[CMake] Fix static linking w/o V8.

When configuring a static library build with `-DWITH_V8=OFF`, there was
a CMake error that there is no rule to build `libv8_monolith`, that is
required by `libmutable_bundled`.  This was due to a mistake in the
configuration of the libraries included in `libmutable_bundled`.

This commit introduces a check for `WITH_V8` before adding the V8 and
Binaryen libraries to `libmutable_bundled`.

Author: ImmanuelHaffner

src/CMakeLists.txt

@@ -66,9 +66,14 @@ else()
     list(
         APPEND static_libs
         "${LIBRARY_OUTPUT_PATH}/${CMAKE_STATIC_LIBRARY_PREFIX}${PROJECT_NAME}${CMAKE_STATIC_LIBRARY_SUFFIX}"
-        "${PROJECT_BINARY_DIR}/third-party/src/V8-build/out/obj/${CMAKE_STATIC_LIBRARY_PREFIX}v8_monolith${CMAKE_STATIC_LIBRARY_SUFFIX}"
-        "${PROJECT_BINARY_DIR}/third-party/src/Binaryen-build/lib/${CMAKE_STATIC_LIBRARY_PREFIX}binaryen${CMAKE_STATIC_LIBRARY_SUFFIX}"
     )
+    if(${WITH_V8})
+        list(
+            APPEND static_libs
+            "${PROJECT_BINARY_DIR}/third-party/src/Binaryen-build/lib/${CMAKE_STATIC_LIBRARY_PREFIX}binaryen${CMAKE_STATIC_LIBRARY_SUFFIX}"
+            "${PROJECT_BINARY_DIR}/third-party/src/V8-build/out/obj/${CMAKE_STATIC_LIBRARY_PREFIX}v8_monolith${CMAKE_STATIC_LIBRARY_SUFFIX}"
+        )
+    endif()
     foreach(lib_target ${Boost_LIBRARIES})
         get_target_property(lib_location ${lib_target} LOCATION)
         list(APPEND static_libs ${lib_location})