CXX编译器标识未知

Question

我们在使用Visual Studio 2012在Windows 7 64Bit下使用CMake(v2.8.12)编译项目时遇到问题.CMake给出了以下错误.我们已经尝试使用管理员权限从Visual Studio命令行启动Cmake.在CMake 2.8.11中似乎存在类似的错误:http://www.cmake.org/Bug/view.php？id = 14440

CMake Error at C:/Program Files (x86)/CMake 2.8/share/cmake-2.8/Modules/CMakeDetermineCompilerId.cmake:446 (execute_process):
  execute_process given COMMAND argument with no value.
Call Stack (most recent call first):
  C:/Program Files (x86)/CMake 2.8/share/cmake-2.8/Modules/CMakeDetermineCompilerId.cmake:48 (CMAKE_DETERMINE_COMPILER_ID_VENDOR)
  C:/Program Files (x86)/CMake 2.8/share/cmake-2.8/Modules/CMakeDetermineCCompiler.cmake:131 (CMAKE_DETERMINE_COMPILER_ID)
  CMakeLists.txt:2 (project)


The C compiler identification is unknown
CMake Error at C:/Program Files (x86)/CMake 2.8/share/cmake-2.8/Modules/CMakeDetermineCompilerId.cmake:446 (execute_process):
  execute_process given COMMAND argument with no value.
Call Stack (most recent call first):
  C:/Program Files (x86)/CMake 2.8/share/cmake-2.8/Modules/CMakeDetermineCompilerId.cmake:48 (CMAKE_DETERMINE_COMPILER_ID_VENDOR)
  C:/Program Files (x86)/CMake 2.8/share/cmake-2.8/Modules/CMakeDetermineCXXCompiler.cmake:127 (CMAKE_DETERMINE_COMPILER_ID)
  CMakeLists.txt:2 (project)


The CXX compiler identification is unknown
Could NOT find SWIG (missing:  SWIG_EXECUTABLE SWIG_DIR) 
CMake Warning at src/CMakeLists.txt:44 (message):
  SWIG was not found.  You will not be able to compile for C#.


Configuring incomplete, errors occurred!
See also "C:/Users/hci/laser_control/CMakeFiles/CMakeOutput.log".
See also "C:/Users/hci/laser_control/CMakeFiles/CMakeError.log".

Answer 1

那些错误信息

The C compiler identification is unknown
The CXX compiler identification is unknown

意味着 CMake 确实找到或假设了一个编译器，但它无法编译一个简单的测试程序。

查看CMakeFiles\CMakeError.log并检查那里的错误消息以查看：

1. CMake 确实使用了哪个编译器路径/命令行

2. 调用编译器的错误信息是什么

   例如 LINK : fatal error LNK1181: cannot open input file 'kernel32.lib'

如果您添加--debug-trycompile到cmake调用中，CMake 甚至会保留它尝试测试编译的文件（因此您可以从cmdshell的错误日志中复制/粘贴/重新运行命令行）。

上次遇到这个问题...

我最后一次遇到这个问题是我的 Visual Studio 2012 Professional 标准安装没有安装任何 Windows SDK（错误日志显示缺少 SDK 标头）。

验证您的 SDK 安装，例如检查您是否安装了任何资源编译器。它应该位于类似于以下内容的路径中：

C:\Program Files (x86)\Microsoft SDKs\Windows\v[some version]\bin\RC.Exe

由于我错过了这个 - 或者更准确的任何 SDK - 我安装了Windows 8.1 SDK（因为 Visual Studio 2012 确实针对 Windows 8.x），瞧，我的 CMake 能够再次编译（测试）程序。

参考

• Visual Studio 2012 是否包含完整的 Windows SDK
• CMakeLists.txt:30（项目）中的 CMake 错误：找不到 CMAKE_C_COMPILER

Answer 2

我得到终端输出：

The C compiler identification is unknown
The CXX compiler identification is unknown

我检查了 CMakeError.log 输出：

\build\CMakeFiles\CMakeError.log

它显示了错误：

warning MSB8003: The WindowsSDKDir property is not defined. Some build tools may not be found.

回到 Visual Studio，我需要安装 Windows 10 SDK：

安装 SDK 并运行 cmake 后显示：

Selecting Windows SDK version 10.0.19041.0 to target Windows 10.0.18363.
The C compiler identification is MSVC 19.28.29334.0
The CXX compiler identification is MSVC 19.28.29334.0

并搭建成功！

Answer 3

我有同样的问题,并修复了运行cmake作为管理员