llvmPackages_git: move everything to common

pkgs/development/compilers/llvm/12/default.nix

@@ -1,5 +1,6 @@
 { lowPrio, newScope, pkgs, lib, stdenv, cmake
 , preLibcCrossHeaders
+, substitute, fetchFromGitHub, fetchpatch
 , libxml2, python3, isl, fetchurl, overrideCC, wrapCCWith, wrapBintoolsWith
 , buildLlvmTools # tools, but from the previous stage, for cross
 , targetLlvmLibraries # libraries, but from the next stage, for cross
@@ -114,7 +115,11 @@ let
       extraBuildCommands = mkExtraBuildCommands cc;
     };
 
-    lld = callPackage ./lld {
+    lld = callPackage ../common/lld {
+      src = fetch "lld" "0qg3fgc7wj34hdkqn21y03zcmsdd01szhhm1hfki63iifrm3y2v9";
+      patches = [
+        ./lld/gnu-install-dirs.patch
+      ];
       inherit llvm_meta;
       inherit (libraries) libunwind;
     };
@@ -253,18 +258,57 @@ let
 
     libcxxStdenv = overrideCC stdenv buildLlvmTools.libcxxClang;
 
-    libcxx = callPackage ./libcxx {
+    libcxx = callPackage ../common/libcxx {
+      src = fetchFromGitHub {
+        owner = "llvm";
+        repo = "llvm-project";
+        rev = "refs/tags/llvmorg-${version}";
+        sparseCheckout = [
+          "libcxx"
+          "libcxxabi"
+          "llvm/cmake"
+          "llvm/utils"
+          "runtimes"
+        ];
+        hash = "sha256-etxgXIdWxMTmbZ83Hsc0w6Jt5OSQSUEPVEWqLkHsNBY=";
+      };
+      patches = [
+        (substitute {
+          src = ../common/libcxxabi/wasm.patch;
+          replacements = [
+            "--replace-fail" "/cmake/" "/llvm/cmake/"
+          ];
+        })
+      ] ++ lib.optionals stdenv.hostPlatform.isMusl [
+        (substitute {
+          src = ../common/libcxx/libcxx-0001-musl-hacks.patch;
+          replacements = [
+            "--replace-fail" "/include/" "/libcxx/include/"
+          ];
+        })
+      ];
       inherit llvm_meta;
       stdenv = overrideCC stdenv buildLlvmTools.clangNoLibcxx;
     };
 
-    libunwind = callPackage ./libunwind {
+    libunwind = callPackage ../common/libunwind {
+      src = fetch "libunwind" "192ww6n81lj2mb9pj4043z79jp3cf58a9c2qrxjwm5c3a64n1shb";
+      patches = [
+        ./libunwind/gnu-install-dirs.patch
+      ];
       inherit llvm_meta;
-      inherit (buildLlvmTools) llvm;
       stdenv = overrideCC stdenv buildLlvmTools.clangNoLibcxx;
     };
 
-    openmp = callPackage ./openmp {
+    openmp = callPackage ../common/openmp {
+      src = fetch "openmp" "14dh0r6h2xh747ffgnsl4z08h0ri04azi9vf79cbz7ma1r27kzk0";
+      patches = [
+        # Fix cross.
+        (fetchpatch {
+          url = "https://github.com/llvm/llvm-project/commit/5e2358c781b85a18d1463fd924d2741d4ae5e42e.patch";
+          hash = "sha256-UxIlAifXnexF/MaraPW0Ut6q+sf3e7y1fMdEv1q103A=";
+        })
+      ];
       inherit llvm_meta targetLlvm;
     };
   });

pkgs/development/compilers/llvm/13/default.nix

@@ -1,5 +1,6 @@
 { lowPrio, newScope, pkgs, lib, stdenv, cmake
 , preLibcCrossHeaders
+, fetchpatch
 , libxml2, python3, isl, fetchFromGitHub, overrideCC, wrapCCWith, wrapBintoolsWith
 , buildLlvmTools # tools, but from the previous stage, for cross
 , targetLlvmLibraries # libraries, but from the next stage, for cross
@@ -142,7 +143,10 @@ in let
       extraBuildCommands = mkExtraBuildCommands cc;
     };
 
-    lld = callPackage ./lld {
+    lld = callPackage ../common/lld {
+      patches = [
+        ./lld/gnu-install-dirs.patch
+      ];
       inherit llvm_meta;
     };
 
@@ -299,12 +303,22 @@ in let
       monorepoSrc = src;
     };
 
-    libunwind = callPackage ./libunwind {
+    libunwind = callPackage ../common/libunwind {
+      patches = [
+        ./libunwind/gnu-install-dirs.patch
+      ];
       inherit llvm_meta;
       stdenv = overrideCC stdenv buildLlvmTools.clangNoLibcxx;
     };
 
-    openmp = callPackage ./openmp {
+    openmp = callPackage ../common/openmp {
+      patches = [
+        # Fix cross.
+        (fetchpatch {
+          url = "https://github.com/llvm/llvm-project/commit/5e2358c781b85a18d1463fd924d2741d4ae5e42e.patch";
+          hash = "sha256-UxIlAifXnexF/MaraPW0Ut6q+sf3e7y1fMdEv1q103A=";
+        })
+      ];
       inherit llvm_meta targetLlvm;
     };
   });

pkgs/development/compilers/llvm/14/default.nix

@@ -139,7 +139,11 @@ in let
       extraBuildCommands = mkExtraBuildCommands cc;
     };
 
-    lld = callPackage ./lld {
+    lld = callPackage ../common/lld {
+      patches = [
+        ./lld/gnu-install-dirs.patch
+        ./lld/fix-root-src-dir.patch
+      ];
       inherit llvm_meta;
     };
 
@@ -297,12 +301,19 @@ in let
       stdenv = overrideCC stdenv buildLlvmTools.clangNoLibcxx;
     };
 
-    libunwind = callPackage ./libunwind {
+    libunwind = callPackage ../common/libunwind {
+      patches = [
+        ./libunwind/gnu-install-dirs.patch
+      ];
       inherit llvm_meta;
       stdenv = overrideCC stdenv buildLlvmTools.clangNoLibcxx;
     };
 
-    openmp = callPackage ./openmp {
+    openmp = callPackage ../common/openmp {
+      patches = [
+        ./openmp/gnu-install-dirs.patch
+        ./openmp/run-lit-directly.patch
+      ];
       inherit llvm_meta targetLlvm;
     };
   });