I tried compiling a C program compiled by Gambit C.<br>My compiler is Visual C++ 2010 Express Edition.<br>I&#39;m getting this error: &quot;unresolved external symbol ____G__20_h&quot;. <br>I included the steps I did to create the VC++ project below. <br>
Please point out any mistakes.<br>Thanks.<br>-Fiel<br><br>Compiler error messages:<br>1&gt;------ Rebuild All started: Project: h, Configuration: Debug Win32 ------<br>1&gt;  Performing Custom Build Tools<br>1&gt;  stdafx.cpp<br>
1&gt;  h.c<br>1&gt;d:\user directories\user\documents\visual studio 2010\projects\h\h\h.c(103): warning C4102: &#39;___L3__20_h&#39; : unreferenced label<br>1&gt;d:\user directories\user\documents\visual studio 2010\projects\h\h\h.c(100): warning C4102: &#39;___L2__20_h&#39; : unreferenced label<br>
1&gt;d:\user directories\user\documents\visual studio 2010\projects\h\h\h.c(98): warning C4102: &#39;___L1__20_h&#39; : unreferenced label<br>1&gt;d:\user directories\user\documents\visual studio 2010\projects\h\h\h.c(92): warning C4102: &#39;___L__20_h&#39; : unreferenced label<br>
1&gt;d:\user directories\user\documents\visual studio 2010\projects\h\h\h.c(89): warning C4102: &#39;___L0__20_h&#39; : unreferenced label<br>1&gt;d:\user directories\user\documents\visual studio 2010\projects\h\h\h.c(80): warning C4101: &#39;___s64_temp&#39; : unreferenced local variable<br>
1&gt;d:\user directories\user\documents\visual studio 2010\projects\h\h\h.c(80): warning C4101: &#39;___s32_temp&#39; : unreferenced local variable<br>1&gt;d:\user directories\user\documents\visual studio 2010\projects\h\h\h.c(80): warning C4101: &#39;___u64_temp&#39; : unreferenced local variable<br>
1&gt;d:\user directories\user\documents\visual studio 2010\projects\h\h\h.c(80): warning C4101: &#39;___u32_temp&#39; : unreferenced local variable<br>1&gt;  gambit.c<br>1&gt;  Generating Code...<br><span style="background-color: rgb(255, 255, 102);">1&gt;h.obj : error LNK2001: unresolved external symbol ____G__20_h</span><br>
1&gt;d:\user directories\user\Documents\Visual Studio 2010\Projects\h\Debug\h.exe : fatal error LNK1120: 1 unresolved externals<br>========== Rebuild All: 0 succeeded, 1 failed, 0 skipped ==========<br><br>Here are the steps I took to create the Visual C++ project:<br>
<br>1. Project-wide settings (project type is unmanaged win32 console application):<ul><li>Added &quot;C:\Program Files (x86)\Gambit-C\v4.6.0\lib&quot; and &quot;C:\Program Files (x86)\Gambit-C\v4.6.0\include&quot; to additional include directories. &quot;include&quot; is needed for including &quot;_gambc.c&quot; in gambit.c below.<br>
</li><li>Added &quot;C:\Program Files (x86)\Gambit-C\v4.6.0\lib&quot; to additional library directories.</li><li>Added &quot;___APPLICATION&quot; to C preprocessor definitions. This causes main() to be defined.<br></li><li>
Added &quot;ws2_32.lib&quot; and &quot;libgambc.lib&quot; to additional libraries.<br></li></ul>2. Added file &quot;h.scm&quot; to project. Added custom build tool to compile &quot;h.scm&quot; to &quot;h.c&quot;. Custom build tool command line for h.scm: 
&quot;c:\Program Files (x86)\Gambit-C\v4.6.0\bin\gsc.exe&quot; -c &quot;%(FullPath)&quot;.<br>3. Added file &quot;h.c&quot; to project. Set it to be compiled as C code. Turned off usage of precompiled headers. <br>4. Added file &quot;gambit.c&quot; to project. Set it to be compiled as C code. Turned off usage of precompiled headers.<br>
5. Contents of h.scm:<br>
(display &quot;hello&quot;) (newline)<br>
-----<br>6. Contents of &quot;gambit.c&quot;:<br>
#include &quot;_gambc.c&quot;<br>
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