When attempting to build a perl module using 'g-cpan -i Module::Name' it unpacks the sources, then when compiling the source claims 'no Make or Build file detected', and continues without error but also without building or installing anything! An example 'g-cpan -i Net::DNS::Resolver::Programmable' >>> Unpacking source... >>> Unpacking Net-DNS-Resolver-Programmable-v0.003.tar.gz to /var/tmp/portage/perl-gcpan/Net-DNS-Resolver-Programmable-0.003/work >>> Source unpacked. >>> Compiling source in /var/tmp/portage/perl-gcpan/Net-DNS-Resolver-Programmable-0.003 ... * No Make or Build file detected... >>> Source compiled. >>> Test phase [not enabled]: perl-gcpan/Net-DNS-Resolver-Programmable-0.003 >>> Install Net-DNS-Resolver-Programmable-0.003 into /var/tmp/portage/perl-gcpan/Net-DNS-Resolver-Programmable-0.003/image/ category perl-gcpan * Cleaning out stray man files >>> Completed installing Net-DNS-Resolver-Programmable-0.003 into /var/tmp/portage/perl-gcpan/Net-DNS-Resolver-Programmable-0.003/image/ * Man pages are not installed for most modules now. * Please use perldoc instead. After running ebuild unpack newton Net-DNS-Resolver-Programmable-v0.003 # ls Build.PL CHANGES debian INSTALL lib LICENSE Makefile.PL MANIFEST META.yml README SIGNATURE TODO Which shows that there is indeed a Makefile.PL The same happens with any other modules I try to install from CPAN using g-cpan. emerge --info Portage 2.1.3_rc9 (default-linux/x86/2007.0/desktop, gcc-4.2.0, glibc-2.6-r0, 2.6.22-gentoo-r2 i686) ================================================================= System uname: 2.6.22-gentoo-r2 i686 Intel(R) Pentium(R) 4 CPU 3.20GHz Gentoo Base System release 1.12.10 Timestamp of tree: Sun, 29 Jul 2007 14:50:01 +0000 dev-java/java-config: 1.3.7, 2.0.33-r1 dev-lang/python: 2.4.4-r4 dev-python/pycrypto: 2.0.1-r6 sys-apps/sandbox: 1.2.18.1 sys-devel/autoconf: 2.13, 2.61-r1 sys-devel/automake: 1.4_p6, 1.5, 1.6.3, 1.7.9-r1, 1.8.5-r3, 1.9.6-r2, 1.10 sys-devel/binutils: 2.17-r1 sys-devel/gcc-config: 1.3.16 sys-devel/libtool: 1.5.24 virtual/os-headers: 2.6.22-r2 ACCEPT_KEYWORDS="x86 ~x86" AUTOCLEAN="yes" CBUILD="i686-pc-linux-gnu" CFLAGS="-O2 -march=native -mtune=native -pipe -ggdb" CHOST="i686-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/kde/3.5/env /usr/kde/3.5/share/config /usr/kde/3.5/shutdown /usr/share/X11/xkb /usr/share/config /var/bind" CONFIG_PROTECT_MASK="/etc/env.d /etc/env.d/java/ /etc/gconf /etc/revdep-rebuild /etc/terminfo /etc/texmf/web2c" CXXFLAGS="-O2 -march=native -mtune=native -pipe -ggdb" DISTDIR="/usr/portage/distfiles" FEATURES="distlocks installsources metadata-transfer parallel-fetch sandbox sfperms splitdebug strict unmerge-orphans" GENTOO_MIRRORS="http://linux.rz.ruhr-uni-bochum.de/download/gentoo-mirror/ http://gentoo.blueyonder.co.uk http://gentoo.tiscali.nl/ http://gentoo.mirror.solnet.ch http://pandemonium.tiscali.de/pub/gentoo/" LANG="en_GB.UTF-8" LC_ALL="en_GB.UTF-8" LINGUAS="en_GB en" MAKEOPTS="-j3" PKGDIR="/usr/portage/packages" PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --compress --force --whole-file --delete --delete-after --stats --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages --filter=H_**/files/digest-*" PORTAGE_TMPDIR="/var/tmp" PORTDIR="/usr/portage" PORTDIR_OVERLAY="/usr/portage/local/layman/musicbrainz /usr/portage/local/layman/emacs /usr/portage/local/layman/sunrise /usr/local/portage" SYNC="rsync://rsync.europe.gentoo.org/gentoo-portage" USE="X a52 aac aalib acl acpi aim alsa apache2 arts audiofile avi bash-completion berkdb bitmap-fonts bluetooth bonobo browserplugin bzip2 bzlib cairo caps cddb cdparanoia cdr cjk cli cracklib crypt cups curl dbus directfb doc dri dts dvd dvdr dvdread eds emacs emboss encode esd ethereal evo examples exif expat fam fbcon ffmpeg firefox flac foomaticdb fortran ftp gcj gd gdbm gif glut gmp gnome gnutls gphoto2 gpm graphviz gstreamer gtk gtk2 gtkhtml guile hal iconv icq idn ieee1394 imagemagick imlib ipv6 isdnlog jabber jack java javascript jbig jce jpeg jpeg2k junit kde kdehiddenvisibility ladspa lcms leim libg++ libgda libnotify libsamplerate lm_sensors logrotate lua mad matroska mbox midi mikmod milter mime mmap mmx mng mono mp3 mpeg mpi mplayer msn mudflap musepack ncurses nls nptl nptlonly nsplugin odbc offensive ogg oggvorbis openal opengl openmp oscar oss pam pcntl pcre pdf perl png postgres ppds pppd profile pulseaudio python qt3 qt3support qt4 quicktime readline recode reflection ruby sdl seamonkey session sharedmem sndfile snmp sockets sox speex spell spl sqlite3 sse sse2 ssl svg sysvipc tcl tcltk tcpd tetex theora threads tiff tk truetype truetype-fonts type1-fonts uicktime unicode usb v4l vim-syntax vorbis win32codecs wmf wxwindows x264 x86 xface xine xml xml2 xorg xulrunner xv xvid yahoo zlib" ALSA_CARDS="hda-intel" ALSA_PCM_PLUGINS="adpcm alaw asym copy dmix dshare dsnoop empty extplug file hooks iec958 ioplug ladspa lfloat linear meter mulaw multi null plug rate route share shm softvol" CAMERAS="canon" ELIBC="glibc" INPUT_DEVICES="keyboard mouse evdev" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LINGUAS="en_GB en" USERLAND="GNU" VIDEO_CARDS="radeon vesa fbdev" Unset: CTARGET, EMERGE_DEFAULT_OPTS, INSTALL_MASK, LDFLAGS, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS
I have now found the problem. I had previously used g-cpan to install Bundle::CPAN and that installed something incompatible with g-cpan. Having removed all of these packages, g-cpan works again.