Prefer CMAKE_OSX_ARCHITECTURES

Author: ihnorton

src/cmake/Modules/FindTileDB_EP.cmake

@@ -55,11 +55,17 @@ else()
           SET(DOWNLOAD_URL "https://github.com/TileDB-Inc/TileDB/releases/download/2.16.3/tiledb-windows-x86_64-2.16.3-194b5ae.zip")
           SET(DOWNLOAD_SHA1 "8e986b6143ef9509201c7f2b3c0a7a53ff41095a")
         elseif(APPLE) # OSX
+          if (DEFINED CMAKE_OSX_ARCHITECTURES)
+            set(ACTUAL_TARGET ${CMAKE_OSX_ARCHITECTURES})
+          else()
+            set(ACTUAL_TARGET ${CMAKE_SYSTEM_PROCESSOR})
+          endif()
+
 
-          if (CMAKE_OSX_ARCHITECTURES STREQUAL x86_64 OR CMAKE_SYSTEM_PROCESSOR MATCHES "(x86_64)|(AMD64|amd64)|(^i.86$)")
+          if (ACTUAL_TARGET MATCHES "(x86_64)|(AMD64|amd64)|(^i.86$)")
             SET(DOWNLOAD_URL "https://github.com/TileDB-Inc/TileDB/releases/download/2.16.3/tiledb-macos-x86_64-2.16.3-194b5ae.tar.gz")
             SET(DOWNLOAD_SHA1 "b4d35306771d1c30b49bf2a98651e8e24c91037e")
-          elseif (CMAKE_OSX_ARCHITECTURES STREQUAL arm64 OR CMAKE_SYSTEM_PROCESSOR MATCHES "^aarch64" OR CMAKE_SYSTEM_PROCESSOR MATCHES "^arm")
+          elseif (ACTUAL_TARGET STREQUAL arm64 OR ACTUAL_TARGET MATCHES "^aarch64" OR CMAKE_SYSTEM_PROCESSOR MATCHES "^arm")
             SET(DOWNLOAD_URL "https://github.com/TileDB-Inc/TileDB/releases/download/2.16.3/tiledb-macos-arm64-2.16.3-194b5ae.tar.gz")
             SET(DOWNLOAD_SHA1 "1f3f0e7660ed54b8988bdfcc4876021bf57d58da")
           endif()