CMake 3.8.0在生成文件中生成错误的链接命令 [英] CMake 3.8.0 generates wrong link command in makefiles

问题描述

我运行cmake生成一个带有STATIC库的项目，该项目成功完成后，ninja和mingw32-make都无法使其目标链接.对于共享库或可执行文件，此相同设置可以正常工作.我已经为忍者"和"MinGW Makefiles"生成器尝试过:

After I run cmake to generate a project with a STATIC library, which completes successfully, both ninja and mingw32-make fail to make their targets at linking. For SHARED libraries or executables this same setup worked fine. I've tried this both for "Ninja" and "MinGW Makefiles" generators:

忍者输出:

[2/2] Linking CXX static library hello_wsl.lib
FAILED: hello_wsl.lib
cmd.exe /C "cd . && "C:\Program Files\CMake\bin\cmake.exe" -E remove hello_wsl.lib && "" qc hello_wsl.lib  CMakeFiles/hello_wsl.dir/lib_hello_world.cpp.obj && cd ."
"""" no se reconoce como un comando interno o externo,
programa o archivo por lotes ejecutable.
ninja: build stopped: subcommand failed.

mingw32-make输出:

mingw32-make output:

Scanning dependencies of target hello_wsl
[ 50%] Building CXX object CMakeFiles/hello_wsl.dir/lib_hello_world.cpp.obj
[100%] Linking CXX static library hello_wsl.lib
Error running link command: El parámetro no es correcto
CMakeFiles\hello_wsl.dir\build.make:93: recipe for target 'hello_wsl.lib' failed
mingw32-make.exe[2]: *** [hello_wsl.lib] Error 2
CMakeFiles\Makefile2:66: recipe for target 'CMakeFiles/hello_wsl.dir/all' failed
mingw32-make.exe[1]: *** [CMakeFiles/hello_wsl.dir/all] Error 2
Makefile:82: recipe for target 'all' failed
mingw32-make.exe: *** [all] Error 2

还要看看由"MinGW Makefiles"生成的"project_root \ build \ CMakeFiles \ hello_wsl.dir \ link.txt":

Also take a look at "project_root\build\CMakeFiles\hello_wsl.dir\link.txt" generated by "MinGW Makefiles":

"" qc hello_wsl.lib  CMakeFiles/hello_wsl.dir/lib_hello_world.cpp.obj

---

分步示例项目，以重现"MinGW Makefiles"的问题:

• 安装CMake 3.8.0
• 安装MinGWx64 6.3 Windows二进制文件(

  ---

  Sample project, in steps, to reproduce the problem for "MinGW Makefiles":

  • Install CMake 3.8.0
  • Install MinGWx64 6.3 windows binaries (I've downloaded them from here)
  • Create a root folder for this project, I'll call it project_root in this sample.
  • Create these subfolders inside:
    1. project_root \ build
    2. project_root \ include
    3. project_root \ include \ lib_hello_world

  • 创建以下文件:

  • Create these files:

    1. project_root \ include \ lib_hello_world \ lib_hello_world.cpp:

    #include <iostream>
    
    class HelloWorldClass{
        HelloWorldClass(){
            std::cout << "Hello, world!" << std::endl;
        }
    };
    

  • project_root \ include \ lib_hello_world \ CMakeLists.txt:

    cmake_minimum_required(VERSION 3.8.0)
    project(lib_hello_world)
    
    add_library(lib_hello_world STATIC lib_hello_world.cpp)
    

  • project_root \ toolchain.cmake:

    # Target system (cross compile)
    set(CMAKE_SYSTEM_NAME WindowsStore)
    set(CMAKE_SYSTEM_VERSION 10.0)
    
    # BIN utils
    SET(CMAKE_AR      "$ENV{MINGW_W64_BIN_DIR}/ar.exe")
    SET(CMAKE_OBJCOPY "$ENV{MINGW_W64_BIN_DIR}/objcopy.exe")
    SET(CMAKE_OBJDUMP "$ENV{MINGW_W64_BIN_DIR}/objdump.exe")
    SET(CMAKE_RANLIB  "$ENV{MINGW_W64_BIN_DIR}/ranlib.exe")
    SET(CMAKE_NM      "$ENV{MINGW_W64_BIN_DIR}/nm.exe")
    SET(CMAKE_STRIP   "$ENV{MINGW_W64_BIN_DIR}/strip.exe")
    
    # C compiler
    SET(CMAKE_C_COMPILER "$ENV{MINGW_W64_BIN_DIR}/gcc.exe")
    
    # CXX compiler
    SET(CMAKE_CXX_COMPILER "$ENV{MINGW_W64_BIN_DIR}/g++.exe")
    
    # LINKER
    SET(CMAKE_LINKER "$ENV{MINGW_W64_BIN_DIR}/ld.bfd.exe")
    

  • project_root \ configure.bat:

    @ECHO OFF
    SETLOCAL
    @ECHO OFF
    REM Change these variables to the corresponding paths on your own system
    SET "CMAKE_EXECUTABLE=C:\Program Files\CMake\bin\cmake.exe"
    SET "MINGW_W64_BIN_DIR=C:/Program Files/MinGWx64/bin"
    CD "%~dp0\build"
    CALL "%CMAKE_EXECUTABLE%" "-DCMAKE_EXPORT_COMPILE_COMMANDS=ON" "-DCMAKE_BUILD_TYPE=Debug" -G "MinGW Makefiles" "-DCMAKE_MAKE_PROGRAM='%MINGW_W64_BIN_DIR%/mingw32-make.exe'" "-DCMAKE_TOOLCHAIN_FILE='%~dp0/toolchain.cmake'" "%~dp0/include/lib_hello_world"
    ENDLOCAL
    

  • project_root \ build.bat:

    @ECHO OFF
    SETLOCAL
    @ECHO OFF
    REM Change this variable to the corresponding path on your own system
    SET "MINGW_W64_BIN_DIR=C:/Program Files/MinGWx64/bin"
    CD "%~dp0\build"
    CALL "%MINGW_W64_BIN_DIR%/mingw32-make.exe"
    ENDLOCAL
    

  • 最后，打开CMD并运行命令:

  • Finally, open CMD and run the commands:

    project_root\configure.bat
    project_root\build.bat
    

  • 创建此文件: project_root \ fix.bat:

  • Create this file: project_root\fix.bat:

  @ECHO OFF
  SETLOCAL
  @ECHO OFF
  
  MOVE "%~dp0\build\CMakeCache.txt" ".\"
  RMDIR "%~dp0\build" /S /Q
  MKDIR "%~dp0\build"
  MOVE "%~dp0\CMakeCache.txt" ".\build\"
  
  ENDLOCAL
  

  • 重现错误后，打开CMD并运行:

  • After reproducing the error, open CMD and run:

    project_root\fix.bat
    project_root\configure.bat
    project_root\build.bat
    

  修复后的

  • 忍者输出(成功链接):

  • ninja output after fix (successfully linked):

    [2/2] Linking CXX static library hello_wsl.lib
    

  • mingw32-make修复后(成功链接):

  • mingw32-make after fix (successfully linked):

    Scanning dependencies of target hello_wsl
    [ 50%] Building CXX object CMakeFiles/hello_wsl.dir/lib_hello_world.cpp.obj
    [100%] Linking CXX static library hello_wsl.lib
    [100%] Built target hello_wsl
    

  • 在应用修订并重新运行配置和构建之前，我对CMakeCache.txt(CMakeCache.txt.before_fix)进行了备份.重新配置并成功构建项目后，CMakeCache.txt.before_fix和CMakeCache.txt文件之间没有区别.

  • I made a backup of CMakeCache.txt (CMakeCache.txt.before_fix) before applying the fix and reruning configure and build. There was no diference between the CMakeCache.txt.before_fix and CMakeCache.txt files after reconfiguring and successfully building the project.

  我还备份了"rules.ninja"，然后将其与FC进行了比较.这是FC"project_root \ rules.ninja.before_fix""project_root \ build \ rules.ninja"的输出:

  I also made a backup of "rules.ninja" and then compared them with FC. This is the output of FC "project_root\rules.ninja.before_fix" "project_root\build\rules.ninja":

  Comparando archivos .\rules.ninja.before_fix y .\BUILD\RULES.NINJA
  ***** .\rules.ninja.before_fix
  rule CXX_STATIC_LIBRARY_LINKER__lib_hello_world
  command = cmd.exe /C "$PRE_LINK && "C:\Program Files\CMake\bin\cmake.exe" -E remove $TARGET_FILE && "" qc $TARGET_FILE $LINK_
  FLAGS $in && $POST_BUILD"
  description = Linking CXX static library $TARGET_FILE
  ***** .\BUILD\RULES.NINJA
  rule CXX_STATIC_LIBRARY_LINKER__lib_hello_world
  command = cmd.exe /C "$PRE_LINK && "C:\Program Files\CMake\bin\cmake.exe" -E remove $TARGET_FILE && C:\PROGRA~1\MinGWx64\bin\
  ar.exe qc $TARGET_FILE $LINK_FLAGS $in && C:\PROGRA~1\MinGWx64\bin\ranlib.exe $TARGET_FILE && $POST_BUILD"
  description = Linking CXX static library $TARGET_FILE
  *****
  

  • 并对"MinGW Makefiles"执行相同的操作.这是FC"project_root \ link.txt.before_fix""project_root \ build \ CMakeFiles \ lib_hello_world.dir \ link.txt"的输出:

  • And did the same for "MinGW Makefiles". This is the output of FC "project_root\link.txt.before_fix" "project_root\build\CMakeFiles\lib_hello_world.dir\link.txt":

    Comparando archivos .\link.txt.before_fix y .\BUILD\CMAKEFILES\LIB_HELLO_WORLD.DIR\LINK.TXT
    ***** .\link.txt.before_fix
    "" qc hello_wsl.lib  CMakeFiles/hello_wsl.dir/lib_hello_world.cpp.obj
    ***** .\BUILD\CMAKEFILES\LIB_HELLO_WORLD.DIR\LINK.TXT
    C:\PROGRA~1\MinGWx64\bin\ar.exe qc lib_hello_world.lib  CMakeFiles/lib_hello_world.dir/lib_hello_world.cpp.obj
    C:\PROGRA~1\MinGWx64\bin\ranlib.exe lib_hello_world.lib
    *****
    

  推荐答案

  有关 CMAKE_AR 和 CMAKE_RUNLIB 变量的一些具体说明:根据

  There is some specific about CMAKE_AR and CMAKE_RUNLIB variables: according to that bugreport they should be declared as CACHED:

  SET(CMAKE_AR      "$ENV{MINGW_W64_BIN_DIR}/ar.exe" CACHE FILEPATH "Arhiver")
  SET(CMAKE_RANLIB  "$ENV{MINGW_W64_BIN_DIR}/ranlib.exe" CACHE FILEPATH "Runlib")
  

  这篇关于CMake 3.8.0在生成文件中生成错误的链接命令的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！