It works fine if I export WANT_AUTOCONF=2.5 inside src_unpack(). Also, DEPEND=">=sys-devel/autoconf-2.58" should be added. Reproducible: Always Steps to Reproduce: 1. emerge =media-libs/sdl-mixer-1.2.5-r1 2. 3. Actual Results: FATAL ERROR: Autoconf version 2.50 or higher is required for this script Expected Results: build sdl-mixer Portage 2.0.51.22-r1 (default-linux/x86/2005.0, gcc-3.4.3, glibc-2.3.5-r0, 2.6.11-0417 i686) ================================================================= System uname: 2.6.11-0417 i686 AMD Athlon(tm) XP 2000+ Gentoo Base System version 1.6.12 distcc 2.18.3 i586-pc-linux-gnu (protocols 1 and 2) (default port 3632) [disabled] ccache version 2.4 [disabled] dev-lang/python: 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="i586-pc-linux-gnu" CFLAGS="-Os -march=i586 -pipe -fomit-frame-pointer" CHOST="i586-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/kde/2/share/config /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 /usr/share/texmf/dvipdfm/config/ /usr/share/texmf/dvips/config/ /usr/share/texmf/tex/generic/config/ /usr/share/texmf/tex/platex/config/ /usr/share/texmf/xdvi/ /var/bind /var/qmail/control" CONFIG_PROTECT_MASK="/etc/gconf /etc/terminfo /etc/env.d" CXXFLAGS="-Os -march=i586 -pipe -fomit-frame-pointer" DISTDIR="/usr/portage/distfiles" FEATURES="autoconfig buildpkg distlocks installwatch sandbox sfperms strict userpriv usersandbox" GENTOO_MIRRORS="ftp:///ftp-stud.fht-esslingen.de/pub/Mirrors/gentoo/ http://gentoo.binarycompass.org http://gentoo.osuosl.org/ http://gentoo.ccccom.com" LANG="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="x86 3dnow X Xaw3d aalib accessibility acl acpi adns aim alsa apache2 apm arts audiofile avi bidi bonobo bzlib calendar caps cdr cpdflib crypt cups curl curlwrappers dbase dga dvb dvd dvdr eds elibc_glibc emboss encode esd ethereal evo exif fakeroot fam fbcon filepro flash foomaticdb freetds ftp gb gd gdbm ggi gif ginac gmp gphoto2 gpm gstreamer gtk gtk2 iconv icq imagemagick imap imlib innodb iodbc ipv6 java joystick jpeg junit kde kerberos kernel_linux krb4 ladcca lcms ldap leim lesstif libg++ libgda libwww ltsp mad mcal memlimit mikmod mime ming mmx mng motif mp3 mpeg mpi msn mssql mule mysql mysqli nas ncurses netboot netcdf nls nptl nptlonly odbc offensive ogg oggvorbis opengl oscar oss pam pcmcia pda pdflib perl png pnp portaudio posix postgres ppds prelude python qt quicktime readline samba sasl scanner sdl slang slp sndfile snmp speex spell sqlite sse ssl svg tcltk tcpd theora tidy tiff truetype truetype-fonts trusted type1-fonts unicode usb userland_GNU vhosts vorbis wavelan wifi wmf wxwindows xface xine xinerama xml xml2 xmlrpc xmms xosd xpm xprint xsl xv xvid yahoo yaz zeo zlib" Unset: ASFLAGS, CTARGET, LC_ALL, LDFLAGS, LINGUAS
1.2.6 moved to stable
