Re: [Lazarus] Using a component OBJ file in Lazarus?
Michael Schnell via Lazarus schrieb am Di., 12. Juni 2018, 15:25: > On 12.06.2018 14:06, Sven Barth via Lazarus wrote: > > The dongle code would also be linked if it would be in a dynamic > > package and Lazarus would support them. > Sorry, I seem not to be have been clear. > > The (potential) problem I want to provide a solution for is: not to link > the Dongle code in the Lazarus IDE executable. (But have it usable in > the compiled user application.) > (Delphi does this by using the dynamic linking for the package the > Delphi IDE uses, but this is of no concern when doing Lazarus.) > No. Delphi does *not* solve this by using dynamic linking. If a package is installed in the IDE (no matter whether it is Delphi or Lazarus) its code becomes part of the running process (for Delphi when the package is loaded at IDE start, for Lazarus during compilation and linking). The execution of the dongle code is only prevented if the developer of the component checked whether the design mode is active and does not execute the dongle code in that case (or the component is not used, because a project is loaded that does not use the component). Regards, Sven -- ___ Lazarus mailing list Lazarus@lists.lazarus-ide.org https://lists.lazarus-ide.org/listinfo/lazarus
Re: [Lazarus] Using a component OBJ file in Lazarus?
On 12.06.2018 14:06, Sven Barth via Lazarus wrote: The dongle code would also be linked if it would be in a dynamic package and Lazarus would support them. Sorry, I seem not to be have been clear. The (potential) problem I want to provide a solution for is: not to link the Dongle code in the Lazarus IDE executable. (But have it usable in the compiled user application.) (Delphi does this by using the dynamic linking for the package the Delphi IDE uses, but this is of no concern when doing Lazarus.) That is why I suggest to avoid the Dongle code in the package altogether, and have it only dynamically linked late (on request, which only is supposed top occur with the user application). -Michael -- ___ Lazarus mailing list Lazarus@lists.lazarus-ide.org https://lists.lazarus-ide.org/listinfo/lazarus
Re: [Lazarus] Using a component OBJ file in Lazarus?
Michael Schnell via Lazarus schrieb am Di., 12. Juni 2018, 11:48: > Hence the dongle code will be linked in with the IDE and might (or might > not) provide problems. > The dongle code would also be linked if it would be in a dynamic package and Lazarus would support them. The important point is what a component does while in design mode (e.g. the OpenGL component does not initialize a OpenGL context in design mode). As long as the component does not use the dongle code while in design mode then nothing happens no matter whether it is linked dynamically or statically. Regards, Sven > -- ___ Lazarus mailing list Lazarus@lists.lazarus-ide.org https://lists.lazarus-ide.org/listinfo/lazarus
Re: [Lazarus] Using a component OBJ file in Lazarus?
On 12.06.2018 11:30, Sven Barth via Lazarus wrote: Only because the code is part of a package that's loaded by the Delphi IDE does not mean that it also is one in the final Delphi program. Delphi package distributions more often than not also contain the DCU for static linking. Of course you are correct that in Delphi a package can be linked dynamically to the IDE (it can't be linked statically, as the IDE never is recompiled), but statically in the final executable. But Lazarus does not provide dynamic linking to the IDE in such a way. That is why the IDE needs to be recompiled when adding a package with "design time stuff". (IMHO this is not harmful at all.) Am I wrong supposing that this means that the package will be statically linked to both the IDE and the executable, and hence it content will be linked in with both ? AFAIU, there are means to control how the code is executed at runtime and how at design time, but this does not affect linking. Hence the dongle code will be linked in with the IDE and might (or might not) provide problems. -Michael -- ___ Lazarus mailing list Lazarus@lists.lazarus-ide.org https://lists.lazarus-ide.org/listinfo/lazarus
Re: [Lazarus] Using a component OBJ file in Lazarus?
Michael Schnell via Lazarus schrieb am Di., 12. Juni 2018, 10:37: > > On 11.06.2018 21:03, Bo Berglund via Lazarus wrote: > > On Mon, 11 Jun 2018 10:23:44 +0200, Michael Schnell via Lazarus < > lazarus@lists.lazarus-ide.org> wrote: > > > > > > You want to compile some 3rd party Dongle code in the IDE ? > > > > That is more than weired ! > > > > Sorry, I don't really know what you mean here... > > What is the reason for this comment? > > Unlike Delphi it seems like when one wants to add components to the > > development IDE palette in Lazarus one has actually to *rebuild* the > > IDE, there seems to be no otehr way... > > > > As fpc/Lazarus dos not (yet) provide run time packages, and IMHO it will > ask for major problems when compiling the Lazarus IDE to contain the > Dongle code, I suppose your best option is to replace the Dongle .OBJ > file by a small pascal function and use this to build your package to > allow it for compiling the IDE (providing the design time stuff) and the > user program (providing the run time stuff). > > Now you need to "fake" the runtime package behavior by doing the said > small pascal function in a way that it dynamically (not in the startup > code !) loads and then uses a dll . > > The dll would be done in a way that it just forwards the call to the > functions provided by Dongle .OBJ to same, and statically links to it. > Would you please stop spreading nonsense? Only because the code is part of a package that's loaded by the Delphi IDE does not mean that it also is one in the final Delphi program. Delphi package distributions more often than not also contain the DCU for static linking. Regards, Sven > -- ___ Lazarus mailing list Lazarus@lists.lazarus-ide.org https://lists.lazarus-ide.org/listinfo/lazarus
Re: [Lazarus] Using a component OBJ file in Lazarus?
On 11.06.2018 21:03, Bo Berglund via Lazarus wrote: On Mon, 11 Jun 2018 10:23:44 +0200, Michael Schnell via Lazarus wrote: You want to compile some 3rd party Dongle code in the IDE ? That is more than weired ! Sorry, I don't really know what you mean here... What is the reason for this comment? Unlike Delphi it seems like when one wants to add components to the development IDE palette in Lazarus one has actually to *rebuild* the IDE, there seems to be no otehr way... As fpc/Lazarus dos not (yet) provide run time packages, and IMHO it will ask for major problems when compiling the Lazarus IDE to contain the Dongle code, I suppose your best option is to replace the Dongle .OBJ file by a small pascal function and use this to build your package to allow it for compiling the IDE (providing the design time stuff) and the user program (providing the run time stuff). Now you need to "fake" the runtime package behavior by doing the said small pascal function in a way that it dynamically (not in the startup code !) loads and then uses a dll . The dll would be done in a way that it just forwards the call to the functions provided by Dongle .OBJ to same, and statically links to it. -Michael -- ___ Lazarus mailing list Lazarus@lists.lazarus-ide.org https://lists.lazarus-ide.org/listinfo/lazarus
