diff --git a/CMakeLists.txt b/CMakeLists.txt
index 8d6c76dda..23663f85c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -78,9 +78,11 @@ endif()
 
 add_subdirectory(lib_acl acl)
 add_subdirectory(lib_protocol protocol)
-add_dependencies(protocol acl)
 add_subdirectory(lib_acl_cpp acl_cpp)
-add_dependencies(acl_cpp protocol acl)
+if (ACL_BUILD_SHARED MATCHES "YES")
+	add_dependencies(protocol acl)
+	add_dependencies(acl_cpp protocol acl)
+endif()
 
 #if (CMAKE_SYSTEM_NAME MATCHES "Linux" OR CMAKE_SYSTEM_NAME MATCHES "Android")
 if (CMAKE_SYSTEM_NAME MATCHES "Linux")
diff --git a/build4android.sh b/build4android.sh
index 2a8b43740..3de8df930 100755
--- a/build4android.sh
+++ b/build4android.sh
@@ -15,11 +15,12 @@
 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 \
+	-DANDROID_PLATFORM=android-28 \
 	-DCMAKE_SYSTEM_NAME=Android \
 	-DACL_CLIENT_ONLY=YES \
 	-DDISABLE_DB=YES \
 	-DHAS_POLARSSL_DLL=NO \
 	-DCMAKE_BUILD_TYPE=RELEASE \
 	-DCMAKE_VERBOSE_MAKEFILE=ON \
+	-DACL_BUILD_SHARED=NO \
 	..
diff --git a/lib_acl/CMakeLists.txt b/lib_acl/CMakeLists.txt
index 942a851a5..a2120a6c7 100644
--- a/lib_acl/CMakeLists.txt
+++ b/lib_acl/CMakeLists.txt
@@ -171,6 +171,8 @@ if (${UNIX_OS})
 	target_compile_options(acl_static PRIVATE -fvisibility=hidden)
 endif()
 
-add_library(acl SHARED ${lib_src})
+if (ACL_BUILD_SHARED MATCHES "YES")
+	add_library(acl SHARED ${lib_src})
+endif()
 
 ##############################################################################
diff --git a/lib_acl_cpp/CMakeLists.txt b/lib_acl_cpp/CMakeLists.txt
index cc71871c5..8f4e7f93f 100644
--- a/lib_acl_cpp/CMakeLists.txt
+++ b/lib_acl_cpp/CMakeLists.txt
@@ -227,8 +227,10 @@ elseif (${UNIX_OS})
 endif()
 
 if(NOT CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
-	add_library(acl_cpp SHARED ${lib_src})
-	target_link_libraries(acl_cpp protocol acl)
+	if (ACL_BUILD_SHARED MATCHES "YES")
+		add_library(acl_cpp SHARED ${lib_src})
+		target_link_libraries(acl_cpp protocol acl)
+	endif()
 endif()
 
 ##############################################################################
diff --git a/lib_protocol/CMakeLists.txt b/lib_protocol/CMakeLists.txt
index 2f208ec93..47aea155e 100644
--- a/lib_protocol/CMakeLists.txt
+++ b/lib_protocol/CMakeLists.txt
@@ -132,8 +132,10 @@ elseif (${UNIX_OS})
 endif()
 
 if (NOT CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
-	add_library(protocol SHARED ${lib_src})
-	target_link_libraries(protocol acl)
+	if (ACL_BUILD_SHARED MATCHES "YES")
+		add_library(protocol SHARED ${lib_src})
+		target_link_libraries(protocol acl)
+	endif()
 endif()
 
 ##############################################################################
diff --git a/xmake.lua b/xmake.lua
index fd36b7729..ddcf8f459 100644
--- a/xmake.lua
+++ b/xmake.lua
@@ -117,8 +117,8 @@ if not is_plat("windows") then
     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("-MD", "-MT", "-MF")
+    --add_cxxflags("-MD", "-MT", "-MF")
     add_cflags("-no-canonical-prefixes")
     add_cxxflags("-no-canonical-prefixes")
     add_cflags("-fno-addrsig")