包含库的C ++运行文件失败而没有编译错误（CMake / CLion） [英] C++ running file with included library failes without compiling error (CMake / CLion)

问题描述

我遇到了以下问题；我的超级库名为mylib：看起来像这样：

I got the following problem; I have my super library called mylib: it looks like this:

我的项目文件夹称为库...

---

mylib.hpp

My project folder is called library...

---

mylib.hpp

namespace XYZ {

#ifndef LIBRARY_MYLIB_HPP
#define LIBRARY_MYLIB_HPP

    int add(int, int);

#endif //LIBRARY_MYLIB_HPP

}

mylib.cpp

#include "mylib.hpp"

namespace XYZ {

    int add(int a, int b) {
        return a + b;
    }

}

---

它们在同一个目录中。

---

They are in the same directory.

我使用CMake和以下CMakeLists.txt构建它

I Build it using CMake with the following CMakeLists.txt

cmake_minimum_required(VERSION 3.6)
project(library)

add_library(library SHARED mylib.cpp)

建筑物输出：

[ 50%] Building CXX object CMakeFiles/library.dir/mylib.cpp.obj
[100%] Linking CXX shared library liblibrary.dll
[100%] Built target library

这可以正常工作，这给了我一个* .dll文件。

---

我现在尝试在其他项目中使用该库

This works, this gives me a *.dll file like it's supposed to.

---

I now try to use this library in my other project

我复制了.hpp文件放入项目位置。
我的main.cpp看起来像这样：

I copied the .hpp file into the project location. my main.cpp looks like this:

main.cpp

#include <iostream>
#include "mylib.hpp"

int main() {
    std::cout << "Hello";
    std::cout << XYZ::add(5, 7) << std::endl;
    return 0;
}

CMakeLists.txt

cmake_minimum_required(VERSION 3.6)
project(uselib)

set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
set(SOURCE_FILES main.cpp)
add_executable(uselib ${SOURCE_FILES})
target_link_libraries(uselib C:/User/........./liblibrary.dll)

建筑输出：

[ 50%] Building CXX object CMakeFiles/uselib.dir/main.cpp.obj
[100%] Linking CXX executable uselib.exe
[100%] Built target uselib

---

有效。好了，现在解决我的问题。

---

Works. Well now to my problem.

一旦我尝试启动它，它就会崩溃，并显示以下退出代码：

Once I try to start it, it crashes with the following exit code:

C:\Users\......\uselib.exe

Process finished with exit code -1073741515 (0xC0000135)

当我对方法调用进行注释时，它就像一个符咒。

When I comment the method call out, it works like a charm.

我在这里呆了几个小时，有什么帮助吗？

I've been stuck here for hours, any help?

推荐答案

退出代码- 1073741515（0xC0000135）为STATUS_DLL_NOT_FOUND。这表明在运行时该程序无法使用该dll。在Windows中，dll的搜索路径如下：

Exit code -1073741515 (0xC0000135) is STATUS_DLL_NOT_FOUND. This would indicate that the dll isn't available to the program at runtime. In windows, the search path for a dll is as follows:

1. 当前进程的可执行文件所在的目录
   。


2. 当前目录。


3. Windows系统目录。 GetSystemDirectory 函数
   检索此目录的路径。


4. Windows目录。 GetWindowsDirectory 函数检索
   此目录的路径。


5. PATH环境变量中列出的目录。

1. The directory where the executable for the current process is located.
2. The current directory.
3. The Windows system directory. The GetSystemDirectory function retrieves the path of this directory.
4. The Windows directory. The GetWindowsDirectory function retrieves the path of this directory.
5. The directories listed in the PATH environment variable.

验证liblibrary.dll位于可执行文件可以找到的位置。

Verify that liblibrary.dll is located in a place it can be found by the executable.

完成此操作后，您可能希望添加一个宏来帮助您将dll复制到可执行文件目录中，作为构建的一部分。可以这样在cmake中完成：

Once you have done that, you may want to add a macro to help you copy the dll to the executable directory as part of your build. This can be done in cmake like so:

add_custom_command(TARGET uselib POST_BUILD        # Adds a post-build event to uselib
COMMAND ${CMAKE_COMMAND} -E copy_if_different  # which executes "cmake - E copy_if_different..."
    "${PROJECT_SOURCE_DIR}/libs/liblibrary.dll"      # this is in-file
    $<TARGET_FILE_DIR:uselib>)                 # this is out-file path

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