I compiled the library for QNX6.5.0 using the QNX Momentics IDE. I had to make some changes to the code.
I took your example http://fuzzylite.com/cpp/. Program displays errors in string InputVariable* ambient = new InputVariable;
D:/YandexDisk/Work/CTAPT/Programming/RIK/Ide/fuzzylite/fuzzylite.cc:10: error: invalid use of incomplete type ‘struct fl::InputVariable’
C:/QNX650/target/qnx6/usr/include/fl/Engine.h:37: error: forward declaration of ‘struct fl::InputVariable’
Code connected with InputVariableclass was not changed. Class structure was not affected. The changes were in terms of specifying namespace std for some functions.