$ uname -sv
AIX 4
$ uname -r
3
$ xlC_r
VisualAge C++ Professional / C for AIX Compiler, Version 5
Notes
The C preprocessor provided with Visual Age C++ 5.0 does not
process the #pragma statement properly in all cases. We
therefore used the GNU C preprocessor (provided in
$ACE_ROOT/bin). You must put $ACE_ROOT/bin in your path before
running the tao_idl compiler.