Revert "Merge pull request #36948 from dtzWill/fix/glibc-libgcc_s"

This reverts commit 80ff19a45f40ddb3a3c55dbd929295fcb946eabb, reversing
changes made to 43e867a226a8dc5c9c968aeae1c526697c71cd32.

pkgs/development/libraries/glibc/default.nix

···
     #      limit rebuilds by only disabling pie w/musl
       ++ stdenv.lib.optional stdenv.hostPlatform.isMusl "pie";
 
+    # When building glibc from bootstrap-tools, we need libgcc_s at RPATH for
+    # any program we run, because the gcc will have been placed at a new
+    # store path than that determined when built (as a source for the
+    # bootstrap-tools tarball)
+    # Building from a proper gcc staying in the path where it was installed,
+    # libgcc_s will not be at {gcc}/lib, and gcc's libgcc will be found without
+    # any special hack.
+    preInstall = ''
+      if [ -f ${stdenv.cc.cc}/lib/libgcc_s.so.1 ]; then
+          mkdir -p $out/lib
+          cp ${stdenv.cc.cc}/lib/libgcc_s.so.1 $out/lib/libgcc_s.so.1
+          # the .so It used to be a symlink, but now it is a script
+          cp -a ${stdenv.cc.cc}/lib/libgcc_s.so $out/lib/libgcc_s.so
+      fi
+    '';
+
     postInstall = ''
       echo SUPPORTED-LOCALES=C.UTF-8/UTF-8 > ../glibc-2*/localedata/SUPPORTED
       make -j''${NIX_BUILD_CORES:-1} -l''${NIX_BUILD_CORES:-1} localedata/install-locales

pkgs/top-level/all-packages.nix

···
 
   llvmPackages = recurseIntoAttrs llvmPackages_5;
 
-  llvmPackages_35 = callPackage ../development/compilers/llvm/3.5 {
+  llvmPackages_35 = callPackage ../development/compilers/llvm/3.5 ({
     isl = isl_0_14;
-  };
+  } // stdenv.lib.optionalAttrs (stdenv.cc.isGNU && stdenv.hostPlatform.isi686) {
+    stdenv = overrideCC stdenv buildPackages.gcc6;
+  });
 
-  llvmPackages_37 = callPackage ../development/compilers/llvm/3.7 {
+  llvmPackages_37 = callPackage ../development/compilers/llvm/3.7 ({
     inherit (stdenvAdapters) overrideCC;
     buildLlvmTools = buildPackages.llvmPackages_37.tools;
     targetLlvmLibraries = targetPackages.llvmPackages_37.libraries;
-  };
+  } // stdenv.lib.optionalAttrs (stdenv.cc.isGNU && stdenv.hostPlatform.isi686) {
+    stdenv = overrideCC stdenv buildPackages.gcc6;
+  });
 
-  llvmPackages_38 = callPackage ../development/compilers/llvm/3.8 {
+  llvmPackages_38 = callPackage ../development/compilers/llvm/3.8 ({
     inherit (stdenvAdapters) overrideCC;
     buildLlvmTools = buildPackages.llvmPackages_38.tools;
     targetLlvmLibraries = targetPackages.llvmPackages_38.libraries;
-  };
+  } // stdenv.lib.optionalAttrs (stdenv.cc.isGNU && stdenv.hostPlatform.isi686) {
+    stdenv = overrideCC stdenv buildPackages.gcc6;
+  });
 
-  llvmPackages_39 = callPackage ../development/compilers/llvm/3.9 {
+  llvmPackages_39 = callPackage ../development/compilers/llvm/3.9 ({
     inherit (stdenvAdapters) overrideCC;
     buildLlvmTools = buildPackages.llvmPackages_39.tools;
     targetLlvmLibraries = targetPackages.llvmPackages_39.libraries;
-  };
+  } // stdenv.lib.optionalAttrs (stdenv.cc.isGNU && stdenv.hostPlatform.isi686) {
+    stdenv = overrideCC stdenv buildPackages.gcc6;
+  });
 
-  llvmPackages_4 = callPackage ../development/compilers/llvm/4 {
+  llvmPackages_4 = callPackage ../development/compilers/llvm/4 ({
     inherit (stdenvAdapters) overrideCC;
     buildLlvmTools = buildPackages.llvmPackages_4.tools;
     targetLlvmLibraries = targetPackages.llvmPackages_4.libraries;
-  };
+  } // stdenv.lib.optionalAttrs (stdenv.cc.isGNU && stdenv.hostPlatform.isi686) {
+    stdenv = overrideCC stdenv buildPackages.gcc6;
+  });
 
-  llvmPackages_5 = callPackage ../development/compilers/llvm/5 {
+  llvmPackages_5 = callPackage ../development/compilers/llvm/5 ({
     inherit (stdenvAdapters) overrideCC;
     buildLlvmTools = buildPackages.llvmPackages_5.tools;
     targetLlvmLibraries = targetPackages.llvmPackages_5.libraries;
-  };
+  } // stdenv.lib.optionalAttrs (stdenv.cc.isGNU && stdenv.hostPlatform.isi686) {
+    stdenv = overrideCC stdenv buildPackages.gcc6; # with gcc-7: undefined reference to `__divmoddi4'
+  });
 
-  llvmPackages_6 = callPackage ../development/compilers/llvm/6 {
+  llvmPackages_6 = callPackage ../development/compilers/llvm/6 ({
     inherit (stdenvAdapters) overrideCC;
     buildLlvmTools = buildPackages.llvmPackages_6.tools;
     targetLlvmLibraries = targetPackages.llvmPackages_6.libraries;
-  };
+  } // stdenv.lib.optionalAttrs (stdenv.cc.isGNU && stdenv.hostPlatform.isi686) {
+    stdenv = overrideCC stdenv buildPackages.gcc6; # with gcc-7: undefined reference to `__divmoddi4'
+  });
 
-  llvmPackages_7 = callPackage ../development/compilers/llvm/7 {
+  llvmPackages_7 = callPackage ../development/compilers/llvm/7 ({
     inherit (stdenvAdapters) overrideCC;
     buildLlvmTools = buildPackages.llvmPackages_7.tools;
     targetLlvmLibraries = targetPackages.llvmPackages_7.libraries;
-  };
+  } // stdenv.lib.optionalAttrs (stdenv.cc.isGNU && stdenv.hostPlatform.isi686) {
+    stdenv = overrideCC stdenv buildPackages.gcc6; # with gcc-7: undefined reference to `__divmoddi4'
+  });
 
   llvmPackages_latest = llvmPackages_7;
 
···
   };
 
   # For beta and nightly releases use the nixpkgs-mozilla overlay
-  rust = callPackage ../development/compilers/rust {
+  rust = callPackage ../development/compilers/rust ({
     inherit (darwin.apple_sdk.frameworks) CoreFoundation Security;
     llvm = llvm_7;
-  };
+  } // stdenv.lib.optionalAttrs (stdenv.cc.isGNU && stdenv.hostPlatform.isi686) {
+    stdenv = overrideCC stdenv gcc6; # with gcc-7: undefined reference to `__divmoddi4'
+  });
   inherit (rust) cargo rustc;
 
   buildRustCrate = callPackage ../build-support/rust/build-rust-crate { };
···
   spark_22 = callPackage ../applications/networking/cluster/spark { version = "2.2.1"; };
 
   spidermonkey_1_8_5 = callPackage ../development/interpreters/spidermonkey/1.8.5.nix { };
-  spidermonkey_38 = callPackage ../development/interpreters/spidermonkey/38.nix {
+  spidermonkey_38 = callPackage ../development/interpreters/spidermonkey/38.nix ({
     inherit (darwin) libobjc;
-  };
+  } // (stdenv.lib.optionalAttrs (stdenv.cc.isGNU && stdenv.hostPlatform.isi686) {
+      stdenv = overrideCC stdenv gcc6; # with gcc-7: undefined reference to `__divmoddi4'
+  }));
   spidermonkey_52 = callPackage ../development/interpreters/spidermonkey/52.nix { };
   spidermonkey_60 = callPackage ../development/interpreters/spidermonkey/60.nix { };
   spidermonkey = spidermonkey_38;
···
 
   hyperscan = callPackage ../development/libraries/hyperscan { };
 
-  icu58 = callPackage (import ../development/libraries/icu/58.nix fetchurl) {
+  icu58 = callPackage (import ../development/libraries/icu/58.nix fetchurl) ({
     nativeBuildRoot = buildPackages.icu58.override { buildRootOnly = true; };
-  };
-  icu59 = callPackage ../development/libraries/icu/59.nix {
+  } //
+    (stdenv.lib.optionalAttrs (stdenv.cc.isGNU && stdenv.hostPlatform.isi686) {
+      stdenv = overrideCC stdenv gcc6; # with gcc-7: undefined reference to `__divmoddi4'
+    }));
+  icu59 = callPackage ../development/libraries/icu/59.nix ({
     nativeBuildRoot = buildPackages.icu59.override { buildRootOnly = true; };
-  };
-  icu60 = callPackage ../development/libraries/icu/60.nix {
+  } // (stdenv.lib.optionalAttrs (stdenv.cc.isGNU && stdenv.hostPlatform.isi686) {
+      stdenv = overrideCC stdenv gcc6; # with gcc-7: undefined reference to `__divmoddi4'
+    }));
+  icu60 = callPackage ../development/libraries/icu/60.nix ({
     nativeBuildRoot = buildPackages.icu60.override { buildRootOnly = true; };
-  };
-  icu63 = callPackage ../development/libraries/icu/63.nix {
+  } // (stdenv.lib.optionalAttrs (stdenv.cc.isGNU && stdenv.hostPlatform.isi686) {
+      stdenv = overrideCC stdenv gcc6; # with gcc-7: undefined reference to `__divmoddi4'
+    }));
+  icu63 = callPackage ../development/libraries/icu/63.nix ({
     nativeBuildRoot = buildPackages.icu63.override { buildRootOnly = true; };
-  };
+  } // (stdenv.lib.optionalAttrs (stdenv.cc.isGNU && stdenv.hostPlatform.isi686) {
+      stdenv = overrideCC stdenv gcc6; # with gcc-7: undefined reference to `__divmoddi4'
+    }));
+
   icu = icu59;
 
   id3lib = callPackage ../development/libraries/id3lib { };