创建静态库并使用prefake连接到它 [英] Creating static library and linking to it with premake

问题描述

我目前正在尝试学习如何使用premake 4，以便将其应用于OpenGL sdk 。我目前正试图做一个Visual Studio 2010解决方案构建2个项目，一个是静态库，另一个包含一个主要的源文件，与主要方法。

I am currently trying to learn how to use premake 4 in order to apply it to the OpenGL sdk. I am currently trying to make a Visual Studio 2010 solution that constructs 2 projects, one being a static library, the other contains a single main source file, with the main method.

这个项目非常简单，仅用于学习预习的目的。在静态库项目中，名为Test，我有2个文件，Test.h和Test.cpp。 Test.h包含方法print（）的原型。 print（）只是打印一行到控制台。使用premake，我将静态库链接到Main项目，并且在main.cpp中包含了Test.h文件。我的问题是这样：在VS2010我得到这个错误时，我试图构建：

This project is extremely simple, and is solely for the purpose of learning premake. In the static library project, named Test, I have 2 files, Test.h and Test.cpp. Test.h contains the prototype for the method print(). print() simply prints a line to the console. Using premake, I linked the static library to the Main project, and in main.cpp I have included the Test.h file. My problem is this: in VS2010 I get this error when I attempt to build:

1>main.obj : error LNK2019: unresolved external symbol "void __cdecl print(void)" (? print@@YAXXZ) referenced in function _main  
1>.\Main.exe : fatal error LNK1120: 1 unresolved externals

这是我的代码在4个文件，preake4.lua：

Here is my code in the 4 files, the premake4.lua:

solution "HelloWorld"
    configurations {"Debug", "Release"}
project "Main"
    kind "ConsoleApp"
    language "C++"
    files{
        "main.cpp"

    }
    configuration "Debug"
        defines { "DEBUG" }
        flags { "Symbols" }

    configuration "Release"
        defines { "NDEBUG" }
        flags { "Optimize" } 
    links {"Test"}
project "Test"
    kind "StaticLib"
    language "C++"
    files{
        "test.h",
        "test.cpp"

    }

Test.cpp：

#include <iostream>

void print(){
    std::cout << "HELLO" << std::endl;
}

Test.h：

void print();

Main.cpp：

#include <conio.h>
#include "test.h"
int main(){
    print();
    getch();
    return 0;
}   

如果你想知道为什么有一个getch控制台立即关闭一旦它到达返回0，所以我使用getch（）来解决这个问题，这迫使窗口等待，直到用户按下另一个键。任何关于这个问题的建议将是美好的，因为我只是不知道什么问题是。如果它是简单的，请不要阉割我，我对预制和静态库非常少的经验，这就是为什么我想学习他们。

If you are wondering why there is a getch() there, on my computer the console immediately closes once it reaches return 0, so I use getch() to combat that issue, which forces the window to wait until the user has pressed another key. Any advice on this issue would be wonderful, because I simply am not sure what the problem is. If it is something simple please dont castrate me on it, I have very little experience with premake and static libraries, which is why I am trying to learn them.

推荐答案

links {"Test"}

Lua不是Python。空格与Lua无关，就像空格对C ++无关紧要。因此，您的链接语句仅适用于发布配置。如果你想把它应用到项目作为一个整体，它需要在配置语句之前，就像你的 kind ， files 和其他命令。

Lua is not Python. Whitespace is irrelevant to Lua, just like whitespace doesn't matter to C++. So your links statement only applies to the "Release" configuration. If you want it to apply to the project as a whole, it needs to go before the configuration statement, just like your kind, files, and other commands.

Premake4以这种方式工作，只用于Release构建（或Debug或其他）。实际上，您可以在配置下放置几乎任何 项目因此，您可以具有仅在调试版本中使用的特定文件，或任何其他文件。

Premake4 works this way so that you could have certain libraries that are only used in a "Release" build (or Debug or whatever). Indeed, you can put almost any project command under a configuration. So you can have specific files that are used only in a debug build, or whatever.

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