On 28 Jul 2005 at 17:07, random@xxxxxxxxxxxxxxx wrote: > 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 Thanks Chris, This is a workable solution and portable too! Gerrit
