【发布时间】:2018-03-30 04:25:48
【问题描述】:
尝试在 Windows 7 中构建 nanomsg project 时遇到错误:
cmake ..
-- Building for: NMake Makefiles
-- The C compiler identification is GNU 4.7.1
-- Check for working C compiler: C:/Program Files (x86)/CodeBlocks/MinGW/bin/gcc.exe
CMake Error: Generator: execution of make failed. Make command was: "nmake" "/NOLOGO" "cmTC_5d837\fast"
-- Check for working C compiler: C:/Program Files (x86)/CodeBlocks/MinGW/bin/gcc.exe -- broken
CMake Error at C:/Program Files (x86)/cmake-3.9.4-win64-x64/share/cmake-3.9/Modules/CMakeTestCCompiler.cmake:51 (message):
The C compiler "C:/Program Files (x86)/CodeBlocks/MinGW/bin/gcc.exe" is not
able to compile a simple test program.
It fails with the following output:
Change Dir: C:/Users/User/Documents/Internal/nanomsg-master/build/CMakeFiles/CMakeTmp
Run Build Command:"nmake" "/NOLOGO" "cmTC_5d837\fast"
Generator: execution of make failed. Make command was: "nmake" "/NOLOGO"
"cmTC_5d837\fast"
CMake will not be able to correctly generate this project.
Call Stack (most recent call first):
CMakeLists.txt:29 (project)
-- Configuring incomplete, errors occurred!
See also "C:/Users/User/Documents/Internal/nanomsg-master/build/CMakeFiles/CMakeOutput.log".
See also "C:/Users/User/Documents/Internal/nanomsg-master/build/CMakeFiles/CMakeError.log".
我使用gcc编译器和Mingw工具链中的make,我可以在一个简单的例子中成功运行gcc.exe和mingw32-make.exe。
在CMakeCache.txt文件中缓存变量设置如下:
//C compiler
CMAKE_C_COMPILER:FILEPATH=C:/Program Files (x86)/CodeBlocks/MinGW/bin/gcc.exe
//Program used to build from makefiles.
CMAKE_MAKE_PROGRAM:STRING=nmake
我认为问题来自CMAKE_MAKE_PROGRAM 变量,它应该采用C:/Program Files (x86)/CodeBlocks/MinGW/bin/mingw32-make.exe,但是我不明白它从哪里获得值nmake。
即使我手动更换它,我也会遇到同样的问题。
我的问题:
- CMake 如何填充缓存变量?
- 为什么
CMAKE_MAKE_PROGRAM取值nmake? - 为什么手动更改此变量不能解决问题?
【问题讨论】:
-
CMake Error at CMakeLists.txt:30 (project): No CMAKE_C_COMPILER could be found 的可能重复项。您需要在 CMake 命令行中指定一个生成器,例如
-G "MinGW Makefiles"并且 - 根据您安装的编译器数量 - 还有编译器的完整路径。 -
@Florian,感谢您的反馈,可以解决问题:)。当我更改生成器时发生了什么,CMake 有内部脚本,可以搜索 c 编译器和 make 程序,然后更新缓存变量,因为现在我可以看到 CMakeCache.txt 中的变量具有良好的值
-
@Mouin -
nmake是微软的制作工具。您可以从Visual C++ 2015 Build Tools 获取它的副本。您不再需要下载 Visual Studio 或处理即将到期的试用版。构建工具是 Visual Studio 工具的子集,它包括编译器、链接器、nmake 和一些其他 Windows 基本工具。