When emerging app-emulation/qemu-0.14.0, if there are no targets specified in QEMU_SOFTMMU_TARGETS or QEMU_USER_TARGETS, then the compiling process will hang right at the start, after this output: >>> Compiling source in /var/tmp/portage/app-emulation/qemu-0.14.0/work/qemu-0.14.0 ... make -j16 GEN config-all-devices.mak If some targets are specified in make.conf, this does not occur. Upon inspecting `ps aux', the reason for this is because the command being executed becomes this: /bin/sh -c echo " GEN config-all-devices.mak" && cat | grep =y | sort -u > config-all-devices.mak Notice how there's two spaces between `cat' and `|'. `cat' is waiting for stdin as there are no files specified, because there were no targets specified. Sending ^D to cat continues the emerge successfully (with no targets, of course). There are probably numerous ways to solve this, but if qemu isn't useful without any targets compiled in, I'd suggest modifying the ebuild to throw an error and quit if there are no targets specified, thus preventing this case from ever occurring. Of course, if there are use cases for compiling qemu without any targets, then this is not a good solution. Reproducible: Always Steps to Reproduce: 1. make sure that QEMU_SOFTMMU_TARGETS and QEMU_USER_TARGETS have no targets (this is the default for someone who hasn't emerged qemu before!) 2. emerge qemu Actual Results: Emerge hangs at GEN config-all-devices.mak Expected Results: Emerge continues to completion. Portage 2.2.0_alpha51 (default/linux/amd64/10.0, gcc-4.5.3, glibc-2.14-r0, 3.0.3-gentoo x86_64) ================================================================= System uname: Linux-3.0.3-gentoo-x86_64-Intel-R-_Core-TM-2_Quad_CPU_Q9650_@_3.00GHz-with-gentoo-2.0.3 Timestamp of tree: Sat, 27 Aug 2011 12:15:01 +0000 app-shells/bash: 4.2_p10 dev-java/java-config: 2.1.11-r3 dev-lang/python: 2.7.2-r2, 3.2-r2 dev-util/cmake: 2.8.5-r2 dev-util/pkgconfig: 0.26 sys-apps/baselayout: 2.0.3 sys-apps/openrc: 0.8.3-r1 sys-apps/sandbox: 2.5 sys-devel/autoconf: 2.68 sys-devel/automake: 1.4_p6-r1, 1.11.1-r1 sys-devel/binutils: 2.21.1-r1 sys-devel/gcc: 4.5.3-r1 sys-devel/gcc-config: 1.4.1-r1 sys-devel/libtool: 2.4-r1 sys-devel/make: 3.82-r1 sys-kernel/linux-headers: 2.6.39 (virtual/os-headers) sys-libs/glibc: 2.14 Repositories: gentoo location: /usr/portage sync: rsync://rsync.au.gentoo.org/gentoo-portage priority: -1000 local location: /usr/local/portage masters: gentoo priority: 0 oss-overlay location: /var/lib/layman/oss-overlay masters: gentoo priority: 1 Installed sets: ABI="amd64" ACCEPT_KEYWORDS="amd64 ~*" ACCEPT_LICENSE="*" ACCEPT_PROPERTIES="*" ALSA_CARDS="" ALSA_PCM_PLUGINS="" ANT_HOME="/usr/share/ant" APACHE2_MODULES="" ARCH="amd64" ASFLAGS_x86="--32" AUTOCLEAN="yes" CALLIGRA_FEATURES="" CAMERAS="" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-march=native -O2 -pipe" CFLAGS_x86="-m32" CHOST="x86_64-pc-linux-gnu" CHOST_amd64="x86_64-pc-linux-gnu" CHOST_x86="i686-pc-linux-gnu" CLEAN_DELAY="5" COLLECTD_PLUGINS="" COLLISION_IGNORE="/lib/modules" CONFIG_PROTECT="/etc /usr/share/gnupg/qualified.txt" 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-php5.3/ext-active/ /etc/php/cgi-php5.3/ext-active/ /etc/php/cli-php5.3/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" CXXFLAGS="-march=native -O2 -pipe" DEFAULT_ABI="amd64" DISPLAY=":0" DISTDIR="/usr/portage/distfiles" ELIBC="glibc" EMERGE_WARNING_DELAY="10" EPREFIX="" EROOT="/" FCFLAGS="" FEATURES="assume-digests binpkg-logs distlocks ebuild-locks fixlafiles fixpackages news parallel-fetch preserve-libs protect-owned sandbox sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch" FETCHCOMMAND="/usr/bin/wget -t 3 -T 60 --passive-ftp -O "${DISTDIR}/${FILE}" "${URI}"" FETCHCOMMAND_RSYNC="rsync -avP "${URI}" "${DISTDIR}/${FILE}"" FETCHCOMMAND_SFTP="bash -c "x=\${2#sftp://} ; host=\${x%%/*} ; port=\${host##*:} ; host=\${host%:*} ; [[ \${host} = \${port} ]] && port=22 ; exec sftp -P \${port} \"\${host}:/\${x#*/}\" \"\$1\"" sftp "${DISTDIR}/${FILE}" "${URI}"" FETCHCOMMAND_SSH="bash -c "x=\${2#ssh://} ; host=\${x%%/*} ; port=\${host##*:} ; host=\${host%:*} ; [[ \${host} = \${port} ]] && port=22 ; exec rsync --rsh=\"ssh -p\${port}\" -avP \"\${host}:/\${x#*/}\" \"\$1\"" rsync "${DISTDIR}/${FILE}" "${URI}"" FFLAGS="" GCC_SPECS="" GDK_USE_XFT="1" GENTOO_MIRRORS="http://mirror.aarnet.edu.au/pub/gentoo" GPSD_PROTOCOLS="" GRUB_PLATFORMS="" GSETTINGS_BACKEND="gconf" GUILE_LOAD_PATH="/usr/share/guile/1.8" HG="/usr/bin/hg" HOME="/root" INFOPATH="/usr/share/info:/usr/share/binutils-data/x86_64-pc-linux-gnu/2.21.1/info:/usr/share/gcc-data/x86_64-pc-linux-gnu/4.5.3/info" INPUT_DEVICES="evdev keyboard mouse" KERNEL="linux" LANG="en_AU.UTF-8" LCD_DEVICES="" LDFLAGS="-Wl,-O1 -Wl,--as-needed" LDFLAGS_x86="-m elf_i386" LESS="-R -M --shift 5" LESSOPEN="|lesspipe %s" LIBDIR_amd64="lib64" LIBDIR_amd64_fbsd="lib64" LIBDIR_ppc="lib32" LIBDIR_ppc64="lib64" LIBDIR_s390="lib32" LIBDIR_s390x="lib64" LIBDIR_sparc32="lib32" LIBDIR_sparc64="lib64" LIBDIR_x86="lib32" LIBDIR_x86_fbsd="lib32" LOGNAME="root" LS_COLORS="rs=0:di=01;34:ln=01;36:mh=00:pi=40;33:so=01;35:do=01;35:bd=40;33;01:cd=40;33;01:or=01;05;37;41:mi=01;05;37;41:su=37;41:sg=30;43:ca=30;41:tw=30;42:ow=34;42:st=37;44:ex=01;32:*.tar=01;31:*.tgz=01;31:*.arj=01;31:*.taz=01;31:*.lzh=01;31:*.lzma=01;31:*.tlz=01;31:*.txz=01;31:*.zip=01;31:*.z=01;31:*.Z=01;31:*.dz=01;31:*.gz=01;31:*.lz=01;31:*.xz=01;31:*.bz2=01;31:*.bz=01;31:*.tbz=01;31:*.tbz2=01;31:*.tz=01;31:*.deb=01;31:*.rpm=01;31:*.jar=01;31:*.war=01;31:*.ear=01;31:*.sar=01;31:*.rar=01;31:*.ace=01;31:*.zoo=01;31:*.cpio=01;31:*.7z=01;31:*.rz=01;31:*.jpg=01;35:*.jpeg=01;35:*.gif=01;35:*.bmp=01;35:*.pbm=01;35:*.pgm=01;35:*.ppm=01;35:*.tga=01;35:*.xbm=01;35:*.xpm=01;35:*.tif=01;35:*.tiff=01;35:*.png=01;35:*.svg=01;35:*.svgz=01;35:*.mng=01;35:*.pcx=01;35:*.mov=01;35:*.mpg=01;35:*.mpeg=01;35:*.m2v=01;35:*.mkv=01;35:*.ogm=01;35:*.mp4=01;35:*.m4v=01;35:*.mp4v=01;35:*.vob=01;35:*.qt=01;35:*.nuv=01;35:*.wmv=01;35:*.asf=01;35:*.rm=01;35:*.rmvb=01;35:*.flc=01;35:*.avi=01;35:*.fli=01;35:*.flv=01;35:*.gl=01;35:*.dl=01;35:*.xcf=01;35:*.xwd=01;35:*.yuv=01;35:*.cgm=01;35:*.emf=01;35:*.axv=01;35:*.anx=01;35:*.ogv=01;35:*.ogx=01;35:*.pdf=00;32:*.ps=00;32:*.txt=00;32:*.patch=00;32:*.diff=00;32:*.log=00;32:*.tex=00;32:*.doc=00;32:*.aac=00;36:*.au=00;36:*.flac=00;36:*.mid=00;36:*.midi=00;36:*.mka=00;36:*.mp3=00;36:*.mpc=00;36:*.ogg=00;36:*.ra=00;36:*.wav=00;36:*.axa=00;36:*.oga=00;36:*.spx=00;36:*.xspf=00;36:" MAIL="/var/mail/root" MAKEOPTS="-j16" MANPATH="/usr/local/share/man:/usr/share/man:/usr/share/binutils-data/x86_64-pc-linux-gnu/2.21.1/man:/usr/share/gcc-data/x86_64-pc-linux-gnu/4.5.3/man:/etc/java-config/system-vm/man/:/usr/lib64/php5.3/man/" MULTILIB_ABIS="amd64 x86" MULTILIB_STRICT_DENY="64-bit.*shared object" MULTILIB_STRICT_DIRS="/lib32 /lib /usr/lib32 /usr/lib /usr/kde/*/lib32 /usr/kde/*/lib /usr/qt/*/lib32 /usr/qt/*/lib /usr/X11R6/lib32 /usr/X11R6/lib" MULTILIB_STRICT_EXEMPT="(perl5|gcc|gcc-lib|binutils|eclipse-3|debug|portage|udev)" NETBEANS="apisupport cnd groovy gsf harness ide identity j2ee java mobility nb php profiler soa visualweb webcommon websvccommon xml" NOCOLOR="true" OPENGL_PROFILE="nvidia" PATH="/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin:/opt/bin" PHP_TARGETS="" PKGDIR="/usr/portage/packages" PORTAGE_ARCHLIST="ppc sparc64-freebsd ppc-openbsd x86-openbsd ppc64 x86-winnt x86-fbsd ppc-aix alpha arm x86-freebsd s390 amd64 arm-linux x86-macos x64-openbsd ia64-hpux hppa x86-netbsd x86-cygwin amd64-linux ia64-linux x86 sparc-solaris x64-freebsd sparc64-solaris x86-linux x64-macos sparc m68k-mint ia64 mips ppc-macos x86-interix hppa-hpux amd64-fbsd x64-solaris mips-irix m68k sh x86-solaris sparc-fbsd" PORTAGE_BINHOST_CHUNKSIZE="3000" PORTAGE_BIN_PATH="/usr/lib64/portage/bin" PORTAGE_COMPRESS_EXCLUDE_SUFFIXES="css gif htm[l]? jp[e]?g js pdf png" PORTAGE_CONFIGROOT="/" PORTAGE_DEBUG="0" PORTAGE_DEPCACHEDIR="/var/cache/edb/dep" PORTAGE_ELOG_CLASSES="log warn error" PORTAGE_ELOG_MAILFROM="portage@localhost" PORTAGE_ELOG_MAILSUBJECT="[portage] ebuild log for ${PACKAGE} on ${HOST}" PORTAGE_ELOG_MAILURI="root" PORTAGE_ELOG_SYSTEM="save_summary echo" PORTAGE_FETCH_CHECKSUM_TRY_MIRRORS="5" PORTAGE_FETCH_RESUME_MIN_SIZE="350K" PORTAGE_GID="250" PORTAGE_GPG_SIGNING_COMMAND="gpg --sign --clearsign --yes --default-key "${PORTAGE_GPG_KEY}" --homedir "${PORTAGE_GPG_DIR}" "${FILE}"" PORTAGE_INST_GID="0" PORTAGE_INST_UID="0" PORTAGE_PYM_PATH="/usr/lib64/portage/pym" PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --compress --force --whole-file --delete --stats --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages" PORTAGE_RSYNC_RETRIES="-1" PORTAGE_SANDBOX_COMPAT_LEVEL="22" PORTAGE_SYNC_STALE="30" PORTAGE_TMPDIR="/var/tmp" PORTAGE_VERBOSE="1" PORTAGE_WORKDIR_MODE="0700" PORTDIR="/usr/portage" PORTDIR_OVERLAY="/usr/local/portage /var/lib/layman/oss-overlay" PROFILE_ONLY_VARIABLES="ARCH ELIBC KERNEL USERLAND" PYTHONDONTWRITEBYTECODE="1" RESUMECOMMAND="/usr/bin/wget -c -t 3 -T 60 --passive-ftp -O "${DISTDIR}/${FILE}" "${URI}"" RESUMECOMMAND_RSYNC="rsync -avP "${URI}" "${DISTDIR}/${FILE}"" RESUMECOMMAND_SSH="bash -c "x=\${2#ssh://} ; host=\${x%%/*} ; port=\${host##*:} ; host=\${host%:*} ; [[ \${host} = \${port} ]] && port=22 ; exec rsync --rsh=\"ssh -p\${port}\" -avP \"\${host}:/\${x#*/}\" \"\$1\"" rsync "${DISTDIR}/${FILE}" "${URI}"" ROOT="/" ROOTPATH="/opt/bin:/usr/x86_64-pc-linux-gnu/gcc-bin/4.5.3" RPMDIR="/usr/portage/rpm" RUBY_TARGETS="" SHELL="/bin/bash" STAGE1_USE="multilib nptl nptlonly unicode" SUDO_COMMAND="/usr/bin/emerge -av --info" SUDO_GID="1000" SUDO_UID="1000" SUDO_USER="delan" SYMLINK_LIB="yes" SYNC="rsync://rsync.au.gentoo.org/gentoo-portage" TERM="xterm" USE="X amd64 ipv6 jpeg mmx multilib nls opengl oss oss4 pam png sse sse2 ssl threads truetype unicode vdpau xorg xv zlib" ELIBC="glibc" INPUT_DEVICES="evdev keyboard mouse" KERNEL="linux" QEMU_SOFTMMU_TARGETS="i386 x86_64" USERLAND="GNU" USER="root" USERLAND="GNU" USERNAME="root" USE_EXPAND="ALSA_CARDS ALSA_PCM_PLUGINS APACHE2_MODULES APACHE2_MPMS CALLIGRA_FEATURES CAMERAS COLLECTD_PLUGINS CROSSCOMPILE_OPTS DRACUT_MODULES DVB_CARDS ELIBC FCDSL_CARDS FOO2ZJS_DEVICES FRITZCAPI_CARDS GPSD_PROTOCOLS GRUB_PLATFORMS INPUT_DEVICES KERNEL LCD_DEVICES LINGUAS LIRC_DEVICES MISDN_CARDS NETBEANS_MODULES NGINX_MODULES_HTTP NGINX_MODULES_MAIL OFED_DRIVERS PHP_TARGETS QEMU_SOFTMMU_TARGETS QEMU_USER_TARGETS RUBY_TARGETS SANE_BACKENDS USERLAND VIDEO_CARDS XFCE_PLUGINS XTABLES_ADDONS" USE_EXPAND_HIDDEN="CROSSCOMPILE_OPTS ELIBC KERNEL USERLAND" USE_ORDER="env:pkg:conf:defaults:pkginternal:repo:env.d" VIDEO_CARDS="" XAUTHORITY="/home/delan/.Xauthority" XDG_CONFIG_DIRS="/etc/xdg" XDG_DATA_DIRS="/usr/local/share:/usr/share" XTABLES_ADDONS=""
This is fixed in newer version in the tree.
