Re: [personal kdb+] Standalone C/C++ program using KDB ?

jack31 · January 25, 2013, 4:31am

link with c.obj (w32) here
http://code.kx.com/wsvn/code/kx/kdb%2B/w32/?#a735e1cacd939f9eedb1c43577954dd1f

for the example http://code.kx.com/wsvn/code/contrib/wiki/csv.c,
compile like this:

cl -DKXVER=3 csv.c c.obj

which should give you csv.exe

yzhao0527 · January 25, 2013, 5:07am

This is the most frustrating part, i followed exactly your steps with visual studio 2010, but still getting error messages.

I attached all files, would you please have a look … is it just me? why everyone’s telling this should work but just cannot compile on both my desktop and laptop.

csv.c

Microsoft (R) Incremental Linker Version 10.00.30319.01

/out:csv.exe

csv.obj

c.obj

MSVCRT.lib(MSVCR100.dll) : error LNK2005: _realloc already defined in LIBCMT.lib(realloc.obj)

MSVCRT.lib(MSVCR100.dll) : error LNK2005: _malloc already defined in LIBCMT.lib(malloc.obj)

MSVCRT.lib(MSVCR100.dll) : error LNK2005: __errno already defined in LIBCMT.lib(dosmap.obj)

LINK : warning LNK4098: defaultlib ‘MSVCRT’ conflicts with use of other libs; use /NODEFAULTLIB:library

c.obj : error LNK2019: unresolved external symbol __imp__closesocket@4 referenced in function _cls

c.obj : error LNK2019: unresolved external symbol __imp__ioctlsocket@12 referenced in function _snb

c.obj : error LNK2019: unresolved external symbol __imp__WSAStartup@8 referenced in function _wsa

c.obj : error LNK2019: unresolved external symbol __imp__gethostbyaddr@12 referenced in function _hl

c.obj : error LNK2019: unresolved external symbol __imp__htonl@4 referenced in function _hl

c.obj : error LNK2019: unresolved external symbol __imp__ntohl@4 referenced in function _addr

c.obj : error LNK2019: unresolved external symbol __imp__gethostbyname@4 referenced in function _addr

c.obj : error LNK2019: unresolved external symbol __imp__inet_addr@4 referenced in function _addr

c.obj : error LNK2019: unresolved external symbol __imp__accept@12 referenced in function _accp

c.obj : error LNK2019: unresolved external symbol __imp__bind@12 referenced in function _cb

c.obj : error LNK2019: unresolved external symbol __imp__connect@12 referenced in function _cb

c.obj : error LNK2019: unresolved external symbol __imp__htons@4 referenced in function _cb

c.obj : error LNK2019: unresolved external symbol __imp__socket@12 referenced in function _cb

c.obj : error LNK2019: unresolved external symbol __imp__setsockopt@20 referenced in function _sopt

c.obj : error LNK2019: unresolved external symbol __imp__listen@8 referenced in function _lstn

c.obj : error LNK2019: unresolved external symbol __imp__ntohs@4 referenced in function _pod

c.obj : error LNK2019: unresolved external symbol __imp__getsockname@12 referenced in function _pod

c.obj : error LNK2019: unresolved external symbol __imp__getsockopt@20 referenced in function _apu

c.obj : error LNK2019: unresolved external symbol __imp__select@20 referenced in function _apu

c.obj : error LNK2019: unresolved external symbol __imp__recv@16 referenced in function _rcv

c.obj : error LNK2019: unresolved external symbol __imp__send@16 referenced in function _snd

csv.exe : fatal error LNK1120: 21 unresolved externals

yzhao0527 · January 25, 2013, 2:01pm

Never Mind, 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.

Best

qi_li22 · November 7, 2013, 1:41pm

Hi,
I am new to this and trying to run the sample file you provided using visual studio. I got the following messages:

error LNK2019: unresolved external symbol _khpu referenced in function _main

I am not an expert on Visual Studio C++. It seems that I missed some settings. Can someone help? Thank you.

Qi

charlie1 · November 7, 2013, 1:55pm

you need to link with the kdb+ c-api library.
For windows 32bit -

http://kx.com/q/w32/c.lib which uses http://kx.com/q/w32/c.dll at run time

or

http://kx.com/q/w32/c.obj which does not depend on c.dll

For win 64bit, use files from http://kx.com/q/w64

qi_li22 · November 7, 2013, 7:42pm

Thank you. That works now!

?

Another quick question:

?

When I try to call

?

k(handle, queryString, (K)0),

?

this queryString is in type S which is defined by KDB.

?

How can I transfer a std::string to type S? I tried different ways and failed.

?

Qi

kuentang · November 7, 2013, 8:42pm

S is just typedef char*S,<o:p></o:p>

<o:p> </o:p>

A quick and dirty solution is just to cast the const away using <o:p></o:p>

<o:p> </o:p>

const_cast<char*>(Text.c_str())<o:p></o:p>

<o:p> </o:p>

I don’t like this solution also. So I redefine the function k(handle, queryString, (K)0), using <o:p></o:p>

typedef const char* SS;<o:p></o:p>

extern k(I,const SS,…),<o:p></o:p>

<o:p> </o:p>

HTH,<o:p></o:p>

<o:p> </o:p>

Kim<o:p></o:p>

<o:p> </o:p>

Von: personal-kdbplus@googlegroups.com [mailto:personal-kdbplus@googlegroups.com] Im Auftrag von Qi Li
Gesendet: Donnerstag, 7. November 2013 20:42
An: personal-kdbplus@googlegroups.com
Betreff: Re: [personal kdb+] Standalone C/C++ program using KDB ?<o:p></o:p>

<o:p> </o:p>

Thank you. That works now!<o:p></o:p>

<o:p></o:p>

Another quick question:<o:p></o:p>

<o:p></o:p>

When I try to call <o:p></o:p>

<o:p></o:p>

k(handle, queryString, (K)0), <o:p></o:p>

<o:p></o:p>

this queryString is in type S which is defined by KDB. <o:p></o:p>

<o:p></o:p>

How can I transfer a std::string to type S? I tried different ways and failed. <o:p></o:p>

<o:p></o:p>

Qi

<o:p></o:p>

On Thu, Nov 7, 2013 at 8:55 AM, Charles Skelton <charlie@kx.com> wrote:<o:p></o:p>

you need to link with the kdb+ c-api library.<o:p></o:p>

For windows 32bit -<o:p></o:p>

http://kx.com/q/w32/c.lib which uses http://kx.com/q/w32/c.dll at run time<o:p></o:p>

or<o:p></o:p>

http://kx.com/q/w32/c.obj which does not depend on c.dll<o:p></o:p>

<o:p> </o:p>

For win 64bit, use files from http://kx.com/q/w64<o:p></o:p>

<o:p> </o:p>

On Thu, Nov 7, 2013 at 2:41 PM, Qi Li <qi.li22@gmail.com> wrote:<o:p></o:p>

Hi,<o:p></o:p>

I am new to this and trying to run the sample file you provided using visual studio. I got the following messages:<o:p></o:p>

<o:p> </o:p>

error LNK2019: unresolved external symbol _khpu referenced in function _main<o:p></o:p>

<o:p> </o:p>

I am not an expert on Visual Studio C++. It seems that I missed some settings. Can someone help? Thank you. <o:p></o:p>

<o:p> </o:p>

Qi<o:p></o:p>

qi_li22 · November 8, 2013, 1:48pm

Kim:

? Thank you very much. That works well.

?

? Regards,

?

Qi

Eric11 · April 21, 2016, 10:36am

I am new to c.dll and encounter this error if my code uses the function “K ktj(I, J)”:

error LNK2019: unresolved external symbol _ktj

Did I miss anything?

? 2013?11?7??? UTC+8??9:55:08?Charles Skelton???

you need to link with the kdb+ c-api library.
For windows 32bit -

http://kx.com/q/w32/c.lib which uses http://kx.com/q/w32/c.dll at run time

or

http://kx.com/q/w32/c.obj which does not depend on c.dll

For win 64bit, use files from http://kx.com/q/w64

effbiae · April 21, 2016, 1:23pm

> error LNK2019: unresolved external symbol _ktj

are you linking with c.lib or c.o?

> ? 2013?11?7??? UTC+8??9:55:08?Charles Skelton???
>>
>> you need to link with the kdb+ c-api library.
>> For windows 32bit -
>> http://kx.com/q/w32/c.lib which uses http://kx.com/q/w32/c.dll at run time
>> or
>> http://kx.com/q/w32/c.obj which does not depend on c.dll
>>
>> For win 64bit, use files from http://kx.com/q/w64
>>
>>
>> On Thu, Nov 7, 2013 at 2:41 PM, Qi Li <qi…@gmail.com> wrote:
>>>
>>> Hi,
>>> I am new to this and trying to run the sample file you provided using visual studio. I got the following messages:
>>>
>>> error LNK2019: unresolved external symbol _khpu referenced in function _main
>>>
>>> I am not an expert on Visual Studio C++. It seems that I missed some settings. Can someone help? Thank you.
>>>
>>> Qi
>>>
>>>
>>> On Thursday, January 24, 2013 11:31:09 PM UTC-5, Jack Andrews wrote:
>>>>
>>>> link with c.obj (w32) here
>>>> http://code.kx.com/wsvn/code/kx/kdb%2B/w32/?#a735e1cacd939f9eedb1c43577954dd1f
>>>>
>>>> for the example http://code.kx.com/wsvn/code/contrib/wiki/csv.c,
>>>> compile like this:
>>>>
>>>> cl -DKXVER=3 csv.c c.obj
>>>>
>>>> which should give you csv.exe
>>>>
>>>>
>>>> On Fri, Jan 25, 2013 at 7:06 AM, Yue Zhao <yzha…@gmail.com> wrote:
>>>> > Hi, folks,
>>>> >
>>>> > I have wrote a few C/C++ programs with interface to KDB, all of them needs
>>>> > to load c.dll at run time.
>>>> >
>>>> > I am wondering is there a way to write a standalone program that does not
>>>> > depend on any dynamic link library? so others without the dll file could
>>>> > also use my program?
>>>> >
>>>> > Best
>>>> >
>>>> > –
>>>> > Submitted via Google Groups

kuentang · April 21, 2016, 10:39pm

If you are using visual studio 2012 then you need to do the following:<o:p></o:p>

Right click on project,<o:p></o:p>

Properties,<o:p></o:p>

Linker,<o:p></o:p>

Input<o:p></o:p>

Additional dependencies<o:p></o:p>

Enter c.lib<o:p></o:p>

<o:p> </o:p>

HTH,<o:p></o:p>

Kim<o:p></o:p>

<o:p> </o:p>

Von: personal-kdbplus@googlegroups.com [mailto:personal-kdbplus@googlegroups.com] Im Auftrag von Eric
Gesendet: Donnerstag, 21. April 2016 11:36
An: Kdb+ Personal Developers
Betreff: Re: [personal kdb+] Standalone C/C++ program using KDB ?<o:p></o:p>

<o:p> </o:p>

I am new to c.dll and encounter this error if my code uses the function “K ktj(I, J)”:

error LNK2019: unresolved external symbol _ktj

Did I miss anything?

? 2013?11?7??? UTC+8??9:55:08?Charles Skelton???<o:p></o:p>

you need to link with the kdb+ c-api library.<o:p></o:p>

For windows 32bit -<o:p></o:p>

http://kx.com/q/w32/c.lib which uses http://kx.com/q/w32/c.dll at run time<o:p></o:p>

or<o:p></o:p>

http://kx.com/q/w32/c.obj which does not depend on c.dll<o:p></o:p>

<o:p> </o:p>

For win 64bit, use files from http://kx.com/q/w64<o:p></o:p>

<o:p> </o:p>

On Thu, Nov 7, 2013 at 2:41 PM, Qi Li <qi…@gmail.com> wrote:<o:p></o:p>

Hi,<o:p></o:p>

I am new to this and trying to run the sample file you provided using visual studio. I got the following messages:<o:p></o:p>

<o:p> </o:p>

error LNK2019: unresolved external symbol _khpu referenced in function _main<o:p></o:p>

<o:p> </o:p>

I am not an expert on Visual Studio C++. It seems that I missed some settings. Can someone help? Thank you. <o:p></o:p>

<o:p> </o:p>

Qi<o:p></o:p>

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Re: [personal kdb+] Standalone C/C++ program using KDB ?

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