On Jan 27, 2016, at 11:25 AM, Barry Lichtenstein wrote:
It's not the JCL per-se. The combination of XOBJ object modules
and the Prelinker was a tactical solution to advancements in
programs, originally created for C programs. XOBJ object modules
addressed several deficiencies in OBJ object modules, such the
ability to have long case-sensitive external symbol names.
While it does the intended job, the Prelinker has several
drawbacks, such as the inability to incrementally rebind a module
so created (read "csect replacement"). The prelinker does not
handle GOFF object modules such as produced by C/C++ with XPLINK
and COBOL V5. GOFF object modules can define characteristics of a
program which cannot be represented in a load module.
Note that the binder has been producing program objects for over 25
years. It is difficult to make significant enhancements to OBJ
object module and load module formats. Some important things have
been added such as AMODE 64 and quad-word alignment.
[email protected]
Since COBOL does not and will not in the foreseeable future need
amode 64 I find the argument un helpful.
Ed
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