Question

我很难在我的CLion项目中使用GLFW Windows预编译二进制文件。这些库放在外部目录中。我不希望他们在我的项目库中，但是（当然）在发布应用程序时应该发货。我是C ++的新手，但我认为实现这一点可能就像在Java中一样简单（Intellij Idea - ＆gt; dependencies - ＆gt; ...）。

GLFW Windows pre-compiled binaries

我使用MinGW 5.0和CMake 3.10.2; 我的CMakeLists.txt：

cmake_minimum_required(VERSION 3.10)
project(Hatsudouki_core)

set(CMAKE_CXX_STANDARD 17)

link_directories(F:\\C++\\ExternalLibraries\\GLFW\\lib-mingw-w64)
include_directories(F:\\C++\\ExternalLibraries\\GLFW\\include)

add_executable(Hatsudouki_core main.cpp)

target_link_libraries(Hatsudouki_core glfw3)

Main.cpp的

#include <iostream>
#include <GLFW/glfw3.h>

int main() {
    if (!glfwInit())
         std::cout << "error!" << std::endl;
    else
         std::cout << "success!" << std::endl;
    return 0;
}

构建输出

"F:\C++\CLion 2018.1\bin\cmake\bin\cmake.exe" --build C:\Users\simon\CLionProjects\Hatsudouki-core\cmake-build-debug --target Hatsudouki_core -- -j 4
[ 50%] Linking CXX executable Hatsudouki_core.exe
CMakeFiles\Hatsudouki_core.dir/objects.a(main.cpp.obj): In function `main':
C:/Users/simon/CLionProjects/Hatsudouki-core/main.cpp:5: undefined reference to `glfwInit'
collect2.exe: error: ld returned 1 exit status
mingw32-make.exe[3]: *** [Hatsudouki_core.exe] Error 1
CMakeFiles\Hatsudouki_core.dir\build.make:96: recipe for target 'Hatsudouki_core.exe' failed
CMakeFiles\Makefile2:66: recipe for target 'CMakeFiles/Hatsudouki_core.dir/all' failed
mingw32-make.exe[2]: *** [CMakeFiles/Hatsudouki_core.dir/all] Error 2
CMakeFiles\Makefile2:78: recipe for target 'CMakeFiles/Hatsudouki_core.dir/rule' failed
mingw32-make.exe[1]: *** [CMakeFiles/Hatsudouki_core.dir/rule] Error 2
Makefile:117: recipe for target 'Hatsudouki_core' failed
mingw32-make.exe: *** [Hatsudouki_core] Error 2

我尝试了下面提到的解决方案：
- GLFW doc和GLFW doc2（查找包不起作用，没有CMake文件）
- Github issue report与Github issue report 2相关，然后导致将FindGLFW.cmake放入某个目录的解决方案？试图把它放在GLFW\FindGLFW.cmake但不起作用 - 链接不像这里提到的那样有效：Stackoverflow

图像GLFW目录：GLFW Windows pre-compiled binaries

我想我只是不明白CMake，外部库和C ++是如何共同完成这项相当容易的任务的。我相信与Java的比较会有所帮助（过去常常使用gradle）

编辑1 正如建议我添加以下内容：我将Findglfw3.cmake放入PROJECT/cmake/Modules/：

# Copyright (c) 2015 Andrew Kelley
# This file is MIT licensed.
# See http://opensource.org/licenses/MIT

# GLFW_FOUND
# GLFW_INCLUDE_DIR
# GLFW_LIBRARY

find_path(GLFW_INCLUDE_DIR NAMES F:\\C++\\ExternalLibraries\\GLFW\\include\\GLFW\\glfw3.h)

find_library(GLFW_LIBRARY NAMES glfw glfw3)

include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(GLFW DEFAULT_MSG GLFW_LIBRARY GLFW_INCLUDE_DIR)

mark_as_advanced(GLFW_INCLUDE_DIR GLFW_LIBRARY)

并在我的CMakeLists.txt中添加以下行：

find_package(glfw3 REQUIRED)
include_directories(${glfw3_INCLUDE_DIRS})
set(LIBS ${LIBS} ${glfw3_LIBRARIES})
set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_SOURCE_DIR}/cmake/Modules/")

target_link_libraries(hatsudouki_core ${LIBS})

我也试过Findglfw3.cmake：

find_path(GLFW_INCLUDE_DIR NAMES GLFW/glfw3.h)

在原始文件中是相同的。两者都不起作用;错误：

"F:\C++\CLion 2018.1\bin\cmake\bin\cmake.exe" --build C:\Users\simon\CLionProjects\Hatsudouki-core\cmake-build-debug --target Hatsudouki_core -- -j 4
CMake Error at CMakeLists.txt:6 (find_package):
-- Configuring incomplete, errors occurred!
By not providing "Findglfw3.cmake" in CMAKE_MODULE_PATH this project has
See also "C:/Users/simon/CLionProjects/Hatsudouki-core/cmake-build-debug/CMakeFiles/CMakeOutput.log".
asked CMake to find a package configuration file provided by "glfw3", but
CMake did not find one.

Makefile:175: recipe for target 'cmake_check_build_system' failed
Could not find a package configuration file provided by "glfw3" with any of
the following names:

glfw3Config.cmake
glfw3-config.cmake

Add the installation prefix of "glfw3" to CMAKE_PREFIX_PATH or set
"glfw3_DIR" to a directory containing one of the above files.  If "glfw3"
provides a separate development package or SDK, be sure it has been
installed.
mingw32-make.exe: *** [cmake_check_build_system] Error 1

Answer 1

首先，您需要安装glfw包。如果您使用的是MSYS2，则可以使用64位窗口上的pacman -S mingw-w64-x86_64-glfw和32位窗口上的pacman -S mingw-w64-i686-glfw进行安装。您需要使用find_package让cmake自动找到glfw库，而不是手动找到它们。如果您使用MSYS2 不，那么它可能很难困难。看看这段代码。

cmake_minimum_required(VERSION 3.10)
project(Hatsudouki_core)

set(CMAKE_CXX_STANDARD 17)

add_executable(Hatsudouki_core main.cpp)

find_package(glfw3 REQUIRED) # Find the GLFW library
target_link_libraries(Hatsudouki_core PRIVATE glfw) # Finally, link to them.

我建议您使用MSYS2如果需要预编译库。它有一个非常好的包管理器，称为pacman。

Answer 2

正如here

所解释的那样

在Findglfw3.cmake中创建PROJECT/cmake/Modules/文件，该文件类似于

# GLFW_FOUND
# GLFW_INCLUDE_DIR
# GLFW_LIBRARY

set(FIND_GLFW_PATHS "F:\\C++\\ExternalLibraries\\GLFW")

find_path(GLFW_INCLUDE_DIR NAMES GLFW/glfw3 GLFW/glfw3.h PATH_SUFFIXES include PATHS ${FIND_GLFW_PATHS})
find_library(GLFW_LIBRARY NAMES glfw3 glfw3.a libglfw3 libglfw3.a PATH_SUFFIXES lib-mingw PATHS ${FIND_GLFW_PATHS})

include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(GLFW DEFAULT_MSG GLFW_LIBRARY GLFW_INCLUDE_DIR)

mark_as_advanced(GLFW_INCLUDE_DIR GLFW_LIBRARY)

在CMakeLists.txt

中定义模块路径

#Define module path
list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_LIST_DIR}/cmake/Modules")

此外，链接包含目录和库以及CMakeLists.txt

中的项目

#Define static GLFW libraries and header files
find_package(glfw3 REQUIRED)
include_directories(${GLFW_INCLUDE_DIR})
...
target_link_libraries(Hatsudouki_core ${GLFW_LIBRARY})

通过CMake将外部库包含到CLion项目中

2 个答案: