Upgrade to OSX 10.14 for jll (rust-lang#1000)

Author: vchuravy

.packaging/build_tarballs.jl

@@ -14,7 +14,11 @@ version = VersionNumber(split(auto_version, "/")[end])
 llvm_versions = [v"11.0.1", v"12.0.1", v"13.0.1", v"14.0.2", v"15.0.7"]
 
 # Collection of sources required to build attr
-sources = [GitSource(repo, "%ENZYME_HASH%")]
+sources = [
+    GitSource(repo, "%ENZYME_HASH%"),
+    ArchiveSource("https://github.com/phracker/MacOSX-SDKs/releases/download/10.15/MacOSX10.14.sdk.tar.xz",
+                  "0f03869f72df8705b832910517b47dd5b79eb4e160512602f593ed243b28715f"),
+]
 
 # These are the platforms we will build for by default, unless further
 # platforms are passed in on the command line
@@ -24,6 +28,16 @@ platforms = expand_cxxstring_abis(supported_platforms(; experimental=true))
 script = raw"""
 cd Enzyme
 
+if [[ "${bb_full_target}" == x86_64-apple-darwin*llvm_version+15.asserts* ]]; then
+    # LLVM 15 requires macOS SDK 10.14.
+    pushd $WORKSPACE/srcdir/MacOSX10.*.sdk
+    rm -rf /opt/${target}/${target}/sys-root/System
+    cp -ra usr/* "/opt/${target}/${target}/sys-root/usr/."
+    cp -ra System "/opt/${target}/${target}/sys-root/."
+    export MACOSX_DEPLOYMENT_TARGET=10.14
+    popd
+fi
+
 # 1. Build HOST
 NATIVE_CMAKE_FLAGS=()
 NATIVE_CMAKE_FLAGS+=(-DENZYME_CLANG=ON)