【CMAKE】求助-cmake 请问谁知道CMAKE如何使用?真正的初学者，win7系统，使用VS2005

Posted 2023-05-03

问题来源于一个文档，
1,准备工作:首先,在/backup 目录建立一个 cmake 目录,用来放置我们学习过程中的所有练习。mkdir -p /backup/cmake以后我们所有的 cmake 练习都会放在/backup/cmake 的子目录下(你也可以自行安排目录,这个并不是限制,仅仅是为了叙述的方便)然后在 cmake 建立第一个练习目录 t1cd /backup/cmakemkdir t1cd t1在 t1 目录建立 main.c 和 CMakeLists.txt(注意文件名大小写):main.c 文件内容://main.c#include <stdio.h>int main()     printf(“Hello World from t1 Main!\n”);     return 0;CmakeLists.txt 文件内容:PROJECT (HELLO)SET(SRC_LIST main.c)MESSAGE(STATUS "This is BINARY dir " $HELLO_BINARY_DIR)MESSAGE(STATUS "This is SOURCE dir "$HELLO_SOURCE_DIR)ADD_EXECUTABLE(hello SRC_LIST)2,开始构建所有的文件创建完成后,t1 目录中应该存在 main.c 和 CMakeLists.txt

两个文件接下来我们来构建这个工程,在这个目录运行:cmake . (注意命令后面的点号,代表本目录)。输出大概是这个样子:-- Check for working C compiler: /usr/bin/gcc-- Check for working C compiler: /usr/bin/gcc -- works-- Check size of void*-- Check size of void* - done
……
请问 那个“在这个目录运行:cmake . (注意命令后面的点号,代表本目录)。”如何在这个目录运行的啊？

参考技术A 这是在bash（或win下的mingw什么的）命令行上敲的命令...追问

我查了 bash 和 mingw，感觉很复杂，但说明书上好像显得没那么复杂啊……（我是用的是win7系统），难道是cmd中？

追答

cmd也可以的 但是你安装cmake时要把cmake路径加到path中

追问

阁下可以描述下 如何 把cmake路径加到path中吗？

MAC: CMake compile CloudCompare error:By not providing "FindQt5PrintSupport.cmake" in CMAK

ERROR message as:

CMake Warning at CC/CMakeLists.txt:26 (message):
  CCLib configured without parallel algorithm capabilities - see
  COMPILE_CC_CORE_LIB_WITH_TBB


CMake Error at cmake/CMakeExternalLibs.cmake:18 (find_package):
  By not providing "FindQt5PrintSupport.cmake" in CMAKE_MODULE_PATH this
  project has asked CMake to find a package configuration file provided by
  "Qt5PrintSupport", but CMake did not find one.

  Could not find a package configuration file provided by "Qt5PrintSupport"
  with any of the following names:

    Qt5PrintSupportConfig.cmake
    qt5printsupport-config.cmake

  Add the installation prefix of "Qt5PrintSupport" to CMAKE_PREFIX_PATH or
  set "Qt5PrintSupport_DIR" to a directory containing one of the above files.
  If "Qt5PrintSupport" provides a separate development package or SDK, be
  sure it has been installed.
Call Stack (most recent call first):
  CC/CMakeLists.txt:32 (include)


-- Configuring incomplete, errors occurred!
See also "/Users/mac/liuxueli/CloudCompare-master/build/CMakeFiles/CMakeOutput.log".
ShirleydeMacBook-Pro:build mac$ vim ../cmake/CMakeExternalLibs.cmake 
ShirleydeMacBook-Pro:build mac$ cmake ..
cmake policies active:
cmake policies active:
CMake Warning at CC/CMakeLists.txt:26 (message):
  CCLib configured without parallel algorithm capabilities - see
  COMPILE_CC_CORE_LIB_WITH_TBB


CMake Error at cmake/CMakeExternalLibs.cmake:19 (find_package):
  By not providing "FindQt5Concurrent.cmake" in CMAKE_MODULE_PATH this
  project has asked CMake to find a package configuration file provided by
  "Qt5Concurrent", but CMake did not find one.

  Could not find a package configuration file provided by "Qt5Concurrent"
  with any of the following names:

    Qt5ConcurrentConfig.cmake
    qt5concurrent-config.cmake

  Add the installation prefix of "Qt5Concurrent" to CMAKE_PREFIX_PATH or set
  "Qt5Concurrent_DIR" to a directory containing one of the above files.  If
  "Qt5Concurrent" provides a separate development package or SDK, be sure it
  has been installed.
Call Stack (most recent call first):
  CC/CMakeLists.txt:32 (include)


-- Configuring incomplete, errors occurred!
See also "/Users/mac/liuxueli/CloudCompare-

解决方案：

修改cmake/CMakeExternalLibs.cmake文件，添加一行内容：

set (CMAKE_PREFIX_PATH "/usr/local/Cellar/qt/5.10.1/lib/cmake")

/usr/local/Cellar/qt/5.10.1/lib/cmake 为对应的QT安装路径

修改后重新cmake .. 即可成功。