Question & Answer
Question
How do you determine the XL C/C++ for AIX compiler version installed on your machine?
Cause
When using lslpp -l and grep commands to search for the installed compiler file sets, a common mistake is to misinterpret the xlC.aix61.rte or the xlC.aix50.rte flieset as the XL C/C++ for AIX compiler file set.
Answer
As shown in the following examples, the most common way to determine the XL C/C++ compiler version on your machine is by using the -qversion option.
Example:
$ /usr/vacpp/bin/xlC -qversion
IBM XL C/C++ for AIX, V11.1 (5724-X13)
Version: 11.01.0000.0015
or
$ /usr/vac/bin/xlc -qversion
IBM XL C/C++ for AIX, V11.1 (5724-X13)
Version: 11.01.0000.0015
$
As shown in the following example, another method is to use the lslpp -l and grep commands to search for the installed compiler file sets.
Example:
$ lslpp -l | grep "vac.C"; lslpp -l | grep "vacpp.cmp.core"; lslpp -l | grep "xlC.aix*"
vac.C 11.1.0.15 COMMITTED IBM XL C Compiler
vac.C 11.1.0.15 COMMITTED IBM XL C Compiler
vacpp.cmp.core 11.1.0.15 COMMITTED IBM XL C/C++ Compiler
vacpp.cmp.core 11.1.0.15 COMMITTED IBM XL C/C++ Compiler
xlC.aix61.rte 12.1.0.2 COMMITTED IBM XL C++ Runtime for AIX 6.1
$
Note: Use caution with the lslpp method. Do not misinterpret the xlC.aix61.rte or the xlC.aix50.rte flieset as the XL C/C++ for AIX compiler file set. Here is the correct mapping between the file sets and the products:
| File set | Product |
| vac.C | XL C for AIX |
| vacpp.cmp.core | XL C/C++ for AIX |
| xlC.aix61.rte (on AIX6.1) xlC.aix50.rte (on AIX5.*) | XL C++ Runtime for AIX |
You have the following versions:
V11.1.0.15 for the XL C for AIX compiler
V11.1.0.15 for the XL C/C++ for AIX compiler and
V12.1.0.2 for the XL C++ Runtime for AIX
Note: The version of the C++ Runtime can be higher than the Compiler because the C++ Runtime is backwards compatible.
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Document Information
Modified date:
06 December 2018
UID
swg21652272