COBOL Manual for TNS and TNS/R Programs

Libraries and Utility Routines
HP COBOL Manual for TNS and TNS/R Programs—522555-006
13-14
Building a DLL From a Single Source File
OSS Environment: Two-Step Method
1. Compile the source file with these options:
•
-Wshared
•
-c
The result is a linkfile.
2. Link the linkfile, using the ld utility with these options:
•
Either:
°
-export_all, which exports all program names in the source file
°
-export program-name, which exports only the specified program
name. You must repeat this option for every program name that you want
to export.
•
-optional_lib -l ZCOBSRL -l ZCRESRL, which links your file with the
SRLs named ZCOBSRL and ZCRESRL
The resulting loadfile is a DLL.
In Example 13-4, the first command compiles the source file lib1.cob, creating the
linkable object file lib1.o. The second command links lib1.o with the SRLs named
ZCOBSRL and ZCRESRL, creating a DLL named mydll.
PC Environment: One-Step Method
Compile the source file with these options:
•
-Wshared
•
-Wld with either of these arguments:
°
-export_all, which exports all program names in the source file
°
-export program-name, which exports only the specified program name.
You must repeat this option for every program name that you want to export.
The resulting loadfile is a DLL.
The command in Example 13-5 compiles the source file lib1.cob and links the
resulting object file, creating a DLL named mydll.
Example 13-4. Building a DLL From a Single Source File in Two Steps (OSS)
nmcobol lib1.cob -Wshared -c
ld lib1.o -shared -export_all -optional_lib -l ZCOBSRL
-l ZCRESRL -o mydll
Note. Do not use -c.