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我在 Windows 7 中使用 cmake 和 ninja。它完美无瑕，直到我打开旧版本的 IDE。现在 cmake 使用了错误的编译器。它现在尝试使用 C:/Program Files (x86)/Embarcadero/RAD Studio/9.0/bin/bcc32x.exe 而不是 C:/Program Files (x86)/Embarcadero/Studio/19.0/bin/bcc32x.exe。当然，我在 stackoverflow 上阅读了类似的问题，并尝试了那里描述的解决方案，但似乎没有任何效果（例如，你如何设置 CMAKE_C_COMPILER 和 CMAKE_CXX_COMPILER 来为 iOS 构建 Assimp？）。即使重新安装 cmake 也无济于事。我的windows环境变量没问题。

当我尝试在命令行中设置 CMake 变量时，如下所示：

cmake -G Ninja -D CMAKE_C_COMPILER="C:\\Program Files     
(x86)\\Embarcadero\\Studio\\19.0\\bin\\bcc32x.exe" -D   
CMAKE_CXX_COMPILER="C:\\Program Files (x86)\\Embarcadero\\Studio\\19.0 
\\bin\\bcc32x.exe"

cmd输出是

Microsoft Windows [Version 6.1.7601]
Copyright (c) 2009 Microsoft Corporation. Alle Rechte vorbehalten.

C:\Users\cld>cd c:\

c:\>cmake -G Ninja -D CMAKE_C_COMPILER="C:\\Program Files     
(x86)\\Embarcadero\\Studio\\19.0\\bin\\bcc32x.exe" -D   
CMAKE_CXX_COMPILER="C:\\Program Files (x86)\\Embarcadero\\Studio\\19.0 
\\bin\\bcc32x.exe"

C:\Users\cld\Desktop\smallCmakeTest
-- The C compiler identification is Embarcadero 7.30.36015
-- The CXX compiler identification is Embarcadero 7.30.36015
-- Check for working C compiler: C:/Program Files (x86)/Embarcadero/RAD  
Studio/9.0/bin/bcc32x.exe
-- Check for working C compiler: C:/Program Files (x86)/Embarcadero/RAD  
Studio/9.0/bin/bcc32x.exe -- broken
CMake Error at C:/Program Files (x86)/CMake/share/cmake-3.10/Modules 
/CMakeTestCCompiler.cmake:52 (message):
  The C compiler

    "C:/Program Files (x86)/Embarcadero/RAD Studio/9.0/bin/bcc32x.exe"

  is not able to compile a simple test program.

  It fails with the following output:

     Change Dir: C:/Users/cld/Desktop/smallCmakeTest/CMakeFiles/CMakeTmp

    Run Build Command:"C:/ninja/ninja.exe" "cmTC_c1b2f"
    [1/2] Building C object CMakeFiles\cmTC_c1b2f.dir\testCCompiler.c.obj
    FAILED: CMakeFiles/cmTC_c1b2f.dir/testCCompiler.c.obj
    "C:\Program Files (x86)\Embarcadero\RAD Studio\9.0\bin\bcc32x.exe"    
-I"C:\Program Files (x86)\Embarcadero\RAD Studio\9.0\include\windows\crtl"
-I"C:\Program Files (x86)\Embarcadero\RAD Studio\9.0\
include\windows\sdk" -I"C:\Program Files (x86)\Embarcadero\RAD Studio\9.0  
\include\windows\rtl" -I"C:\Program Files (x86)\Embarcadero\RAD Studio\9.0  
\include\dinkumware64" -tM  -O0 -v -oCMakeFiles\cmTC_
c1b2f.dir\testCCompiler.c.obj -c testCCompiler.c
    CreateProcess failed: The system cannot find the file specified.
    ninja: build stopped: subcommand failed.




  CMake will not be able to correctly generate this project.
Call Stack (most recent call first):
  CMakeLists.txt:1 (project)


CMake Error at CMakeLists.txt:1 (project):
  The CMAKE_CXX_COMPILER:

    C:/Program Files (x86)/Embarcadero/RAD Studio/9.0/bin/bcc32x.exe

  is not a full path to an existing compiler tool.

  Tell CMake where to find the compiler by setting either the environment
  variable "CXX" or the CMake cache entry CMAKE_CXX_COMPILER to the full   
path
  to the compiler, or to the compiler name if it is in the PATH.


 CMake Warning (dev) in CMakeLists.txt:
  No cmake_minimum_required command is present.  A line of code such as

    cmake_minimum_required(VERSION 3.10)

      should be added at the top of the file.  The version specified may be    
     lower
      if you wish to support older CMake versions for this project.  For   
more
      information run "cmake --help-policy CMP0000".
     This warning is for project developers.  Use -Wno-dev to suppress it.

     -- Configuring incomplete, errors occurred!
    See also "C:/Users/cld/Desktop/smallCmakeTest/CMakeFiles  
/CMakeOutput.log".
    See also "C:/Users/cld/Desktop/smallCmakeTest/CMakeFiles
/CMakeError.log".
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