https://forge.codesys.com/forge/talk/CODESYS-V2/thread/7c4d1468b0/2020-02-27T20:30:50.028000ZRecent posts to Visual C++ configuration for external library compilation2020-02-27T20:30:50.028000Z2020-02-27T20:30:50.028000ZDaniel Moreirahttps://forge.codesys.com/u/daniel-moreira/https://forge.codesys.com75a44b9cf7711381103e8ffbebcc5653aab67f5a

<div class="markdown_content"><p>Maybe you have solved this problem, but may I help you...</p> <p>Well, I´ve been trying do the same thing. </p> <p>Your code in .c has a problem. The return type function was declared as 'int'. This type has 32 bits in the visual c++ and this type in CodeSys may have less bits than 32.</p> <p>I guess you need to make one specific '#define' to solve it.</p> <p>For example:</p> <p>#define INT short </p> <p>So, you can use 'INT' and not 'int' to build your obj file...</p></div>

2020-02-27T20:30:48.658000Z2020-02-27T20:30:48.658000ZMOUNIER Laurenthttps://forge.codesys.com/u/mounier-laurent/https://forge.codesys.comc4818d563b4fbab3b073497d09466faad4778b4c

<div class="markdown_content"><p>Hi,</p> <p>I am trying to create an external C library with Visual C++ 2005 Express. To test the process I am using the following code:</p> <p><span style="color: blue;">/<em> Enum definitions </em>/</span></p> <p>/<em> The Prototypes </em>/<br/> int LIB_FUN1(void);</p> <p><span style="color: blue;">#include "D:\temp\codesys\TEST_LIB2.h"</span></p> <p>/<em> The implemenation templates </em>/<br/> int LIB_FUN1(void)<br/> {<br/> return 2;<br/> }</p> <p>I have done configuration of Visual C++ as explained in the document "C_IN_32Bit_E.doc". I had no error during compilation.</p> <p>I have copied the file TEST_LIB2.obj in the directory of TEST_LIB2.lib, and I have added the library to my Codesys project.</p> <p>The target of my project is "3S CoDeSys SP PLCWinNT V2.4".</p> <p>When I tried to compile in Codesys, I had the warning 1902 and was unable to upload my project in PLCWinNT.</p> <p>I think the problem is in configuration of Visual C++ project because the function LIB_FUN1 is very simple. </p> <p>Does somebody have any information about such a warning? Is there a more precise explanation about configuration of visual C++ options?</p> <p>Thank you</p> <p>Regards</p> <p>Laurent</p></div>