COBOL Manual for TNS/E Programs (H06.08+, J06.03+)

Example 165 Building a DLL From a Single Source File in One Step (OSS)
ecobol lib1.cob -Wshared -Weld="-export_all
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 eld 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 ZCOBDLL -l ZCREDLL, which links your file with the DLLs named
ZCOBDLL and ZCREDLL.
The resulting loadfile is a DLL.
In Example 166, the first command compiles the source file lib1.cob, creating the linkable object
file lib1.o. The second command links lib1.o with the DLLs named ZCOBDLL and ZCREDLL,
creating a DLL named mydll.
Example 166 Building a DLL From a Single Source File in Two Steps (OSS)
ecobol lib1.cob -Wshared -c
eld lib1.o -shared -export_all -optional_lib -l ZCOBDLL
-l ZCREDLL -o mydll
PC Environment: One-Step Method
Compile the source file with these options:
• -Wshared
NOTE: Do not use -c.
• -Weld 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 167 compiles the source file lib1.cob and links the resulting object
file, creating a DLL named mydll.
Dynamic-Link Libraries (DLLs) 603