Cmake 3 depends on libarchive 3, but the ebuild only requires 2.8. Reproducible: Always Steps to Reproduce: 1. Have libarchive 2.* installed because you haven't updated in a while. 2. Try to install cmake. 3. Watch it fail with -- Could NOT find LibArchive: Found unsuitable version "2.8.4", but required is at least "3.0.0" (found /usr/lib64/libarchive.so) CMake Error at CMakeLists.txt:341 (message): CMAKE_USE_SYSTEM_LIBARCHIVE is ON but LibArchive is not found! Call Stack (most recent call first): CMakeLists.txt:525 (CMAKE_BUILD_UTILITIES) Portage 2.2.18 (python 2.7.9-final-0, hardened/linux/amd64, gcc-4.4.5, glibc-2.15-r3, 2.6.18-194.3.1.el5.028stab069.6 x86_64) ================================================================= System uname: Linux-2.6.18-194.3.1.el5.028stab069.6-x86_64-Intel-R-_Xeon-R-_CPU_E5530_@_2.40GHz-with-gentoo-2.2 KiB Mem: 524288 total, 412636 free KiB Swap: 0 total, 0 free Timestamp of repository gentoo: Tue, 30 Jun 2015 08:15:01 +0000 sh bash 4.3_p33-r2 ld GNU ld (Gentoo 2.24 p1.4) 2.24 app-shells/bash: 4.3_p33-r2::gentoo dev-lang/perl: 5.20.2::gentoo dev-lang/python: 2.6.6-r2::gentoo, 2.7.9-r1::gentoo, 3.1.3-r1::gentoo, 3.2.3-r2::gentoo, 3.3.5-r1::gentoo dev-util/cmake: 2.8.4-r1::gentoo sys-apps/baselayout: 2.2::gentoo sys-apps/openrc: 0.17::gentoo sys-apps/sandbox: 2.6-r1::gentoo sys-devel/autoconf: 2.69::gentoo sys-devel/automake: 1.11.1::gentoo, 1.12.6::gentoo, 1.14.1::gentoo sys-devel/binutils: 2.24-r3::gentoo sys-devel/gcc: 4.3.4::gentoo, 4.4.5::gentoo, 4.6.3::gentoo sys-devel/gcc-config: 1.7.3::gentoo sys-devel/libtool: 2.4.6::gentoo sys-devel/make: 4.1-r1::gentoo sys-kernel/linux-headers: 3.18::gentoo (virtual/os-headers) sys-libs/glibc: 2.15-r3::gentoo Repositories: gentoo location: /usr/portage sync-type: rsync sync-uri: rsync://rsync.europe.gentoo.org/gentoo-portage priority: -1000 ACCEPT_KEYWORDS="amd64" ACCEPT_LICENSE="* -@EULA" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-march=native -O2 -pipe" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/share/gnupg/qualified.txt /usr/share/openvpn/easy-rsa /var/bind" CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d /etc/eselect/postgresql /etc/gconf /etc/gentoo-release /etc/php/apache2-php5.2/ext-active/ /etc/php/cgi-php5.2/ext-active/ /etc/php/cli-php5.2/ext-active/ /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo" CXXFLAGS="-march=native -O2 -pipe" DISTDIR="/usr/portage/distfiles" FCFLAGS="-O2 -pipe" FEATURES="assume-digests binpkg-logs collision-protect config-protect-if-modified distlocks ebuild-locks fixlafiles merge-sync news parallel-fetch parallel-install preserve-libs protect-owned sandbox sfperms splitdebug strict unknown-features-warn unmerge-logs unmerge-orphans userfetch userpriv usersandbox usersync xattr" FFLAGS="-O2 -pipe" GENTOO_MIRRORS="ftp://mirror.mdfnet.se/gentoo ftp://ftp.df.lth.se/pub/gentoo/ rsync://ftp.df.lth.se/pub/gentoo/" LANG="sv_SE.UTF-8" LDFLAGS="-Wl,-O1 -Wl,--as-needed" MAKEOPTS="-j1" PKGDIR="/usr/portage/packages" PORTAGE_CONFIGROOT="/" PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --omit-dir-times --compress --force --whole-file --delete --stats --human-readable --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages" PORTAGE_TMPDIR="/var/tmp" USE="acl amd64 bash-completion bzip2 cli cracklib crypt cxx dri gdbm hardened iconv imap ipv6 justify libwww maildir mmx mmxext modules multilib mysql ncurses nls nptl openmp pam pax_kernel pcre pie readline sasl session sse sse2 ssl ssp symlink tcpd unicode urandom vim-syntax xattr xtpax zlib" ABI_X86="64" 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" 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 digest 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 userdir usertrack vhost_alias auth_digest" APACHE2_MPMS="prefork" CALLIGRA_FEATURES="kexi words flow plan sheets stage tables krita karbon braindump author" CAMERAS="ptp2" COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog" CPU_FLAGS_X86="mmx mmxext sse sse2" ELIBC="glibc" GPSD_PROTOCOLS="ashtech aivdm earthmate evermore fv18 garmin garmintxt gpsclock itrax mtk3301 nmea ntrip navcom oceanserver oldstyle oncore rtcm104v2 rtcm104v3 sirf superstar2 timing tsip tripmate tnt ublox ubx" INPUT_DEVICES="keyboard mouse evdev" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LIBREOFFICE_EXTENSIONS="presenter-console presenter-minimizer" OFFICE_IMPLEMENTATION="libreoffice" PHP_TARGETS="php5-5" PYTHON_SINGLE_TARGET="python2_7" PYTHON_TARGETS="python2_7 python3_3" RUBY_TARGETS="ruby19 ruby20" USERLAND="GNU" VIDEO_CARDS="fbdev glint intel mach64 mga nouveau nv r128 radeon savage sis tdfx trident vesa via vmware dummy v4l" XTABLES_ADDONS="quota2 psd pknock lscan length2 ipv4options ipset ipp2p iface geoip fuzzy condition tee tarpit sysrq steal rawnat logmark ipmark dhcpmac delude chaos account" Unset: CPPFLAGS, CTARGET, EMERGE_DEFAULT_OPTS, INSTALL_MASK, LC_ALL, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS, USE_PYTHON
Last libarchive-2 is removed 3 years. General policy is to allow upgrading from 1 year old installation. https://sources.gentoo.org/cgi-bin/viewvc.cgi/gentoo-x86/app-arch/libarchive/?hideattic=0
