Starting valgrind on any elf binary I get valgrind: Fatal error at startup: a function redirection valgrind: which is mandatory for this platform-tool combination valgrind: cannot be set up. Details of the redirection are: valgrind: valgrind: A must-be-redirected function valgrind: whose name matches the pattern: strlen valgrind: in an object with soname matching: ld-linux-x86-64.so.2 valgrind: was not found whilst processing valgrind: symbols from the object with soname: ld-linux-x86-64.so.2 valgrind: valgrind: Possible fix: add splitdebug to FEATURES in make.conf and remerge glibc. valgrind: valgrind: Cannot continue -- exiting now. Sorry. Sorry, I don't understand these messages. Reproducible: Always emerge --info Portage 2.2_rc33 (default/linux/amd64/2008.0/desktop, gcc-4.3.3, glibc-2.10.1-r0, 2.6.30-gentoo-r4 x86_64) ================================================================= System uname: Linux-2.6.30-gentoo-r4-x86_64-AMD_Phenom-tm-_II_X4_940_Processor-with-gentoo-2.0.1 Timestamp of tree: Thu, 30 Jul 2009 12:20:01 +0000 ccache version 2.4 [disabled] app-shells/bash: 4.0_p28 dev-java/java-config: 1.3.7-r1, 2.1.8-r1 dev-lang/python: 2.6.2-r1 dev-python/pycrypto: 2.0.1-r8 dev-util/ccache: 2.4-r8 dev-util/cmake: 2.6.4-r2 sys-apps/baselayout: 2.0.1 sys-apps/openrc: 0.4.3-r3 sys-apps/sandbox: 2.0 sys-devel/autoconf: 2.13, 2.63-r1 sys-devel/automake: 1.5, 1.6.3, 1.7.9-r1, 1.8.5-r3, 1.9.6-r2, 1.10.2, 1.11 sys-devel/binutils: 2.19.1-r1 sys-devel/gcc-config: 1.4.1 sys-devel/libtool: 2.2.6a virtual/os-headers: 2.6.30-r1 ACCEPT_KEYWORDS="amd64 ~amd64" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-mtune=native -O2 -pipe" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/kde/3.5/env /usr/kde/3.5/share/config /usr/kde/3.5/shutdown /usr/share/config" CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d /etc/env.d/java/ /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/php/apache2-php5/ext-active/ /etc/php/cgi-php5/ext-active/ /etc/php/cli-php5/ext-active/ /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo /etc/texmf/language.dat.d /etc/texmf/language.def.d /etc/texmf/updmap.d /etc/texmf/web2c /etc/udev/rules.d" CXXFLAGS="-mtune=native -O2 -pipe" DISTDIR="/usr/portage/distfiles" FEATURES="buildpkg distlocks fixpackages parallel-fetch preserve-libs protect-owned sandbox sfperms strict unmerge-orphans userfetch" GENTOO_MIRRORS="ftp://sunsite.informatik.rwth-aachen.de/pub/Linux/gentoo " LDFLAGS="-Wl,-O1" LINGUAS="en de" MAKEOPTS="-j4" PKGDIR="/usr/portage/packages" PORTAGE_CONFIGROOT="/" PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --compress --force --whole-file --delete --stats --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages" PORTAGE_TMPDIR="/var/tmp" PORTDIR="/usr/portage" PORTDIR_OVERLAY="/usr/local/portage /usr/local/portage/layman/java-overlay" SYNC="rsync://rsync.informatik.RWTH-Aachen.de/gentoo-portage" USE="3dnow 3dnowext 3dnowprefetch X acl acpi alsa amd64 atm avahi berkdb branding bzip2 cairo cdr cli cracklib crypt cups dbus dri dvd dvdr dvdread eds emboss encode esd evo fam ffmpeg fftw firefox fortran fuse gdbm gfortran gif gimp gnome gpm gstreamer gtk gtk2 hal iconv ipv6 isdnlog jpeg kde lapack lcms libnotify mad midi mikmod mmx mmxext mp3 mpeg mudflap multilib ncurses nls nptl nptlonly ogg opengl openmp pam pcre pdf perl png ppds pppd python qt qt3 qt3support qt4 quicktime readline reflection sdl session smp spell spl sqlite sqlite3 sse sse2 sse3 sse4a ssl startup-notification svg sysfs tcl tcpd threads tiff tk truetype unicode usb vorbis xml xorg xulrunner xv zlib" ALSA_CARDS="ali5451 als4000 atiixp atiixp-modem bt87x ca0106 cmipci emu10k1x ens1370 ens1371 es1938 es1968 fm801 hda-intel intel8x0 intel8x0m maestro3 trident usb-audio via82xx via82xx-modem ymfpci" ALSA_PCM_PLUGINS="adpcm alaw asym copy dmix dshare dsnoop empty extplug file hooks iec958 ioplug ladspa lfloat linear meter mmap_emul mulaw multi null plug rate route share shm softvol" APACHE2_MODULES="actions alias auth_basic authn_alias authn_anon authn_dbm authn_default authn_file authz_dbm authz_default authz_groupfile authz_host authz_owner authz_user autoindex cache dav dav_fs dav_lock deflate dir disk_cache env expires ext_filter file_cache filter headers include info log_config logio mem_cache mime mime_magic negotiation rewrite setenvif speling status unique_id userdir usertrack vhost_alias" ELIBC="glibc" INPUT_DEVICES="keyboard mouse evdev wacom" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LINGUAS="en de" USERLAND="GNU" VIDEO_CARDS="radeonhd radeon" Unset: CPPFLAGS, CTARGET, EMERGE_DEFAULT_OPTS, FFLAGS, INSTALL_MASK, LANG, LC_ALL, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS
With "man make.conf" you get documentation about the FEATURES macro and splitdebug.
(In reply to comment #1) > With "man make.conf" you get documentation about the FEATURES macro and > splitdebug. > Yes, thanks. Re-emering sys-libs/glibc with this feature enables debugging with the lastest version of valgrind. Can you explain a bit what this feature is about. If there are no negative side effects, why isn't it the default setting? Thanks, Helmut.
It produces files that don't contain debug info, but puts that info into debug files in /usr/lib/debug instead. I don't know if there's runtime overhead with this.
It puts files on your system that are only useful for people running valgrind or debugging glibc. I would not like to impose this on everybody. And as far as I know there is no run-time overhead, because the shared objects just have a reference to the file with debug info. Only debuggers and such will actually use this reference and read in the other file.
