From 2a456d16c035fa406de8f49bef2f18bd68b19a67 Mon Sep 17 00:00:00 2001
From: Wenbing Li <10278425+wenbingl@users.noreply.github.com>
Date: Mon, 14 Sep 2020 10:32:39 -0700
Subject: [PATCH] Enable onnxruntime iOS shared library build. (#5148)

---
 cmake/onnxruntime.cmake | 16 ++++++++++++++--
 tools/ci_build/build.py |  1 +
 2 files changed, 15 insertions(+), 2 deletions(-)

diff --git a/cmake/onnxruntime.cmake b/cmake/onnxruntime.cmake
index 8d1c5211c0..31a6699fba 100644
--- a/cmake/onnxruntime.cmake
+++ b/cmake/onnxruntime.cmake
@@ -9,6 +9,9 @@ else()
   set(OUTPUT_STYLE vc)
 endif()
 
+if (${CMAKE_SYSTEM_NAME} STREQUAL "iOS")
+  set(CMAKE_SHARED_LIBRARY_RUNTIME_C_FLAG "-Wl,-rpath,")
+endif()
 
 #If you want to verify if there is any extra line in symbols.txt, run
 # nm -C -g --defined libonnxruntime.so |grep -v '\sA\s' | cut -f 3 -d ' ' | sort
@@ -61,8 +64,17 @@ else()
 endif()
 
 if (NOT WIN32)
-  if (APPLE OR ${CMAKE_SYSTEM_NAME} MATCHES "iOSCross")
-    set_target_properties(onnxruntime PROPERTIES INSTALL_RPATH "@loader_path")
+  if (APPLE OR ${CMAKE_SYSTEM_NAME} MATCHES "^iOS")
+    if (${CMAKE_SYSTEM_NAME} STREQUAL "iOS")
+      set_target_properties(onnxruntime PROPERTIES
+        SOVERSION ${ORT_VERSION}
+        MACOSX_RPATH TRUE
+        INSTALL_RPATH_USE_LINK_PATH FALSE
+        BUILD_WITH_INSTALL_NAME_DIR TRUE
+        INSTALL_NAME_DIR @rpath)
+    else()
+        set_target_properties(onnxruntime PROPERTIES INSTALL_RPATH "@loader_path")
+    endif()
   else()
     set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -Wl,-rpath='$ORIGIN'")
   endif()
diff --git a/tools/ci_build/build.py b/tools/ci_build/build.py
index 5a2b347738..7b7bbea59e 100755
--- a/tools/ci_build/build.py
+++ b/tools/ci_build/build.py
@@ -756,6 +756,7 @@ def generate_build_tree(cmake_path, source_dir, build_dir, cuda_home, cudnn_home
                         if not cond))
             cmake_args += [
                 "-DCMAKE_SYSTEM_NAME=iOS",
+                "-Donnxruntime_BUILD_SHARED_LIB=ON",
                 "-Donnxruntime_BUILD_UNIT_TESTS=OFF",
                 "-DCMAKE_OSX_SYSROOT=" + args.ios_sysroot,
                 "-DCMAKE_OSX_ARCHITECTURES=" + args.osx_arch,