any idea of how can i detect if a section is empty?

specificaly i would like to generate data and code sections when the preprocesor finds _TEXT _DATA and _BSS macros but not to gerate a section
if this macros are not folowed by data or code like:



this will be expanded to:


but this:



will be ignored.

I'm working in an include file that will make asm files (generated by the borland freecommandline C compiler) "assemblyables" by fasm

I allready have assembled some files but i want to remove the empty sections.

thanks.

In most cases an empty section tells the loader to allocate uninitialisesd memory for things like stacks (your BSS example). In a PE file this simply means one extra entry in the header of 40 bytes.

However since you want to remove the sections then I would suggest a 'section' structure (struc is a special macro that can take a label as a parameter). Then you also need an 'ends' macro which will detect the length of the section and act accordingly.