I see. My wrong assumption. But if it is not used, shouldn't all references to #ifdef DEBUG be erased in the source? Dov On Sun, Apr 29, 2012 at 23:59, Eli Zaretskii wrote: > > Date: Sun, 29 Apr 2012 21:41:06 +0300 > > From: Dov Grobgeld > > Cc: 11380@debbugs.gnu.org > > > > 3. configure and make by the following steps: > > > > ./autogen.sh > > ./configure --prefix=/usr/local/public-dev/ CPPFLAGS=-DDEBUG CFLAGS="-g > > -O0" > > Why are you compiling with -DDEBUG? That does nothing useful. >