Gerrit van Niekerk wrote: >How can one implement single line conditional compile macros with GCC? > >Instead of having: > >#ifdef OPT1 ><valid C line> >#endif > >Having something like: >IFOPT1 <valid C line> > >The following works with BorlandC, but not GCC: > >#ifdef OPT1 >#define IFOPT1 >#else >#define IFOPT1 /##/ >#endif > >I understand why it does not work - I am looking for a solution, not an >explanation :) > > > Not quite what you are looking for, but how about? #ifdef OPT1 #define IFOPT1(x) x #else #define IFOPT1(x) #endif Then you write IFOPT1(stuff) This has the advantage you can write it mid-line, with stuff before and after it. Chris