(Split off from bug 559064 comment 13) dev-qt/qtwebengine will always call ninja without any parallel build options, which makes ninja default to the number of CPUs in a system. This is however too much for my Raspberry Pi 3, where this will fill up swap and cause the system to grind to a halt. Setting MAKEOPTS or NINJAOPTS via make.conf or /etc/portage/env has no effect whatsoever. Setting NINJAFLAGS per kensington on #gentoo-kde appears to be a possible workaround. # emerge --info Portage 2.2.26 (python 3.4.3-final-0, default/linux/arm64/13.0/desktop, gcc-4.9.3, glibc-2.22-r4, 4.6.3-raspberrypi3-arm64 aarch64) ================================================================= System uname: Linux-4.6.3-raspberrypi3-arm64-aarch64-with-gentoo-2.2 KiB Mem: 871684 total, 101892 free KiB Swap: 1084408 total, 1061608 free Timestamp of repository gentoo: Thu, 01 Sep 2016 00:45:01 +0000 sh bash 4.3_p42-r1 ld GNU ld (Gentoo 2.25.1 p1.1) 2.25.1 app-shells/bash: 4.3_p42-r1::gentoo dev-lang/perl: 5.20.2::gentoo dev-lang/python: 2.7.10-r1::gentoo, 3.4.3-r1::gentoo dev-util/cmake: 3.3.1-r1::gentoo dev-util/pkgconfig: 0.28-r2::gentoo sys-apps/baselayout: 2.2::gentoo sys-apps/openrc: 0.19.1::gentoo sys-apps/sandbox: 2.10-r1::gentoo sys-devel/autoconf: 2.13::gentoo, 2.69::gentoo sys-devel/automake: 1.14.1::gentoo, 1.15::gentoo sys-devel/binutils: 2.25.1-r1::gentoo sys-devel/gcc: 4.9.3::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: 4.3::gentoo (virtual/os-headers) sys-libs/glibc: 2.22-r4::gentoo Repositories: gentoo location: /usr/portage sync-type: rsync sync-uri: rsync://rsync.gentoo.org/gentoo-portage priority: -1000 ACCEPT_KEYWORDS="arm64" ACCEPT_LICENSE="* -@EULA" CBUILD="aarch64-unknown-linux-gnu" CFLAGS="-O2 -pipe -march=armv8-a+crc -mtune=cortex-a53" CHOST="aarch64-unknown-linux-gnu" CONFIG_PROTECT="/etc /usr/share/config" CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/dconf /etc/env.d /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo" CXXFLAGS="-O2 -pipe -march=armv8-a+crc -mtune=cortex-a53" DISTDIR="/var/cache/portage/distfiles" FCFLAGS="-O2" FEATURES="assume-digests binpkg-logs config-protect-if-modified distlocks ebuild-locks fixlafiles merge-sync news parallel-fetch preserve-libs protect-owned sandbox sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch userpriv usersandbox usersync xattr" FFLAGS="-O2" GENTOO_MIRRORS="http://ftp.spline.de/mirrors/gentoo/" LANG="de_DE.UTF-8" LDFLAGS="-Wl,-O1 -Wl,--as-needed" MAKEOPTS="-j4" PKGDIR="/var/cache/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="X a52 aac acl acpi alsa arm64 berkdb bluetooth branding bzip2 cairo cdda cdr cli consolekit cracklib crypt cups cxx dbus dri dts dvdr emboss encode exif fam firefox flac fortran gdbm gif glamor gpm gtk iconv ipv6 jpeg lcms libnotify mad mng modules mp3 mp4 mpeg multilib ncurses nls nptl ogg opengl openmp pam pango pcre pdf png policykit ppds qt3support qt5 readline seccomp session spell ssl startup-notification svg tcpd tiff truetype udev udisks unicode upower usb vorbis wxwidgets xattr xcb xml xv xvid zlib" APACHE2_MODULES="authn_core authz_core socache_shmcb unixd 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 cgi cgid dav dav_fs dav_lock deflate 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 unique_id userdir usertrack vhost_alias" 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" 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="libinput" KERNEL="linux" L10N="de en" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LIBREOFFICE_EXTENSIONS="presenter-console presenter-minimizer" LINGUAS="de_DE" OFFICE_IMPLEMENTATION="libreoffice" PHP_TARGETS="php5-6" PYTHON_SINGLE_TARGET="python2_7" PYTHON_TARGETS="python2_7 python3_4" RUBY_TARGETS="ruby20 ruby21" USERLAND="GNU" VIDEO_CARDS="fbdev" 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: CC, CPPFLAGS, CTARGET, CXX, EMERGE_DEFAULT_OPTS, INSTALL_MASK, LC_ALL, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS, USE_PYTHON
MAKEOPTS needs munging before being passed to NINJAOPTS - we cannot assign it verbatim. Bug #590920 comment #2 suggests introducing a new eclass, instead of duplicating the login in cmake-utils. Thoughts?
(In reply to Michael Palimaka (kensington) from comment #1) > Bug #590920 comment #2 suggests introducing a new eclass, instead of > duplicating the login in cmake-utils. Thoughts? Sounds sensible to me. Note that multiprocessing.eclass also has makeopts_jobs() and makeopts_loadavg() functions to extract those values from MAKEOPTS.
NINJAFLAGS="-j1" ?
Has there been any progress? This bug is affecting all systems with low memory.
(In reply to Thomas Jürges from comment #4) There is a new ninja-utils eclass which has been committed last week. Porting qtwebengine ebuild to it would presumably solve the problem. Until then, set NINJAFLAGS as a workaround per comment 0 and comment 3.
I can confirm that setting the environment variable NINJAFLAGS alleviates the issue. Cheers T.
(In reply to Chí-Thanh Christopher Nguyễn from comment #5) > (In reply to Thomas Jürges from comment #4) > There is a new ninja-utils eclass which has been committed last week. > Porting qtwebengine ebuild to it would presumably solve the problem. The ebuild doesn't call ninja directly, it's wrapped by a qmake-based build system. So we can't use the eninja eclass function.
I pushed a fix to the overlay for testing: https://gitweb.gentoo.org/proj/qt.git/commit/?id=3210bde4818f62d3acef982a1311f1ba2be8a020 If someone is able to confirm that this approach works, I'll land it in main tree too.
I used the wrong variable name. Fixed commit: https://gitweb.gentoo.org/proj/qt.git/commit/?id=522bef331aed4670a4c97d635d6d9fe8df0bb31e
Thanks, fixed in git. https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=90f45d0172ad22d6b8a6e77025499156b704dcc9
(In reply to Michael Palimaka (kensington) from comment #8) > I pushed a fix to the overlay for testing: > > https://gitweb.gentoo.org/proj/qt.git/commit/ > ?id=3210bde4818f62d3acef982a1311f1ba2be8a020 > > If someone is able to confirm that this approach works, I'll land it in main > tree too. what if someone wants to use custom NINJAFLAGS?
(In reply to Jan Chren (rindeal) from comment #11) > what if someone wants to use custom NINJAFLAGS? Good point.
(In reply to Jan Chren (rindeal) from comment #11) I suggest: export NINJAFLAGS="${NINJAFLAGS:--j$(makeopts_jobs) -l$(makeopts_loadavg "${MAKEOPTS}" 0) -v}"
Thanks for the feedback, fixed in git. https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=b755bd568ec2b8ef058aaade242c59fa09beb1e9 https://gitweb.gentoo.org/proj/qt.git/commit/?id=65de2d8d8ee98a1dbe2eca72e741f183e342aeaa