MSVC环境下CMake安装LMMS时无法获取ASan动态库报错求助

问题描述 #

• 环境：MSVC环境，启用Sanitizers构建未合并PR版本的LMMS
• 现象：构建过程正常，但执行安装命令 cmake --install . --prefix=(folder) --config=Debug 时，出现无法解析依赖 clang_rt.asan_dynamic-x86_64.dll 的错误
• 已尝试：咨询该PR作者及LMMS团队，未找到解决办法

错误详情 #

-- Finding prerequisites of lmms.exe

--
warning: cannot resolve item 'clang_rt.asan_dynamic-x86_64.dll'
  possible problems:
    need more directories?
    need to use InstallRequiredSystemLibraries?
    run in install tree instead of build tree?
-- warning: gp_resolved_file_type non-absolute file 'clang_rt.asan_dynamic-x86_64.dll' returning type 'other' -- possibly incorrect
--
warning: cannot resolve item 'clang_rt.asan_dynamic-x86_64.dll'
  possible problems:
    need more directories?
    need to use InstallRequiredSystemLibraries?
    run in install tree instead of build tree?
--
warning: cannot resolve item 'clang_rt.asan_dynamic-x86_64.dll'
  possible problems:
    need more directories?
    need to use InstallRequiredSystemLibraries?
    run in install tree instead of build tree?
CMake Error at D:/BuildAndGit/lmms/cmake/modules/InstallDependencies.cmake:179 (message):
  Can't resolve dependency clang_rt.asan_dynamic-x86_64.dll.
Call Stack (most recent call first):
  D:/BuildAndGit/lmms/cmake/modules/InstallDependencies.cmake:126 (find_prerequisites)
  cmake/install/cmake_install.cmake:63 (INSTALL_DEPENDENCIES)
  cmake_install.cmake:112 (include)

可能的解决思路 #

• 指定ASAN库路径给CMake：找到LLVM/Clang安装目录下的bin文件夹（例如C:\Program Files\LLVM\bin），执行安装命令时追加参数：

  cmake --install . --prefix=(folder) --config=Debug --cmake-args "-DCMAKE_INSTALL_SYSTEM_RUNTIME_LIBS_DIR=C:/Program Files/LLVM/bin"
  

  也可以在初始配置CMake时，通过 -DCMAKE_PREFIX_PATH="C:/Program Files/LLVM" 让CMake识别到LLVM的库路径。

• 手动复制依赖库：直接找到clang_rt.asan_dynamic-x86_64.dll（通常位于LLVM安装目录的bin或lib/clang/<你的clang版本>/lib/windows文件夹），将其复制到LMMS安装目录的bin文件夹中，再重新执行安装命令。

• 修改依赖搜索路径：编辑LMMS源码中的cmake/modules/InstallDependencies.cmake文件，在调用find_prerequisites之前，添加LLVM的bin目录到搜索路径：

  set(GP_SEARCH_DIRS "${GP_SEARCH_DIRS};C:/Program Files/LLVM/bin")
  

  注意替换为你的LLVM实际安装路径。

• 检查Sanitizers配置：确认CMake中ASAN采用动态链接模式，确保配置了：

  CMAKE_CXX_FLAGS_DEBUG "/fsanitize=address /MDd"
  

  避免使用静态链接选项导致依赖路径识别错误。

内容的提问来源于stack exchange，提问作者Ross Maxx