compiler-rt: build builtins on darwin

The missing xcrun meant builtins were missing from darwin. This
apparently wasn't an issue until now, but is in projects using
`@available` checks. (The ARM64 hack was apparently the previous
solution to fixing broken SDK detection.)

pkgs/development/compilers/llvm/11/compiler-rt/default.nix

@@ -1,4 +1,4 @@
-{ lib, stdenv, llvm_meta, version, fetch, cmake, python3, libllvm, libcxxabi }:
+{ lib, stdenv, llvm_meta, version, fetch, cmake, python3, xcbuild, libllvm, libcxxabi }:
 
 let
 
@@ -15,7 +15,8 @@ stdenv.mkDerivation {
   inherit version;
   src = fetch "compiler-rt" "0x1j8ngf1zj63wlnns9vlibafq48qcm72p4jpaxkmkb4qw0grwfy";
 
-  nativeBuildInputs = [ cmake python3 libllvm.dev ];
+  nativeBuildInputs = [ cmake python3 libllvm.dev ]
+     ++ lib.optional stdenv.isDarwin xcbuild.xcrun;
 
   NIX_CFLAGS_COMPILE = [
     "-DSCUDO_DEFAULT_OPTIONS=DeleteSizeMismatch=0:DeallocationTypeMismatch=0"
@@ -59,8 +60,9 @@ stdenv.mkDerivation {
     # extra `/`.
     ./normalize-var.patch
     ../../common/compiler-rt/libsanitizer-no-cyclades-11.patch
-  ] ++ lib.optional stdenv.hostPlatform.isAarch32 ./armv7l.patch;
-
+    ../../common/compiler-rt/darwin-plistbuddy-workaround.patch
+    ./armv7l.patch
+  ];
 
   preConfigure = lib.optionalString stdenv.hostPlatform.isDarwin ''
     cmakeFlagsArray+=("-DCMAKE_LIPO=$(command -v ${stdenv.cc.targetPrefix}lipo)")
@@ -75,8 +77,6 @@ stdenv.mkDerivation {
     substituteInPlace cmake/builtin-config-ix.cmake \
       --replace 'set(X86 i386)' 'set(X86 i386 i486 i586 i686)'
   '' + lib.optionalString stdenv.isDarwin ''
-    substituteInPlace cmake/builtin-config-ix.cmake \
-      --replace 'foreach(arch ''${ARM64})' 'foreach(arch)'
     substituteInPlace cmake/config-ix.cmake \
       --replace 'set(COMPILER_RT_HAS_TSAN TRUE)' 'set(COMPILER_RT_HAS_TSAN FALSE)'
   '' + lib.optionalString (useLLVM) ''

pkgs/development/compilers/llvm/12/compiler-rt/default.nix

@@ -1,4 +1,4 @@
-{ lib, stdenv, llvm_meta, version, fetch, cmake, python3, libllvm, libcxxabi }:
+{ lib, stdenv, llvm_meta, version, fetch, cmake, python3, xcbuild, libllvm, libcxxabi }:
 
 let
 
@@ -14,7 +14,8 @@ stdenv.mkDerivation {
   inherit version;
   src = fetch "compiler-rt" "1950rg294izdwkaasi7yjrmadc9mzdd5paf0q63jjcq2m3rdbj5l";
 
-  nativeBuildInputs = [ cmake python3 libllvm.dev ];
+  nativeBuildInputs = [ cmake python3 libllvm.dev ]
+    ++ lib.optional stdenv.isDarwin xcbuild.xcrun;
   buildInputs = lib.optional stdenv.hostPlatform.isDarwin libcxxabi;
 
   NIX_CFLAGS_COMPILE = [
@@ -59,7 +60,9 @@ stdenv.mkDerivation {
     # ld-wrapper dislikes `-rpath-link //nix/store`, so we normalize away the
     # extra `/`.
     ./normalize-var.patch
-  ] ++ lib.optional stdenv.hostPlatform.isAarch32 ./armv7l.patch;
+    ../../common/compiler-rt/darwin-plistbuddy-workaround.patch
+    ./armv7l.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
@@ -70,8 +73,6 @@ stdenv.mkDerivation {
     substituteInPlace cmake/builtin-config-ix.cmake \
       --replace 'set(X86 i386)' 'set(X86 i386 i486 i586 i686)'
   '' + lib.optionalString stdenv.isDarwin ''
-    substituteInPlace cmake/builtin-config-ix.cmake \
-      --replace 'set(ARM64 arm64 arm64e)' 'set(ARM64)'
     substituteInPlace cmake/config-ix.cmake \
       --replace 'set(COMPILER_RT_HAS_TSAN TRUE)' 'set(COMPILER_RT_HAS_TSAN FALSE)'
   '' + lib.optionalString (useLLVM) ''

pkgs/development/compilers/llvm/13/compiler-rt/default.nix

@@ -1,4 +1,4 @@
-{ lib, stdenv, llvm_meta, version, src, cmake, python3, libllvm, libcxxabi }:
+{ lib, stdenv, llvm_meta, version, src, cmake, python3, xcbuild, libllvm, libcxxabi }:
 
 let
 
@@ -16,7 +16,8 @@ stdenv.mkDerivation {
   inherit src;
   sourceRoot = "source/compiler-rt";
 
-  nativeBuildInputs = [ cmake python3 libllvm.dev ];
+  nativeBuildInputs = [ cmake python3 libllvm.dev ]
+    ++ lib.optional stdenv.isDarwin xcbuild.xcrun;
   buildInputs = lib.optional stdenv.hostPlatform.isDarwin libcxxabi;
 
   NIX_CFLAGS_COMPILE = [
@@ -62,9 +63,11 @@ stdenv.mkDerivation {
     # ld-wrapper dislikes `-rpath-link //nix/store`, so we normalize away the
     # extra `/`.
     ./normalize-var.patch
-  ] # Prevent a compilation error on darwin
-    ++ lib.optional stdenv.hostPlatform.isDarwin ./darwin-targetconditionals.patch
-    ++ lib.optional stdenv.hostPlatform.isAarch32 ./armv7l.patch;
+    # Prevent a compilation error on darwin
+    ./darwin-targetconditionals.patch
+    ../../common/compiler-rt/darwin-plistbuddy-workaround.patch
+    ./armv7l.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
@@ -75,8 +78,6 @@ stdenv.mkDerivation {
     substituteInPlace cmake/builtin-config-ix.cmake \
       --replace 'set(X86 i386)' 'set(X86 i386 i486 i586 i686)'
   '' + lib.optionalString stdenv.isDarwin ''
-    substituteInPlace cmake/builtin-config-ix.cmake \
-      --replace 'set(ARM64 arm64 arm64e)' 'set(ARM64)'
     substituteInPlace cmake/config-ix.cmake \
       --replace 'set(COMPILER_RT_HAS_TSAN TRUE)' 'set(COMPILER_RT_HAS_TSAN FALSE)'
   '' + lib.optionalString (useLLVM) ''

pkgs/development/compilers/llvm/14/compiler-rt/default.nix

@@ -1,6 +1,6 @@
 { lib, stdenv, llvm_meta, version
 , monorepoSrc, runCommand
-, cmake, python3, libllvm, libcxxabi
+, cmake, python3, xcbuild, libllvm, libcxxabi
 }:
 
 let
@@ -26,7 +26,8 @@ stdenv.mkDerivation {
   inherit src;
   sourceRoot = "${src.name}/${baseName}";
 
-  nativeBuildInputs = [ cmake python3 libllvm.dev ];
+  nativeBuildInputs = [ cmake python3 libllvm.dev ]
+    ++ lib.optional stdenv.isDarwin xcbuild.xcrun;
   buildInputs = lib.optional stdenv.hostPlatform.isDarwin libcxxabi;
 
   NIX_CFLAGS_COMPILE = [
@@ -72,9 +73,11 @@ stdenv.mkDerivation {
     # ld-wrapper dislikes `-rpath-link //nix/store`, so we normalize away the
     # extra `/`.
     ./normalize-var.patch
-  ] # Prevent a compilation error on darwin
-    ++ lib.optional stdenv.hostPlatform.isDarwin ./darwin-targetconditionals.patch
-    ++ lib.optional stdenv.hostPlatform.isAarch32 ./armv7l.patch;
+    # Prevent a compilation error on darwin
+    ./darwin-targetconditionals.patch
+    ../../common/compiler-rt/darwin-plistbuddy-workaround.patch
+    ./armv7l.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
@@ -85,8 +88,6 @@ stdenv.mkDerivation {
     substituteInPlace cmake/builtin-config-ix.cmake \
       --replace 'set(X86 i386)' 'set(X86 i386 i486 i586 i686)'
   '' + lib.optionalString stdenv.isDarwin ''
-    substituteInPlace cmake/builtin-config-ix.cmake \
-      --replace 'set(ARM64 arm64 arm64e)' 'set(ARM64)'
     substituteInPlace cmake/config-ix.cmake \
       --replace 'set(COMPILER_RT_HAS_TSAN TRUE)' 'set(COMPILER_RT_HAS_TSAN FALSE)'
   '' + lib.optionalString (useLLVM) ''

pkgs/development/compilers/llvm/common/compiler-rt/darwin-plistbuddy-workaround.patch

@@ -0,0 +1,25 @@
+CMake tries to read a list field from SDKSettings.plist, but the output of
+xcbuild PlistBuddy is incompatible with Apple's. (Plus we don't want it in our
+dependencies.)
+
+Simply assume ARM64 is supported by the SDK. We already limit the actual archs
+we build for by setting DARWIN_osx_BUILTIN_ARCHS explicitely.
+
+--- a/cmake/builtin-config-ix.cmake
++++ b/cmake/builtin-config-ix.cmake
+@@ -97,14 +97,7 @@ if(APPLE)
+   set(DARWIN_osx_BUILTIN_MIN_VER 10.5)
+   set(DARWIN_osx_BUILTIN_MIN_VER_FLAG
+       -mmacosx-version-min=${DARWIN_osx_BUILTIN_MIN_VER})
+-  set(DARWIN_osx_BUILTIN_ALL_POSSIBLE_ARCHS ${X86} ${X86_64})
+-  # Add support for arm64 macOS if available in SDK.
+-  foreach(arch ${ARM64})
+-    sdk_has_arch_support(${DARWIN_osx_SYSROOT} macosx ${arch} MACOS_ARM_SUPPORT)
+-    if (MACOS_ARM_SUPPORT)
+-     list(APPEND DARWIN_osx_BUILTIN_ALL_POSSIBLE_ARCHS ${arch})
+-    endif()
+-  endforeach(arch)
++  set(DARWIN_osx_BUILTIN_ALL_POSSIBLE_ARCHS ${X86} ${X86_64} ${ARM64})
+ 
+   if(COMPILER_RT_ENABLE_IOS)
+     list(APPEND DARWIN_EMBEDDED_PLATFORMS ios)

pkgs/development/compilers/llvm/git/compiler-rt/default.nix

@@ -1,6 +1,6 @@
 { lib, stdenv, llvm_meta, version
 , monorepoSrc, runCommand
-, cmake, python3, libllvm, libcxxabi
+, cmake, python3, xcbuild, libllvm, libcxxabi
 }:
 
 let
@@ -26,7 +26,8 @@ stdenv.mkDerivation {
   inherit src;
   sourceRoot = "${src.name}/${baseName}";
 
-  nativeBuildInputs = [ cmake python3 libllvm.dev ];
+  nativeBuildInputs = [ cmake python3 libllvm.dev ]
+    ++ lib.optional stdenv.isDarwin xcbuild.xcrun;
   buildInputs = lib.optional stdenv.hostPlatform.isDarwin libcxxabi;
 
   NIX_CFLAGS_COMPILE = [
@@ -72,9 +73,11 @@ stdenv.mkDerivation {
     # ld-wrapper dislikes `-rpath-link //nix/store`, so we normalize away the
     # extra `/`.
     ./normalize-var.patch
-  ] # Prevent a compilation error on darwin
-    ++ lib.optional stdenv.hostPlatform.isDarwin ./darwin-targetconditionals.patch
-    ++ lib.optional stdenv.hostPlatform.isAarch32 ./armv7l.patch;
+    # Prevent a compilation error on darwin
+    ./darwin-targetconditionals.patch
+    ../../common/compiler-rt/darwin-plistbuddy-workaround.patch
+    ./armv7l.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
@@ -85,8 +88,6 @@ stdenv.mkDerivation {
     substituteInPlace cmake/builtin-config-ix.cmake \
       --replace 'set(X86 i386)' 'set(X86 i386 i486 i586 i686)'
   '' + lib.optionalString stdenv.isDarwin ''
-    substituteInPlace cmake/builtin-config-ix.cmake \
-      --replace 'set(ARM64 arm64 arm64e)' 'set(ARM64)'
     substituteInPlace cmake/config-ix.cmake \
       --replace 'set(COMPILER_RT_HAS_TSAN TRUE)' 'set(COMPILER_RT_HAS_TSAN FALSE)'
   '' + lib.optionalString (useLLVM) ''