> > Our project (MAME) recently converted a bunch of C code to C++, and > as a result our symbol size has bloated tremendously (EXE is now > 280MB(!) with symbols, versus 40MB without), killing our link times. > Our cohorts on the Linux side have not noticed any significant > difference. After some investigation, it looks like the difference is > due to stabs versus DWARF debugging information. > > > > We are using the sezero builds. I tried forcing mingw-w32 to output > DWARF-2 (via -gdwarf-2; also tried -ggdb) but the binary size ends up > almost identical. I strongly suspect that the compiler was not built > with support for generating DWARF symbols and is just ignoring my > pleas. > > > > I know the DWARF EH model is not supported, but from what I > understand, the support for DWARF debugging information is independent > of the EH model. > > > > So basically: > > > > 1. Can you confirm/deny the existence of DWARF debugging support in > current sezero builds? > > > > 2. Are there other builds of the 4.4.x tree we can use that have this > enabled? > > > > 3. Or alternately, Ozkan, can we convince you to turn this on for > your builds? :) > > > > Thanks, > > Aaron > > > > Hi, > > you are confusing dwarf-2 debug and EH, they are different animals. DW- > 2 > debug is already in use with -gdwarf-2, but DW2 EH on win64 don't work > at all. > > There have been work on SEH but its not in GCC yet.
Actually, no, I'm not confusing them, as I stated above: "I know the DWARF EH model is not supported, but from what I understand, the support for DWARF debugging information is independent of the EH model." Regardless, after further investigation, it appears that the dwarf-2 debugging is the default after all, but interestingly for our case -gstabs produces much smaller binaries (132MB versus 280MB). Which is contradictory to information I've read in other areas where dwarf is supposed to be much more efficient. I still believe there is a significant size discrepancy between mingw and linux here. I will gather more information to understand what is going on. Aaron ------------------------------------------------------------------------------ ThinkGeek and WIRED's GeekDad team up for the Ultimate GeekDad Father's Day Giveaway. ONE MASSIVE PRIZE to the lucky parental unit. See the prize list and enter to win: http://p.sf.net/sfu/thinkgeek-promo _______________________________________________ Mingw-w64-public mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/mingw-w64-public
