Hello!

If somebody could help me with this?

Is there a way to stop FASM compiling process with custom error message?

I made a program where all symbolic constants which correspond to program parameters are contained in separate configuration file. I need a way to validate these configuration parameters during compilation time and stop compilation with corresponding error message if some parameters are not valid.
In the FAsm documentation I've found a "display" directive, which can help me with message showing, but what about compilation abort?

It was discussed among any other things in those threads:
http://board.flatassembler.net/topic.php?t=4554
http://board.flatassembler.net/topic.php?t=4714

Ok. I see. It's just too complicated to add this feature in FASM.
Anyway, thank you for quick answer.

In short, it reduces to the problem that three different types of such stopping would be needed. The "preprocessor halt", "strong assembler halt" and "weak assembler halt". First one for aborting the compilation during the preprocessing (currently achieved for example with making invalid syntax of macro, like "macro+"). Second one for aborting the compilation as soon as the assembler hits that place (currently achieved with invalid instruction, like "err"). The last one is to halt the assembler only when the error persist while the rest of the code is being resolved correctly (currently it may achieved with things like negative counts for repeating directives, like "rb -1"). The last one would be needed for example when the condition under which the error would happen depended on the values that have to be resolved, look here for some information: http://board.flatassembler.net/topic.php?t=3805