On Thu, Oct 12, 2006 at 06:56:58AM -0400, Bob Rossi wrote: > On Thu, Oct 12, 2006 at 09:48:13AM +0200, Paolo Bonzini wrote: > > > > >In particular, I was just wondering how do compile GCC with debug. Not > > >how to debug it. I tried CFLAGS="-g" ./configure ..., but it still > > >compiled with gcc -O2 -g. Anyways, if anyone knows a helpful configure > > >trick that will help get me ready to debug gcc, please let me know. > > > > By default, GCC bootstraps itself, and after the first stage it always > > compiles itself with optimization enabled. So what you need is > > > > ./configure --enable-languages=c,c++ --disable-bootstrap > > make CFLAGS=-g > > > > (or equivalently, with CFLAGS=-g passed to configure). > > Thanks Paolo, > > Here's what I have so far. > > ../gcc/configure CFLAGS="-g" --enable-languages=c,c++ --enable-checking > --disable-bootstrap --prefix=$PWD/../prefixdir
Actually, the CFLAGS="-g" caused a problem. OK, now, as I expected, I configure with ../gcc/configure --enable-languages=c,c++ --enable-checking --disable-bootstrap --prefix=$PWD/../prefixdir and the gcc that is put into prefixdir is compiled with -O2 and -g, which makes it hard to follow in the debugger. Anyone have a clue on how to compile gcc so only -g is used, and not -O2? Typically, I use the CFLAGS trick, but it doesn't seem to work for gcc. Thanks, and sorry for all the noise. Bob Rossi
