Added flag BUILD_DOCS for documentation in CMakeLists.txt

CMakeLists.txt

@@ -2,6 +2,7 @@ cmake_minimum_required(VERSION 3.2)
 project(libicsneo VERSION 0.2.0)
 
 option(BUILD_TESTS "Build all tests." OFF)
+option(BUILD_DOCS "Build documentation. Don't use in Visual Studio." OFF)
 
 set(CMAKE_CXX_STANDARD 11)
 
@@ -36,7 +37,8 @@ if(DOXYGEN_FOUND)
 	endif()
 endif()
 
-if(DOXYGEN_FOUND)
+if(BUILD_DOCS)
+	if(DOXYGEN_FOUND)
 		message("Will build Doxygen based documentation")
 
 		add_custom_target(libicsneo_doxygen ALL
@@ -67,7 +69,7 @@ if(DOXYGEN_FOUND)
 				"${ICSNEO_DOCS_DIR}/conf.py"
 				@ONLY)
 
-		add_custom_target(libicsneo_sphinx ALL
+			add_custom_target(libicsneo_sphinx
 				${SPHINX_EXECUTABLE}
 					-q -b html
 					-c "${ICSNEO_DOCS_DIR}"
@@ -77,8 +79,10 @@ if(DOXYGEN_FOUND)
 				COMMENT "Building HTML documentation with Sphinx"
 				DEPENDS icsneocpp icsneoc icsneolegacy)
 		endif()
+	endif()
 endif()
 
+
 if(WIN32)
 	file(GLOB PLATFORM_SRC_EXTERNAL ${CMAKE_CURRENT_SOURCE_DIR}/platform/windows/*.cpp)
 	file(GLOB PLATFORM_SRC_INTERNAL ${CMAKE_CURRENT_SOURCE_DIR}/platform/windows/internal/*.cpp)