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Q42323: "Symbol Defined More Than Once" Linking to QuickC 2.00 Routine

Article: Q42323
Product(s): See article
Version(s): 4.00 4.00b 4.50
Operating System(s): MS-DOS
Keyword(s): ENDUSER | B_BasicCom S_QuickC S_C | mspl13_basic
Last Modified: 19-OCT-1990

Calling C routines compiled with Microsoft QuickC Compiler version
2.00 works correctly only from BASIC routines compiled with Microsoft
QuickBASIC version 4.50 or Microsoft BASIC PDS version 7.00. Using
versions of QuickBASIC earlier than 4.50 or using BASIC compiler 6.00
or 6.00b results in numerous LINK errors of "Symbol Defined More Than
Once" (L2025).

If the QuickC library includes the C Graphics or Pgchart library
routines, then QuickBASIC version 4.50 calling programs must be
compiled without the /O option (using the BRUN45 library instead of
BCOM45); otherwise, you will get many "Symbol Defined More Than Once"
errors at link time.

The presence of the Graphics or Pgchart libraries does not affect
LINKing with Microsoft BASIC PDS 7.00.

QuickBASIC versions 4.00 and 4.00b and Microsoft BASIC Compiler
versions 6.00 and 6.00b require QuickC version 1.00 or 1.10.

QuickBASIC version 4.50 requires QuickC version 2.00.

For more information about linked Microsoft QuickBASIC or compiled
BASIC with Microsoft C, search in this Knowledge Base using the
following word:

   BAS2C

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