branch bootstrap failure: exception_support.cc

[Robert Lipe]

While I've been out of the saddle for a while, I return to bootstrap
errors on the 3.0 branch:

/play/negcs/gcc/xgcc -B/play/negcs/gcc/ -nostdinc++ -L/play/negcs/i686-pc-sco3.2v5.0.6/libstdc++-v3/src -L/play/negcs/i686-pc-sco3.2v5.0.6/libstdc++-v3/src/.libs -B/usr/local/i686-pc-sco3.2v5.0.6/bin/ -B/usr/local/i686-pc-sco3.2v5.0.6/lib/ -isystem /usr/local/i686-pc-sco3.2v5.0.6/include -I/play/egcs/libstdc++-v3/../gcc -I/play/egcs/libstdc++-v3/../include -I/play/egcs/libstdc++-v3/include -I/play/egcs/libstdc++-v3/include/std -I/play/egcs/libstdc++-v3/include/c_std -I../include -I/play/egcs/libstdc++-v3/libsupc++ -g -O2 -fno-implicit-templates -Wall -Wno-format -W -Wwrite-strings -Winline -fdiagnostics-show-location=once -ffunction-sections -fdata-sections -g -c /play/egcs/libstdc++-v3/libsupc++/del_opvnt.cc
/play/egcs/libstdc++-v3/libsupc++/del_opvnt.cc:0: warning: -ffunction-sections 
   may affect debugging on some targets.
make[4]: *** No rule to make target `exception_support.cc', needed by `exception_support.lo'.  Stop.


I see rth has been hot and heavy on exception handling, but I can't tell
if this is related and I can find no reference to exception_support in
the ChangeLogs.


/play/egcs/libstdc++-v3/libsupc++/del_opnt.cc:0: warning: -ffunction-sections 
   may affect debugging on some targets.

As an aside, this warning seems a little silly.  The compiler knows what
the debug format is, it knows what the target is, and it probably comes
closer to knowing if it's going to affect THIS target or not than I do.

Why give such a mysterious message?

RJL