Use BUILD_SHARED_LIBS cmake standard.

CMakeLists.txt

@@ -10,8 +10,8 @@ include(GNUInstallDirs)
 ################################
 # set lib version here
 
-set(GENERIC_LIB_VERSION "2.2.0")
-set(GENERIC_LIB_SOVERSION "2")
+set(GENERIC_LIB_VERSION "2.2.0")
+set(GENERIC_LIB_SOVERSION "2")
 
 
 ################################
@@ -46,12 +46,8 @@ endif(MSVC)
 
 ################################
 # Add targets
-set(BUILD_STATIC_LIBS ON CACHE BOOL "Set to ON to build static libraries")
-if(BUILD_STATIC_LIBS)
-	add_library(tinyxml2static STATIC tinyxml2.cpp tinyxml2.h)
-	set_target_properties(tinyxml2static PROPERTIES OUTPUT_NAME tinyxml2)
-endif(BUILD_STATIC_LIBS)
-add_library(tinyxml2 SHARED tinyxml2.cpp tinyxml2.h)
+option(BUILD_SHARED_LIBS "build shared or static libraries" ON)
+add_library(tinyxml2 tinyxml2.cpp tinyxml2.h)
 set_target_properties(tinyxml2 PROPERTIES
         COMPILE_DEFINITIONS "TINYXML2_EXPORT"
 	VERSION "${GENERIC_LIB_VERSION}"
@@ -63,16 +59,11 @@ add_dependencies(test ${TARGET_DATA_COPY})
 target_link_libraries(test tinyxml2)
 
 
-if(BUILD_STATIC_LIBS)
-	install(TARGETS tinyxml2 tinyxml2static
-		RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
-		LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
-		ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR})
-else(BUILD_STATIC_LIBS)
-	install(TARGETS tinyxml2
-		RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
-		LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR})
-endif(BUILD_STATIC_LIBS)
+install(TARGETS tinyxml2
+        RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
+        LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
+        ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR})
+
 install(FILES tinyxml2.h DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})
 
 foreach(p LIB INCLUDE)