BorlandTalk.com Borland discussion newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  Use a C++ library within Delphi          BorlandTalk.com Forum Index -> C++ Builder (Command Line Tools) View previous topic :: View next topic   Author Message Alan Garny Guest Posted: Wed Dec 20, 2006 9:10 am    Post subject: Use a C++ library within Delphi Below is a message I posted on b.p.d.non-technical, but there is a technical bit that might benefit from being posted on this newsgroup, so... Cheers, Alan. ------------------- I can't seem to find an appropriate newsgroup for the problem a colleague of mine and I are facing, so here goes... My colleague has developed a library in C++, which I would like to use within my Delphi application. Because he doesn't use, and doesn't intend to use, any of Borland tools, he thought he would make me a favour and compile his C++ library using the free command line tools (version 5.5 of the C++ compiler). After a bit of struggle, he eventually got his library to compile (kudos to him!), but now I am the one facing problems. I thought I would start by compiling a small C++ console program that he wrote. Having BDS 2006, I have version 5.82 of the C++ compiler and that's where the problem is: I get unresolved symbols. It would seem that the latest version of the C++ compiler uses the "Dinkumware" implementation of the C++ STL, causing an incompatibility between the free C++ compiler (5.5) and the one available within BDS 2006 (5.82). A possible way to solve this problem would be to use the cw32mt.lib file from the free C++ compiler. This version of the library would then provide the symbols needed for BDS 2006's C++ compiler. However, before we can do that, we need to make sure that cw32mt.lib is a "redistributable file" under the free C++ compiler license agreement. The question, therefore, is to know whether or not cw32mt.lib is a redistributable file and, if not, what can we do to get the library to be compatible with BDS 2006's C++ compiler? Cheers, Alan. PS: at some point, I thought I could get my colleague to try compile his library using the Turbo C++ Explorer compiler, but we don't seem to be able to download it (not to mention that the CodeGear website refers to Turbo C Explorer as opposed to Turbo C++ Explorer). Have the Turbo Explorer versions been removed (one can still get an activation key though)? Back to top vavan Guest Posted: Wed Dec 20, 2006 9:10 am    Post subject: Re: Use a C++ library within Delphi On Wed, 20 Dec 2006 04:05:00 -0000, "Alan Garny" <someone (AT) somewhere (DOT) com> wrote: Quote: Below is a message I posted on b.p.d.non-technical, but there is a technical please see my reply in b.p.d.n-t -- Vladimir Ulchenko aka vavan Back to top Ed Mulroy Guest Posted: Wed Dec 20, 2006 9:10 am    Post subject: Re: Use a C++ library within Delphi To do that make functions either __fastcall or __stdapi. If __stdcall then make sure that their declarations in Delphi also say stdcall. Use an obj file and not a lib. Also use no compiler-supplied libraries, do not throw exceptions and do not use try and catch. It is easier if you just make a DLL and let Delphi call functions that it exports. .. Ed Quote: Alan Garny wrote in message news:4588b62c$1 (AT) newsgroups (DOT) borland.com... Below is a message I posted on b.p.d.non-technical, but there is a technical bit that might benefit from being posted on this newsgroup, so... ------------------- I can't seem to find an appropriate newsgroup for the problem a colleague of mine and I are facing, so here goes... My colleague has developed a library in C++, which I would like to use within my Delphi application. Because he doesn't use, and doesn't intend to use, any of Borland tools, he thought he would make me a favour and compile his C++ library using the free command line tools (version 5.5 of the C++ compiler). After a bit of struggle, he eventually got his library to compile (kudos to him!), but now I am the one facing problems. I thought I would start by compiling a small C++ console program that he wrote. Having BDS 2006, I have version 5.82 of the C++ compiler and that's where the problem is: I get unresolved symbols. It would seem that the latest version of the C++ compiler uses the "Dinkumware" implementation of the C++ STL, causing an incompatibility between the free C++ compiler (5.5) and the one available within BDS 2006 (5.82). A possible way to solve this problem would be to use the cw32mt.lib file from the free C++ compiler. This version of the library would then provide the symbols needed for BDS 2006's C++ compiler. However, before we can do that, we need to make sure that cw32mt.lib is a "redistributable file" under the free C++ compiler license agreement. The question, therefore, is to know whether or not cw32mt.lib is a redistributable file and, if not, what can we do to get the library to be compatible with BDS 2006's C++ compiler? Cheers, Alan. PS: at some point, I thought I could get my colleague to try compile his library using the Turbo C++ Explorer compiler, but we don't seem to be able to download it (not to mention that the CodeGear website refers to Turbo C Explorer as opposed to Turbo C++ Explorer). Have the Turbo Explorer versions been removed (one can still get an activation key though)? Back to top Alan Garny Guest Posted: Thu Dec 21, 2006 12:44 am    Post subject: Re: Use a C++ library within Delphi "Ed Mulroy" <dont_email_me (AT) bitbuc (DOT) ket> wrote in message news:4588ccaf$1 (AT) newsgroups (DOT) borland.com... Quote: To do that make functions either __fastcall or __stdapi. If __stdcall then make sure that their declarations in Delphi also say stdcall. Use an obj file and not a lib. Also use no compiler-supplied libraries, do not throw exceptions and do not use try and catch. Thanks a lot, that is useful information! This is not my C++ library, but I will definitely forward that information to my colleague. Quote: It is easier if you just make a DLL and let Delphi call functions that it exports. If at all possible, I would very much like to avoid having to use a DLL. Cheers, Alan. Back to top Display posts from previous: All Posts1 Day7 Days2 Weeks1 Month3 Months6 Months1 Year Oldest FirstNewest First         BorlandTalk.com Forum Index -> C++ Builder (Command Line Tools) All times are GMT Page 1 of 1   Jump to: Select a forum C++ Builder Newsgroups----------------C++ BuilderC++ Builder (ActiveX)C++ Builder (Announcements)C++ Builder (Command Line Tools)C++ Builder DatabasesC++ Builder Databases (ADO)C++ Builder Databases (Desktop)C++ Builder Databases (InterBase Express)C++ Builder Databases (Multi-Tier)C++ Builder Databases (SQL Servers)C++ Builder (Graphics)C++ Builder (IDE)C++ Builder (Internet)C++ Builder (Internet Socket)C++ Builder (Internet Web)C++ Builder (Jobs)C++ Builder (Language)C++ Builder (Language C++)C++ Builder (Compatibility with MFC)C++ Builder (Native API)C++ Builder (Non-Technical)C++ Builder (Students)C++ Builder (Third Party Tools)C++ Builder (Upgrade)C++ Builder (VCL)C++ Builder (VCL Components Usage)C++ Builder (VCL Components Development)C++ Builder (VCL Usage)C++ Builder (WinAPI)C++ Builder Installation Delphi Newsgroups----------------Delphi (General)Delphi ActiveX Controls UsageDelphi ActiveX Controls DevelopmentDelphi As400Delphi DatabasesDelphi Databases (ADO)Delphi Databases (dbExpress)Delphi Databases (Desktop)Delphi Databases (InterBase Express)Delphi Databases (Multi-Tier)Delphi Databases (SQL Servers)Delphi DeploymentDelphi GraphicsDelphi IDEDelphi InternationalizationDelphi InternetDelphi Internet Isapi-WebBrokerDelphi Internet WebSnapDelphi Internet WinsockDelphi JobsDelphi Language BASMDelphi Language ObjectPascalDelphi Model Driven Architecture (General)Delphi Model Driven Architecture (Third Party)Delphi MultimediaDelphi Native APIDelphi Non-TechnicalDelphi ObjectPascalDelphi OLE AutomationDelphi OO designDelphi OpenToolsAPIDelphi Reporting-ChartingDelphi RTLDelphi StudentsDelphi TeamSourceDelphi Thirdparty ToolsDelphi Thirdparty Tools (General)Delphi Thirdparty Tools (IntraWeb)Delphi Thirdparty Tools (RaveReports)Delphi UpgradeDelphi VCLDelphi VCL ComponentsDelphi VCL Components UsingDelphi VCL Components WritingDelphi WebServices SOAPDelphi WinAPIDelphi XMLDelphi Installationcomp.lang.pascal.delphi.components.misccomp.lang.pascal.delphi.components.usagecomp.lang.pascal.delphi.components.writingcomp.lang.pascal.delphi.databasescomp.lang.pascal.delphi.misccomp.sources.delphi JBuilder Newsgroups----------------JBuilderJBuilder AnnouncementsJBuilder Applet IssuesJBuilder As400JBuilder CompilerJBuilder CORBA/RMIJBuilder DatabasesJBuilder DB SwingJBuilder DebuggerJBuilder DeploymentJBuilder DocumentationJBuilder EnterpriseJBuilder HandheldJBuilder IDEJBuilder JavaJBuilder JavaAPIJBuilder Java LanguageJBuilder Java SwingJBuilder Java BeansJBuilder Java Beans UsageJBuilder Java Beans DevelopmentJBuilder JBCLJBuilder JDataStoreJBuilder JobsJBuilder LinuxJBuilder MacintoshJBuilder & MobileSetJBuilder MultiLingual AppsJBuilder Non-TechnicalJBuilder OpenToolsJBuilder Servlets (JSP)JBuilder StudentsJBuilder Team DevelopmentJBuilder Thirdparty ToolsJBuilder UpgradeJBuilder Installation InterBase Newsgroups----------------InterBaseInterBase Bug DiscussionInterBase GeneralInterBase IBConsoleInterBase OpenSourceInterBase ReplicationInterBase SQLInterBase ThirdpartyInterBase Installation Miscellaneous Borland Newsgroups----------------AppCenterAppServerEnteraVisiBroker  You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum Powered by phpBB © 2001, 2006 phpBB Group SEO toolkit © 2004-2006 webmedic.