Hello Folks, My question is: How to output the source as comment in the generated assembly language code ? Pretty much like the DiabData compiler, which has the option -Xpass-source to do that: $ dcc -S -Xpass-source hello.c I didn't see any similar option in the gcc user manual. Any solution to merge both languages adequately will suit me. Thanks in advance for any help. Regards Benoît Siruguet, Thales Avionics