Correcting errors in linking
When you use the PGMNAME(UPPER)
compiler
option, the names of subprograms referenced in CALL
statements
are translated to uppercase. This change affects the linker, which
recognizes case-sensitive names.
About this task
For example, the compiler translates Call "RexxStart"
to Call
"REXXSTART"
. If the real name of the called program is RexxStart,
the linker will not find the program, and will produce an error message
that indicates that REXXSTART is an unresolved external reference.
This type of error typically occurs when you call API routines that are supplied by another software product. If the API routines have mixed-case names, you must take both of the following actions:
- Use the
PGMNAME(MIXED)
compiler option. - Ensure that
CALL
statements specify the correct mix of uppercase and lowercase in the names of the API routines.