COBOL Link error 2029 with IBM VA COBOL

[TonyG]

Hello.

I'm trying to compile and link the COBOL sample program provided by Pervasive SDK 8.5 using IBM Visualage COBOL 3.0.7.

I get a link error "error LNK2029: "_BTRV@28" : unresolved external".

It's a very simple program with five "CALL"s to "_BTRV" and a few moves and displays as you can see at the end of this message.

"_BTRV@28" is not "CALL"ed anywhere in the source program and cannot be found in any of the .OBJ files.

So, why is it even looking for "_BTRV@28" ?

Any help would be greatly appreciated.

Thanks,
Tony
***************************************************************************************
IDENTIFICATION DIVISION.
*
PROGRAM-ID. "BTRSAMP".
*
*
ENVIRONMENT DIVISION.
CONFIGURATION SECTION.
SOURCE-COMPUTER. IBM-PC.
OBJECT-COMPUTER. IBM-PC.
*
*
DATA DIVISION.
*
WORKING-STORAGE SECTION.
*
* BTRIEVE OP CODES
*
01 B-OPEN PIC 9(4) COMP-5 VALUE 0.
01 B-INSERT PIC 9(4) COMP-5 VALUE 2.
01 B-GETFIRST PIC 9(4) COMP-5 VALUE 12.
01 B-UPDATE PIC 9(4) COMP-5 VALUE 3.
01 B-CLOSE PIC 9(4) COMP-5 VALUE 1.
*
01 B-STATUS PIC 9(4) COMP-5 VALUE 0.
01 KEY-NUMBER PIC 9(4) COMP-5 VALUE 0.
01 BUF-LEN PIC 9(4) COMP-5 VALUE 0.
01 FILE-NAME PIC X(13) VALUE SPACES.
01 POSITION-BLOCK PIC X(128) VALUE SPACES.
01 DATA-BUFFER.
02 DECIMAL-FIELD PIC 9(4) COMP-3 VALUE 0.
02 STRING-FIELD PIC X(36) VALUE SPACES.
01 DSP-STATUS PIC 9(5) COMP-5.
*
*
*
PROCEDURE DIVISION.
BEGIN.
*
* Open TEST.BTR
*
*
MOVE 0 TO BUF-LEN.
MOVE 0 TO KEY-NUMBER.
MOVE 'TEST.BTR ' TO FILE-NAME.
CALL "_BTRV" USING B-OPEN, B-STATUS, POSITION-BLOCK,
DATA-BUFFER, BUF-LEN, FILE-NAME, KEY-NUMBER.
IF B-STATUS NOT = 0
DISPLAY 'Error opening file. Status= ' B-STATUS
ELSE
DISPLAY 'File ' FILE-NAME ' successfully opened'
END-IF.
*
* Insert into TEST.BTR
*
*
MOVE 1 TO DECIMAL-FIELD.
MOVE 'Record 1' TO STRING-FIELD.
MOVE 40 TO BUF-LEN.
MOVE 0 TO KEY-NUMBER
CALL "_BTRV" USING B-INSERT, B-STATUS, POSITION-BLOCK,
DATA-BUFFER, BUF-LEN, FILE-NAME, KEY-NUMBER.
IF B-STATUS NOT = 0
DISPLAY 'Error inserting into file. Status= ' B-STATUS
ELSE
DISPLAY 'Inserted: ' DECIMAL-FIELD STRING-FIELD
END-IF.
*
* GetFirst
*
*
MOVE 40 TO BUF-LEN.
MOVE 0 TO KEY-NUMBER
CALL "_BTRV" USING B-GETFIRST, B-STATUS, POSITION-BLOCK,
DATA-BUFFER, BUF-LEN, FILE-NAME, KEY-NUMBER.
IF B-STATUS NOT = 0
DISPLAY 'Error Getting first record. Status= ' B-STATUS
ELSE
DISPLAY 'Retrieved: ' DECIMAL-FIELD STRING-FIELD
END-IF.
*
* Update into TEST.BTR
*
*
MOVE 2 TO DECIMAL-FIELD.
MOVE 'Record 2' TO STRING-FIELD.
MOVE 40 TO BUF-LEN.
MOVE 0 TO KEY-NUMBER
CALL "_BTRV" USING B-UPDATE, B-STATUS, POSITION-BLOCK,
DATA-BUFFER, BUF-LEN, FILE-NAME, KEY-NUMBER.
IF B-STATUS NOT = 0
DISPLAY 'Error updating file. Status= ' B-STATUS
ELSE
DISPLAY 'Updated to: ' DECIMAL-FIELD STRING-FIELD
END-IF.
*
* Close TEST.BTR
*
*
MOVE 0 TO BUF-LEN.
MOVE 0 TO KEY-NUMBER
CALL "_BTRV" USING B-CLOSE, B-STATUS, POSITION-BLOCK,
DATA-BUFFER, BUF-LEN, FILE-NAME, KEY-NUMBER.
IF B-STATUS NOT = 0
DISPLAY 'Error closing file. Status= ' B-STATUS
ELSE
DISPLAY 'Successfully closed TEST.BTR'
END-IF.


STOP RUN.

 

[mirtheil]

That's the ordinal of the _BTRV function which is in the W3BTRV7.DLL. Make sure you're linking in the W3BTRV7.LIB (or DLL) depending on how your compiler works.


Mirtheil
Certified Pervasive Developer
Certified Pervasive Technician
Custom VB and Btrieve development.

http://www.mirtheil.com

 

[TonyG]

Hello Mirtheil.

Thanks for your reply.

I'm sorry, but i tried using W3BTRV7.LIB from C:\PVSW\SDK\Intf\implib\win32 and from C:\PVSW\SDK\Intf\implib\win32x.

Both gave the same error.
Would it help if i can print and send you the output from the linker ?

Thanks,
Tony