diff --git a/CMakeLists.txt b/CMakeLists.txt
index ec6fadd..a772879 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -3,6 +3,13 @@ cmake_minimum_required(VERSION 3.5)
 project(tsl-sparse-map VERSION 0.6.2 LANGUAGES CXX)
 include(GNUInstallDirs)
 
+set(IS_MAIN_PROJECT FALSE)
+if(CMAKE_SOURCE_DIR STREQUAL PROJECT_SOURCE_DIR)
+  set(IS_MAIN_PROJECT TRUE)
+endif()
+
+option(TSL_SPARSE_MAP_ENABLE_INSTALL "Enable install target" ${IS_MAIN_PROJECT}) # PROJECT_IS_TOP_LEVEL)
+
 add_library(sparse_map INTERFACE)
 # Use tsl::sparse_map as target, more consistent with other libraries conventions (Boost, Qt, ...)
 add_library(tsl::sparse_map ALIAS sparse_map)
@@ -23,52 +30,53 @@ if(MSVC)
                    "$<INSTALL_INTERFACE:${CMAKE_INSTALL_DATAROOTDIR}/tsl-sparse-map.natvis>")
 endif()
 
+# Installation
+if(TSL_SPARSE_MAP_ENABLE_INSTALL)
+        include(CMakePackageConfigHelpers)
 
+        ## Install include directory and potential natvis file
+        install(DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/include/tsl"
+                DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}")
 
+        if(MSVC)
+        install(FILES "${CMAKE_CURRENT_SOURCE_DIR}/tsl-sparse-map.natvis"
+                DESTINATION "${CMAKE_INSTALL_DATAROOTDIR}")
+        endif()
 
-include(CMakePackageConfigHelpers)
-
-## Install include directory and potential natvis file
-install(DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/include/tsl"
-        DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}")
 
-if(MSVC)
-install(FILES "${CMAKE_CURRENT_SOURCE_DIR}/tsl-sparse-map.natvis"
-        DESTINATION "${CMAKE_INSTALL_DATAROOTDIR}")
-endif()
 
+        ## Create and install tsl-sparse-mapConfig.cmake
+        configure_package_config_file("${CMAKE_CURRENT_SOURCE_DIR}/cmake/tsl-sparse-mapConfig.cmake.in"
+                                        "${CMAKE_CURRENT_BINARY_DIR}/tsl-sparse-mapConfig.cmake"
+                                        INSTALL_DESTINATION "${CMAKE_INSTALL_DATAROOTDIR}/cmake/tsl-sparse-map")
 
+        install(FILES "${CMAKE_CURRENT_BINARY_DIR}/tsl-sparse-mapConfig.cmake"
+                DESTINATION "${CMAKE_INSTALL_DATAROOTDIR}/cmake/tsl-sparse-map")
 
-## Create and install tsl-sparse-mapConfig.cmake
-configure_package_config_file("${CMAKE_CURRENT_SOURCE_DIR}/cmake/tsl-sparse-mapConfig.cmake.in"
-                                "${CMAKE_CURRENT_BINARY_DIR}/tsl-sparse-mapConfig.cmake"
-                                INSTALL_DESTINATION "${CMAKE_INSTALL_DATAROOTDIR}/cmake/tsl-sparse-map")
 
-install(FILES "${CMAKE_CURRENT_BINARY_DIR}/tsl-sparse-mapConfig.cmake"
-        DESTINATION "${CMAKE_INSTALL_DATAROOTDIR}/cmake/tsl-sparse-map")
 
+        ## Create and install tsl-sparse-mapTargets.cmake
+        install(TARGETS sparse_map
+                EXPORT tsl-sparse-mapTargets)
 
+        install(EXPORT tsl-sparse-mapTargets
+                NAMESPACE tsl::
+                DESTINATION "${CMAKE_INSTALL_DATAROOTDIR}/cmake/tsl-sparse-map")
 
-## Create and install tsl-sparse-mapTargets.cmake
-install(TARGETS sparse_map
-        EXPORT tsl-sparse-mapTargets)
 
-install(EXPORT tsl-sparse-mapTargets
-        NAMESPACE tsl::
-        DESTINATION "${CMAKE_INSTALL_DATAROOTDIR}/cmake/tsl-sparse-map")
 
+        ## Create and install tsl-sparse-mapConfigVersion.cmake
+        # tsl-sparse-map is header-only and does not depend on the architecture.
+        # Remove CMAKE_SIZEOF_VOID_P from tsl-sparse-mapConfigVersion.cmake so that a
+        # tsl-sparse-mapConfig.cmake generated for a 64 bit target can be used for 32 bit
+        # targets and vice versa.
+        set(CMAKE_SIZEOF_VOID_P_BACKUP ${CMAKE_SIZEOF_VOID_P})
+        unset(CMAKE_SIZEOF_VOID_P)
+        write_basic_package_version_file("${CMAKE_CURRENT_BINARY_DIR}/tsl-sparse-mapConfigVersion.cmake"
+                                        COMPATIBILITY SameMajorVersion)
+        set(CMAKE_SIZEOF_VOID_P ${CMAKE_SIZEOF_VOID_P_BACKUP})
 
+        install(FILES "${CMAKE_CURRENT_BINARY_DIR}/tsl-sparse-mapConfigVersion.cmake"
+                DESTINATION "${CMAKE_INSTALL_DATAROOTDIR}/cmake/tsl-sparse-map")
 
-## Create and install tsl-sparse-mapConfigVersion.cmake
-# tsl-sparse-map is header-only and does not depend on the architecture.
-# Remove CMAKE_SIZEOF_VOID_P from tsl-sparse-mapConfigVersion.cmake so that a
-# tsl-sparse-mapConfig.cmake generated for a 64 bit target can be used for 32 bit
-# targets and vice versa.
-set(CMAKE_SIZEOF_VOID_P_BACKUP ${CMAKE_SIZEOF_VOID_P})
-unset(CMAKE_SIZEOF_VOID_P)
-write_basic_package_version_file("${CMAKE_CURRENT_BINARY_DIR}/tsl-sparse-mapConfigVersion.cmake"
-                                COMPATIBILITY SameMajorVersion)
-set(CMAKE_SIZEOF_VOID_P ${CMAKE_SIZEOF_VOID_P_BACKUP})
-
-install(FILES "${CMAKE_CURRENT_BINARY_DIR}/tsl-sparse-mapConfigVersion.cmake"
-        DESTINATION "${CMAKE_INSTALL_DATAROOTDIR}/cmake/tsl-sparse-map")
+endif()