I know this seems to be a duplicate of bug #36023 , but I can't resolve the issue the way that bug seems to be fixed. I tried with mod_perl 1.99.11 and 2.0.1-r2, but both give the same results. # emerge --info Portage 2.0.54 (default-linux/amd64/2005.1, gcc-3.4.4, glibc-2.3.5-r2, 2.6.15-gentoo-r3 x86_64) ================================================================= System uname: 2.6.15-gentoo-r3 x86_64 AMD Athlon(tm) 64 Processor 3500+ Gentoo Base System version 1.6.14 dev-lang/python: 2.3.5-r2, 2.4.2 sys-apps/sandbox: 1.2.12 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, 1.9.6-r1 sys-devel/binutils: 2.16.1 sys-devel/libtool: 1.5.22 virtual/os-headers: 2.6.11-r2 ACCEPT_KEYWORDS="amd64" AUTOCLEAN="yes" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-O3 -march=athlon64 -pipe -fomit-frame-pointer" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/kde/2/share/config /usr/kde/3/share/config /usr/share/config /var/bind /var/qmail/control" CONFIG_PROTECT_MASK="/etc/gconf /etc/terminfo /etc/env.d" CXXFLAGS="-O3 -march=athlon64 -pipe -fomit-frame-pointer" DISTDIR="/usr/portage/distfiles" FEATURES="autoconfig ccache distlocks sandbox sfperms strict" GENTOO_MIRRORS="http://gentoo.inf.elte.hu/" LC_ALL="en_US.UTF-8" MAKEOPTS="-j2" PKGDIR="/usr/portage/packages" PORTAGE_TMPDIR="/var/tmp" PORTDIR="/usr/portage" PORTDIR_OVERLAY="/usr/local/portage" SYNC="rsync://rsync.gentoo.org/gentoo-portage" USE="amd64 alsa apache2 avi bash-completion berkdb bitmap-fonts bzip2 cgi cjk crypt cups curl eds emboss encode enscript expat fastcgi foomaticdb fortran gd gif gpm gstreamer gtk2 imagemagick imap imlib ipv6 ithreads jpeg libwww lm_sensors lzw lzw-tiff mad maildir mhash mp3 mpeg mysql ncurses nls ogg opengl pam pam-mysql pcre pdflib perl php pic png pop3d postfix postgres python quicktime readline recode sasl sdl silvercity snmp spell ssl tcpd threads tiff tools truetype truetype-fonts type1-fonts udev unicode usb userlocales utf8 vhosts vorbis xml xml2 xv yp zlib userland_GNU kernel_linux elibc_glibc" Unset: ASFLAGS, CTARGET, LANG, LDFLAGS, LINGUAS
what were the USE flags used when compiling libperl, perl, and mod_perl?
you're right, though I re-emerged perl with the USE flag ithreads (as mentioned in bug #36023), I didn't do the same with libperl. re-emerging libperl with USE="ithreads" solves the issue.
