fix(string): fix some bugs

please refer to the file change history for details

.github/workflows/cmake-multi-platform.yml

@@ -62,12 +62,6 @@ jobs:
         run: |
           echo "build-output-dir=${{ github.workspace }}/build" >> "$GITHUB_OUTPUT"
 
-      - name: Install UPX on Windows
-        if: matrix.os == 'windows-latest'
-        run: |
-          choco install upx -y
-        shell: pwsh
-
       - name: Configure CMake
         # Configure CMake in a 'build' subdirectory. `CMAKE_BUILD_TYPE` is only required if you are using a single-configuration generator such as make.
         # See https://cmake.org/cmake/help/latest/variable/CMAKE_BUILD_TYPE.html?highlight=cmake_build_type

CMakeLists.txt

@@ -23,11 +23,6 @@ if(CMAKE_BUILD_TYPE STREQUAL "Release")
     if(CMAKE_CXX_COMPILER_ID MATCHES "GNU|Clang")
         add_custom_command(TARGET ${target} POST_BUILD
             COMMAND ${CMAKE_STRIP} "${filename}"
-            COMMAND upx -9 "${filename}"
-        )
-    else()
-        add_custom_command(TARGET ${target} POST_BUILD
-            COMMAND upx -9 "${filename}"
         )
     endif()
 endif()