diff --git a/plugins/overlook/overlook.cmake b/plugins/overlook/overlook.cmake
index 7d3688b..fd15ada 100644
--- a/plugins/overlook/overlook.cmake
+++ b/plugins/overlook/overlook.cmake
@@ -47,7 +47,7 @@ endif()
 
 # rule0: don't ignore all that warnings
 # If `-w` specified for GCC/Clang, report an error
-if((CMAKE_C_COMPILER_ID MATCHES "GNU") OR (CMAKE_C_COMPILER_ID MATCHES "Clang"))
+if((CMAKE_C_COMPILER_ID STREQUAL "GNU") OR (CMAKE_C_COMPILER_ID MATCHES "Clang"))
   get_directory_property(overlook_detected_global_compile_options COMPILE_OPTIONS)
   message("Detected Global Compile Options: ${overlook_detected_global_compile_options}")
   string(REGEX MATCH "-w" ignore_all_warnings "${overlook_detected_global_compile_options}" )
@@ -65,7 +65,7 @@ endif()
 if(CMAKE_C_COMPILER_ID STREQUAL "MSVC")
   list(APPEND OVERLOOK_C_COMPILE_OPTIONS /we4013)
   list(APPEND OVERLOOK_CXX_COMPILE_OPTIONS /we4013)
-elseif(CMAKE_C_COMPILER_ID MATCHES "GNU")
+elseif(CMAKE_C_COMPILER_ID STREQUAL "GNU")
   list(APPEND OVERLOOK_C_COMPILE_OPTIONS -Werror=implicit-function-declaration)
   if(CMAKE_CXX_COMPILER_VERSION LESS 9.1)
     list(APPEND OVERLOOK_CXX_COMPILE_OPTIONS -Werror=implicit-function-declaration)
@@ -82,7 +82,7 @@ endif()
 if(CMAKE_C_COMPILER_ID STREQUAL "MSVC")
   list(APPEND OVERLOOK_C_COMPILE_OPTIONS /we4431)
   list(APPEND OVERLOOK_CXX_COMPILE_OPTIONS /we4431)
-elseif(CMAKE_C_COMPILER_ID MATCHES "GNU")
+elseif(CMAKE_C_COMPILER_ID STREQUAL "GNU")
   list(APPEND OVERLOOK_C_COMPILE_OPTIONS -Werror=implicit-int)
   if(CMAKE_CXX_COMPILER_VERSION LESS 9.1)
     list(APPEND OVERLOOK_CXX_COMPILE_OPTIONS -Werror=implicit-int)
@@ -116,7 +116,7 @@ endif()
 if(CMAKE_C_COMPILER_ID STREQUAL "MSVC")
   list(APPEND OVERLOOK_C_COMPILE_OPTIONS /we4172)
   list(APPEND OVERLOOK_CXX_COMPILE_OPTIONS /we4172)
-elseif(CMAKE_C_COMPILER_ID MATCHES "GNU")
+elseif(CMAKE_C_COMPILER_ID STREQUAL "GNU")
   list(APPEND OVERLOOK_C_COMPILE_OPTIONS -Werror=return-local-addr)
   list(APPEND OVERLOOK_CXX_COMPILE_OPTIONS -Werror=return-local-addr)
 elseif(CMAKE_C_COMPILER_ID MATCHES "Clang")
@@ -141,7 +141,7 @@ endif()
 # rule14: 避免 void* 类型的指针参参与算术运算
 # MSVC C/C++ 默认会报错, Linux gcc 不报 warning 和 error, Linux g++ 只报 warning
 # Linux 下 Clang 开 -Wpedentric 才报 warning, Clang++ 报 error
-if(CMAKE_C_COMPILER_ID MATCHES "GNU")
+if(CMAKE_C_COMPILER_ID STREQUAL "GNU")
   list(APPEND OVERLOOK_C_COMPILE_OPTIONS -Werror=pointer-arith)
   list(APPEND OVERLOOK_CXX_COMPILE_OPTIONS -Werror=pointer-arith)
 elseif(CMAKE_C_COMPILER_ID MATCHES "Clang")
@@ -153,7 +153,7 @@ endif()
 if(CMAKE_C_COMPILER_ID STREQUAL "MSVC")
   list(APPEND OVERLOOK_C_COMPILE_OPTIONS /we4133)
   list(APPEND OVERLOOK_CXX_COMPILE_OPTIONS /we4133)
-elseif(CMAKE_CXX_COMPILER_ID MATCHES "GNU")
+elseif(CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
   if(CMAKE_CXX_COMPILER_VERSION GREATER 4.8) # gcc/g++ 4.8.3 not ok
     list(APPEND OVERLOOK_C_COMPILE_OPTIONS -Werror=incompatible-pointer-types)
     if(CMAKE_CXX_COMPILER_VERSION LESS 9.1)
@@ -169,7 +169,7 @@ endif()
 if(CMAKE_C_COMPILER_ID STREQUAL "MSVC")
   list(APPEND OVERLOOK_C_COMPILE_OPTIONS /we4047)
   list(APPEND OVERLOOK_CXX_COMPILE_OPTIONS /we4047)
-elseif(CMAKE_CXX_COMPILER_ID MATCHES "GNU")
+elseif(CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
   if(CMAKE_CXX_COMPILER_VERSION GREATER 4.8)
     list(APPEND OVERLOOK_C_COMPILE_OPTIONS -Werror=int-conversion)
     if(CMAKE_CXX_COMPILER_VERSION LESS 9.1)
@@ -200,7 +200,7 @@ endif()
 if(CMAKE_C_COMPILER_ID STREQUAL "MSVC")
   list(APPEND OVERLOOK_C_COMPILE_OPTIONS /we4312)
   list(APPEND OVERLOOK_CXX_COMPILE_OPTIONS /we4312)
-elseif(CMAKE_C_COMPILER_ID MATCHES "GNU")
+elseif(CMAKE_C_COMPILER_ID STREQUAL "GNU")
   list(APPEND OVERLOOK_C_COMPILE_OPTIONS -Werror=int-to-pointer-cast)
   list(APPEND OVERLOOK_CXX_COMPILE_OPTIONS -Werror=int-to-pointer-cast)
 elseif(CMAKE_C_COMPILER_ID MATCHES "Clang")
@@ -248,14 +248,14 @@ endif()
 # rule16: 释放非堆内存
 # TODO: 检查 MSVC
 # Linux Clang8.0 无法检测到
-if(CMAKE_CXX_COMPILER_ID MATCHES "GNU")
+if(CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
   list(APPEND OVERLOOK_C_COMPILE_OPTIONS -Werror=free-nonheap-object)
   list(APPEND OVERLOOK_CXX_COMPILE_OPTIONS -Werror=free-nonheap-object)
 endif()
 
 # rule32: 用 memset 等 C 函数设置 非 POD class 对象
 # Linux下, GCC9.3 能发现此问题, 但clang10 不能发现
-if(CMAKE_CXX_COMPILER_ID MATCHES "GNU")
+if(CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
   if(CMAKE_CXX_COMPILER_VERSION GREATER 7.5)
     list(APPEND OVERLOOK_CXX_COMPILE_OPTIONS -Werror=class-memaccess)
   endif()
@@ -263,7 +263,7 @@ endif()
 
 # rule15: 避免符号重复定义（变量对应的强弱符号）。只在 C 中出现。
 # 暂时没找到 MSVC 的对应编译选项
-if(CMAKE_C_COMPILER_ID MATCHES "GNU" OR CMAKE_C_COMPILER_ID MATCHES "Clang")
+if((CMAKE_C_COMPILER_ID STREQUAL "GNU") OR CMAKE_C_COMPILER_ID MATCHES "Clang")
   list(APPEND OVERLOOK_C_COMPILE_OPTIONS -fno-common)
 endif()
 
@@ -304,7 +304,7 @@ endif()
 if(CMAKE_C_COMPILER_ID STREQUAL "MSVC")
   list(APPEND OVERLOOK_C_COMPILE_OPTIONS /we4552 /we4555)
   list(APPEND OVERLOOK_CXX_COMPILE_OPTIONS /we4552 /we4555)
-elseif(CMAKE_C_COMPILER_ID MATCHES "GNU")
+elseif(CMAKE_C_COMPILER_ID STREQUAL "GNU")
   list(APPEND OVERLOOK_C_COMPILE_OPTIONS -Werror=unused-value)
   list(APPEND OVERLOOK_CXX_COMPILE_OPTIONS -Werror=unused-value)
 elseif(CMAKE_C_COMPILER_ID MATCHES "Clang")
@@ -326,7 +326,7 @@ endif()
 if(CMAKE_C_COMPILER_ID STREQUAL "MSVC")
   list(APPEND OVERLOOK_C_COMPILE_OPTIONS /we4006)
   list(APPEND OVERLOOK_CXX_COMPILE_OPTIONS /we4006)
-elseif(CMAKE_C_COMPILER_ID MATCHES "GNU")
+elseif(CMAKE_C_COMPILER_ID STREQUAL "GNU")
   list(APPEND OVERLOOK_C_COMPILE_OPTIONS -Werror=comment)
   list(APPEND OVERLOOK_CXX_COMPILE_OPTIONS -Werror=comment)
 elseif(CMAKE_C_COMPILER_ID MATCHES "Clang")
@@ -351,7 +351,7 @@ endif()
 
 # rule29: C++中，禁止把字符串常量赋值给 char* 变量
 # VS2019 开启 /Wall 后也查不到
-if(CMAKE_CXX_COMPILER_ID MATCHES "GNU")
+if(CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
   list(APPEND OVERLOOK_CXX_COMPILE_OPTIONS -Werror=write-strings)
 elseif(CMAKE_CXX_COMPILER_ID MATCHES "Clang")
   # Linux Clang 和 AppleClang 不太一样
@@ -364,7 +364,7 @@ endif()
 
 # rule31: multi-char constant
 # MSVC 没有对应的选项
-if(CMAKE_C_COMPILER_ID MATCHES "GNU")
+if(CMAKE_C_COMPILER_ID STREQUAL "GNU")
   list(APPEND OVERLOOK_C_COMPILE_OPTIONS -Werror=multichar)
   list(APPEND OVERLOOK_CXX_COMPILE_OPTIONS -Werror=multichar)
 elseif(CMAKE_C_COMPILER_ID MATCHES "Clang")
@@ -380,7 +380,7 @@ endif()
 if(CMAKE_C_COMPILER_ID STREQUAL "MSVC")
   list(APPEND OVERLOOK_C_COMPILE_OPTIONS /we4018)
   list(APPEND OVERLOOK_CXX_COMPILE_OPTIONS /we4018)
-elseif(CMAKE_C_COMPILER_ID MATCHES "GNU")
+elseif(CMAKE_C_COMPILER_ID STREQUAL "GNU")
   list(APPEND OVERLOOK_C_COMPILE_OPTIONS -Werror=sign-compare)
   list(APPEND OVERLOOK_CXX_COMPILE_OPTIONS -Werror=sign-compare)
 elseif(CMAKE_C_COMPILER_ID MATCHES "Clang")
@@ -403,7 +403,7 @@ if(CMAKE_C_COMPILER_ID STREQUAL "MSVC")
 endif()
 
 ## rule37: float 转换隐式转换为 int，可能改变变量的值
-if(CMAKE_CXX_COMPILER_ID MATCHES "GNU")
+if(CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
   list(APPEND OVERLOOK_CXX_COMPILE_OPTIONS -Werror=float-conversion)
 elseif(CMAKE_CXX_COMPILER_ID MATCHES "Clang")
   list(APPEND OVERLOOK_CXX_COMPILE_OPTIONS  -Werror=float-conversion)
@@ -428,14 +428,14 @@ endif()
 # Warn when a class has virtual functions and an accessible non-virtual destructor itself or in an accessible polymorphic base
 # class, in which case it is possible but unsafe to delete an instance of a derived class through a pointer to the class
 # itself or base class.  This warning is automatically enabled if -Weffc++ is specified.
-if(CMAKE_CXX_COMPILER_ID MATCHES "GNU")
+if(CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
   list(APPEND OVERLOOK_CXX_COMPILE_OPTIONS -Werror=non-virtual-dtor)
 elseif(CMAKE_C_COMPILER_ID MATCHES "Clang")
   list(APPEND OVERLOOK_CXX_COMPILE_OPTIONS -Werror=non-virtual-dtor)
 endif()
 
 ## rule36: switch case 忘记写 break, 会 fallthrough 执行， 可能导致数组越界(具体取决于你的代码). 不写break我们视为错误。
-if((CMAKE_C_COMPILER_ID MATCHES "GNU") OR (CMAKE_CXX_COMPILER_ID MATCHES "GNU"))
+if((CMAKE_C_COMPILER_ID STREQUAL "GNU") OR (CMAKE_CXX_COMPILER_ID STREQUAL "GNU"))
   list(APPEND OVERLOOK_C_COMPILE_OPTIONS -Werror=implicit-fallthrough)
   list(APPEND OVERLOOK_CXX_COMPILE_OPTIONS -Werror=implicit-fallthrough)
 elseif((CMAKE_C_COMPILER_ID MATCHES "Clang") OR (CMAKE_CXX_COMPILER_ID MATCHES "Clang"))
@@ -444,7 +444,7 @@ elseif((CMAKE_C_COMPILER_ID MATCHES "Clang") OR (CMAKE_CXX_COMPILER_ID MATCHES "
 endif()
 
 ## rule37: 遇到第一个报错就停止编译
-if((CMAKE_C_COMPILER_ID MATCHES "GNU") OR (CMAKE_CXX_COMPILER_ID MATCHES "GNU"))
+if((CMAKE_C_COMPILER_ID STREQUAL "GNU") OR (CMAKE_CXX_COMPILER_ID STREQUAL "GNU"))
   list(APPEND OVERLOOK_C_COMPILE_OPTIONS -Wfatal-errors)
   list(APPEND OVERLOOK_CXX_COMPILE_OPTIONS -Wfatal-errors)
 elseif((CMAKE_C_COMPILER_ID MATCHES "Clang") OR (CMAKE_CXX_COMPILER_ID MATCHES "Clang"))
@@ -496,7 +496,7 @@ function(overlook_add_whole_archive_flag lib output_var)
       overlook_warn("MSVC version is ${MSVC_VERSION}, /WHOLEARCHIVE flag cannot be set")
       set(${output_var} ${lib} PARENT_SCOPE)
     endif()
-  elseif("${CMAKE_CXX_COMPILER_ID}" MATCHES "GNU")
+  elseif("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU")
     set(${output_var} -Wl,--whole-archive ${lib} -Wl,--no-whole-archive PARENT_SCOPE)
   elseif("${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang" AND CMAKE_SYSTEM_NAME MATCHES "Linux")
     # set(${output_var} -Wl,--whole-archive ${lib} -Wl,--no-whole-archive PARENT_SCOPE)
diff --git a/plugins/overlook/tests/CMakeLists.txt b/plugins/overlook/tests/CMakeLists.txt
index 1e6e25d..4b69265 100644
--- a/plugins/overlook/tests/CMakeLists.txt
+++ b/plugins/overlook/tests/CMakeLists.txt
@@ -1,6 +1,8 @@
 cmake_minimum_required(VERSION 3.10)
 project(test_overlook)
 
+message("CMAKE_C_COMPILER_ID: ${CMAKE_C_COMPILER_ID}")
+message("CMAKE_CXX_COMPILER_ID: ${CMAKE_CXX_COMPILER_ID}")
 include(../overlook.cmake)
 
 add_executable(test1 test1.c)
@@ -39,4 +41,4 @@ add_executable(test33 test33.cpp)
 add_executable(test34 test34.cpp)
 add_executable(test35 test35.cpp)
 add_executable(test36 test36.cpp)
-add_executable(test37 test37.cpp)
\ No newline at end of file
+add_executable(test37 test37.cpp)