Some brain-dead C++ compilation environments on AIX require that the use of preprocessor is confined to quite an old dialect, certainly not a C99 conformant one. Such systems are sadly still in use and relied on by commercial organisations. Sadly this means Poco will not build on them. This is because Poco uses C++ style comments on the end of preprocessor directives. In theory there is nothing wrong with this, it is the compilers that are at fault for not allowing something that should be allowed. But sometimes there is no choice but to use these compilers.
Can Poco please be changed so that any comments on the end of preprocessor directives are done as C comments, rather than C++? This will make it more portable, particularly for AIX.