path to the original GCC and
-# Glibc.
-test -n "$gcc" && echo $gcc > $out/nix-support/orig-cc
-test -n "$libc" && echo $libc > $out/nix-support/orig-libc
-test -n "$libc_dev" && echo $libc_dev > $out/nix-support/orig-libc-dev
-
-doSubstitute "$addFlags" "$out/nix-support/add-flags"
-
-doSubstitute "$setupHook" "$out/nix-support/setup-hook"
-
-cp -p $utils $out/nix-support/utils

pkgs/build-support/gcc-cross-wrapper/default.nix

@@ -1,65 +0,0 @@
-# The Nix `gcc' stdenv.mkDerivation is not directly usable, since it doesn't
-# know where the C library and standard header files are.  Therefore
-# the compiler produced by that package cannot be installed directly
-# in a user environment and used from the command line.  This
-# stdenv.mkDerivation provides a wrapper that sets up the right environment
-# variables so that the compiler and the linker just "work".
-
-{ name ? "", stdenv, nativeTools, nativeLibc, noLibc ? false, nativePrefix ? ""
-, gcc ? null, libc ? null, binutils ? null, shell ? "", cross
-}:
-
-assert nativeTools -> nativePrefix != "";
-assert !nativeTools -> gcc != null && binutils != null;
-assert !noLibc -> (!nativeLibc -> libc != null);
-
-let
-  chosenName = if name == "" then gcc.name else name;
-  gccLibs = stdenv.mkDerivation {
-    name = chosenName + "-libs";
-    phases = [ "installPhase" ];
-    installPhase = ''
-      echo $out
-      mkdir -p "$out"
-
-      if [ -d "${gcc}/${cross.config}/lib" ]
-      then
-          cp -Rd "${gcc}/${cross.config}/lib" "$out/lib"
-          chmod -R +w "$out/lib"
-          for a in "$out/lib/"*.la; do
-              sed -i -e "s,${gcc}/${cross.config}/lib,$out/lib,g" $a
-          done
-          rm -f "$out/lib/"*.py
-      else
-          # The MinGW cross-compiler falls into this category.
-          mkdir "$out/lib"
-      fi
-    '';
-  };
-in
-stdenv.mkDerivation {
-  builder = ./builder.sh;
-  setupHook = ./setup-hook.sh;
-  gccWrapper = ./gcc-wrapper.sh;
-  ldWrapper = ./ld-wrapper.sh;
-  utils = ./utils.sh;
-  addFlags = ./add-flags;
-  inherit nativeTools nativeLibc nativePrefix gcc binutils;
-  libc = if libc ? out then libc.out else libc;
-  libc_dev = if libc ? dev then libc.dev else libc;
-  crossConfig = if cross != null then cross.config else null;
-  osxMinVersion = cross.osxMinVersion or null;
-  gccLibs = if gcc != null then gccLibs else null;
-  name = chosenName;
-  langC = if nativeTools then true else gcc.langC;
-  langCC = if nativeTools then true else gcc.langCC;
-  langF77 = if nativeTools then false else gcc ? langFortran;
-  shell = if shell == "" then stdenv.shell else shell;
-  meta = if gcc != null then gcc.meta else
-    { description = "System C compiler wrapper";
-    };
-
-  passthru = {
-    target = cross;
-  };
-}

pkgs/build-support/gcc-cross-wrapper/gcc-wrapper.sh

@@ -1,117 +0,0 @@
-#! @shell@ -e
-
-if test -n "$NIX_CC_WRAPPER_START_HOOK"; then
-    source "$NIX_CC_WRAPPER_START_HOOK"
-fi
-
-if test -z "$NIX_CROSS_GLIBC_FLAGS_SET"; then
-    source @out@/nix-support/add-flags
-fi
-
-source @out@/nix-support/utils
-
-
-# Figure out if linker flags should be passed.  GCC prints annoying
-# warnings when they are not needed.
-dontLink=0
-if test "$*" = "-v" -o -z "$*"; then
-    dontLink=1
-else
-    for i in "$@"; do
-        if test "$i" = "-c"; then
-            dontLink=1
-        elif test "$i" = "-S"; then
-            dontLink=1
-        elif test "$i" = "-E"; then
-            dontLink=1
-        elif test "$i" = "-E"; then
-            dontLink=1
-        elif test "$i" = "-M"; then
-            dontLink=1
-        elif test "$i" = "-MM"; then
-            dontLink=1
-        fi
-    done
-fi
-
-
-# Optionally filter out paths not refering to the store.
-params=("$@")
-if test "$NIX_ENFORCE_PURITY" = "1" -a -n "$NIX_STORE"; then
-    rest=()
-    n=0
-    while test $n -lt ${#params[*]}; do
-        p=${params[n]}
-        p2=${params[$((n+1))]}
-        if test "${p:0:3}" = "-L/" && badPath "${p:2}"; then
-            skip $p
-        elif test "$p" = "-L" && badPath "$p2"; then
-            n=$((n + 1)); skip $p2
-        elif test "${p:0:3}" = "-I/" && badPath "${p:2}"; then
-            skip $p
-        elif test "$p" = "-I" && badPath "$p2"; then
-            n=$((n + 1)); skip $p2
-        elif test "$p" = "-isystem" && badPath "$p2"; then
-            n=$((n + 1)); skip $p2
-        else
-            rest=("${rest[@]}" "$p")
-        fi
-        n=$((n + 1))
-    done
-    params=("${rest[@]}")
-fi
-
-
-# Add the flags for the C compiler proper.
-extraAfter=($NIX_CROSS_CFLAGS_COMPILE)
-extraBefore=()
-
-if test "$dontLink" != "1"; then
-
-    # Add the flags that should only be passed to the compiler when
-    # linking.
-    extraAfter=(${extraAfter[@]} $NIX_CROSS_CFLAGS_LINK)
-
-    # Add the flags that should be passed to the linker (and prevent
-    # `ld-wrapper' from adding NIX_CROSS_LDFLAGS again).
-    for i in $NIX_CROSS_LDFLAGS_BEFORE; do
-        if test "${i:0:3}" = "-L/"; then
-            extraBefore=(${extraBefore[@]} "$i")
-        else
-            extraBefore=(${extraBefore[@]} "-Wl,$i")
-        fi
-    done
-    for i in $NIX_CROSS_LDFLAGS; do
-        if test "${i:0:3}" = "-L/"; then
-            extraAfter=(${extraAfter[@]} "$i")
-        else
-            extraAfter=(${extraAfter[@]} "-Wl,$i")
-        fi
-    done
-    export NIX_CROSS_LDFLAGS_SET=1
-fi
-
-# Optionally print debug info.
-if test "$NIX_DEBUG" = "1"; then
-  echo "original flags to @gccProg@:" >&2
-  for i in "${params[@]}"; do
-      echo "  $i" >&2
-  done
-  echo "extraBefore flags to @gccProg@:" >&2
-  for i in ${extraBefore[@]}; do
-      echo "  $i" >&2
-  done
-  echo "extraAfter flags to @gccProg@:" >&2
-  for i in ${extraAfter[@]}; do
-      echo "  $i" >&2
-  done
-fi
-
-if test -n "$NIX_CC_WRAPPER_EXEC_HOOK"; then
-    source "$NIX_CC_WRAPPER_EXEC_HOOK"
-fi
-
-# We want gcc to call the wrapper linker, not that of binutils.
-export PATH="@ldPath@:$PATH"
-
-exec @gccProg@ ${extraBefore[@]} "${params[@]}" ${extraAfter[@]}

pkgs/build-support/gcc-cross-wrapper/ld-wrapper.sh

@@ -1,145 +0,0 @@
-#! @shell@ -e
-
-if test -n "$NIX_LD_WRAPPER_START_HOOK"; then
-    source "$NIX_LD_WRAPPER_START_HOOK"
-fi
-
-if test -z "$NIX_CROSS_GLIBC_FLAGS_SET"; then
-    source @out@/nix-support/add-flags
-fi
-
-source @out@/nix-support/utils
-
-
-# Optionally filter out paths not refering to the store.
-params=("$@")
-if test "$NIX_ENFORCE_PURITY" = "1" -a -n "$NIX_STORE" \
-        -a \( -z "$NIX_IGNORE_LD_THROUGH_GCC" -o -z "$NIX_CROSS_LDFLAGS_SET" \); then
-    rest=()
-    n=0
-    while test $n -lt ${#params[*]}; do
-        p=${params[n]}
-        p2=${params[$((n+1))]}
-        if test "${p:0:3}" = "-L/" && badPath "${p:2}"; then
-            skip $p
-        elif test "$p" = "-L" && badPath "$p2"; then
-            n=$((n + 1)); skip $p2
-        elif test "$p" = "-rpath" && badPath "$p2"; then
-            n=$((n + 1)); skip $p2
-        elif test "$p" = "-dynamic-linker" && badPath "$p2"; then
-            n=$((n + 1)); skip $p2
-        elif test "${p:0:1}" = "/" && badPath "$p"; then
-            # We cannot skip this; barf.
-            echo "impure path \`$p' used in link" >&2
-            exit 1
-        else
-            rest=("${rest[@]}" "$p")
-        fi
-        n=$((n + 1))
-    done
-    params=("${rest[@]}")
-fi
-
-
-extra=()
-extraBefore=()
-
-if test -z "$NIX_CROSS_LDFLAGS_SET"; then
-    extra=(${extra[@]} $NIX_CROSS_LDFLAGS)
-    extraBefore=(${extraBefore[@]} $NIX_CROSS_LDFLAGS_BEFORE)
-fi
-
-
-# Add all used dynamic libraries to the rpath.
-if test "$NIX_DONT_SET_RPATH" != "1"; then
-
-    # First, find all -L... switches.
-    allParams=("${params[@]}" ${extra[@]})
-    libPath=""
-    addToLibPath() {
-        local path="$1"
-        if test "${path:0:1}" != "/"; then return 0; fi
-        case "$path" in
-            *..*|*./*|*/.*|*//*)
-                local path2
-                if path2=$(readlink -f "$path"); then
-                    path="$path2"
-                fi
-                ;;
-        esac
-        case $libPath in
-            *\ $path\ *) return 0 ;;
-        esac
-        libPath="$libPath $path "
-    }
-    n=0
-    while test $n -lt ${#allParams[*]}; do
-        p=${allParams[n]}
-        p2=${allParams[$((n+1))]}
-        if test "${p:0:3}" = "-L/"; then
-            addToLibPath ${p:2}
-        elif test "$p" = "-L"; then
-            addToLibPath ${p2}
-            n=$((n + 1))
-        fi
-        n=$((n + 1))
-    done
-
-    # Second, for each -l... switch, find the directory containing the
-    # library and add it to the rpath.
-    rpath=""
-    addToRPath() {
-        # If the path is not in the store, don't add it to the rpath.
-        # This typically happens for libraries in /tmp that are later
-        # copied to $out/lib.  If not, we're screwed.
-        if test "${1:0:${#NIX_STORE}}" != "$NIX_STORE"; then return 0; fi
-        case $rpath in
-            *\ $1\ *) return 0 ;;
-        esac
-        rpath="$rpath $1 "
-    }
-    findLib() {
-        for i in $libPath; do
-            if test -f $i/lib$1.so; then
-                addToRPath $i
-            fi
-        done
-    }
-    n=0
-    while test $n -lt ${#allParams[*]}; do
-        p=${allParams[n]}
-        p2=${allParams[$((n+1))]}
-        if test "${p:0:2}" = "-l"; then
-            findLib ${p:2}
-        elif test "$p" = "-l"; then
-            # I haven't seen `-l foo', but you never know...
-            findLib ${p2}
-            n=$((n + 1))
-        fi
-        n=$((n + 1))
-    done
-
-    # Finally, add `-rpath' switches.
-    for i in $rpath; do
-        extra=(${extra[@]} -rpath $i -rpath-link $i)
-    done
-fi
-
-
-# Optionally print debug info.
-if test "$NIX_DEBUG" = "1"; then
-  echo "original flags to @ld@:" >&2
-  for i in "${params[@]}"; do
-      echo "  $i" >&2
-  done
-  echo "extra flags to @ld@:" >&2
-  for i in ${extra[@]}; do
-      echo "  $i" >&2
-  done
-fi
-
-if test -n "$NIX_LD_WRAPPER_EXEC_HOOK"; then
-    source "$NIX_LD_WRAPPER_EXEC_HOOK"
-fi
-
-exec @ld@ ${extraBefore[@]} "${params[@]}" ${extra[@]}

pkgs/build-support/gcc-cross-wrapper/setup-hook.sh

@@ -1,90 +0,0 @@
-NIX_CROSS_CFLAGS_COMPILE=""
-NIX_CROSS_LDFLAGS=""
-
-crossAddCVars () {
-    if test -d $1/include; then
-        export NIX_CROSS_CFLAGS_COMPILE="$NIX_CROSS_CFLAGS_COMPILE -I$1/include"
-    fi
-
-    if test -d $1/lib; then
-        export NIX_CROSS_LDFLAGS="$NIX_CROSS_LDFLAGS -L$1/lib -rpath-link $1/lib"
-    fi
-}
-
-crossEnvHooks+=(crossAddCVars)
-
-crossStripDirs() {
-    local dirs="$1"
-    local stripFlags="$2"
-    local dirsNew=
-
-    for d in ${dirs}; do
-        if test -d "$prefix/$d"; then
-            dirsNew="${dirsNew} $prefix/$d "
-        fi
-    done
-    dirs=${dirsNew}
-
-    if test -n "${dirs}"; then
-        header "cross stripping (with flags $stripFlags) in $dirs"
-        # libc_nonshared.a should never be stripped, or builds will break.
-        find $dirs -type f -print0 | xargs -0 ${xargsFlags:--r} $crossConfig-strip $stripFlags || true
-        stopNest
-    fi
-}
-
-crossStrip () {
-    # In cross_renaming we may rename dontCrossStrip to dontStrip, and
-    # dontStrip to dontNativeStrip.
-    # TODO: strip _only_ ELF executables, and return || fail here...
-    if test -z "$dontCrossStrip"; then
-        stripDebugList=${stripDebugList:-lib lib64 libexec bin sbin}
-        if test -n "$stripDebugList"; then
-            crossStripDirs "$stripDebugList" "${stripDebugFlags:--S}"
-        fi
-        
-        stripAllList=${stripAllList:-}
-        if test -n "$stripAllList"; then
-            crossStripDirs "$stripAllList" "${stripAllFlags:--s}"
-        fi
-    fi
-}
-
-preDistPhases=(${preDistPhases[@]} crossStrip)
-
-
-# Note: these come *after* $out in the PATH (see setup.sh).
-
-if test -n "@gcc@"; then
-    PATH=$PATH:@gcc@/bin
-fi
-
-if test -n "@binutils@"; then
-    PATH=$PATH:@binutils@/bin
-fi
-
-if test -n "@libc@"; then
-    PATH=$PATH:@libc@/bin
-    crossAddCVars @libc@
-fi
-
-if test "$dontSetConfigureCross" != "1"; then
-    configureFlags="$configureFlags --build=$system --host=$crossConfig"
-fi
-# Disabling the tests when cross compiling, as usually the tests are meant for
-# native compilations.
-doCheck=""
-
-# Don't strip foreign binaries with native "strip" tool.
-dontStrip=1
-
-# Add the output as an rpath.
-if test "$NIX_NO_SELF_RPATH" != "1"; then
-    export NIX_CROSS_LDFLAGS="-rpath $out/lib -rpath-link $out/lib $NIX_CROSS_LDFLAGS"
-    if test -n "$NIX_LIB64_IN_SELF_RPATH"; then
-        export NIX_CROSS_LDFLAGS="-rpath $out/lib64 -rpath-link $out/lib $NIX_CROSS_LDFLAGS"
-    fi
-fi
-
-export CC=${crossConfig}-gcc
-export CXX=${crossConfig}-g++

pkgs/build-support/gcc-cross-wrapper/utils.sh

@@ -1,24 +0,0 @@
-skip () {
-    if test "$NIX_DEBUG" = "1"; then
-        echo "skipping impure path $1" >&2
-    fi
-}
-
-
-# Checks whether a path is impure.  E.g., `/lib/foo.so' is impure, but
-# `/nix/store/.../lib/foo.so' isn't.
-badPath() {
-    local p=$1
-    
-    # Relative paths are okay (since they're presumably relative to
-    # the temporary build directory).
-    if test "${p:0:1}" != "/"; then return 1; fi
-    
-    # Otherwise, the path should refer to the store or some temporary
-    # directory (including the build directory).
-    test \
-        "$p" != "/dev/null" -a \
-        "${p:0:${#NIX_STORE}}" != "$NIX_STORE" -a \
-        "${p:0:4}" != "/tmp" -a \
-        "${p:0:${#NIX_BUILD_TOP}}" != "$NIX_BUILD_TOP"
-}

pkgs/build-support/gcc-wrapper-old/default.nix

@@ -61,7 +61,6 @@ stdenv.mkDerivation {
 
   crossAttrs = {
     shell = shell.crossDrv + shell.crossDrv.shellPath;
-    libc = stdenv.ccCross.libc;
     coreutils = coreutils.crossDrv;
     binutils = binutils.crossDrv;
     gcc = gcc.crossDrv;

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

@@ -283,7 +283,7 @@ stdenv.mkDerivation ({
     NM_FOR_TARGET = "${targetPlatform.config}-nm";
     CXX_FOR_TARGET = "${targetPlatform.config}-g++";
     # If we are making a cross compiler, cross != null
-    NIX_CC_CROSS = if targetPlatform == hostPlatform then "${stdenv.ccCross}" else "";
+    NIX_CC_CROSS = optionalString (targetPlatform == hostPlatform) builtins.toString stdenv.cc;
     dontStrip = true;
     configureFlags = ''
       ${if enableMultilib then "" else "--disable-multilib"}

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

@@ -401,7 +401,7 @@ stdenv.mkDerivation ({
     NM_FOR_TARGET = "${targetPlatform.config}-nm";
     CXX_FOR_TARGET = "${targetPlatform.config}-g++";
     # If we are making a cross compiler, cross != null
-    NIX_CC_CROSS = if targetPlatform == hostPlatform then "${stdenv.ccCross}" else "";
+    NIX_CC_CROSS = optionalString (targetPlatform == hostPlatform) builtins.toString stdenv.cc;
     dontStrip = true;
     configureFlags = ''
       ${if enableMultilib then "" else "--disable-multilib"}

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

@@ -407,7 +407,7 @@ stdenv.mkDerivation ({
     NM_FOR_TARGET = "${targetPlatform.config}-nm";
     CXX_FOR_TARGET = "${targetPlatform.config}-g++";
     # If we are making a cross compiler, cross != null
-    NIX_CC_CROSS = if targetPlatform == hostPlatform then "${stdenv.ccCross}" else "";
+    NIX_CC_CROSS = optionalString (targetPlatform == hostPlatform) builtins.toString stdenv.cc;
     dontStrip = true;
     configureFlags = ''
       ${if enableMultilib then "" else "--disable-multilib"}

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

@@ -35,6 +35,7 @@
 , cloog # unused; just for compat with gcc4, as we override the parameter on some places
 , darwin ? null
 , buildPlatform, hostPlatform, targetPlatform
+, buildPackages
 }:
 
 assert langJava     -> zip != null && unzip != null
@@ -312,6 +313,7 @@ stdenv.mkDerivation ({
     ++ (optionals langJava [ boehmgc zip unzip ])
     ++ (optionals javaAwtGtk ([ gtk2 libart_lgpl ] ++ xlibs))
     ++ (optionals (targetPlatform != hostPlatform) [binutils])
+    ++ (optionals (buildPlatform != hostPlatform) [buildPackages.stdenv.cc])
     ++ (optionals langAda [gnatboot])
     ++ (optionals langVhdl [gnat])
 
@@ -422,7 +424,7 @@ stdenv.mkDerivation ({
     NM_FOR_TARGET = "${targetPlatform.config}-nm";
     CXX_FOR_TARGET = "${targetPlatform.config}-g++";
     # If we are making a cross compiler, cross != null
-    NIX_CC_CROSS = if targetPlatform == hostPlatform then "${stdenv.ccCross}" else "";
+    NIX_CC_CROSS = optionalString (targetPlatform == hostPlatform) builtins.toString stdenv.cc;
     dontStrip = true;
     configureFlags = ''
       ${if enableMultilib then "" else "--disable-multilib"}
@@ -449,6 +451,8 @@ stdenv.mkDerivation ({
         )
       }
       ${if langAda then " --enable-libada" else ""}
+      --build=${buildPlatform.config}
+      --host=${hostPlatform.config}
       --target=${targetPlatform.config}
       ${xwithArch}
       ${xwithCpu}

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

@@ -404,7 +404,7 @@ stdenv.mkDerivation ({
     NM_FOR_TARGET = "${targetPlatform.config}-nm";
     CXX_FOR_TARGET = "${targetPlatform.config}-g++";
     # If we are making a cross compiler, cross != null
-    NIX_CC_CROSS = if targetPlatform == hostPlatform then "${stdenv.ccCross}" else "";
+    NIX_CC_CROSS = optionalString (targetPlatform == hostPlatform) builtins.toString stdenv.cc;
     dontStrip = true;
     configureFlags = ''
       ${if enableMultilib then "" else "--disable-multilib"}

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

@@ -405,7 +405,7 @@ stdenv.mkDerivation ({
     NM_FOR_TARGET = "${targetPlatform.config}-nm";
     CXX_FOR_TARGET = "${targetPlatform.config}-g++";
     # If we are making a cross compiler, cross != null
-    NIX_CC_CROSS = if targetPlatform == hostPlatform then "${stdenv.ccCross}" else "";
+    NIX_CC_CROSS = optionalString (targetPlatform == hostPlatform) builtins.toString stdenv.cc;
     dontStrip = true;
     configureFlags = ''
       ${if enableMultilib then "" else "--disable-multilib"}

pkgs/development/compilers/ghc/head.nix

@@ -15,8 +15,6 @@ let
   version = "8.1.20170106";
   rev = "b4f2afe70ddbd0576b4eba3f82ba1ddc52e9b3bd";
 
-  outputs = [ "out" "doc" ];
-
   commonPreConfigure =  ''
     echo ${version} >VERSION
     echo ${rev} >GIT_COMMIT_ID
@@ -77,6 +75,8 @@ in stdenv.mkDerivation (rec {
     done
   '';
 
+  outputs = [ "out" "doc" ];
+
   passthru = {
     inherit bootPkgs;
   } // stdenv.lib.optionalAttrs (targetPlatform != buildPlatform) {
@@ -101,26 +101,26 @@ in stdenv.mkDerivation (rec {
   '';
 
   configureFlags = [
-    "CC=${stdenv.ccCross}/bin/${cross.config}-cc"
+    "CC=${stdenv.cc}/bin/${cross.config}-cc"
-    "LD=${stdenv.binutils}/bin/${cross.config}-ld"
+    "LD=${stdenv.cc}/bin/${cross.config}-ld"
-    "AR=${stdenv.binutils}/bin/${cross.config}-ar"
+    "AR=${stdenv.cc}/bin/${cross.config}-ar"
-    "NM=${stdenv.binutils}/bin/${cross.config}-nm"
+    "NM=${stdenv.cc}/bin/${cross.config}-nm"
-    "RANLIB=${stdenv.binutils}/bin/${cross.config}-ranlib"
+    "RANLIB=${stdenv.cc}/bin/${cross.config}-ranlib"
     "--target=${cross.config}"
     "--enable-bootstrap-with-devel-snapshot"
   ] ++
     # fix for iOS: https://www.reddit.com/r/haskell/comments/4ttdz1/building_an_osxi386_to_iosarm64_cross_compiler/d5qvd67/
     lib.optional (cross.config or null == "aarch64-apple-darwin14") "--disable-large-address-space";
 
-  buildInputs = commonBuildInputs ++ [ stdenv.ccCross stdenv.binutils ];
+  buildInputs = commonBuildInputs;
 
-  dontSetConfigureCross = true;
+  configurePlatforms = [];
 
   passthru = {
     inherit bootPkgs cross;
 
-    cc = "${stdenv.ccCross}/bin/${cross.config}-cc";
+    cc = "${stdenv.cc}/bin/${cross.config}-cc";
 
-    ld = "${stdenv.binutils}/bin/${cross.config}-ld";
+    ld = "${stdenv.cc}/bin/${cross.config}-ld";
   };
 })

pkgs/development/compilers/rust/rustc.nix

@@ -10,6 +10,7 @@
 , targetPatches
 , targetToolchains
 , doCheck ? true
+, buildPlatform, hostPlatform
 } @ args:
 
 let
@@ -137,7 +138,8 @@ stdenv.mkDerivation {
 
   inherit doCheck;
 
-  dontSetConfigureCross = true;
+  ${if buildPlatform == hostPlatform then "dontSetConfigureCross" else null} = true;
+  ${if buildPlatform != hostPlatform then "configurePlatforms" else null} = [];
 
   # https://github.com/NixOS/nixpkgs/pull/21742#issuecomment-272305764
   # https://github.com/rust-lang/rust/issues/30181

pkgs/development/libraries/ffmpeg-full/default.nix

@@ -446,7 +446,7 @@ stdenv.mkDerivation rec {
       fi
     '';
   in {
-    dontSetConfigureCross = true;
+    configurePlatforms = [];
     configureFlags = configureFlags ++ [
       "--cross-prefix=${stdenv.cross.config}-"
       "--enable-cross-compile"

pkgs/development/libraries/ffmpeg/generic.nix

@@ -187,7 +187,7 @@ stdenv.mkDerivation rec {
       fi
     '';
   in {
-    dontSetConfigureCross = true;
+    configurePlatforms = [];
     configureFlags = configureFlags ++ [
       "--cross-prefix=${stdenv.cross.config}-"
       "--enable-cross-compile"

pkgs/development/libraries/libav/default.nix

@@ -105,7 +105,7 @@ let
     installCheckTarget = "check"; # tests need to be run *after* installation
 
     crossAttrs = {
-      dontSetConfigureCross = true;
+      configurePlatforms = [];
       configureFlags = configureFlags ++ [
         "--cross-prefix=${stdenv.cross.config}-"
         "--enable-cross-compile"

pkgs/development/libraries/libelf/cross-ar.patch

@@ -0,0 +1,11 @@
+--- a/lib/Makefile.in
++++ b/lib/Makefile.in
+@@ -27,7 +27,7 @@ installdirs = $(libdir) $(includedir) $(includedir)/libelf
+ 
+ CC = @CC@
+ LD = @LD@
+-AR = ar
++AR ?= ar
+ MV = mv -f
+ RM = rm -f
+ LN_S = @LN_S@

pkgs/development/libraries/libelf/default.nix

@@ -1,4 +1,7 @@
-{ fetchurl, stdenv, gettext, glibc }:
+{ stdenv, fetchurl
+, gettext, glibc
+, buildPlatform, hostPlatform
+}:
 
 stdenv.mkDerivation rec {
   name = "libelf-0.8.13";
@@ -8,20 +11,20 @@ stdenv.mkDerivation rec {
     sha256 = "0vf7s9dwk2xkmhb79aigqm0x0yfbw1j0b9ksm51207qwr179n6jr";
   };
 
+  # TODO(@Ericson2314) Make unconditional next hash break
+  patches = if hostPlatform == buildPlatform then null else [
+    ./cross-ar.patch
+  ];
+
   doCheck = true;
 
   # FIXME needs gcc 4.9 in bootstrap tools
   hardeningDisable = [ "stackprotector" ];
 
-  # For cross-compiling, native glibc is needed for the "gencat" program.
-  crossAttrs = {
-    nativeBuildInputs = [ gettext glibc ];
-  };
-
   # Libelf's custom NLS macros fail to determine the catalog file extension on
   # Darwin, so disable NLS for now.
   # FIXME: Eventually make Gettext a build input on all platforms.
-  configureFlags = stdenv.lib.optional stdenv.isDarwin "--disable-nls";
+  configureFlags = stdenv.lib.optional hostPlatform.isDarwin "--disable-nls";
 
   nativeBuildInputs = [ gettext ];
 

pkgs/development/libraries/libmpc/default.nix

@@ -1,4 +1,8 @@
-{ fetchurl, stdenv, gmp, mpfr }:
+{ stdenv, fetchurl
+, gmp, mpfr
+, buildPlatform, hostPlatform
+}:
+
 let
   version = "1.0.3";
 in
@@ -14,7 +18,7 @@ stdenv.mkDerivation rec {
 
   CFLAGS = "-I${gmp.dev}/include";
 
-  doCheck = true;
+  doCheck = hostPlatform == buildPlatform;
 
   # FIXME needs gcc 4.9 in bootstrap tools
   hardeningDisable = [ "stackprotector" ];

pkgs/development/libraries/libsigsegv/default.nix

@@ -1,4 +1,6 @@
-{ fetchurl, stdenv }:
+{ stdenv, fetchurl
+, buildPlatform, hostPlatform
+}:
 
 stdenv.mkDerivation rec {
   name = "libsigsegv-2.11";
@@ -8,7 +10,7 @@ stdenv.mkDerivation rec {
     sha256 = "063swdvq7mbmc1clv0rnh20grwln1zfc2qnm0sa1hivcxyr2wz6x";
   };
 
-  doCheck = true;
+  doCheck = hostPlatform == buildPlatform;
 
   meta = {
     homepage = http://www.gnu.org/software/libsigsegv/;

pkgs/development/libraries/libvpx/default.nix

@@ -148,7 +148,7 @@ stdenv.mkDerivation rec {
     isCygwin = stdenv.cross.libc == "msvcrt";
     isDarwin = stdenv.cross.libc == "libSystem";
   in {
-    dontSetConfigureCross = true;
+    configurePlatforms = [];
     configureFlags = configureFlags ++ [
       #"--extra-cflags="
       #"--extra-cxxflags="

pkgs/development/libraries/libvpx/git.nix

@@ -156,7 +156,7 @@ stdenv.mkDerivation rec {
     isCygwin = stdenv.cross.libc == "msvcrt";
     isDarwin = stdenv.cross.libc == "libSystem";
   in {
-    dontSetConfigureCross = true;
+    configurePlatforms = [];
     configureFlags = configureFlags ++ [
       #"--extra-cflags="
       #"--prefix="

pkgs/development/libraries/mpfr/default.nix

@@ -1,4 +1,6 @@
-{ stdenv, fetchurl, gmp }:
+{ stdenv, fetchurl, gmp
+, buildPlatform, hostPlatform
+}:
 
 stdenv.mkDerivation rec {
   name = "mpfr-3.1.3";
@@ -19,10 +21,10 @@ stdenv.mkDerivation rec {
   hardeningDisable = [ "stackprotector" ];
 
   configureFlags =
-    stdenv.lib.optional stdenv.isSunOS "--disable-thread-safe" ++
+    stdenv.lib.optional hostPlatform.isSunOS "--disable-thread-safe" ++
-    stdenv.lib.optional stdenv.is64bit "--with-pic";
+    stdenv.lib.optional hostPlatform.is64bit "--with-pic";
 
-  doCheck = true;
+  doCheck = hostPlatform == buildPlatform;
 
   enableParallelBuilding = true;
 

pkgs/development/libraries/pcre/default.nix

@@ -1,5 +1,7 @@
 { stdenv, fetchurl
-, windows ? null, variant ? null, pcre
+, pcre, windows ? null
+, buildPlatform, hostPlatform
+, variant ? null
 }:
 
 with stdenv.lib;
@@ -31,7 +33,9 @@ in stdenv.mkDerivation rec {
 
   patches = [ ./CVE-2017-7186.patch ];
 
-  doCheck = with stdenv; !(isCygwin || isFreeBSD);
+  buildInputs = optional (hostPlatform.libc == "msvcrt") windows.mingw_w64_pthreads;
+
+  doCheck = !(with hostPlatform; isCygwin || isFreeBSD) && hostPlatform == buildPlatform;
     # XXX: test failure on Cygwin
     # we are running out of stack on both freeBSDs on Hydra
 
@@ -42,10 +46,6 @@ in stdenv.mkDerivation rec {
     ln -sf -t "$out/lib/" '${pcre.out}'/lib/libpcre{,posix}.{so.*.*.*,*dylib}
   '';
 
-  crossAttrs = optionalAttrs (stdenv.cross.libc == "msvcrt") {
-    buildInputs = [ windows.mingw_w64_pthreads.crossDrv ];
-  };
-
   meta = {
     homepage = "http://www.pcre.org/";
     description = "A library for Perl Compatible Regular Expressions";

pkgs/development/libraries/podofo/default.nix

@@ -1,5 +1,7 @@
 { stdenv, fetchurl, cmake, zlib, freetype, libjpeg, libtiff, fontconfig
-, gcc5, openssl, libpng, lua5, pkgconfig, libidn, expat }:
+, openssl, libpng, lua5, pkgconfig, libidn, expat
+, gcc5 # TODO(@Dridus) remove this at next hash break
+}:
 
 stdenv.mkDerivation rec {
   name = "podofo-0.9.5";
@@ -11,18 +13,12 @@ stdenv.mkDerivation rec {
 
   propagatedBuildInputs = [ zlib freetype libjpeg libtiff fontconfig openssl libpng libidn expat ];
 
-  # Does Linux really need gcc5? Darwin doesn't seem to...
+  # TODO(@Dridus) remove the ++ ghc5 at next hash break
   nativeBuildInputs = [ cmake pkgconfig ] ++ stdenv.lib.optional stdenv.isLinux gcc5;
 
-  # Does Linux really need libc here? Darwin doesn't seem to...
+  # TODO(@Dridus) remove the ++ libc at next hash break
   buildInputs = [ lua5 ] ++ stdenv.lib.optional stdenv.isLinux stdenv.cc.libc;
 
-  crossAttrs = {
-    propagatedBuildInputs = [ zlib.crossDrv freetype.crossDrv libjpeg.crossDrv
-      libtiff.crossDrv fontconfig.crossDrv openssl.crossDrv libpng.crossDrv
-      lua5.crossDrv stdenv.ccCross.libc ];
-  };
-
   cmakeFlags = "-DPODOFO_BUILD_SHARED=ON -DPODOFO_BUILD_STATIC=OFF";
 
   meta = {

pkgs/development/libraries/qt-4.x/4.8/default.nix

@@ -209,7 +209,7 @@ stdenv.mkDerivation rec {
     postInstall = ''
       cp bin/qmake* $out/bin
     '';
-    dontSetConfigureCross = true;
+    configurePlatforms = [];
     dontStrip = true;
   } // optionalAttrs isMingw {
     propagatedBuildInputs = [ ];

pkgs/development/libraries/zlib/default.nix

@@ -1,4 +1,8 @@
-{ stdenv, fetchurl, static ? false }:
+{ stdenv
+, fetchurl
+, buildPlatform, hostPlatform
+, static ? false
+}:
 
 let version = "1.2.11"; in
 
@@ -24,7 +28,9 @@ stdenv.mkDerivation rec {
   setOutputFlags = false;
   outputDoc = "dev"; # single tiny man3 page
 
-  preConfigure = ''
+  # TODO(@Dridus) CC set by cc-wrapper setup-hook, so just empty out the preConfigure script when cross building, but leave the old incorrect script when not
+  # cross building to avoid hash breakage. Once hash breakage is acceptable, remove preConfigure entirely.
+  preConfigure = stdenv.lib.optionalString (hostPlatform == buildPlatform) ''
     if test -n "$crossConfig"; then
       export CC=$crossConfig-gcc
     fi
@@ -53,7 +59,7 @@ stdenv.mkDerivation rec {
 
   crossAttrs = {
     dontStrip = static;
-    dontSetConfigureCross = true;
+    configurePlatforms = [];
   } // stdenv.lib.optionalAttrs (stdenv.cross.libc == "msvcrt") {
     installFlags = [
       "BINARY_PATH=$(out)/bin"

pkgs/development/tools/misc/binutils/default.nix

@@ -50,7 +50,8 @@ stdenv.mkDerivation rec {
     ++ [ "info" ]
     ++ optional (targetPlatform == hostPlatform) "dev";
 
-  nativeBuildInputs = [ bison ];
+  nativeBuildInputs = [ bison ]
+    ++ optional (hostPlatform != buildPlatform) buildPackages.stdenv.cc;
   buildInputs = [ zlib ];
 
   inherit noSysDirs;

pkgs/os-specific/darwin/ios-cross/default.nix

@@ -6,7 +6,7 @@
 , stdenv
 , coreutils
 , gnugrep
-, targetPlatform
+, hostPlatform, targetPlatform
 }:
 
 /* As of this writing, known-good prefix/arch/simulator triples:
@@ -28,14 +28,14 @@ let
 
   sdk = "/Applications/Xcode.app/Contents/Developer/Platforms/iPhone${sdkType}.platform/Developer/SDKs/iPhone${sdkType}${sdkVer}.sdk";
 
-  /* TODO: Properly integrate with gcc-cross-wrapper */
+in (import ../../../build-support/cc-wrapper {
-  wrapper = import ../../../build-support/cc-wrapper {
+    inherit stdenv coreutils gnugrep runCommand;
-    inherit stdenv coreutils gnugrep;
     nativeTools = false;
     nativeLibc = false;
     inherit binutils;
     libc = runCommand "empty-libc" {} "mkdir -p $out/{lib,include}";
-    cc = clang;
+    inherit (clang) cc;
+    inherit hostPlatform targetPlatform;
     extraBuildCommands = ''
       if ! [ -d ${sdk} ]; then
           echo "You must have ${sdkVer} of the iPhone${sdkType} sdk installed at ${sdk}" >&2
@@ -49,27 +49,6 @@ let
       # Purposefully overwrite libc-ldflags-before, cctools ld doesn't know dynamic-linker and cc-wrapper doesn't do cross-compilation well enough to adjust
       echo "-arch ${arch} -L${sdk}/usr/lib ${lib.optionalString simulator "-L${sdk}/usr/lib/system "}-i${if simulator then "os_simulator" else "phoneos"}_version_min 7.0.0" > $out/nix-support/libc-ldflags-before
     '';
-  };
+  }) // {
-in {
+    inherit sdkType sdkVer sdk;
-  cc = runCommand "${prefix}-cc" { passthru = { inherit sdkType sdkVer sdk; }; } ''
+  }
-    mkdir -p $out/bin
-    ln -sv ${wrapper}/bin/clang $out/bin/${prefix}-cc
-    mkdir -p $out/nix-support
-    echo ${llvm} > $out/nix-support/propagated-native-build-inputs
-    cat > $out/nix-support/setup-hook <<EOF
-    if test "\$dontSetConfigureCross" != "1"; then
-        configureFlags="\$configureFlags --host=${prefix}"
-    fi
-    EOF
-    fixupPhase
-  '';
-
-  binutils = runCommand "${prefix}-binutils" {} ''
-    mkdir -p $out/bin
-    ln -sv ${wrapper}/bin/ld $out/bin/${prefix}-ld
-    for prog in ar nm ranlib; do
-      ln -s ${binutils}/bin/$prog $out/bin/${prefix}-$prog
-    done
-    fixupPhase
-  '';
-}

pkgs/os-specific/linux/busybox/default.nix

@@ -1,8 +1,9 @@
-{ stdenv, lib, fetchurl, glibc, musl
+{ stdenv, lib, buildPackages, fetchurl
 , enableStatic ? false
 , enableMinimal ? false
-, useMusl ? false
+, useMusl ? false, musl
 , extraConfig ? ""
+, buildPlatform, hostPlatform
 }:
 
 let
@@ -71,20 +72,16 @@ stdenv.mkDerivation rec {
   '';
 
   postConfigure = lib.optionalString useMusl ''
-    makeFlagsArray+=("CC=gcc -isystem ${musl}/include -B${musl}/lib -L${musl}/lib")
+    makeFlagsArray+=("CC=${stdenv.cc.prefix}gcc -isystem ${musl}/include -B${musl}/lib -L${musl}/lib")
   '';
 
+  nativeBuildInputs = lib.optional (hostPlatform != buildPlatform) buildPackages.stdenv.cc;
+
   buildInputs = lib.optionals (enableStatic && !useMusl) [ stdenv.cc.libc stdenv.cc.libc.static ];
 
-  crossAttrs = {
+  extraCrossConfig = if hostPlatform == buildPlatform then null else ''
-    extraCrossConfig = ''
+    CONFIG_CROSS_COMPILER_PREFIX "${stdenv.cc.prefix}"
-      CONFIG_CROSS_COMPILER_PREFIX "${stdenv.cross.config}-"
+  '';
-    '';
-
-    postConfigure = stdenv.lib.optionalString useMusl ''
-      makeFlagsArray+=("CC=$crossConfig-gcc -isystem ${musl.crossDrv}/include -B${musl.crossDrv}/lib -L${musl.crossDrv}/lib")
-    '';
-  };
 
   enableParallelBuilding = true;
 

pkgs/os-specific/windows/mingw-w64/common.nix

@@ -0,0 +1,11 @@
+{ fetchurl }:
+
+rec {
+  version = "4.0.6";
+  name = "mingw-w64-${version}";
+
+  src = fetchurl {
+    url = "mirror://sourceforge/mingw-w64/mingw-w64-v${version}.tar.bz2";
+    sha256 = "0p01vm5kx1ixc08402z94g1alip4vx66gjpvyi9maqyqn2a76h0c";
+  };
+}

pkgs/os-specific/windows/mingw-w64/default.nix

@@ -1,36 +1,7 @@
-{ stdenv, fetchurl, binutils ? null, gccCross ? null
+{ stdenv, callPackage, windows }:
-, onlyHeaders ? false
-, onlyPthreads ? false
-}:
-
-let
-  version = "4.0.6";
-  name = "mingw-w64-${version}";
-in
-stdenv.mkDerivation ({
-  inherit name;
-
-  src = fetchurl {
-    url = "mirror://sourceforge/mingw-w64/mingw-w64-v${version}.tar.bz2";
-    sha256 = "0p01vm5kx1ixc08402z94g1alip4vx66gjpvyi9maqyqn2a76h0c";
-  };
-} //
-(if onlyHeaders then {
-  name = name + "-headers";
-  preConfigure = ''
-    cd mingw-w64-headers
-  '';
-  configureFlags = "--without-crt";
-} else if onlyPthreads then {
-  name = name + "-pthreads";
-  preConfigure = ''
-    cd mingw-w64-libraries/winpthreads
-  '';
-} else {
-  buildInputs = [ gccCross binutils ];
-
-  crossConfig = gccCross.crossConfig;
 
+stdenv.mkDerivation {
+  inherit (callPackage ./common.nix {}) name src;
+  buildInputs = [ windows.mingw_w64_headers ];
   dontStrip = true;
-})
+}
-)

pkgs/os-specific/windows/mingw-w64/headers.nix

@@ -0,0 +1,13 @@
+{ stdenvNoCC, callPackage }:
+
+let
+  inherit (callPackage ./common.nix {}) name src;
+
+in stdenvNoCC.mkDerivation {
+  name = name + "-headers";
+  inherit src;
+
+  preConfigure = ''
+    cd mingw-w64-headers
+  '';
+}

pkgs/os-specific/windows/mingw-w64/pthreads.nix

@@ -0,0 +1,13 @@
+{ stdenvNoCC, callPackage }:
+
+let
+  inherit (callPackage ./common.nix {}) name src;
+
+in stdenvNoCC.mkDerivation {
+  name = name + "-pthreads";
+  inherit src;
+
+  preConfigure = ''
+    cd mingw-w64-libraries/winpthreads
+  '';
+}

pkgs/shells/bash/4.4.nix

@@ -1,15 +1,16 @@
-{ stdenv, fetchurl, readline70 ? null, interactive ? false, texinfo ? null
+{ stdenv, buildPackages
-, binutils ? null, bison
+, fetchurl, readline70 ? null, texinfo ? null, binutils ? null, bison
+, buildPlatform, hostPlatform
+, interactive ? false
 }:
 
 assert interactive -> readline70 != null;
-assert stdenv.isDarwin -> binutils != null;
+assert hostPlatform.isDarwin -> binutils != null;
 
 let
   version = "4.4";
   realName = "bash-${version}";
   shortName = "bash44";
-  baseConfigureFlags = if interactive then "--with-installed-readline" else "--disable-readline";
   sha256 = "1jyz6snd63xjn6skk7za6psgidsd53k05cr3lksqybi0q6936syq";
 
   upstreamPatches =
@@ -22,7 +23,7 @@ let
     in
       import ./bash-4.4-patches.nix patch;
 
-  inherit (stdenv.lib) optional optionalString;
+  inherit (stdenv.lib) optional optionals;
 in
 
 stdenv.mkDerivation rec {
@@ -52,26 +53,25 @@ stdenv.mkDerivation rec {
   patchFlags = "-p0";
 
   patches = upstreamPatches
-      ++ optional stdenv.isCygwin ./cygwin-bash-4.3.33-1.src.patch;
+      ++ optional hostPlatform.isCygwin ./cygwin-bash-4.3.33-1.src.patch;
 
-  crossAttrs = {
+  configureFlags = [
-    configureFlags = baseConfigureFlags +
+    (if interactive then "--with-installed-readline" else "--disable-readline")
-      " bash_cv_job_control_missing=nomissing bash_cv_sys_named_pipes=nomissing bash_cv_getcwd_malloc=yes" +
+  ] ++ optionals (hostPlatform != buildPlatform) [
-      optionalString stdenv.isCygwin ''
+    "bash_cv_job_control_missing=nomissing bash_cv_sys_named_pipes=nomissing bash_cv_getcwd_malloc=yes"
-        --without-libintl-prefix --without-libiconv-prefix
+  ] ++ optionals hostPlatform.isCygwin [
-        --with-installed-readline
+    "--without-libintl-prefix --without-libiconv-prefix"
-        bash_cv_dev_stdin=present
+    "--with-installed-readline"
-        bash_cv_dev_fd=standard
+    "bash_cv_dev_stdin=present"
-        bash_cv_termcap_lib=libncurses
+    "bash_cv_dev_fd=standard"
-      '';
+    "bash_cv_termcap_lib=libncurses"
-  };
+  ];
-
-  configureFlags = baseConfigureFlags;
 
   # Note: Bison is needed because the patches above modify parse.y.
   nativeBuildInputs = [bison]
     ++ optional (texinfo != null) texinfo
-    ++ optional stdenv.isDarwin binutils;
+    ++ optional hostPlatform.isDarwin binutils
+    ++ optional (hostPlatform != buildPlatform) buildPackages.stdenv.cc;
 
   buildInputs = optional interactive readline70;
 

pkgs/stdenv/adapters.nix

@@ -56,16 +56,36 @@ rec {
 
   # Return a modified stdenv that adds a cross compiler to the
   # builds.
-  makeStdenvCross = stdenv: cross: binutils: gccCross: stdenv // {
+  makeStdenvCross = { stdenv
+                    , cc
+                    , buildPlatform, hostPlatform, targetPlatform
+                    } @ overrideArgs: let
+    stdenv = overrideArgs.stdenv.override {
+      # TODO(@Ericson2314): Cannot do this for now because then Nix thinks the
+      # resulting derivation should be built on the host platform.
+      #hostPlatform = buildPlatform;
+      #targetPlatform = hostPlatform;
+      inherit cc;
 
-    # Overrides are surely not valid as packages built with this run on a
+      allowedRequisites = null;
-    # different platform.
-    overrides = _: _: {};
 
+      # Overrides are surely not valid as packages built with this run on a
+      # different platform.
+      overrides = _: _: {};
+    };
+  in stdenv // {
     mkDerivation =
       { name ? "", buildInputs ? [], nativeBuildInputs ? []
       , propagatedBuildInputs ? [], propagatedNativeBuildInputs ? []
-      , selfNativeBuildInput ? false, ...
+      , # Disabling the tests by default when cross compiling, as usually the
+        # tests rely on being able to run produced binaries.
+        doCheck ? false
+      , configureFlags ? []
+      , # Target is not included by default because most programs don't care.
+        # Including it then would cause needless massive rebuilds.
+        configurePlatforms   ? args.crossAttrs.configurePlatforms   or [ "build" "host" ]
+      , selfNativeBuildInput ? args.crossAttrs.selfNativeBuildInput or false
+      , ...
       } @ args:
 
       let
@@ -88,17 +108,25 @@ rec {
         nativeInputsFromBuildInputs = stdenv.lib.filter hostAsNativeDrv buildInputsNotNull;
       in
         stdenv.mkDerivation (args // {
-          name = name + "-" + cross.config;
+          name = name + "-" + hostPlatform.config;
           nativeBuildInputs = nativeBuildInputs
             ++ nativeInputsFromBuildInputs
-            ++ [ gccCross binutils ]
             ++ stdenv.lib.optional selfNativeBuildInput nativeDrv
               # without proper `file` command, libtool sometimes fails
               # to recognize 64-bit DLLs
-            ++ stdenv.lib.optional (cross.config  == "x86_64-w64-mingw32") pkgs.file
+            ++ stdenv.lib.optional (hostPlatform.config == "x86_64-w64-mingw32") pkgs.file
-            ++ stdenv.lib.optional (cross.config  == "aarch64-linux-gnu") pkgs.updateAutotoolsGnuConfigScriptsHook
+            ++ stdenv.lib.optional (hostPlatform.config == "aarch64-linux-gnu") pkgs.updateAutotoolsGnuConfigScriptsHook
             ;
 
+          inherit doCheck;
+
+          # This parameter is sometimes a string and sometimes a list, yuck
+          configureFlags = let inherit (stdenv.lib) optional elem; in
+            (if stdenv.lib.isString configureFlags then [configureFlags] else configureFlags)
+            ++ optional (elem "build"  configurePlatforms) "--build=${buildPlatform.config}"
+            ++ optional (elem "host"   configurePlatforms) "--host=${hostPlatform.config}"
+            ++ optional (elem "target" configurePlatforms) "--target=${targetPlatform.config}";
+
           # Cross-linking dynamic libraries, every buildInput should
           # be propagated because ld needs the -rpath-link to find
           # any library needed to link the program dynamically at
@@ -107,12 +135,8 @@ rec {
           propagatedBuildInputs = propagatedBuildInputs ++ buildInputs;
           propagatedNativeBuildInputs = propagatedNativeBuildInputs;
 
-          crossConfig = cross.config;
+          crossConfig = hostPlatform.config;
         } // args.crossAttrs or {});
-
-    inherit gccCross binutils;
-    ccCross = gccCross;
-
   };
 
 

pkgs/stdenv/cross/default.nix

@@ -31,15 +31,15 @@ in bootStages ++ [
     targetPlatform = crossSystem;
     inherit config overlays;
     selfBuild = false;
-    stdenv = if crossSystem.useiOSCross or false
+    stdenv = buildPackages.makeStdenvCross {
-      then let
+      inherit (buildPackages) stdenv;
-          inherit (buildPackages.darwin.ios-cross) cc binutils;
+      buildPlatform = localSystem;
-        in buildPackages.makeStdenvCross
+      hostPlatform = crossSystem;
-          buildPackages.stdenv crossSystem
+      targetPlatform = crossSystem;
-          binutils cc
+      cc = if crossSystem.useiOSCross or false
-      else buildPackages.makeStdenvCross
+           then buildPackages.darwin.ios-cross
-        buildPackages.stdenv crossSystem
+           else buildPackages.gccCrossStageFinal;
-        buildPackages.binutils buildPackages.gccCrossStageFinal;
+    };
   })
 
 ]

pkgs/stdenv/darwin/default.nix

@@ -73,6 +73,8 @@ in rec {
           nativeTools  = true;
           nativePrefix = bootstrapTools;
           nativeLibc   = false;
+          hostPlatform = localSystem;
+          targetPlatform = localSystem;
           libc         = last.pkgs.darwin.Libsystem;
           isClang      = true;
           cc           = { name = "clang-9.9.9"; outPath = bootstrapTools; };
@@ -295,6 +297,8 @@ in rec {
       inherit shell;
       nativeTools = false;
       nativeLibc  = false;
+      hostPlatform = localSystem;
+      targetPlatform = localSystem;
       inherit (pkgs) coreutils binutils gnugrep;
       inherit (pkgs.darwin) dyld;
       cc   = pkgs.llvmPackages.clang-unwrapped;

pkgs/stdenv/freebsd/default.nix

@@ -77,6 +77,8 @@ let inherit (localSystem) system; in
         nativeTools  = true;
         nativePrefix = "/usr";
         nativeLibc   = true;
+        hostPlatform = localSystem;
+        targetPlatform = localSystem;
         inherit (prevStage) stdenv;
         cc           = {
           name    = "clang-9.9.9";

pkgs/stdenv/linux/default.nix

@@ -76,6 +76,8 @@ let
              else lib.makeOverridable (import ../../build-support/cc-wrapper) {
           nativeTools = false;
           nativeLibc = false;
+          hostPlatform = localSystem;
+          targetPlatform = localSystem;
           cc = prevStage.gcc-unwrapped;
           isGNU = true;
           libc = prevStage.glibc;
@@ -239,6 +241,8 @@ in
         nativeTools = false;
         nativeLibc = false;
         isGNU = true;
+        hostPlatform = localSystem;
+        targetPlatform = localSystem;
         cc = prevStage.gcc-unwrapped;
         libc = self.glibc;
         inherit (self) stdenv binutils coreutils gnugrep;

pkgs/stdenv/linux/make-bootstrap-tools-cross.nix

@@ -81,7 +81,6 @@ rec {
       nativeBuildInputs = [
         pkgs.buildPackages.nukeReferences
         pkgs.buildPackages.cpio
-        pkgs.buildPackages.binutils
       ];
 
       buildCommand = ''

pkgs/stdenv/native/default.nix

@@ -125,6 +125,8 @@ in
         "i686-solaris" = "/usr/gnu";
         "x86_64-solaris" = "/opt/local/gcc47";
       }.${system} or "/usr";
+      hostPlatform = localSystem;
+      targetPlatform = localSystem;
       inherit stdenv;
     };
 

pkgs/stdenv/nix/default.nix

@@ -30,6 +30,8 @@ bootStages ++ [
         nativeTools = false;
         nativePrefix = stdenv.lib.optionalString hostPlatform.isSunOS "/usr";
         nativeLibc = true;
+        hostPlatform = localSystem;
+        targetPlatform = localSystem;
         inherit stdenv;
         inherit (prevStage) binutils coreutils gnugrep;
         cc = prevStage.gcc.cc;

pkgs/tools/archivers/unzip/cross-cc.patch

@@ -0,0 +1,12 @@
+--- a/unix/Makefile
++++ b/unix/Makefile
+@@ -42,9 +42,7 @@
+ # such as -DDOSWILD).
+ 
+ # UnZip flags
+-CC = cc#	try using "gcc" target rather than changing this (CC and LD
+ LD = $(CC)#	must match, else "unresolved symbol:  ___main" is possible)
+-AS = as
+ LOC = $(D_USE_BZ2) $(LOCAL_UNZIP)
+ AF = $(LOC)
+ CFLAGS = -O

pkgs/tools/archivers/unzip/default.nix

@@ -1,5 +1,8 @@
-{ stdenv, fetchurl, bzip2
+{ stdenv, fetchurl
-, enableNLS ? false, libnatspec }:
+, bzip2
+, enableNLS ? false, libnatspec
+, buildPlatform, hostPlatform
+}:
 
 stdenv.mkDerivation {
   name = "unzip-6.0";
@@ -25,14 +28,15 @@ stdenv.mkDerivation {
       url = "http://sources.gentoo.org/cgi-bin/viewvc.cgi/gentoo-x86/app-arch/unzip/files/unzip-6.0-natspec.patch?revision=1.1";
       name = "unzip-6.0-natspec.patch";
       sha256 = "67ab260ae6adf8e7c5eda2d1d7846929b43562943ec4aff629bd7018954058b1";
-    });
+    })
+    ++ stdenv.lib.optional (hostPlatform != buildPlatform) ./cross-cc.patch;
 
   nativeBuildInputs = [ bzip2 ];
   buildInputs = [ bzip2 ] ++ stdenv.lib.optional enableNLS libnatspec;
 
   makefile = "unix/Makefile";
 
-  NIX_LDFLAGS = [ "-lbz2" ] ++ stdenv.lib.optional enableNLS "-lnatspec";
+  ${"NIX_${stdenv.cc.infixSalt_}LDFLAGS"} = [ "-lbz2" ] ++ stdenv.lib.optional enableNLS "-lnatspec";
 
   buildFlags = "generic D_USE_BZ2=-DUSE_BZIP2 L_BZ2=-lbz2";
 

pkgs/tools/misc/coreutils/default.nix

@@ -1,8 +1,9 @@
-{ lib, stdenv, buildPackages, fetchurl, perl, xz, gmp ? null
+{ stdenv, lib, buildPackages
+, autoconf, automake114x, texinfo, fetchurl, perl, xz, libiconv, gmp ? null
+, hostPlatform, buildPlatform
 , aclSupport ? false, acl ? null
 , attrSupport ? false, attr ? null
 , selinuxSupport? false, libselinux ? null, libsepol ? null
-, autoconf, automake114x, texinfo
 , withPrefix ? false
 , singleBinary ? "symlinks" # you can also pass "shebangs" or false
 }:
@@ -23,10 +24,10 @@ stdenv.mkDerivation rec {
   # FIXME needs gcc 4.9 in bootstrap tools
   hardeningDisable = [ "stackprotector" ];
 
-  patches = optional stdenv.isCygwin ./coreutils-8.23-4.cygwin.patch;
+  patches = optional hostPlatform.isCygwin ./coreutils-8.23-4.cygwin.patch;
 
   # The test tends to fail on btrfs and maybe other unusual filesystems.
-  postPatch = optionalString (!stdenv.isDarwin) ''
+  postPatch = optionalString (!hostPlatform.isDarwin) ''
     sed '2i echo Skipping dd sparse test && exit 0' -i ./tests/dd/sparse.sh
     sed '2i echo Skipping cp sparse test && exit 0' -i ./tests/cp/sparse.sh
     sed '2i echo Skipping rm deep-2 test && exit 0' -i ./tests/rm/deep-2.sh
@@ -42,58 +43,54 @@ stdenv.mkDerivation rec {
   configureFlags =
     optional (singleBinary != false)
       ("--enable-single-binary" + optionalString (isString singleBinary) "=${singleBinary}")
-    ++ optional stdenv.isSunOS "ac_cv_func_inotify_init=no"
+    ++ optional hostPlatform.isSunOS "ac_cv_func_inotify_init=no"
-    ++ optional withPrefix "--program-prefix=g";
+    ++ optional withPrefix "--program-prefix=g"
+    ++ optionals (hostPlatform != buildPlatform && hostPlatform.libc == "glibc") [
+      # TODO(19b98110126fde7cbb1127af7e3fe1568eacad3d): Needed for fstatfs() I
+      # don't know why it is not properly detected cross building with glibc.
+      "fu_cv_sys_stat_statfs2_bsize=yes"
+    ];
+
 
   buildInputs = [ gmp ]
     ++ optional aclSupport acl
     ++ optional attrSupport attr
-    ++ optionals stdenv.isCygwin [ autoconf automake114x texinfo ]   # due to patch
+    ++ optionals hostPlatform.isCygwin [ autoconf automake114x texinfo ]   # due to patch
-    ++ optionals selinuxSupport [ libselinux libsepol ];
+    ++ optionals selinuxSupport [ libselinux libsepol ]
-
+       # TODO(@Ericson2314): Investigate whether Darwin could benefit too
-  crossAttrs = {
+    ++ optional (hostPlatform != buildPlatform && hostPlatform.libc != "glibc") libiconv;
-    buildInputs = [ gmp.crossDrv ]
-      ++ optional aclSupport acl.crossDrv
-      ++ optional attrSupport attr.crossDrv
-      ++ optionals selinuxSupport [ libselinux.crossDrv libsepol.crossDrv ]
-      ++ optional (stdenv ? ccCross.libc.libiconv)
-        stdenv.ccCross.libc.libiconv.crossDrv;
-
-    # Prevents attempts of running 'help2man' on cross-built binaries.
-    PERL = "missing";
-
-    # Works around a bug with 8.26:
-    # Makefile:3440: *** Recursive variable 'INSTALL' references itself (eventually).  Stop.
-    preInstall = ''
-      sed -i Makefile -e 's|^INSTALL =.*|INSTALL = ${buildPackages.coreutils}/bin/install -c|'
-    '';
-
-    postInstall = ''
-      rm $out/share/man/man1/*
-      cp ${buildPackages.coreutils}/share/man/man1/* $out/share/man/man1
-    '';
-
-    # Needed for fstatfs()
-    # I don't know why it is not properly detected cross building with glibc.
-    configureFlags = [ "fu_cv_sys_stat_statfs2_bsize=yes" ];
-    doCheck = false;
-  };
 
   # The tests are known broken on Cygwin
   # (http://thread.gmane.org/gmane.comp.gnu.core-utils.bugs/19025),
   # Darwin (http://thread.gmane.org/gmane.comp.gnu.core-utils.bugs/19351),
   # and {Open,Free}BSD.
   # With non-standard storeDir: https://github.com/NixOS/nix/issues/512
-  doCheck = stdenv ? glibc && builtins.storeDir == "/nix/store";
+  doCheck = hostPlatform == buildPlatform
+    && hostPlatform.libc == "glibc"
+    && builtins.storeDir == "/nix/store";
+
+  # Prevents attempts of running 'help2man' on cross-built binaries.
+  ${if hostPlatform == buildPlatform then null else "PERL"} = "missing";
 
   # Saw random failures like ‘help2man: can't get '--help' info from
   # man/sha512sum.td/sha512sum’.
   enableParallelBuilding = false;
 
   NIX_LDFLAGS = optionalString selinuxSupport "-lsepol";
-  FORCE_UNSAFE_CONFIGURE = optionalString stdenv.isSunOS "1";
+  FORCE_UNSAFE_CONFIGURE = optionalString hostPlatform.isSunOS "1";
 
-  makeFlags = optionalString stdenv.isDarwin "CFLAGS=-D_FORTIFY_SOURCE=0";
+  makeFlags = optionalString hostPlatform.isDarwin "CFLAGS=-D_FORTIFY_SOURCE=0";
+
+  # Works around a bug with 8.26:
+  # Makefile:3440: *** Recursive variable 'INSTALL' references itself (eventually).  Stop.
+  ${if hostPlatform == buildPlatform then null else "preInstall"} = ''
+    sed -i Makefile -e 's|^INSTALL =.*|INSTALL = ${buildPackages.coreutils}/bin/install -c|'
+  '';
+
+  ${if hostPlatform == buildPlatform then null else "postInstall"} = ''
+    rm $out/share/man/man1/*
+    cp ${buildPackages.coreutils}/share/man/man1/* $out/share/man/man1
+  '';
 
   meta = {
     homepage = http://www.gnu.org/software/coreutils/;
@@ -112,4 +109,5 @@ stdenv.mkDerivation rec {
 
     maintainers = [ maintainers.eelco ];
   };
+
 }

pkgs/tools/misc/findutils/default.nix

@@ -1,4 +1,9 @@
-{ stdenv, fetchurl, coreutils }:
+{ stdenv, fetchurl
+, coreutils
+, buildPlatform, hostPlatform
+}:
+
+let inherit (stdenv.lib) optionals; in
 
 stdenv.mkDerivation rec {
   name = "findutils-4.6.0";
@@ -10,20 +15,18 @@ stdenv.mkDerivation rec {
 
   patches = [ ./memory-leak.patch ./no-install-statedir.patch ];
 
-  buildInputs = [ coreutils ]; # bin/updatedb script needs to call sort
+  buildInputs = optionals (hostPlatform == buildPlatform) [ coreutils ]; # bin/updatedb script needs to call sort
 
   # Since glibc-2.25 the i686 tests hang reliably right after test-sleep.
-  doCheck = !stdenv.isDarwin && (stdenv.system != "i686-linux");
+  doCheck
+    =  !hostPlatform.isDarwin
+    && !(hostPlatform.libc == "glibc" && hostPlatform.isi686)
+    && hostPlatform == buildPlatform;
 
   outputs = [ "out" "info" ];
 
   configureFlags = [ "--localstatedir=/var/cache" ];
 
-  crossAttrs = {
-    # Fix the 'buildInputs = [ coreutils ]' above - that adds the cross coreutils to PATH :(
-    propagatedBuildInputs = [ ];
-  };
-
   enableParallelBuilding = true;
 
   meta = {

pkgs/tools/misc/xburst-tools/default.nix

@@ -1,5 +1,6 @@
 { stdenv, fetchgit, libusb, libusb1, autoconf, automake, confuse, pkgconfig
-, gccCross ? null }:
+, gccCross ? null, crossPrefix
+}:
 
 let
   version = "2011-12-26";
@@ -18,7 +19,7 @@ stdenv.mkDerivation {
   '';
 
   configureFlags = if gccCross != null then
-    "--enable-firmware CROSS_COMPILE=${gccCross.crossConfig}-"
+    "--enable-firmware CROSS_COMPILE=${crossPrefix}-"
     else "";
 
   # Not to strip cross build binaries (this is for the gcc-cross-wrapper)

pkgs/tools/networking/dropbear/default.nix

@@ -22,13 +22,6 @@ stdenv.mkDerivation rec {
     makeFlags=VPATH=`cat $NIX_CC/nix-support/orig-libc`/lib
   '';
 
-  crossAttrs = {
-    # This works for uclibc, at least.
-    preConfigure = ''
-      makeFlags=VPATH=`cat ${stdenv.ccCross}/nix-support/orig-libc`/lib
-    '';
-  };
-
   patches = [
     # Allow sessions to inherit the PATH from the parent dropbear.
     # Otherwise they only get the usual /bin:/usr/bin kind of PATH

pkgs/tools/system/ddrescue/default.nix

@@ -1,4 +1,9 @@
-{ stdenv, fetchurl, lzip }:
+{ stdenv
+, fetchurl, lzip
+, hostPlatform, buildPlatform
+}:
+
+let inherit (stdenv.lib) optionals; in
 
 stdenv.mkDerivation rec {
   name = "ddrescue-1.22";
@@ -10,7 +15,12 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ lzip ];
 
-  doCheck = true;
+  doCheck = hostPlatform == buildPlatform;
+
+  ${if hostPlatform != buildPlatform then "crossPlatforms" else null} = [ ];
+  ${if hostPlatform != buildPlatform then "configureFlags" else null} = [
+    "CXX=${stdenv.cc.prefix}c++"
+  ];
 
   meta = with stdenv.lib; {
     description = "GNU ddrescue, a data recovery tool";

pkgs/tools/text/gnupatch/default.nix

@@ -1,4 +1,7 @@
-{ stdenv, fetchurl, ed }:
+{ stdenv, fetchurl
+, ed
+, buildPlatform, hostPlatform
+}:
 
 stdenv.mkDerivation rec {
   name = "patch-2.7.5";
@@ -10,11 +13,11 @@ stdenv.mkDerivation rec {
 
   buildInputs = stdenv.lib.optional doCheck ed;
 
-  crossAttrs = {
+  configureFlags = if hostPlatform == buildPlatform then null else [
-    configureFlags = [ "ac_cv_func_strnlen_working=yes" ];
+    "ac_cv_func_strnlen_working=yes"
-  };
+  ];
 
-  doCheck = true;
+  doCheck = hostPlatform == buildPlatform;
 
   meta = {
     description = "GNU Patch, a program to apply differences to files";

pkgs/top-level/all-packages.nix

@@ -4816,15 +4816,16 @@ with pkgs;
 
   x11_ssh_askpass = callPackage ../tools/networking/x11-ssh-askpass { };
 
-  xbursttools = assert stdenv ? glibc; callPackage ../tools/misc/xburst-tools {
+  xbursttools = assert stdenv ? glibc; callPackage ../tools/misc/xburst-tools rec {
     # It needs a cross compiler for mipsel to build the firmware it will
     # load into the Ben Nanonote
+    crossPrefix = "mipsel-unknown-linux";
     gccCross =
       let
         pkgsCross = nixpkgsFun {
           # Ben Nanonote system
           crossSystem = {
-            config = "mipsel-unknown-linux";
+            config = crossPrefix;
             bigEndian = true;
             arch = "mips";
             float = "soft";
@@ -4843,7 +4844,7 @@ with pkgs;
           };
         };
       in
-        pkgsCross.gccCrossStageStatic;
+        pkgsCross.buildPackages.gccCrossStageStatic;
   };
 
   xclip = callPackage ../tools/misc/xclip { };
@@ -5163,13 +5164,21 @@ with pkgs;
 
   gccApple = throw "gccApple is no longer supported";
 
+  # Can't just overrideCC, because then the stdenv-cross mkDerivation will be
+  # thrown away. TODO: find a better solution for this.
+  crossLibcStdenv = buildPackages.makeStdenvCross {
+    inherit (buildPackages.buildPackages) stdenv;
+    inherit buildPlatform hostPlatform targetPlatform;
+    cc = buildPackages.gccCrossStageStatic;
+  };
+
   gccCrossStageStatic = assert targetPlatform != buildPlatform; let
     libcCross1 =
-      if targetPlatform.libc == "msvcrt" then windows.mingw_w64_headers
+      if targetPlatform.libc == "msvcrt" then __targetPackages.windows.mingw_w64_headers
       else if targetPlatform.libc == "libSystem" then darwin.xcode
       else null;
-    in wrapGCCCross {
+    in wrapCCCross {
-      gcc = forcedNativePackages.gcc.cc.override {
+      cc = forcedNativePackages.gcc.cc.override {
         crossStageStatic = true;
         langCC = false;
         libcCross = libcCross1;
@@ -5179,19 +5188,17 @@ with pkgs;
       };
       libc = libcCross1;
       inherit (forcedNativePackages) binutils;
-      cross = targetPlatform;
   };
 
   # Only needed for mingw builds
-  gccCrossMingw2 = assert targetPlatform != buildPlatform; wrapGCCCross {
+  gccCrossMingw2 = assert targetPlatform != buildPlatform; wrapCCCross {
-    gcc = gccCrossStageStatic.gcc;
+    cc = gccCrossStageStatic.gcc;
     libc = windows.mingw_headers2;
     inherit (forcedNativePackages) binutils;
-    cross = targetPlatform;
   };
 
-  gccCrossStageFinal = assert targetPlatform != buildPlatform; wrapGCCCross {
+  gccCrossStageFinal = assert targetPlatform != buildPlatform; wrapCCCross {
-    gcc = forcedNativePackages.gcc.cc.override {
+    cc = forcedNativePackages.gcc.cc.override {
       crossStageStatic = false;
 
       # Why is this needed?
@@ -5199,7 +5206,6 @@ with pkgs;
     };
     libc = libcCross;
     inherit (forcedNativePackages) binutils;
-    cross = targetPlatform;
   };
 
   gcc45 = lowPrio (wrapCC (callPackage ../development/compilers/gcc/4.5 {
@@ -5924,14 +5930,19 @@ with pkgs;
     libc = glibc;
   };
 
-  wrapGCCCross =
+  wrapCCCross =
-    {gcc, libc, binutils, cross, shell ? "", name ? "gcc-cross-wrapper"}:
+    {cc, libc, binutils, shell ? "", name ? "gcc-cross-wrapper"}:
 
-    forcedNativePackages.callPackage ../build-support/gcc-cross-wrapper {
+    forcedNativePackages.ccWrapperFun {
       nativeTools = false;
       nativeLibc = false;
       noLibc = (libc == null);
-      inherit gcc binutils libc shell name cross;
+
+      dyld = if stdenv.isDarwin then darwin.dyld else null;
+      isGNU = cc.isGNU or false;
+      isClang = cc.isClang or false;
+
+      inherit cc binutils libc shell name;
     };
 
   # prolog
@@ -7798,13 +7809,7 @@ with pkgs;
   # Being redundant to avoid cycles on boot. TODO: find a better way
   glibcCross = callPackage ../development/libraries/glibc {
     installLocales = config.glibc.locales or false;
-    # Can't just overrideCC, because then the stdenv-cross mkDerivation will be
+    stdenv = crossLibcStdenv;
-    # thrown away. TODO: find a better solution for this.
-    stdenv = buildPackages.makeStdenvCross
-      buildPackages.buildPackages.stdenv
-      buildPackages.targetPlatform
-      buildPackages.binutils
-      buildPackages.gccCrossStageStatic;
   };
 
   # We can choose:
@@ -7813,7 +7818,7 @@ with pkgs;
     # hack fixes the hack, *sigh*.
     /**/ if name == "glibc" then __targetPackages.glibcCross or glibcCross
     else if name == "uclibc" then uclibcCross
-    else if name == "msvcrt" then windows.mingw_w64
+    else if name == "msvcrt" then __targetPackages.windows.mingw_w64 or windows.mingw_w64
     else if name == "libSystem" then darwin.xcode
     else throw "Unknown libc";
 
@@ -12573,17 +12578,12 @@ with pkgs;
     };
 
     mingw_w64 = callPackage ../os-specific/windows/mingw-w64 {
-      gccCross = gccCrossStageStatic;
+      stdenv = crossLibcStdenv;
-      binutils = binutils;
     };
 
-    mingw_w64_headers = callPackage ../os-specific/windows/mingw-w64 {
+    mingw_w64_headers = callPackage ../os-specific/windows/mingw-w64/headers.nix { };
-      onlyHeaders = true;
-    };
 
-    mingw_w64_pthreads = callPackage ../os-specific/windows/mingw-w64 {
+    mingw_w64_pthreads = callPackage ../os-specific/windows/mingw-w64/pthreads.nix { };
-      onlyPthreads = true;
-    };
 
     pthreads = callPackage ../os-specific/windows/pthread-w32 {
       mingw_headers = mingw_headers3;