PureBasic Forums - English

Posted: **Mon Nov 07, 2005 8:14 pm**

Hi

Is there a way to use a C++ static Lib in PureBasic? I know how to create Userlibs with C static libs, but with C++ I have no success.

Thanks

Posted: **Mon Nov 07, 2005 10:09 pm**

This is simple : just compile it as a Multithreaded DLL and link with MSVCPRT.LIB (you can add it in your project to resolve hypotetical unresolved symbols).

Posted: **Mon Nov 07, 2005 10:37 pm**

Ok, thanks

Posted: **Thu Nov 10, 2005 8:56 pm**

KarLKoX wrote:This is simple

Please can you explain it to me like I'm a two-year-old, if I have a *.lib file can I make it usable with PureBasic?

If so, how?

Thanks

Posted: **Thu Nov 10, 2005 10:01 pm**

the.weavster wrote:if I have a *.lib file can I make it usable with PureBasic?

Coding's nothing for two year olds...

If it's a C++ library, you'll have to write a wrapper, if it's a C library, you can
either write a simple wrapper (functionnames have to start with "PB_"), use
the method mentioned here or wait for this feature to be implemented in
PureBasic.

Another solution can be to use the DLL-Importer (PB's Library SDK) but you'll
possibly run into problems if the library depends on other libraries.

Posted: **Fri Nov 11, 2005 8:57 pm**

I don't know why, but everytime I'm trying to do a PBlib of a C++ code (wrapped by a C code), I always get unresolved externals errors

And that for every lib I'm trying to wrap

Posted: **Sat Nov 12, 2005 12:43 am**

try adding windows libs to your desc file.

Code: Select all

;
; Langage used to code th library: ASM or C
C
;
; Number of windows DLL than the library need
1
crtmt2.lib
; Library type (Can be OBJ or LIB)
;
OBJ
;
.....................
.....................

you could use any number of libs, includind msvcrt.

Posted: **Sat Nov 12, 2005 9:48 am**

yep, I know, unfortunately it doesn't work, I've got plainty of errors starting with __imp...

Posted: **Sat Nov 12, 2005 11:18 am**

I did not find the solution until now. Just to repeat again. I'm trying to link a c++ static lib, not dll. To use DLL is not a problem

Posted: **Sat Nov 12, 2005 11:32 am**

pg wrote:I did not find the solution until now. Just to repeat again. I'm trying to link a c++ static lib, not dll. To use DLL is not a problem

I think he told you about the DLL Importer because it also works with .lib files, not sure though...
I'm still trying to work out my C++ lib, without success for the moment

Posted: **Sat Nov 12, 2005 12:24 pm**

Polo wrote:I think he told you about the DLL Importer because it also works with .lib files, not sure though...

Exactly

Polo wrote: I'm still trying to work out my C++ lib, without success for the moment

Can you give some specific error messages (unresolved external symbols)?
What's missing?

Posted: **Sat Nov 12, 2005 12:28 pm**

Here it is :

POLINK: warning: Multiple '.data' sections found with different flags (0xc0000040 and 0x60000040).
POLINK: error: Unresolved external symbol '__imp_??0_Lockit@std@@QAE'.
POLINK: error: Unresolved external symbol '__imp_??1_Lockit@std@@QAE'.
POLINK: error: Unresolved external symbol '__imp__fstat'.
POLINK: error: Unresolved external symbol '__imp_??0?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAE@PBDIABV?$allocator@D@1@'.
POLINK: error: Unresolved external symbol '__imp_??1?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAE'.
POLINK: error: Unresolved external symbol '__imp_??0?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAE@ABV?$allocator@D@1@'.
POLINK: error: Unresolved external symbol '__imp_??Y?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAEAAV01@D'.
POLINK: error: Unresolved external symbol '__imp_?length@?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@'.
POLINK: error: Unresolved external symbol '__imp_?c_str@?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@'.
POLINK: error: Unresolved external symbol '__imp_??0?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAE@PBDABV?$allocator@D@1@'.
POLINK: error: Unresolved external symbol '__imp_??4?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAEAAV01@ABV01@'.
POLINK: error: Unresolved external symbol '__imp_??0?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAE@ABV01@'.
POLINK: error: Unresolved external symbol '__imp_??Mstd@@YA_NABV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@0@0'.
POLINK: error: Unresolved external symbol '__imp_??_F?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@'.
POLINK: error: Unresolved external symbol '??Hstd@@YA?AV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@0@ABV10@D@Z'.
POLINK: error: Unresolved external symbol '__imp_??4?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAEAAV01@D'.
POLINK: error: Unresolved external symbol '__imp_??A?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAEAADI'.
POLINK: error: Unresolved external symbol '__imp_?size@?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@'.
POLINK: error: Unresolved external symbol '__imp_?data@?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@'.
POLINK: error: Unresolved external symbol '__imp_??0?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAE@IDABV?$allocator@D@1@'.
POLINK: error: Unresolved external symbol '__imp_?npos@?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@'.
POLINK: error: Unresolved external symbol '__imp_?erase@?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAEAAV12@II'.
POLINK: error: Unresolved external symbol '__imp_?resize@?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAEXI'.
POLINK: error: Unresolved external symbol '__imp_?append@?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAEAAV12@PBDI'.
POLINK: error: Unresolved external symbol '__imp_?append@?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAEAAV12@ID'.
POLINK: error: Unresolved external symbol '__imp_?append@?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAEAAV12@PBD'.
POLINK: fatal error: 26 unresolved external(s).

Posted: **Sat Nov 12, 2005 12:41 pm**

Maybe your lib needs other libs to be linked, like

this: #pragma comment(lib, "mylib.lib"), if you use such comments?

Posted: **Sat Nov 12, 2005 12:41 pm**

Polo, did you do what jack described? Did you link msvcrt.lib?

Beside the common c-runtimes (msvcrt, crtmt, crtmt2 (mt=multithreaded))
"_fstat" is defined in fstat.obj. You could add this directly to your VC project.

I can only guess about the rest. Are you using VC >= 7.0 ?

Posted: **Sat Nov 12, 2005 12:54 pm**

Yeah, exactly, I've included these 3 : msvcrt, crtmt, crtmt2
I'm using VC 6.0.
I'm gonna try for the fstat, but for the rest ?

PureBasic Forums - English

C++ static libs

C++ static libs