fix(build): close code coverage link as default (#234)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index c70b7e7..3a56471 100755
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -191,12 +191,12 @@
         list(APPEND deplibs rt)
     endif ()
     list(APPEND deplibs z)
-    # Code Coverage Configuration
-    add_library(coverage_config INTERFACE)
 
     option(CODE_COVERAGE "Enable coverage reporting" OFF)
     if (CODE_COVERAGE AND CMAKE_CXX_COMPILER_ID MATCHES "GNU|Clang")
         # Add required flags (GCC & LLVM/Clang)
+        # Code Coverage Configuration
+        add_library(coverage_config INTERFACE)
         target_compile_options(coverage_config INTERFACE
                 -O0        # no optimization
                 -g         # generate debug info