Q68158: BASIC 7.10 LINK "L4051 Cannot Find Library" If Using 7.00 .LIB

Article: Q68158
Product(s): See article
Version(s): 7.10   | 7.10
Operating System(s): MS-DOS | OS/2
Keyword(s): ENDUSER | SR# S901113-69 LINK.EXE 4051 | mspl13_basic
Last Modified: 15-JAN-1991

If you get the linker warning message "L4051 : BCL70xxx.LIB : cannot
find library" while linking a program in BASIC PDS version 7.10, the
problem may be that you are linking to a .LIB library you created with
BASIC PDS 7.00. This will happen even if BASIC PDS version 7.00 has
been deleted from your hard disk. If you created your own .LIB library
in 7.00 and then link it to your BASIC 7.10 module, then you will need
to recompile the BASIC routines in the .LIB using BASIC version 7.10
and rebuild the .LIB library (using the LIB.EXE Library Manager).

The L4051 error can also occur because of an incorrectly set LIB path.
Type "SET" at the DOS command line to be sure that the LIB environment
variable points to the BASIC 7.10 libraries. You can set the LIB path
(automatically at boot time) in your AUTOEXEC.BAT batch file as
follows:

   SET LIB=C:\BC71\LIB

This information applies to Microsoft BASIC Professional Development
System (PDS) version 7.10 for MS-DOS and MS OS/2.

To duplicate the "L4051 : cannot find library" warning, build a
library from the following code using BASIC version 7.00:

'test.bas
'demo file built with BASIC PDS 7.00
SUB Pds70sub
print "this is from the library built with PDS 7.00"
END SUB

Compile and build the library as follows in BASIC version 7.00:

   BC /O /Fs test ;
   LIB mylib + test ;        [builds MYLIB.LIB]
   LINK /Q mylib.lib,mylib.qlb,,qbxqlb.lib ;    [links MYLIB.QLB]

Then create a module to CALL the above SUBprogram Pds70sub from the
library MYLIB:

'main.bas
'This module calls the SUBprogram in a library created with PDS 7.00
print "this is the calling module"
call pds70sub

Compile and link as follows in BASIC version 7.10:

   BC /O /Fs main ;
   LINK main,,,BCL71EFR.LIB + MYLIB.LIB ;

Now you should receive the warning message:

   LINK : warning L4051 : BCL70EFR.lib : cannot find library
   Enter new file spec:

To correct the problem, recompile, relink, and rebuild the library
MYLIB using BASIC PDS version 7.10.

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