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Question

我正在尝试在Linux上编译Windows程序，因此我通过Debian软件包管理器安装了W64-MingW32编译器。我制作了一个单独的cmakelists文件，其中选择了x86_64-w64-mingw32-g ++作为编译器。当我尝试运行构建脚本时，我会发现错误，因为它找不到我在项目中使用的库。这是我的cmake文件：

cmake_minimum_required (VERSION 3.5)

if (POLICY CMP0072)
    cmake_policy(SET CMP0072 NEW)
else (NOT POLICY CMP0072)
    message(STATUS "Could not use CMP0072 policy")
endif(POLICY CMP0072)

project(opengl-test LANGUAGES CXX)

set(CMAKE_CXX_COMPILER "/usr/bin/x86_64-w64-mingw32-g++")
set(CMAKE_C_COMPILER "/usr/bin/x86_64-w64-mingw32-gcc")
set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
include(GNUInstallDirs)

set(CMAKE_FIND_ROOT_PATH "/usr/x86_64-w64-mingw32")
set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)

set (source_dir "${PROJECT_SOURCE_DIR}/src/")
set (base_dir "${source_dir}/base/")
set (IMGUI_DIR "/usr/include/imgui")

set(GCC_COVERAGE_LINK_FLAGS "")
set(CMAKE_EXE_LINKER_FLAGS  "${CMAKE_EXE_LINKER_FLAGS} ${GCC_COVERAGE_LINK_FLAGS}")

file(GLOB source_files "${source_dir}/*.cpp")
file(GLOB_RECURSE base_files "${base_dir}/*.cpp")
file(GLOB imgui_files "${IMGUI_DIR}/*.cpp")

find_package(OpenGL REQUIRED)
find_package(GLEW REQUIRED)
find_package(PkgConfig REQUIRED)
pkg_search_module(GLFW REQUIRED glfw3)

add_executable(${PROJECT_NAME} ${source_files} ${imgui_files} ${base_files})

#target_compile_features(${PROJECT_NAME} PRIVATE cxx_std_17)
message(STATUS ${OPENGL_LIBRARIES})
target_link_libraries(${PROJECT_NAME} PUBLIC ${GLFW_LIBRARIES} ${OPENGL_LIBRARIES} ${GLEW_LIBRARIES})

cmakelists文件中的许多代码无能为力，因为我试图使它起作用，但没有任何作用。我把它留在里面，这样您就可以看到我尝试过的东西并且不起作用。 我可以运行此功能并进行编译，但是我会收到一个链接器错误。

CMake Warning:
  No source or binary directory provided.  Both will be assumed to be the
  same as the current working directory, but note that this warning will
  become a fatal error in future CMake releases.


-- /usr/lib/x86_64-linux-gnu/libOpenGL.so/usr/lib/x86_64-linux-gnu/libGLX.so/usr/lib/x86_64-linux-gnu/libGLU.so
-- Configuring done
CMake Warning at CMakeLists.txt:38 (add_executable):
  Cannot generate a safe runtime search path for target opengl-test because
  files in some directories may conflict with libraries in implicit
  directories:

    runtime library [libGLEW.so.2.1] in /usr/lib64 may be hidden by files in:
      /usr/lib/x86_64-linux-gnu

  Some of these libraries may not be found correctly.


-- Generating done
-- Build files have been written to: /home/user/Documents/CPP-Stuff/Scrap-Framework
[29/29] Linking CXX executable opengl-test
FAILED: opengl-test 
: && /usr/bin/x86_64-w64-mingw32-g++  -g   CMakeFiles/opengl-test.dir/src/main.cpp.o CMakeFiles/opengl-test.dir/usr/include/imgui/imgui.cpp.o CMakeFiles/opengl-test.dir/usr/include/imgui/imgui_demo.cpp.o CMakeFiles/opengl-test.dir/usr/include/imgui/imgui_draw.cpp.o CMakeFiles/opengl-test.dir/usr/include/imgui/imgui_impl_glfw.cpp.o CMakeFiles/opengl-test.dir/usr/include/imgui/imgui_impl_opengl3.cpp.o CMakeFiles/opengl-test.dir/usr/include/imgui/imgui_tables.cpp.o CMakeFiles/opengl-test.dir/usr/include/imgui/imgui_widgets.cpp.o CMakeFiles/opengl-test.dir/src/base/Application/Application.cpp.o CMakeFiles/opengl-test.dir/src/base/Application/Window.cpp.o CMakeFiles/opengl-test.dir/src/base/GL/Cubemap.cpp.o CMakeFiles/opengl-test.dir/src/base/GL/Texture.cpp.o CMakeFiles/opengl-test.dir/src/base/GL/UniformBuffer.cpp.o CMakeFiles/opengl-test.dir/src/base/GL/VertexBuffer.cpp.o CMakeFiles/opengl-test.dir/src/base/Input/Input.cpp.o CMakeFiles/opengl-test.dir/src/base/Model/Material.cpp.o CMakeFiles/opengl-test.dir/src/base/Model/Mesh.cpp.o CMakeFiles/opengl-test.dir/src/base/Model/Model.cpp.o CMakeFiles/opengl-test.dir/src/base/Model/ModelLoader.cpp.o CMakeFiles/opengl-test.dir/src/base/Renderer/FPSCamera.cpp.o CMakeFiles/opengl-test.dir/src/base/Renderer/MaterialManager.cpp.o CMakeFiles/opengl-test.dir/src/base/Renderer/Renderbuffer.cpp.o CMakeFiles/opengl-test.dir/src/base/Renderer/Renderer.cpp.o CMakeFiles/opengl-test.dir/src/base/Scene/Lights.cpp.o CMakeFiles/opengl-test.dir/src/base/Scene/Scene.cpp.o CMakeFiles/opengl-test.dir/src/base/Scene/Skybox.cpp.o CMakeFiles/opengl-test.dir/src/base/Shader/Shader.cpp.o CMakeFiles/opengl-test.dir/src/base/Shader/ShaderManager.cpp.o  -o opengl-test  -Wl,-rpath,/usr/lib/x86_64-linux-gnu -lglfw /usr/lib/x86_64-linux-gnu/libOpenGL.so /usr/lib/x86_64-linux-gnu/libGLX.so /usr/lib/x86_64-linux-gnu/libGLU.so /usr/lib64/libGLEW.so && :
/usr/bin/x86_64-w64-mingw32-ld: cannot find -lglfw
/usr/bin/x86_64-w64-mingw32-ld: /usr/lib/x86_64-linux-gnu/libOpenGL.so: error adding symbols: file in wrong format
collect2: error: ld returned 1 exit status
ninja: build stopped: subcommand failed.

包含文件位于/usr/include/code>中，但我也将它们放在/usr/x86_64-W64-Mingw32/include/codusth/code中。 有人知道如何解决此问题，还是在Linux上使用Windows编译的更好方法？

Answer 1

您需要构建您用于Windows使用的库，或找到预构建的库，例如 msysys2 repositories < /a>。您还需要将CMAKE指向这些库。

我已经制作了 quasi-msys2 可以自动化这两个。
示例用法：

# Install Clang, LLD, Wine. Then:
git clone https://github.com/holyblackcat/quasi-msys2
cd quasi-msys2/
make install _gcc _glfw _glew
env/shell.sh

# Build
cd your/project/location
mkdir build
cd build
cmake ..
make

# Run with Wine
./a.exe

这是我使用过的cmakelists.txt。我删除了交叉兼容的东西（自动处理）。

cmake_minimum_required (VERSION 3.5)

if (POLICY CMP0072)
    cmake_policy(SET CMP0072 NEW)
else (NOT POLICY CMP0072)
    message(STATUS "Could not use CMP0072 policy")
endif(POLICY CMP0072)

project(opengl-test LANGUAGES CXX)

find_package(OpenGL REQUIRED)
find_package(GLEW REQUIRED)
find_package(PkgConfig REQUIRED)
pkg_search_module(GLFW REQUIRED glfw3)

add_executable(a 1.cpp)

message(STATUS ${OPENGL_LIBRARIES})
target_link_libraries(a PUBLIC ${GLFW_LIBRARIES} ${OPENGL_LIBRARIES} GLEW::GLEW)

---

我还将它们放入/usr/x86_64-w64-Mingw32/include/

您不应该手动修改目录。将它们留给您的包装经理。