diff --git a/CMakeLists.txt b/CMakeLists.txt
index c027357..2c1df34 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,13 +1,11 @@
-cmake_minimum_required(VERSION 3.7)
+cmake_minimum_required(VERSION 3.18)
 
 project(CudaBundleAdjustment)
 
-set(CMAKE_CXX_STANDARD 17)
-set(CMAKE_CXX_EXTENSIONS OFF)
-
-option(ENABLE_SAMPLES "Build samples" ON)
-option(WITH_G2O       "Build sample with g2o (g2o needs to be installed)" OFF)
-option(USE_FLOAT32    "Use 32bit float in internal floating-point operations (default is 64bit float)" OFF)
+option(ENABLE_SAMPLES   "Build samples" ON)
+option(WITH_G2O         "Build sample with g2o (g2o needs to be installed)" OFF)
+option(USE_FLOAT32      "Use 32bit float in internal floating-point operations (default is 64bit float)" OFF)
+option(BUILD_SHARED_LIB "Build shared library" OFF)
 set(CUDA_ARCHS "61;72;75;86" CACHE STRING "List of architectures to generate device code for")
 
 add_subdirectory(src)
diff --git a/samples/CMakeLists.txt b/samples/CMakeLists.txt
index cc5e060..8d13b9d 100644
--- a/samples/CMakeLists.txt
+++ b/samples/CMakeLists.txt
@@ -19,7 +19,7 @@ $<$<COMPILE_LANG_AND_ID:CXX,GNU,Clang>:-Wall -O3>
 $<$<COMPILE_LANG_AND_ID:CXX,MSVC>:/wd4819>
 )
 
-if (WITH_G2O)
+if(WITH_G2O)
 	find_package(g2o REQUIRED)
 	set(G2O_LIBS ${G2O_CORE_LIBRARY} ${G2O_STUFF_LIBRARY} ${G2O_SOLVER_EIGEN} ${G2O_TYPES_SBA} ${G2O_TYPES_SLAM3D})
 	
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 24c0eba..2c8f4c6 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -11,9 +11,15 @@ project(${PROJECT_NAME} LANGUAGES CXX CUDA)
 find_package(Eigen3 REQUIRED)
 find_package(CUDAToolkit REQUIRED)
 
+# library type
+set(LIBRARY_TYPE STATIC)
+if(BUILD_SHARED_LIB)
+	set(LIBRARY_TYPE SHARED)
+endif()
+
 # target configuration
 file(GLOB SRCS ./*.cpp ./*.cu ./*.h* ${INTERNAL_INCLUDE_DIR}/*.h*)
-add_library(${PROJECT_NAME})
+add_library(${PROJECT_NAME} ${LIBRARY_TYPE})
 target_sources(${PROJECT_NAME} PRIVATE ${SRCS})
 target_include_directories(${PROJECT_NAME} PRIVATE ${INTERNAL_INCLUDE_DIR} ${EIGEN3_INCLUDE_DIR} ${CUDAToolkit_INCLUDE_DIRS})
 target_compile_features(${PROJECT_NAME} PRIVATE cxx_std_17)