There's a command-line switch that prevents dosbox 0.63 compilation with gcc 3.4.4, on x86. As far as I know, it is not an experimental switch. Shortest example: CXXFLAGS="-O2 -fsched2-use-traces" emerge dosbox => internal compiler error while compiling core_full.cpp Wacky variation on the theme (can probably be simplified a lot): CFLAGS="-pipe -O3 -march=pentium-m -mfpmath=sse,387 -maccumulate-outgoing-args -mno-align-stringops -fomit-frame-pointer -ffast-math -funroll-all-loops -fsched-spec-load -ftracer -fmove-all-movables -fsched2-use-superblocks -fsched2-use-traces" emerge dosbox => In core_dyn_x86.cpp: {standard input}: Assembler messages: {standard input}:19072: Error: symbol `run_return_adress' is already defined Workaround: As soon as the -fsched2-use-traces flag is removed, everything compiles fine. So maybe it should be filtered with flag-o-matic ?
Hi, I can confirm it, with this emerge --info: Portage 2.0.51.22-r1 (default-linux/x86/2005.0, gcc-3.4.4, glibc-2.3.5-r0, 2.6.11-gentoo-r9 i686) ================================================================= System uname: 2.6.11-gentoo-r9 i686 AMD Athlon(tm) XP 2000+ Gentoo Base System version 1.6.12 ccache version 2.4 [enabled] dev-lang/python: 2.2.3-r5, 2.3.5 sys-apps/sandbox: 1.2.8 sys-devel/autoconf: 2.13, 2.59-r6 sys-devel/automake: 1.4_p6, 1.5, 1.6.3, 1.7.9-r1, 1.8.5-r3, 1.9.5 sys-devel/binutils: 2.16-r1 sys-devel/libtool: 1.5.18 virtual/os-headers: 2.6.11-r1 ACCEPT_KEYWORDS="x86 ~x86" AUTOCLEAN="yes" CBUILD="i686-pc-linux-gnu" CFLAGS="-march=athlon-xp -O2 -mmmx -m3dnow -msse -mfpmath=sse -ftracer -frename-registers -fweb -fomit-frame-pointer -Wdisabled-optimization -pipe" CHOST="i686-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/kde/2/share/config /usr/kde/3.2/share/config /usr/kde/3.3/env /usr/kde/3.3/share/config /usr/kde/3.3/shutdown /usr/kde/3.4/env /usr/kde/3.4/share/config /usr/kde/3.4/shutdown /usr/kde/3/share/config /usr/lib/X11/xkb /usr/lib/mozilla/defaults/pref /usr/share/config /var/qmail/control" CONFIG_PROTECT_MASK="/etc/gconf /etc/terminfo /etc/env.d" CXXFLAGS="-march=athlon-xp -O2 -mmmx -m3dnow -msse -mfpmath=sse -ftracer -frename-registers -fweb -fomit-frame-pointer -Wdisabled-optimization -pipe" DISTDIR="/usr/portage/distfiles" FEATURES="autoconfig candy ccache distlocks notitles sandbox sfperms strict" GENTOO_MIRRORS="ftp://ftp.tu-clausthal.de/pub/linux/gentoo http://gentoo.oregonstate.edu http://www.ibiblio.org/pub/Linux/distributions/gentoo" LC_ALL="de_DE@euro" LINGUAS="de" PKGDIR="/usr/portage/packages" PORTAGE_TMPDIR="/var/tmp" PORTDIR="/usr/portage" PORTDIR_OVERLAY="/usr/local/portage" SYNC="rsync://rsync.europe.gentoo.org/gentoo-portage" USE="x86 16bit 3dnow 3dnowext 3ds S3TC X a52 aac aalib acpi alsa arts audiofile avi bash-completion berkdb bitmap-fonts bluetooth bzip2 bzlib cairo caps cdparanoia cdr cpudetection crypt css ctype curl dio divx4linux dnd dpms dvd dvdr dvdread editor emacs-w3 emboss encode exif expat fame fb fbcon ffmpeg fftw flac fortran freetype ftp gcc-libffi gd gdbm gif gimp glitz gnokii graphviz gs gtk gtk2 icq imagemagick imlib ipv6 irmc jack jack-tmpfs java javascript joystick jp2 jpeg jpeg2k kde kdeenablefinal ladcca lesstif libg++ libwww lzw mad maildir mikmod mjpeg mmx mng monkey motif mp3 mpeg mplayer mule music mysql ncurses nls no-htdocs no-old-linux noamazon noantlr nobcel nobeanutils nobsf nobsh nocardbus nocd nocommonslogging nocommonsnet nojdepend nojsch nojython nolog4j nooro nosendmail nowin nptl nvidia objc offensive ogg oggvorbis openal opengl pam pdflib perl physfs pic png posix python qemu-fast qt quicktime readline real samba scanner sdl server sharedmem slang sms snmp speex spell sqlite sse ssl stencil-buffer svg tcltk tcpd theora threads tiff timidity transcode truetype truetype-fonts type1-fonts unicode usb userlocales v4l v4l2 vanilla vcd videos vidix visualization vorbis win32codecs xanim xemacs xine xinerama xml2 xmlrpc xmms xosd xpm xrandr xscreensaver xv xvid xvmc yv12 zlib zvbi linguas_de userland_GNU kernel_linux elibc_glibc" Unset: ASFLAGS, CTARGET, LANG, LDFLAGS, MAKEOPTS it builds, but as soon as -fsched2-use-traces is added, gcc bombs out: Making all in core_dyn_x86 make[4]: Entering directory `/var/tmp/portage/dosbox-0.63/work/dosbox-0.63/src/cpu/core_dyn_x86' make[4]: F
Hi, I can confirm it, with this emerge --info: Portage 2.0.51.22-r1 (default-linux/x86/2005.0, gcc-3.4.4, glibc-2.3.5-r0, 2.6.11-gentoo-r9 i686) ================================================================= System uname: 2.6.11-gentoo-r9 i686 AMD Athlon(tm) XP 2000+ Gentoo Base System version 1.6.12 ccache version 2.4 [enabled] dev-lang/python: 2.2.3-r5, 2.3.5 sys-apps/sandbox: 1.2.8 sys-devel/autoconf: 2.13, 2.59-r6 sys-devel/automake: 1.4_p6, 1.5, 1.6.3, 1.7.9-r1, 1.8.5-r3, 1.9.5 sys-devel/binutils: 2.16-r1 sys-devel/libtool: 1.5.18 virtual/os-headers: 2.6.11-r1 ACCEPT_KEYWORDS="x86 ~x86" AUTOCLEAN="yes" CBUILD="i686-pc-linux-gnu" CFLAGS="-march=athlon-xp -O2 -mmmx -m3dnow -msse -mfpmath=sse -ftracer -frename-registers -fweb -fomit-frame-pointer -Wdisabled-optimization -pipe" CHOST="i686-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/kde/2/share/config /usr/kde/3.2/share/config /usr/kde/3.3/env /usr/kde/3.3/share/config /usr/kde/3.3/shutdown /usr/kde/3.4/env /usr/kde/3.4/share/config /usr/kde/3.4/shutdown /usr/kde/3/share/config /usr/lib/X11/xkb /usr/lib/mozilla/defaults/pref /usr/share/config /var/qmail/control" CONFIG_PROTECT_MASK="/etc/gconf /etc/terminfo /etc/env.d" CXXFLAGS="-march=athlon-xp -O2 -mmmx -m3dnow -msse -mfpmath=sse -ftracer -frename-registers -fweb -fomit-frame-pointer -Wdisabled-optimization -pipe" DISTDIR="/usr/portage/distfiles" FEATURES="autoconfig candy ccache distlocks notitles sandbox sfperms strict" GENTOO_MIRRORS="ftp://ftp.tu-clausthal.de/pub/linux/gentoo http://gentoo.oregonstate.edu http://www.ibiblio.org/pub/Linux/distributions/gentoo" LC_ALL="de_DE@euro" LINGUAS="de" PKGDIR="/usr/portage/packages" PORTAGE_TMPDIR="/var/tmp" PORTDIR="/usr/portage" PORTDIR_OVERLAY="/usr/local/portage" SYNC="rsync://rsync.europe.gentoo.org/gentoo-portage" USE="x86 16bit 3dnow 3dnowext 3ds S3TC X a52 aac aalib acpi alsa arts audiofile avi bash-completion berkdb bitmap-fonts bluetooth bzip2 bzlib cairo caps cdparanoia cdr cpudetection crypt css ctype curl dio divx4linux dnd dpms dvd dvdr dvdread editor emacs-w3 emboss encode exif expat fame fb fbcon ffmpeg fftw flac fortran freetype ftp gcc-libffi gd gdbm gif gimp glitz gnokii graphviz gs gtk gtk2 icq imagemagick imlib ipv6 irmc jack jack-tmpfs java javascript joystick jp2 jpeg jpeg2k kde kdeenablefinal ladcca lesstif libg++ libwww lzw mad maildir mikmod mjpeg mmx mng monkey motif mp3 mpeg mplayer mule music mysql ncurses nls no-htdocs no-old-linux noamazon noantlr nobcel nobeanutils nobsf nobsh nocardbus nocd nocommonslogging nocommonsnet nojdepend nojsch nojython nolog4j nooro nosendmail nowin nptl nvidia objc offensive ogg oggvorbis openal opengl pam pdflib perl physfs pic png posix python qemu-fast qt quicktime readline real samba scanner sdl server sharedmem slang sms snmp speex spell sqlite sse ssl stencil-buffer svg tcltk tcpd theora threads tiff timidity transcode truetype truetype-fonts type1-fonts unicode usb userlocales v4l v4l2 vanilla vcd videos vidix visualization vorbis win32codecs xanim xemacs xine xinerama xml2 xmlrpc xmms xosd xpm xrandr xscreensaver xv xvid xvmc yv12 zlib zvbi linguas_de userland_GNU kernel_linux elibc_glibc" Unset: ASFLAGS, CTARGET, LANG, LDFLAGS, MAKEOPTS it builds, but as soon as -fsched2-use-traces is added, gcc bombs out: Making all in core_dyn_x86 make[4]: Entering directory `/var/tmp/portage/dosbox-0.63/work/dosbox-0.63/src/cpu/core_dyn_x86' make[4]: Für das Ziel »all« ist nichts zu tun. make[4]: Leaving directory `/var/tmp/portage/dosbox-0.63/work/dosbox-0.63/src/cpu/core_dyn_x86' make[4]: Entering directory `/var/tmp/portage/dosbox-0.63/work/dosbox-0.63/src/cpu' i686-pc-linux-gnu-g++ -DHAVE_CONFIG_H -I. -I. -I../.. -I../../include -I/usr/include/SDL -D_REENTRANT -march=athlon-xp -O2 -mmmx -m3dnow -msse -fsched2-use-traces -mfpmath=sse -ftracer -frename-registers -fweb -fomit-frame-pointer -Wdisabled-optimization -pipe -c -o callback.o callback.cpp i686-pc-linux-gnu-g++ -DHAVE_CONFIG_H -I. -I. -I../.. -I../../include -I/usr/include/SDL -D_REENTRANT -march=athlon-xp -O2 -mmmx -m3dnow -msse -fsched2-use-traces -mfpmath=sse -ftracer -frename-registers -fweb -fomit-frame-pointer -Wdisabled-optimization -pipe -c -o cpu.o cpu.cpp cpu.cpp: In function `void CPU_CycleIncrease()': cpu.cpp:1307: interner Compiler-Fehler: in convert_regs_1, bei reg-stack.c:2820 Please submit a full bug report, with preprocessed source if appropriate. See <URL:http://bugs.gentoo.org/> for instructions. Preprocessed source stored into /var/tmp/portage/dosbox-0.63/temp/ccZ6l5OW.out file, please attach this to your bugreport. (I would, but each time I try I get an 'empty file' error.)
sounds more like a gcc bug to me. Moving to toolchain.
At first I hesitated to open this bug (seemed unimportant).. but now I'd be glad if it can help improving gcc :-) Also it seems, even when compilation completes, there might be a problem. Has anyone got the Lotus III game ? Depending on CFLAGS, I'm getting a complete crash of dosbox upon startup of this game. And other games work fine, regardless of CFLAGS. I'm trying to narrow down the Lotus III problem (I hope it's closely related to this bug).
glad you found the flag
Ok, after some effort I've just found what makes Lotus III fail in dosbox: --- runs ok with: --- CXXFLAGS="-O2 -march=pentium-m -mfpmath=sse" emerge dosbox --- fails with: --- CXXFLAGS="-O2 -march=pentium-m -mfpmath=sse,387" emerge dosbox Hope this helps ;-)
