Re: [personal kdb+] Standalone KDB/C program without using c.dll ?

Community Support
1

can you link with c.obj instead?

e.g. http://kx.com/q/w32/c.obj

2

This is pretty cool, all this time and builds of qpad and I didn’t realize that I can do that :)

Thanks a lot, Charlie, works like a charm!

Oleg

3

Thank you for the reply.

i have very minimum knowledge with Visual Studio 2010, do you know how to link a obj file in this IDE?

4

Hi, Oleg,

are you using Visual studio to compile your code? if yes, could you let me know how to link to c.obj in visual studio?

Many thanks

5

Just include it in your project, same way you did with c.lib to use c.dll
Don’t forget to remove c.lib or exclude it from build.

Cheers!

6

This is exactly what I did, but VS fails with the following message:

1>------ Build started: Project: demo_kdb1, Configuration: Debug Win32 ------
1>Build started 1/24/2013 4:29:04 PM.
1>InitializeBuildStatus:
1>  Touching “Debug\demo_kdb1.unsuccessfulbuild”.
1>ClCompile:
1>  connect.cpp
1>ManifestResourceCompile:
1>  All outputs are up-to-date.
1>
1>LINK : warning LNK4098: defaultlib ‘MSVCRTD’ conflicts with use of other libs; use /NODEFAULTLIB:library
1>c.obj : error LNK2019: unresolved external symbol __imp__closesocket@4 referenced in function _cls
1>c.obj : error LNK2019: unresolved external symbol __imp__ioctlsocket@12 referenced in function _snb
1>c.obj : error LNK2019: unresolved external symbol __imp__WSAStartup@8 referenced in function _wsa
1>c.obj : error LNK2019: unresolved external symbol __imp__gethostbyaddr@12 referenced in function _hl
1>c.obj : error LNK2019: unresolved external symbol __imp__htonl@4 referenced in function _hl
1>c.obj : error LNK2019: unresolved external symbol __imp__ntohl@4 referenced in function _addr
1>c.obj : error LNK2019: unresolved external symbol __imp__gethostbyname@4 referenced in function _addr
1>c.obj : error LNK2019: unresolved external symbol __imp__inet_addr@4 referenced in function _addr
1>c.obj : error LNK2019: unresolved external symbol __imp__accept@12 referenced in function _accp
1>c.obj : error LNK2019: unresolved external symbol __imp__bind@12 referenced in function _cb
1>c.obj : error LNK2019: unresolved external symbol __imp__connect@12 referenced in function _cb
1>c.obj : error LNK2019: unresolved external symbol __imp__htons@4 referenced in function _cb
1>c.obj : error LNK2019: unresolved external symbol __imp__socket@12 referenced in function _cb
1>c.obj : error LNK2019: unresolved external symbol __imp__setsockopt@20 referenced in function _sopt
1>c.obj : error LNK2019: unresolved external symbol __imp__listen@8 referenced in function _lstn
1>c.obj : error LNK2019: unresolved external symbol __imp__ntohs@4 referenced in function _pod
1>c.obj : error LNK2019: unresolved external symbol __imp__getsockname@12 referenced in function _pod
1>c.obj : error LNK2019: unresolved external symbol __imp__getsockopt@20 referenced in function _apu
1>c.obj : error LNK2019: unresolved external symbol __imp__select@20 referenced in function _apu
1>c.obj : error LNK2019: unresolved external symbol __imp__recv@16 referenced in function _rcv
1>c.obj : error LNK2019: unresolved external symbol __imp__send@16 referenced in function _snd

I included this file by right click project name, -> properties -> VC++ Directories -> modify the Library Directories
Then -> Linker -> input -> additional dependences -> add c.obj

Is this what I am supposed to do?

7

While you are at the libs dialog, add “ws_32.lib” as well.?

8

google the compiler error?

e.g.

http://stackoverflow.com/questions/3007312/resolving-lnk4098-defaultlib-msvcrt-conflicts-with

or

http://stackoverflow.com/questions/925540/how-to-resolve-the-following-linker-errors-in-visual-studio

do they help?

btw, you mention developing a “studio” style app, maybe worth while just double-checking what’s already available. e.g. there are at least (in no particular order)

http://qinsightpad.com

http://timestored.com

http://carlosbutler.com/Webstudio

http://www.firstderivatives.com/delta_ide.asp

http://www.qkdt.org

http://code.kx.com/wiki/StudioForKdb%2B

and likely others…

thanks

9

Thanks Charles, I figured out what’s going wrong.

I am missing a library file ws2_32.lib. Passing this file to the linker solves the problem.

And thank you for your suggestion on the apps, but I am actually making a kdb add-in for Excel with additional functionality, some of them are from other scientific C++ libraries. I think it’s better for me to build everything from scratch.

Best

10

btw, if you’re creating an add-in for excel, please bear in mind this note

http://code.kx.com/wiki/Cookbook/InterfacingWithC#Windows_and_the_loadlibrary_api

this might also apply to c.obj in addition to c.dll (as you will be building a dll for loading into excel, an xll).

thanks

11

Thanks for the reply, so I assume I would use cst.obj instead.

Best