diff --git a/tools/build.sh b/tools/build.sh
index ce330e6d631ea1009f28ccf987a50e5f79a032b6..54680f50efd04272b183c738541b9153b9e74416 100755
--- a/tools/build.sh
+++ b/tools/build.sh
@@ -38,7 +38,8 @@ build_for_android() {
     fi
 
     if [ -z "$PLATFORM" ]; then
-        PLATFORM="arm-v7a"  # Users could choose "arm-v8a" or other platforms from the command line.
+        PLATFORM="arm-v7a"  # Users could choose "arm-v8a" platform.
+#        PLATFORM="arm-v8a"
     fi
 
     if [ "${PLATFORM}" = "arm-v7a" ]; then
@@ -92,23 +93,28 @@ build_for_ios() {
 #    rm -rf "../build"
     PLATFORM="ios"
     MODE="Release"
-    BUILD_DIR=../build/release/"${PLATFORM}"
+#    IOS_ARCH="armv7"
+#    IOS_ARCH="armv7s"
+    IOS_ARCH="arm64"    # Users could choose "armv7" or "armv7s" platforms.
+    BUILD_DIR=../build/release/"${PLATFORM}"/"${IOS_ARCH}"
     TOOLCHAIN_FILE="./tools/ios-cmake/ios.toolchain.cmake"
     mkdir -p "${BUILD_DIR}"
     if [ $# -eq 1 ]; then
         cmake .. \
             -B"${BUILD_DIR}" \
             -DCMAKE_BUILD_TYPE="${MODE}" \
-            -DCMAKE_TOOLCHAIN_FILE="${TOOLCHAIN_FILE}" \
             -DIOS_PLATFORM=OS \
+            -DIOS_ARCH="${IOS_ARCH}" \
+            -DCMAKE_TOOLCHAIN_FILE="${TOOLCHAIN_FILE}" \
             -DNET=$1 \
             -DIS_IOS="true"
     else
         cmake .. \
             -B"${BUILD_DIR}" \
             -DCMAKE_BUILD_TYPE="${MODE}" \
-            -DCMAKE_TOOLCHAIN_FILE="${TOOLCHAIN_FILE}" \
             -DIOS_PLATFORM=OS \
+            -DIOS_ARCH="${IOS_ARCH}" \
+            -DCMAKE_TOOLCHAIN_FILE="${TOOLCHAIN_FILE}" \
             -DIS_IOS="true"
     fi
     cd "${BUILD_DIR}"
diff --git a/tools/ios-cmake/ios.toolchain.cmake b/tools/ios-cmake/ios.toolchain.cmake
index a4f58c37de510f700645ba7184b280f6eb1e11c2..a81f066c11b3ad6614b8df3ee2c18f80469d1cd2 100644
--- a/tools/ios-cmake/ios.toolchain.cmake
+++ b/tools/ios-cmake/ios.toolchain.cmake
@@ -159,7 +159,6 @@ set (CMAKE_OSX_SYSROOT ${CMAKE_IOS_SDK_ROOT} CACHE PATH "Sysroot used for iOS su
 
 # set the architecture for iOS
 if (${IOS_PLATFORM} STREQUAL "OS")
-  set (IOS_ARCH armv7 armv7s)
 elseif (${IOS_PLATFORM} STREQUAL "SIMULATOR")
   set (IOS_ARCH i386)
 elseif (${IOS_PLATFORM} STREQUAL "SIMULATOR64")