BorlandTalk.com Borland discussion newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  Problems with simple Apache module dll          BorlandTalk.com Forum Index -> C++ Builder (Internet Web) View previous topic :: View next topic   Author Message Matt Lowe Guest Posted: Fri May 19, 2006 4:14 pm    Post subject: Problems with simple Apache module dll I'm trying to build a simple test module for Apache 2.2 -- just a plain old dll, no WebBroker or WebSnap or any of that. When I try to load the module, I get the following error: "Can't Locate API module structure 'hello_module' in file C:/Apache/modules/HelloModule.dll" So far as I can tell, everything is set up correctly to export hello_module. (When I build the dll, Depends shows that the symbol "_hello_module" is being exported.) So is there a problem with this symbol name? Or is there something else I'm missing? The code for the module looks like this: --Unit1.cpp-- #include <windows.h> #include "httpd.h" #include "http_config.h" #include "http_log.h" #pragma argsused int WINAPI DllEntryPoint(HINSTANCE hinst, unsigned long reason, void* lpReserved) { return 1; } extern "C" { static int hello_handler(request_rec* r) { ap_log_error(APLOG_MARK,APLOG_ERR,OK,NULL,"Testing hello handler"); return OK; } static void hello_hooks(apr_pool_t* pool) { ap_hook_handler(hello_handler, NULL, NULL, APR_HOOK_MIDDLE); } module AP_MODULE_DECLARE_DATA hello_module = { STANDARD20_MODULE_STUFF, NULL, NULL, NULL, NULL, NULL, hello_hooks }; } -- And the interesting part of my httpd.conf looks like this: LoadModule hello_module modules/HelloModule.dll <Location /helloc> SetHandler hello-handler </Location> -- Matt Lowe Milsoft Utility Solutions Back to top Matt Lowe Guest Posted: Fri May 19, 2006 5:14 pm    Post subject: Re: Problems with simple Apache module dll Ok, I worked around the problem by changing my httpd.conf: LoadModule _hello_module modules/HelloModule.dll But is there a way to get builder to stop decorating the symbol name with the underscore? Matt "Matt Lowe" <dontspammatt (AT) milsoft (DOT) com> wrote in message news:446de17a$1 (AT) newsgroups (DOT) borland.com... Quote: I'm trying to build a simple test module for Apache 2.2 -- just a plain old dll, no WebBroker or WebSnap or any of that. Back to top Michel Leunen Guest Posted: Fri May 19, 2006 7:14 pm    Post subject: Re: Problems with simple Apache module dll Matt Lowe wrote: Quote: But is there a way to get builder to stop decorating the symbol name with the underscore? Yes, use the __stdcall calling convention for your exported function. By default the __cdecl convention is used. Michel -- ---------------------------------------- Michel Leunen mailto: see my homepage. C++Builder, BCC5.5.1 Web site: http://www.leunen.com/ ---------------------------------------- Back to top Matt Lowe Guest Posted: Tue May 23, 2006 6:14 pm    Post subject: Re: Problems with simple Apache module dll Quote: But is there a way to get builder to stop decorating the symbol name with the underscore? Yes, use the __stdcall calling convention for your exported function. By default the __cdecl convention is used. hello_module isn't a function, it's a struct. Anyhow, I tried setting __stdcall, but it doesn't seem to work: module __stdcall __declspec(dllexport) hello_module = { STANDARD20_MODULE_STUFF, NULL, NULL, NULL, NULL, NULL, hello_hooks }; Setting stdcall in project options doesn't work either. Might there be a conflict with __declspec? Thanks, Matt Back to top Michel Leunen Guest Posted: Tue May 23, 2006 7:14 pm    Post subject: Re: Problems with simple Apache module dll Matt Lowe wrote: Quote: hello_module isn't a function, it's a struct. Hopefully someone with a better knowledge of this issue will answer you. What I know is that exporting classes and therefore struct is compiler specific. That means that your dll with exported classes will not work when used with an application build with a different compiler. Michel -- ---------------------------------------- Michel Leunen mailto: see my homepage. 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