DLL Programmer's Guide for TNS/R Systems

DLL Programmer’s Guide for TNS/R Systems—522203-002
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5
Advanced DLL Facility Controls
This section tells how you can manually override and extend previously described
linker and loader defaults and options to meet special needs. These advanced options
fall loosely into four categories that compose the major headings in this section:
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Linker Input Controls
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Linker Output Controls
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Link-Time Operation
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Load-Time Operation
Linker Input Controls
Specifying Which Inputs Go into a Link on page 2-5 describes the essential controls
over linker inputs. This section covers less usual situations where more precise control
over inputs is needed.
Making the Linker Accept Only DLLs or Only Archives
The following options act as a three-way switch that sets the mode for processing
subsequent items in the command stream. They allow you to constrain the class of
files the linker accepts in a link operation:
These options can be inserted multiple times, and each time, the option sets the mode
for processing subsequent input-file names in the command-stream, until another of
these options appears and changes the mode again. At the beginning of the command
stream, the undeclared mode is -b dynamic. The following examples illustrate error
conditions that can occur when the linker opens a file named either directly on the
command line or in a -lib option.
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If -b static is in effect and the file is a DLL, the linker terminates in error.
•
If -b dllsonly is in effect and the file is an archive, the linker terminates in
error.
Option Constraint on Linker
-b static Accept only archives, not DLLs
-b dllsonly Accept only DLLs, not archives
-b dynamic Accept both archives and DLLs