Restructure MacOS framework package to fix malformed Framework errors (…

…microsoft#21536)

### Description

Refactor framework directory structure for MacOS packages

### Motivation and Context
<!-- - Why is this change required? What problem does it solve?
- If it fixes an open issue, please link to the issue here. -->
Apple started enforcing specific [framework
structure](https://developer.apple.com/library/archive/documentation/MacOSX/Conceptual/BPFrameworks/Concepts/FrameworkAnatomy.html)
for MacOS packages. We need to change how we package for MacOS to follow
the guidelines

Fixes following issue: [Malformed
Framework](microsoft/onnxruntime-swift-package-manager#19
)

tools/ci_build/github/apple/assemble_apple_packaging_artifacts.sh

@@ -23,10 +23,36 @@ ORT_POD_VERSION=${4:?${USAGE_TEXT}}
 POD_ARCHIVE_BASENAME="pod-archive-${POD_NAME}-${ORT_POD_VERSION}.zip"
 PODSPEC_BASENAME="${POD_NAME}.podspec"
 
+
+# Macos requires a different structure for the framework
+# This will create the necessary symlinks for the macos framework before packaging
+# Adding the symlinks here rather than in the build script ensures that symlinks are not lost
+for MACOS_DIR in "${BINARIES_STAGING_DIR}/${POD_NAME}/onnxruntime.xcframework/macos"*; do
+  if [ -d "${MACOS_DIR}" ]; then
+    echo "Creating symlinks for ${MACOS_DIR}"
+    pushd "${MACOS_DIR}/onnxruntime.framework"
+
+    rm -rf Headers Resources onnxruntime
+    rm -rf Versions/Current
+
+    ln -sfn A Versions/Current
+    ln -sfn Versions/Current/Headers Headers
+    ln -sfn Versions/Current/Resources Resources
+    ln -sfn Versions/Current/onnxruntime onnxruntime
+
+    popd
+
+  fi
+done
+
+
+echo "Contents of ${BINARIES_STAGING_DIR}/${POD_NAME}:"
+ls -lR "${BINARIES_STAGING_DIR}/${POD_NAME}"
+
 pushd "${BINARIES_STAGING_DIR}/${POD_NAME}"
 
 # assemble the files in the artifacts staging directory
-zip -r "${ARTIFACTS_STAGING_DIR}/${POD_ARCHIVE_BASENAME}" ./* --exclude "${PODSPEC_BASENAME}"
+zip -r -y "${ARTIFACTS_STAGING_DIR}/${POD_ARCHIVE_BASENAME}" ./* --exclude "${PODSPEC_BASENAME}"
 cp "${PODSPEC_BASENAME}" "${ARTIFACTS_STAGING_DIR}/${PODSPEC_BASENAME}"
 
 popd

tools/ci_build/github/apple/build_apple_framework.py

@@ -89,18 +89,52 @@ def _build_for_apple_sysroot(
     pathlib.Path(framework_dir).mkdir(parents=True, exist_ok=True)
 
     # copy the Info.plist, framework_info.json, and header files
-    shutil.copy(info_plist_path, framework_dir)
-    shutil.copy(framework_info_path, os.path.dirname(framework_dir))
-    header_dir = os.path.join(framework_dir, "Headers")
-    pathlib.Path(header_dir).mkdir(parents=True, exist_ok=True)
-    for _header in headers:
-        shutil.copy(_header, header_dir)
-
-    # use lipo to create a fat ort library
-    lipo_command = ["lipo", "-create"]
-    lipo_command += ort_libs
-    lipo_command += ["-output", os.path.join(framework_dir, "onnxruntime")]
-    subprocess.run(lipo_command, shell=False, check=True)
+
+    # macos requires different framework structure:
+    # https://developer.apple.com/library/archive/documentation/MacOSX/Conceptual/BPFrameworks/Concepts/FrameworkAnatomy.html
+    if sysroot == "macosx" or sysroot == "macabi":
+        # create headers and resources directory
+        header_dir = os.path.join(framework_dir, "Versions", "A", "Headers")
+        resource_dir = os.path.join(framework_dir, "Versions", "A", "Resources")
+        pathlib.Path(header_dir).mkdir(parents=True, exist_ok=True)
+        pathlib.Path(resource_dir).mkdir(parents=True, exist_ok=True)
+
+        shutil.copy(info_plist_path, resource_dir)
+        shutil.copy(framework_info_path, os.path.dirname(framework_dir))
+
+        for _header in headers:
+            shutil.copy(_header, header_dir)
+
+        # use lipo to create a fat ort library
+        lipo_command = ["lipo", "-create"]
+        lipo_command += ort_libs
+        lipo_command += ["-output", os.path.join(framework_dir, "Versions", "A", "onnxruntime")]
+        subprocess.run(lipo_command, shell=False, check=True)
+
+        # create the symbolic link
+        pathlib.Path(os.path.join(framework_dir, "Versions", "Current")).symlink_to("A", target_is_directory=True)
+        pathlib.Path(os.path.join(framework_dir, "Headers")).symlink_to(
+            "Versions/Current/Headers", target_is_directory=True
+        )
+        pathlib.Path(os.path.join(framework_dir, "Resources")).symlink_to(
+            "Versions/Current/Resources", target_is_directory=True
+        )
+        pathlib.Path(os.path.join(framework_dir, "onnxruntime")).symlink_to("Versions/Current/onnxruntime")
+
+    else:
+        shutil.copy(info_plist_path, framework_dir)
+        shutil.copy(framework_info_path, os.path.dirname(framework_dir))
+        header_dir = os.path.join(framework_dir, "Headers")
+        pathlib.Path(header_dir).mkdir(parents=True, exist_ok=True)
+
+        for _header in headers:
+            shutil.copy(_header, header_dir)
+
+        # use lipo to create a fat ort library
+        lipo_command = ["lipo", "-create"]
+        lipo_command += ort_libs
+        lipo_command += ["-output", os.path.join(framework_dir, "onnxruntime")]
+        subprocess.run(lipo_command, shell=False, check=True)
 
     return framework_dir