头文件在dev-C ++中 [英] Header files in dev-C++

问题描述

我试图向dev-C ++添加一个头文件，但是当我编译它时，它不起作用。
这里是我的确切步骤（对于我的例子，我试图让mysql.h工作）：

1. copy mysql.h放入c：\ dev-c ++ \ include


2. 检查在dev-C ++工具>编译器选项>目录> c includes和c ++ include包含 c：\dev-c ++ \includes


3. 在我的文件顶部包含#include


4. 已编译
$ b $这是dev-C ++编译器告诉我的：



  13 C：\ Documents and Settings \Steve\Desktop\server code\setup1\main.c`mysql'未声明（首次在此函数中使用）
  

以及由于未找到头文件而导致的其他错误





概述正确吗？或者还有什么我需要做的，以获得头文件编译。





我尝试了VS2008（在vs2008 include文件夹等中放入mysql.h）
，但仍然有相同的错误。如果可能的话，我想坚持使用Dev-c ++。

解决方案

Dev-C ++是GCC的一个端口，所以试试这个页面： http://gcc.gnu.org/onlinedocs/cpp /Search-Path.html 。

请注意，您可能不得不使用Makefile。

I'm trying to add an header file to dev-C++ but when I compile it it doesn't work. Here are my exact steps (for my example, I'm trying to get mysql.h to work):

1. copy "mysql.h" into c:\dev-c++\includes
2. check that in dev-C++ tools > compiler options > directories > c includes and c++ includes have the path to "c:\dev-c++\includes"
3. include #include at the top of my file
4. compiled

This is what the dev-C++ compiler told me:

13 C:\Documents and Settings\Steve\Desktop\server code\setup1\main.c `mysql' undeclared (first use in this function) 

As well as other errors due to not locating the header file

Are the steps I've outlined correct? Or is there something else I need to do to get the header files to compile.

P.S. I tried doing the same with VS2008 (put mysql.h in the vs2008 include folder, etc) but still have the same error. I would like to stick with Dev-c++ if possible.

解决方案

Dev-C++ is a port of GCC, so try this page: http://gcc.gnu.org/onlinedocs/cpp/Search-Path.html.

Note that you probably have to tinkle with the Makefile.

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