Do not always build static and dynamic

Currently, the static and dynamic version of the libraries are always
built as add_library is called twice. Instead, this patch will use the
standard CMake variable BUILD_SHARED_LIBS to know if the static or the
dynamic version must be built.
Signed-off-by: NFabrice Fontaine <fabrice.fontaine@orange.com>

CMakeLists.txt

@@ -7,18 +7,11 @@ project(${PROJ_CJSON} C)
 file(GLOB HEADERS cJSON.h)
 set(SOURCES cJSON.c)
 
-add_library(${PROJ_CJSON} STATIC ${HEADERS} ${SOURCES})
+add_library(${PROJ_CJSON} ${HEADERS} ${SOURCES})
 if (NOT WIN32)
 	target_link_libraries(${PROJ_CJSON} m)
 endif()
 
-add_library(${PROJ_CJSON}.shared SHARED ${HEADERS} ${SOURCES})
-set_target_properties(${PROJ_CJSON}.shared PROPERTIES OUTPUT_NAME cJSON)
-if (NOT WIN32)
-	target_link_libraries(${PROJ_CJSON}.shared m)
-endif()
-
-
 set(PROJ_CJSON_UTILS cJSON_utils)
 
 project(${PROJ_CJSON_UTILS} C)
@@ -26,27 +19,21 @@ project(${PROJ_CJSON_UTILS} C)
 file(GLOB HEADERS_UTILS cJSON_Utils.h)
 set(SOURCES_UTILS cJSON_Utils.c)
 
-add_library(${PROJ_CJSON_UTILS} STATIC ${HEADERS_UTILS} ${SOURCES_UTILS})
+add_library(${PROJ_CJSON_UTILS} ${HEADERS_UTILS} ${SOURCES_UTILS})
 target_link_libraries(${PROJ_CJSON_UTILS} ${PROJ_CJSON})
 
-add_library(${PROJ_CJSON_UTILS}.shared SHARED ${HEADERS_UTILS} ${SOURCES_UTILS})
-set_target_properties(${PROJ_CJSON_UTILS}.shared PROPERTIES OUTPUT_NAME cJSON_utils)
-target_link_libraries(${PROJ_CJSON_UTILS}.shared ${PROJ_CJSON}.shared)
-
 install (TARGETS ${PROJ_CJSON} DESTINATION lib${LIB_SUFFIX})
-install (TARGETS ${PROJ_CJSON}.shared DESTINATION lib${LIB_SUFFIX})
 install (FILES cJSON.h DESTINATION include/cJSON)
 install (TARGETS ${PROJ_CJSON_UTILS} DESTINATION lib${LIB_SUFFIX})
-install (TARGETS ${PROJ_CJSON_UTILS}.shared DESTINATION lib${LIB_SUFFIX})
 install (FILES cJSON_Utils.h DESTINATION include/cJSON)
 
 option(ENABLE_CJSON_TEST "Enable building cJSON test" OFF)
 if(ENABLE_CJSON_TEST)
 	set(TEST_CJSON cJSON_test)
 	add_executable(${TEST_CJSON} test.c)
-	target_link_libraries(${TEST_CJSON} ${PROJ_CJSON}.shared)
+	target_link_libraries(${TEST_CJSON} ${PROJ_CJSON})
 
 	set(TEST_CJSON_UTILS cJSON_test_utils)
 	add_executable(${TEST_CJSON_UTILS} test_utils.c)
-	target_link_libraries(${TEST_CJSON_UTILS} ${PROJ_CJSON_UTILS}.shared)
+	target_link_libraries(${TEST_CJSON_UTILS} ${PROJ_CJSON_UTILS})
 endif()