BorlandTalk.com Borland discussion newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  precompiled header problem in BDS2006, any solution?          BorlandTalk.com Forum Index -> C++ Builder (Non-Technical) View previous topic :: View next topic   Author Message Peter Sprenger Guest Posted: Wed May 09, 2007 8:10 am    Post subject: precompiled header problem in BDS2006, any solution? I switched from BCB6 to BDS2006 and have again the problem, that I cannot use precompiled headers, when math.h or a header file that has "initialized data in header" is included before pragma hdrstop. Has anybody found a convenient way to get around this? I think CG will not change anything in the upcoming BDS2007. Regards, Peter Back to top Leo Siefert Guest Posted: Wed May 09, 2007 5:00 pm    Post subject: Re: precompiled header problem in BDS2006, any solution? Peter Sprenger wrote: Quote: Has anybody found a convenient way to get around this? Well, the obvious answer would be to put math.h after the hdrstop pragma. The compile time for math.h is a drop in the bucket compared to the VCL and Windows headers you are probably including in your BCB projects. Quote: I think CG will not change anything in the upcoming BDS2007. If they don't then I don't expect anyone will upgrade. - Leo Back to top Peter Sprenger Guest Posted: Wed May 09, 2007 6:55 pm    Post subject: Re: precompiled header problem in BDS2006, any solution? Quote: Has anybody found a convenient way to get around this? Well, the obvious answer would be to put math.h after the hdrstop pragma. The compile time for math.h is a drop in the bucket compared to the VCL and Windows headers you are probably including in your BCB projects. As obvious as it gets, math.h is included in many ways from other header files. Of course I can try to detect the lines that offend the precompilation, put it in my "math2.h" and include this file after pragma hdrstop. After 1 hour wasted for this, I can still try to find a solution for the other "offending" header files. This is NOT convenient, and has possibly to be redone for BDS2007. Quote: I think CG will not change anything in the upcoming BDS2007. If they don't then I don't expect anyone will upgrade. What a shame. Back to top David Dean [CodeGear] Guest Posted: Wed May 09, 2007 10:50 pm    Post subject: Re: precompiled header problem in BDS2006, any solution? In article <f1rrp1$t5l$1 (AT) bolzen (DOT) all.de>, Peter Sprenger <info (AT) gudeads (DOT) com> wrote: Quote: Has anybody found a convenient way to get around this? I think CG will not change anything in the upcoming BDS2007. This is something I am very interested in. All the test cases I have seen so far boil down to including math.hpp, so If you don't include this file, but still see the warning, I'd like to see the test case. -- -David Dean CodeGear C++ QA Engineer <http://blogs.codegear.com/ddean/> Back to top Duane Hebert Guest Posted: Thu May 10, 2007 12:12 am    Post subject: Re: precompiled header problem in BDS2006, any solution? "David Dean [CodeGear]" <david.dean.no (AT) spam (DOT) codegear.com> wrote in message news:david.dean.no-2B3868.10504309052007 (AT) killface (DOT) local... Quote: In article <f1rrp1$t5l$1 (AT) bolzen (DOT) all.de>, Peter Sprenger <info (AT) gudeads (DOT) com> wrote: Has anybody found a convenient way to get around this? I think CG will not change anything in the upcoming BDS2007. This is something I am very interested in. All the test cases I have seen so far boil down to including math.hpp, so If you don't include this file, but still see the warning, I'd like to see the test case. I think that if you have default variables assigned to functions in header files you'll get the same problem. This may have been intermittent IIRC and it also showed up as a complaint about dialogs.hpp is some cases. But basically something like: class doh { void spoo(int x = 42); }; would cause problems. We would basically watch the compiler until it generated this message and then try to figure out what it was compiling at the time. I have BDS explorer at home. If I have a chance, I'll try to generate a test case. Back to top David Dean [CodeGear] Guest Posted: Thu May 10, 2007 5:49 am    Post subject: Re: precompiled header problem in BDS2006, any solution? In article <46421d09$1 (AT) newsgroups (DOT) borland.com>, "Duane Hebert" <spoo (AT) flarn (DOT) com> wrote: Quote: I think that if you have default variables assigned to functions in header files you'll get the same problem. I'm sorry if I wasn't specific enough. I'm looking for examples of this that occur in headers that we provide. The compiler is going to bail on generating PCH if it catches actual initialized data. (IOW, don't do this on purpose) -- -David Dean CodeGear C++ QA Engineer <http://blogs.codegear.com/ddean/> Back to top Duane Hebert Guest Posted: Thu May 10, 2007 6:03 am    Post subject: Re: precompiled header problem in BDS2006, any solution? "David Dean [CodeGear]" <david.dean.no (AT) spam (DOT) codegear.com> wrote in message news:david.dean.no-018BF3.17492009052007 (AT) killface (DOT) local... Quote: In article <46421d09$1 (AT) newsgroups (DOT) borland.com>, "Duane Hebert" <spoo (AT) flarn (DOT) com> wrote: I think that if you have default variables assigned to functions in header files you'll get the same problem. I'm sorry if I wasn't specific enough. I'm looking for examples of this that occur in headers that we provide. The compiler is going to bail on generating PCH if it catches actual initialized data. (IOW, don't do this on purpose) Ok. Then it's intentional that you can't pre-compiled code with default args? In that case, the only ones that I know of have to do with math.hpp. Back to top David Dean [CodeGear] Guest Posted: Thu May 10, 2007 8:11 am    Post subject: Re: precompiled header problem in BDS2006, any solution? In article <46426f56$1 (AT) newsgroups (DOT) borland.com>, "Duane Hebert" <spoo (AT) flarn2 (DOT) com> wrote: Quote: Ok. Then it's intentional that you can't pre-compiled code with default args? There is a feature request in to handle it, in the meantime, I want to try to see what else we can do. -- -David Dean CodeGear C++ QA Engineer <http://blogs.codegear.com/ddean/> Back to top David Perkins Guest Posted: Thu May 10, 2007 2:19 pm    Post subject: Re: precompiled header problem in BDS2006, any solution? Quote: Ok. Then it's intentional that you can't pre-compiled code with default args? You sure that's right? I use PCH on all my projects and the only time I get a problem is when a third-party component includes math.hpp or dialog.hpp. My use of default args doesn't break the PCH. Back to top Darko Miletic Guest Posted: Thu May 10, 2007 6:22 pm    Post subject: Re: precompiled header problem in BDS2006, any solution? David Perkins <please@no-spam.com> wrote: Quote: Ok. Then it's intentional that you can't pre-compiled code with default args? You sure that's right? I use PCH on all my projects and the only time I get a problem is when a third-party component includes math.hpp or dialog.hpp. My use of default args doesn't break the PCH. You are right. I tried reproducing this error with custom header. Any common class with wethods that have default value pass ok. What generates problem is placing variable in header and assigning it some value like this: int test = 123; //fails for pch const int test2 = 123; //everything is fine Here is the header: #ifndef STHDR #define STHDR int test = 123; const int test2 = 123; struct ttt { void SomeMethod (int p = 0) {} void SomeOtherMethod (const int p = 0) {} }; void stest (int d, const char* = 0); #endif /*STHDR*/ Back to top Bob Gonder Guest Posted: Thu May 10, 2007 7:50 pm    Post subject: Re: precompiled header problem in BDS2006, any solution? Darko Miletic wrote: Quote: You are right. I tried reproducing this error with custom header. Any common class with wethods that have default value pass ok. What about inline functions? Math.h has many inline functions. I would think if out-of-line inline functions is enabled, that the header would emit. (Or if the compiler otherwise decided to out-of-line the functions.) Back to top Duane Hebert Guest Posted: Thu May 10, 2007 8:02 pm    Post subject: Re: precompiled header problem in BDS2006, any solution? Quote: You are right. I tried reproducing this error with custom header. Any common class with wethods that have default value pass ok. Unfortunately it's not consistent. What we've seen is that we'll start getting warnings that precompiling has stopped due to code in header of dialogs.hpp. This will be where no dialogs.hpp is used. We would watch the compilation until the error popped up, diagnose the includes and move them after the pragma hdrstop until the error went away. Very time consuming. Eventually and in every case we found that the culprit was a class that have a function with a default value. As I said before, I could never create a test project to duplicate this but I have seen other people post similar complaints. I have the impression that David Dean knows something about it since he said it was a request to change this. At any rate, what we ended up doing is to just precompile vcl.h. Reduced efficiency but works to some extent. Quote: What generates problem is placing variable in header and assigning it some value like this: int test = 123; //fails for pch const int test2 = 123; //everything is fine Here is the header: #ifndef STHDR #define STHDR int test = 123; const int test2 = 123; struct ttt { void SomeMethod (int p = 0) {} void SomeOtherMethod (const int p = 0) {} }; void stest (int d, const char* = 0); #endif /*STHDR*/ Back to top Leroy Casterline Guest Posted: Sun May 13, 2007 1:59 am    Post subject: Re: precompiled header problem in BDS2006, any solution? On Thu, 10 May 2007 10:19:21 +0100, David Perkins <please@no-spam.com> wrote: Quote: Ok. Then it's intentional that you can't pre-compiled code with default args? You sure that's right? I use PCH on all my projects and the only time I get a problem is when a third-party component includes math.hpp or dialog.hpp. My use of default args doesn't break the PCH. It depends on the data type. Integers are OK, doubles and AnsiStrings are not. 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 (Non-Technical) 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.