Only link to the common lib when building as shared

CMakeLists.txt

@@ -1249,6 +1249,7 @@ TARGET_COMPILE_OPTIONS(common PRIVATE ${C_FLAGS})
 
 UNSET(HAS_ROUTER)
 SET(IMPL_TARGET OpenAL)
+SET(COMMON_LIB )
 SET(SUBSYS_FLAG )
 
 # Build main library
@@ -1262,6 +1263,7 @@ ELSE()
     # Make sure to compile the common code with PIC, since it'll be linked into
     # shared libs that needs it.
     SET_PROPERTY(TARGET common PROPERTY POSITION_INDEPENDENT_CODE TRUE)
+    SET(COMMON_LIB common)
 
     IF(WIN32)
         IF(MSVC)
@@ -1276,7 +1278,7 @@ ELSE()
         TARGET_COMPILE_DEFINITIONS(OpenAL
             PRIVATE AL_BUILD_LIBRARY AL_ALEXT_PROTOTYPES ${CPP_DEFS})
         TARGET_COMPILE_OPTIONS(OpenAL PRIVATE ${C_FLAGS})
-        TARGET_LINK_LIBRARIES(OpenAL PRIVATE ${LINKER_FLAGS} common)
+        TARGET_LINK_LIBRARIES(OpenAL PRIVATE ${LINKER_FLAGS} ${COMMON_LIB})
         SET_TARGET_PROPERTIES(OpenAL PROPERTIES PREFIX "")
         SET_TARGET_PROPERTIES(OpenAL PROPERTIES OUTPUT_NAME ${LIBNAME})
         IF(TARGET build_version)
@@ -1288,7 +1290,7 @@ ELSE()
         SET(IMPL_TARGET soft_oal)
     ENDIF()
 
-    ADD_LIBRARY(${IMPL_TARGET} SHARED ${COMMON_OBJS} ${OPENAL_OBJS} ${ALC_OBJS})
+    ADD_LIBRARY(${IMPL_TARGET} SHARED ${OPENAL_OBJS} ${ALC_OBJS})
     IF(WIN32)
         SET_TARGET_PROPERTIES(${IMPL_TARGET} PROPERTIES PREFIX "")
     ENDIF()
@@ -1302,7 +1304,8 @@ TARGET_COMPILE_DEFINITIONS(${IMPL_TARGET}
 TARGET_INCLUDE_DIRECTORIES(${IMPL_TARGET}
     PRIVATE "${OpenAL_SOURCE_DIR}/OpenAL32/Include" "${OpenAL_SOURCE_DIR}/Alc" ${INC_PATHS})
 TARGET_COMPILE_OPTIONS(${IMPL_TARGET} PRIVATE ${C_FLAGS})
-TARGET_LINK_LIBRARIES(${IMPL_TARGET} PRIVATE ${LINKER_FLAGS} common ${EXTRA_LIBS} ${MATH_LIB})
+TARGET_LINK_LIBRARIES(${IMPL_TARGET}
+    PRIVATE ${LINKER_FLAGS} ${COMMON_LIB} ${EXTRA_LIBS} ${MATH_LIB})
 IF(TARGET build_version)
     ADD_DEPENDENCIES(${IMPL_TARGET} build_version)
 ENDIF()