diff --git a/CMakeLists.txt b/CMakeLists.txt
index 2e3d5f0..273cd5f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -2,14 +2,15 @@ cmake_minimum_required(VERSION 3.6)
 
 set(PROJECT_N hello)
 
-SET(CMAKE_C_COMPILER $ENV{NDK}/toolchains/llvm/prebuilt/linux-x86_64/bin/aarch64-linux-android22-clang)
-SET(CMAKE_CXX_COMPILER $ENV{NDK}/toolchains/llvm/prebuilt/linux-x86_64/bin/aarch64-linux-android22-clang++)
 
 project(${PROJECT_N} VERSION 1.0)
 
 set(CMAKE_CXX_STANDARD 11)
 set(CMAKE_CXX_STANDARD_REQUIRED True)
 
+
+
+
 file(GLOB_RECURSE SRCS ${PROJECT_SOURCE_DIR}/src/*.cpp)
 
 # a macro that gets all of the header containing directories. 
diff --git a/build.sh b/build.sh
index 9404faf..b4271e5 100755
--- a/build.sh
+++ b/build.sh
@@ -1,3 +1,9 @@
 export NDK=/home/user/Android/Sdk/ndk/21.0.6113669/
-cmake CMakeLists.txt
+export ABI=arm64-v8a
+export MINSDKVERSION=21
+cmake \
+    -DCMAKE_TOOLCHAIN_FILE=$NDK/build/cmake/android.toolchain.cmake \
+    -DANDROID_ABI=$ABI \
+    -DANDROID_PLATFORM=android-$MINSDKVERSION \
+    CMakeLists.txt
 make