diff --git a/android/acl/build.gradle b/android/acl/build.gradle
index 4eae1626b..f129e0ece 100644
--- a/android/acl/build.gradle
+++ b/android/acl/build.gradle
@@ -33,6 +33,7 @@ android {
                 arguments "-DCMAKE_BUILD_TYPE=RELEASE"
                 arguments "-DCMAKE_CXX_FLAGS_RELEASE=-O3"
                 arguments "-DCMAKE_C_FLAGS_RELEASE=-O3"
+                //arguments "-DCMAKE_VERBOSE_MAKEFILE=ON"
                 arguments "-DACL_CLIENT_ONLY=YES"
                 //cppFlags "-fexceptions"
                 //abiFilters 'armeabi', 'arm64-v8a', 'armeabi-v7a', 'x86'
diff --git a/android/acl/local.properties b/android/acl/local.properties
index 1f5d7d6f3..f0222fed8 100644
--- a/android/acl/local.properties
+++ b/android/acl/local.properties
@@ -4,6 +4,6 @@
 # Location of the SDK. This is only used by Gradle.
 # For customization when using a Version Control System, please read the
 # header note.
-#Wed Sep 18 17:20:23 CST 2019
-#ndk.dir=E\:\\tools\\android\\Sdk\\ndk-bundle
-sdk.dir=/Users/shuxinzheng/Library/Android/sdk
+#Tue Oct 15 16:48:29 CST 2019
+ndk.dir=/Users/shuxinzheng/Library/Android/sdk-3.5/ndk-bundle
+sdk.dir=/Users/shuxinzheng/Library/Android/sdk-3.5
diff --git a/build4android.sh b/build4android.sh
index 36235c188..2a8b43740 100755
--- a/build4android.sh
+++ b/build4android.sh
@@ -12,13 +12,14 @@
 #HAS_POLARSSL
 #HAS_POLARSSL_DLL
 
-cmake -DCMAKE_TOOLCHAIN_FILE=/data/zsx/android-ndk-r20/build/cmake/android.toolchain.cmake \
+cmake -DCMAKE_TOOLCHAIN_FILE=~/Library/Android/ndk-bundle-r20/build/cmake/android.toolchain.cmake \
 	-DANDROID_ABI="armeabi-v7a" \
 	-DANDROID_ARM_NEON=ON \
 	-DANDROID_PLATFORM=android-14 \
-	-DCMAKE_BUILD_TYPE=RELEASE \
 	-DCMAKE_SYSTEM_NAME=Android \
 	-DACL_CLIENT_ONLY=YES \
 	-DDISABLE_DB=YES \
-	-DHAS_POLARSSL_DLL=YES \
+	-DHAS_POLARSSL_DLL=NO \
+	-DCMAKE_BUILD_TYPE=RELEASE \
+	-DCMAKE_VERBOSE_MAKEFILE=ON \
 	..
diff --git a/lib_acl/CMakeLists.txt b/lib_acl/CMakeLists.txt
index fb8e3d07c..d81860c86 100644
--- a/lib_acl/CMakeLists.txt
+++ b/lib_acl/CMakeLists.txt
@@ -160,7 +160,7 @@ SET_TARGET_PROPERTIES(acl_static PROPERTIES OUTPUT_NAME "acl")
 link_directories(${lib_output_path})
 
 if (${UNIX_OS})
-	set(CMAKE_SHARED_LINKER_FLAGS "-shared -flto")
+	set(CMAKE_SHARED_LINKER_FLAGS "-shared -O3 -flto")
 	target_compile_options(acl_static PRIVATE
 		-fvisibility=hidden)
 endif()
diff --git a/lib_acl_cpp/CMakeLists.txt b/lib_acl_cpp/CMakeLists.txt
index 6e53fb2d5..d6de5590a 100644
--- a/lib_acl_cpp/CMakeLists.txt
+++ b/lib_acl_cpp/CMakeLists.txt
@@ -201,7 +201,7 @@ SET_TARGET_PROPERTIES(acl_cpp_static PROPERTIES OUTPUT_NAME "acl_cpp")
 link_directories(${lib_output_path})
 
 if (${UNIX_OS})
-	set(CMAKE_SHARED_LINKER_FLAGS "-shared -lz -flto")
+	set(CMAKE_SHARED_LINKER_FLAGS "-shared -lz -O3 -flto")
 	target_compile_options(acl_cpp_static PRIVATE
 		-fvisibility=hidden
 		-fvisibility-inlines-hidden)
diff --git a/lib_protocol/CMakeLists.txt b/lib_protocol/CMakeLists.txt
index 5cbb1efd0..1e14453b0 100644
--- a/lib_protocol/CMakeLists.txt
+++ b/lib_protocol/CMakeLists.txt
@@ -116,11 +116,11 @@ SET_TARGET_PROPERTIES(protocol_static PROPERTIES OUTPUT_NAME "protocol")
 link_directories(${lib_output_path})
 
 if (CMAKE_SYSTEM_NAME MATCHES "Android")
-	set(CMAKE_SHARED_LINKER_FLAGS "-shared -flto")
+	set(CMAKE_SHARED_LINKER_FLAGS "-shared -O3 -flto")
 	target_compile_options(protocol_static PRIVATE
 		-fvisibility=hidden)
 elseif (${UNIX_OS})
-	set(CMAKE_SHARED_LINKER_FLAGS "-shared -flto")
+	set(CMAKE_SHARED_LINKER_FLAGS "-shared -O3 -flto")
 	set(CMAKE_SHARED_LINKER_FLAGS "${lib_output_path}/libacl.a")
 	target_compile_options(protocol_static PRIVATE
 		-fvisibility=hidden)
diff --git a/xmake.lua b/xmake.lua
index 82ae8c423..f1e00b788 100644
--- a/xmake.lua
+++ b/xmake.lua
@@ -86,6 +86,8 @@ if not is_plat("windows") then
 
     if is_kind("static") then
     	add_cxflags("-fvisibility-inlines-hidden")
+            add_cflags("-flto")
+            add_cxxflags("-flto")
         if not is_plat("android") then
             add_cflags("-flto")
             add_cxxflags("-flto")
@@ -93,6 +95,18 @@ if not is_plat("windows") then
     end
     add_defines("_REENTRANT", "_USE_FAST_MACRO", "_POSIX_PTHREAD_SEMANTICS", "_GNU_SOURCE=1")
     --add_defines("ACL_CLIENT_ONLY")
+    add_defines("ACL_PREPARE_COMPILE")
+    add_defines("ANDROID")
+    add_defines("NDEBUG")
+    add_defines("acl_cpp_EXPORTS")
+    add_cflags("fno-addrsig")
+    add_cxxflags("fno-addrsig")
+    add_cflags("-MD", "-MT", "-MF")
+    add_cxxflags("-MD", "-MT", "-MF")
+    add_cflags("-no-canonical-prefixes")
+    add_cxxflags("-no-canonical-prefixes")
+    add_cflags("-fno-addrsig")
+    add_cxxflags("-fno-addrsig")
 end
 
 -- include project sources