9 files changed, 63 insertions, 14 deletions
diff --git a/pkgs/development/compilers/llvm/6/clang/default.nix b/pkgs/development/compilers/llvm/6/clang/default.nix
index 7139e15d1dc3..e2f7166354ae 100644
--- a/pkgs/development/compilers/llvm/6/clang/default.nix
+++ b/pkgs/development/compilers/llvm/6/clang/default.nix
@@ -83,7 +83,7 @@ let
 
     meta = {
       description = "A c, c++, objective-c, and objective-c++ frontend for the llvm compiler";
-      homepage    = "http://llvm.org/";
+      homepage    = "https://llvm.org/";
       license     = stdenv.lib.licenses.ncsa;
       platforms   = stdenv.lib.platforms.all;
     };
diff --git a/pkgs/development/compilers/llvm/6/compiler-rt.nix b/pkgs/development/compilers/llvm/6/compiler-rt.nix
index b3b6e86fc525..1bdba107d7dd 100644
--- a/pkgs/development/compilers/llvm/6/compiler-rt.nix
+++ b/pkgs/development/compilers/llvm/6/compiler-rt.nix
@@ -1,5 +1,13 @@
 { stdenv, version, fetch, cmake, python3, llvm, libcxxabi }:
-with stdenv.lib;
+
+let
+
+  useLLVM = stdenv.hostPlatform.useLLVM or false;
+  bareMetal = stdenv.hostPlatform.parsed.kernel.name == "none";
+  inherit (stdenv.hostPlatform) isMusl;
+
+in
+
 stdenv.mkDerivation {
   pname = "compiler-rt";
   inherit version;
@@ -8,15 +16,38 @@ stdenv.mkDerivation {
   nativeBuildInputs = [ cmake python3 llvm ];
   buildInputs = stdenv.lib.optional stdenv.hostPlatform.isDarwin libcxxabi;
 
-  configureFlags = [
+  NIX_CFLAGS_COMPILE = [
+    "-DSCUDO_DEFAULT_OPTIONS=DeleteSizeMismatch=0:DeallocationTypeMismatch=0"
+  ];
+
+  cmakeFlags = [
     "-DCOMPILER_RT_DEFAULT_TARGET_ONLY=ON"
+    "-DCMAKE_C_COMPILER_TARGET=${stdenv.hostPlatform.config}"
+    "-DCMAKE_ASM_COMPILER_TARGET=${stdenv.hostPlatform.config}"
+  ] ++ stdenv.lib.optionals (useLLVM || bareMetal || isMusl) [
+    "-DCOMPILER_RT_BUILD_SANITIZERS=OFF"
+    "-DCOMPILER_RT_BUILD_XRAY=OFF"
+    "-DCOMPILER_RT_BUILD_LIBFUZZER=OFF"
+    "-DCOMPILER_RT_BUILD_PROFILE=OFF"
+  ] ++ stdenv.lib.optionals (useLLVM || bareMetal) [
+    "-DCMAKE_C_COMPILER_WORKS=ON"
+    "-DCMAKE_CXX_COMPILER_WORKS=ON"
+    "-DCOMPILER_RT_BAREMETAL_BUILD=ON"
+    "-DCMAKE_SIZEOF_VOID_P=${toString (stdenv.hostPlatform.parsed.cpu.bits / 8)}"
+  ] ++ stdenv.lib.optionals (useLLVM) [
+    "-DCOMPILER_RT_BUILD_BUILTINS=ON"
+    "-DCMAKE_C_FLAGS=-nodefaultlibs"
+    #https://stackoverflow.com/questions/53633705/cmake-the-c-compiler-is-not-able-to-compile-a-simple-test-program
+    "-DCMAKE_TRY_COMPILE_TARGET_TYPE=STATIC_LIBRARY"
+  ] ++ stdenv.lib.optionals (bareMetal) [
+    "-DCOMPILER_RT_OS_DIR=baremetal"
   ];
 
   outputs = [ "out" "dev" ];
 
   patches = [
     ./compiler-rt-codesign.patch # Revert compiler-rt commit that makes codesign mandatory
-  ] ++ optional stdenv.hostPlatform.isMusl ./sanitizers-nongnu.patch;
+  ] ++ stdenv.lib.optional stdenv.hostPlatform.isMusl ./sanitizers-nongnu.patch;
 
   # TSAN requires XPC on Darwin, which we have no public/free source files for. We can depend on the Apple frameworks
   # to get it, but they're unfree. Since LLVM is rather central to the stdenv, we patch out TSAN support so that Hydra
@@ -26,11 +57,23 @@ stdenv.mkDerivation {
   postPatch = stdenv.lib.optionalString stdenv.isDarwin ''
     substituteInPlace cmake/config-ix.cmake \
       --replace 'set(COMPILER_RT_HAS_TSAN TRUE)' 'set(COMPILER_RT_HAS_TSAN FALSE)'
+  '' + stdenv.lib.optionalString (useLLVM) ''
+    substituteInPlace lib/builtins/int_util.c \
+      --replace "#include <stdlib.h>" ""
+    substituteInPlace lib/builtins/clear_cache.c \
+      --replace "#include <assert.h>" ""
+    substituteInPlace lib/builtins/cpu_model.c \
+      --replace "#include <assert.h>" ""
   '';
 
   # Hack around weird upsream RPATH bug
-  postInstall = stdenv.lib.optionalString stdenv.isDarwin ''
+  postInstall = stdenv.lib.optionalString (stdenv.hostPlatform.isDarwin || stdenv.hostPlatform.isWasm) ''
     ln -s "$out/lib"/*/* "$out/lib"
+  '' + stdenv.lib.optionalString (useLLVM) ''
+    ln -s $out/lib/*/clang_rt.crtbegin-*.o $out/lib/linux/crtbegin.o
+    ln -s $out/lib/*/clang_rt.crtend-*.o $out/lib/linux/crtend.o
+    ln -s $out/lib/*/clang_rt.crtbegin_shared-*.o $out/lib/linux/crtbeginS.o
+    ln -s $out/lib/*/clang_rt.crtend_shared-*.o $out/lib/linux/crtendS.o
   '';
 
   enableParallelBuilding = true;
diff --git a/pkgs/development/compilers/llvm/6/default.nix b/pkgs/development/compilers/llvm/6/default.nix
index ba704f972c31..b544a4f6ba69 100644
--- a/pkgs/development/compilers/llvm/6/default.nix
+++ b/pkgs/development/compilers/llvm/6/default.nix
@@ -1,4 +1,4 @@
-{ lowPrio, newScope, pkgs, stdenv, cmake, libstdcxxHook
+{ lowPrio, newScope, pkgs, stdenv, cmake, gcc, libstdcxxHook
 , libxml2, python3, isl, fetchurl, overrideCC, wrapCCWith
 , buildLlvmTools # tools, but from the previous stage, for cross
 , targetLlvmLibraries # libraries, but from the next stage, for cross
@@ -7,6 +7,7 @@
 let
   release_version = "6.0.1";
   version = release_version; # differentiating these is important for rc's
+  targetConfig = stdenv.targetPlatform.config;
 
   fetch = name: sha256: fetchurl {
     url = "https://releases.llvm.org/${release_version}/${name}-${version}.src.tar.xz";
@@ -56,7 +57,12 @@ let
       extraPackages = [
         targetLlvmLibraries.compiler-rt
       ];
-      extraBuildCommands = mkExtraBuildCommands cc;
+      extraBuildCommands = ''
+          echo "-target ${targetConfig}" >> $out/nix-support/cc-cflags
+          echo "-B${gcc.cc}/lib/gcc/${targetConfig}/${gcc.version}" >> $out/nix-support/cc-cflags
+          echo "-L${gcc.cc}/lib/gcc/${targetConfig}/${gcc.version}" >> $out/nix-support/cc-ldflags
+          echo "-L${gcc.cc.lib}/${targetConfig}/lib" >> $out/nix-support/cc-ldflags
+      '' + mkExtraBuildCommands cc;
     };
 
     libcxxClang = wrapCCWith rec {
diff --git a/pkgs/development/compilers/llvm/6/libc++/default.nix b/pkgs/development/compilers/llvm/6/libc++/default.nix
index 40f91c4d6aef..57f1431f4711 100644
--- a/pkgs/development/compilers/llvm/6/libc++/default.nix
+++ b/pkgs/development/compilers/llvm/6/libc++/default.nix
@@ -45,7 +45,7 @@ stdenv.mkDerivation {
   ];
 
   meta = {
-    homepage = "http://libcxx.llvm.org/";
+    homepage = "https://libcxx.llvm.org/";
     description = "A new implementation of the C++ standard library, targeting C++11";
     license = with stdenv.lib.licenses; [ ncsa mit ];
     platforms = stdenv.lib.platforms.unix;
diff --git a/pkgs/development/compilers/llvm/6/libc++abi.nix b/pkgs/development/compilers/llvm/6/libc++abi.nix
index f8d0d2e0cee8..246bc6153e59 100644
--- a/pkgs/development/compilers/llvm/6/libc++abi.nix
+++ b/pkgs/development/compilers/llvm/6/libc++abi.nix
@@ -25,7 +25,7 @@ stdenv.mkDerivation {
         # this should be done in CMake, but having trouble figuring out
         # the magic combination of necessary CMake variables
         # if you fancy a try, take a look at
-        # http://www.cmake.org/Wiki/CMake_RPATH_handling
+        # https://gitlab.kitware.com/cmake/community/-/wikis/doc/cmake/RPATH-handling
         install_name_tool -id $out/$file $file
       done
       make install
@@ -42,7 +42,7 @@ stdenv.mkDerivation {
     '';
 
   meta = {
-    homepage = "http://libcxxabi.llvm.org/";
+    homepage = "https://libcxxabi.llvm.org/";
     description = "A new implementation of low level support for a standard C++ library";
     license = with stdenv.lib.licenses; [ ncsa mit ];
     maintainers = with stdenv.lib.maintainers; [ vlstill ];
diff --git a/pkgs/development/compilers/llvm/6/lld.nix b/pkgs/development/compilers/llvm/6/lld.nix
index e00b71bc33e4..81b94df31194 100644
--- a/pkgs/development/compilers/llvm/6/lld.nix
+++ b/pkgs/development/compilers/llvm/6/lld.nix
@@ -26,7 +26,7 @@ stdenv.mkDerivation {
 
   meta = {
     description = "The LLVM Linker";
-    homepage    = "http://lld.llvm.org/";
+    homepage    = "https://lld.llvm.org/";
     license     = stdenv.lib.licenses.ncsa;
     platforms   = stdenv.lib.platforms.all;
   };
diff --git a/pkgs/development/compilers/llvm/6/lldb.nix b/pkgs/development/compilers/llvm/6/lldb.nix
index 0445dfed47f5..80e298eaf8c0 100644
--- a/pkgs/development/compilers/llvm/6/lldb.nix
+++ b/pkgs/development/compilers/llvm/6/lldb.nix
@@ -50,7 +50,7 @@ stdenv.mkDerivation {
 
   meta = with stdenv.lib; {
     description = "A next-generation high-performance debugger";
-    homepage    = "http://llvm.org/";
+    homepage    = "https://llvm.org/";
     license     = licenses.ncsa;
     platforms   = platforms.all;
   };
diff --git a/pkgs/development/compilers/llvm/6/llvm.nix b/pkgs/development/compilers/llvm/6/llvm.nix
index e1e40c8456d5..9f3b5e5ba0d0 100644
--- a/pkgs/development/compilers/llvm/6/llvm.nix
+++ b/pkgs/development/compilers/llvm/6/llvm.nix
@@ -149,7 +149,7 @@ stdenv.mkDerivation ({
 
   meta = {
     description = "Collection of modular and reusable compiler and toolchain technologies";
-    homepage    = "http://llvm.org/";
+    homepage    = "https://llvm.org/";
     license     = stdenv.lib.licenses.ncsa;
     maintainers = with stdenv.lib.maintainers; [ lovek323 raskin dtzWill ];
     platforms   = stdenv.lib.platforms.all;
diff --git a/pkgs/development/compilers/llvm/6/openmp.nix b/pkgs/development/compilers/llvm/6/openmp.nix
index efc5553b1d66..c1a4480a5524 100644
--- a/pkgs/development/compilers/llvm/6/openmp.nix
+++ b/pkgs/development/compilers/llvm/6/openmp.nix
@@ -19,7 +19,7 @@ stdenv.mkDerivation {
 
   meta = {
     description = "Components required to build an executable OpenMP program";
-    homepage    = "http://openmp.llvm.org/";
+    homepage    = "https://openmp.llvm.org/";
     license     = stdenv.lib.licenses.mit;
     platforms   = stdenv.lib.platforms.all;
   };