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grooveman
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PostPosted: Tue Sep 18, 2018 8:20 pm    Post subject: [Solved] Rust won't compile... doesn't find correct python Reply with quote

Hi.

I'm having trouble installing rust. I synced today, so everything is nice and fresh, and my system was consistent -- until I went to install firefox, which has a rust dependency.

The compile crunches along for about 30 minutes, then bombs-out like this:

Code:
-- Performing Test CXX_SUPPORTS_FFUNCTION_SECTIONS - Success
-- Performing Test C_SUPPORTS_FDATA_SECTIONS
-- Performing Test C_SUPPORTS_FDATA_SECTIONS - Success
-- Performing Test CXX_SUPPORTS_FDATA_SECTIONS
-- Performing Test CXX_SUPPORTS_FDATA_SECTIONS - Success
-- Found PythonInterp: /var/tmp/portage/dev-lang/rust-1.28.0-r1/temp/python3.6/bin/python2.7 (found version "1.4")
CMake Error at CMakeLists.txt:607 (message):
  Python 2.7 or newer is required


Of course I have 2.7 and 3.6 on mysystem:
Code:

# eselect python list
Available Python interpreters, in order of preference:
  [1]   python3.6
  [2]   python2.


My /etc/python-exec/python-exec.conf:
Code:
python3.6
python2.7

# emerge -pv rust

Code:

These are the packages that would be merged, in order:

Calculating dependencies... done!
[ebuild  N     ] dev-lang/rust-1.28.0-r1:stable/1.28::gentoo  USE="jemalloc -cargo -debug -doc -libressl -rls -rustfmt -wasm" ABI_X86="(64) -32 (-x32)" LLVM_TARGETS="(X86) -AArch64 -AMDGPU -ARM -BPF -Hexagon -Lanai -MSP430 -Mips -NVPTX -PowerPC -Sparc -SystemZ -XCore" 0 KiB
[ebuild  N     ] virtual/rust-1.28.0::gentoo  0 KiB
[ebuild  N     ] dev-util/cargo-0.29.0::gentoo  USE="-debug -doc -libressl" 0 KiB


My info:
Code:
# emerge --info
Portage 2.3.49 (python 3.6.5-final-0, default/linux/amd64/17.0/desktop/plasma, gcc-7.3.0, glibc-2.26-r7, 4.14.65-gentoo x86_64)
=================================================================
System uname: Linux-4.14.65-gentoo-x86_64-Intel-R-_Core-TM-_i7-3630QM_CPU_@_2.40GHz-with-gentoo-2.4.1
KiB Mem:    12187420 total,   3404348 free
KiB Swap:    7815164 total,   7815164 free
Timestamp of repository gentoo: Tue, 18 Sep 2018 11:30:01 +0000
Head commit of repository gentoo: 2fc120ddfc3a495f4c53d2d7354ecb1adfbe79d5
sh bash 4.4_p12
ld GNU ld (Gentoo 2.30 p2) 2.30.0
ccache version 3.3.4 [enabled]
app-shells/bash:          4.4_p12::gentoo
dev-java/java-config:     2.2.0-r4::gentoo
dev-lang/perl:            5.24.3-r1::gentoo
dev-lang/python:          2.7.15::gentoo, 3.6.5::gentoo
dev-util/ccache:          3.3.4-r1::gentoo
dev-util/cmake:           3.9.6::gentoo
dev-util/pkgconfig:       0.29.2::gentoo
sys-apps/baselayout:      2.4.1-r2::gentoo
sys-apps/openrc:          0.34.11::gentoo
sys-apps/sandbox:         2.13::gentoo
sys-devel/autoconf:       2.13::gentoo, 2.69-r4::gentoo
sys-devel/automake:       1.11.6-r3::gentoo, 1.13.4-r2::gentoo, 1.15.1-r2::gentoo
sys-devel/binutils:       2.30-r2::gentoo
sys-devel/gcc:            7.3.0-r3::gentoo
sys-devel/gcc-config:     1.8-r1::gentoo
sys-devel/libtool:        2.4.6-r3::gentoo
sys-devel/make:           4.2.1-r4::gentoo
sys-kernel/linux-headers: 4.13::gentoo (virtual/os-headers)
sys-libs/glibc:           2.26-r7::gentoo
Repositories:

gentoo
    location: /usr/portage
    sync-type: rsync
    sync-uri: rsync://rsync.gentoo.org/gentoo-portage
    priority: -1000
    sync-rsync-verify-max-age: 24
    sync-rsync-verify-metamanifest: yes
    sync-rsync-verify-jobs: 1
    sync-rsync-extra-opts:

ACCEPT_KEYWORDS="amd64"
ACCEPT_LICENSE="* @EULA"
CBUILD="x86_64-pc-linux-gnu"
CFLAGS="-march=corei7 -O2 -pipe"
CHOST="x86_64-pc-linux-gnu"
CONFIG_PROTECT="/etc /etc/stunnel/stunnel.conf /usr/lib64/libreoffice/program/sofficerc /usr/share/config /usr/share/gnupg/qualified.txt"
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="-march=corei7 -O2 -pipe"
DISTDIR="/usr/portage/distfiles"
ENV_UNSET="DBUS_SESSION_BUS_ADDRESS DISPLAY PERL5LIB PERL5OPT PERLPREFIX PERL_CORE PERL_MB_OPT PERL_MM_OPT XAUTHORITY XDG_CACHE_HOME XDG_CONFIG_HOME XDG_DATA_HOME XDG_RUNTIME_DIR"
FCFLAGS="-O2 -pipe"
FEATURES="assume-digests binpkg-logs buildpkg ccache config-protect-if-modified distlocks ebuild-locks fixlafiles merge-sync multilib-strict news parallel-fetch preserve-libs protect-owned sandbox sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch userpriv usersandbox usersync xattr"
FFLAGS="-O2 -pipe"
GENTOO_MIRRORS="http://lug.mtu.edu/gentoo/"
LANG="en_US.utf8"
LDFLAGS="-Wl,-O1 -Wl,--as-needed"
LINGUAS="en_US en"
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 --exclude=/.git"
PORTAGE_TMPDIR="/var/tmp"
USE="X a52 aac acl acpi activities alsa amd64 berkdb bluray branding browser-integration bzip2 cairo cdda cdr cli consolekit crypt cups cxx dbus declarative display-manager dri dts dvd dvdr emboss encode exif fam ffmpeg flac fortran fuse gdbm gif glamor gpm gtk iconv java jpeg kde kipi kwallet lcms ldap libnotify libtirpc mad mng modules mp3 mp4 mpeg multilib ncurses networkmanager nls nptl ogg opengl openmp pam pango pcre pdf phonon plasma png policykit ppds pulseaudio qml qt5 quicktime raw readline samba sdl seccomp semantic-desktop spell ssl startup-notification svg tcpd tiff truetype udev udisks unicode upower usb vorbis widgets wxwidgets x264 xattr xcb xcomposite xml xscreensaver xv xvid 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="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="karbon plan sheets stage words" COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog" CPU_FLAGS_X86="aes avx mmx mmxext popcnt sse sse2 sse3 sse4_1 sse4_2 ssse3" ELIBC="glibc" GPSD_PROTOCOLS="ashtech aivdm earthmate evermore fv18 garmin garmintxt gpsclock isync itrax mtk3301 nmea ntrip navcom oceanserver oldstyle oncore rtcm104v2 rtcm104v3 sirf skytraq superstar2 timing tsip tripmate tnt ublox ubx" INPUT_DEVICES="evdev synaptics" KERNEL="linux" L10N="en_US en" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LIBREOFFICE_EXTENSIONS="presenter-console presenter-minimizer" OFFICE_IMPLEMENTATION="libreoffice" PHP_TARGETS="php5-6 php7-0" POSTGRES_TARGETS="postgres9_5 postgres10" PYTHON_SINGLE_TARGET="python3_6" PYTHON_TARGETS="python2_7 python3_6" RUBY_TARGETS="ruby23" USERLAND="GNU" VIDEO_CARDS="nvidia intel vesa" 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, MAKEOPTS, PORTAGE_BINHOST, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS


Thanks.

G
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Last edited by grooveman on Tue Sep 18, 2018 9:00 pm; edited 1 time in total
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Anon-E-moose
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PostPosted: Tue Sep 18, 2018 8:34 pm    Post subject: Reply with quote

Probably because you have python3.6 set as primary and python single target
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grooveman
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PostPosted: Tue Sep 18, 2018 8:59 pm    Post subject: Reply with quote

Ok....

Sorry to be a bother, I got this working. It just needed one more reboot.
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fredbear5150
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PostPosted: Wed Sep 19, 2018 6:35 am    Post subject: Reply with quote

Anon-E-moose wrote:
Probably because you have python3.6 set as primary and python single target


Why is that a problem? It is exactly as stated here:

https://www.gentoo.org/support/news-items/2018-05-22-python3-6.html
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PostPosted: Wed Sep 19, 2018 10:42 am    Post subject: Reply with quote

fredbear5150 wrote:
Anon-E-moose wrote:
Probably because you have python3.6 set as primary and python single target


Why is that a problem? It is exactly as stated here:

https://www.gentoo.org/support/news-items/2018-05-22-python3-6.html


I don't know that it's wrong but when I see something like this
Quote:
/var/tmp/portage/dev-lang/rust-1.28.0-r1/temp/python3.6/bin/python2.7

it makes me think something isn't right and it might need a use flag set or there is a use flag set wrong.
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Asus m5a99fx, FX 8320 - nouveau & radeon, oss4
Acer laptop E5-575, i3-7100u - i965, alsa
---both---
4.14.62 kernel, profile 17.0 (no-pie) amd64-no-multilib
gcc 4.9.4 & 7.3.0, eudev, openrc, openbox, palemoon
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grooveman
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PostPosted: Wed Sep 19, 2018 9:11 pm    Post subject: Reply with quote

fredbear5150 wrote:
Anon-E-moose wrote:
Probably because you have python3.6 set as primary and python single target


Why is that a problem? It is exactly as stated here:

https://www.gentoo.org/support/news-items/2018-05-22-python3-6.html


Yes, in fact, that is where I got it from... but now I wonder if Anon-E-moose has a point... maybe it was supposed to be one or the other?

My system compiled though... no issues... so now I'm not sure!
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mikexx
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PostPosted: Thu Sep 20, 2018 1:51 pm    Post subject: Reply with quote

I have the same problem and a reboot has not fixed it. :)

I tried to set the python version for rust, but I still get this error.

Any ideas?

Best,
mike
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grooveman
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PostPosted: Thu Sep 20, 2018 1:55 pm    Post subject: Reply with quote

What are you getting from your:

Code:
eselect python list


?
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PostPosted: Fri Sep 21, 2018 7:22 am    Post subject: Reply with quote

Code:

[1]   python3.6
[2]   python2.7 (fallback)


I set the python version for rust to 2.7 by using https://wiki.gentoo.org/wiki/Project:Python/PYTHON_TARGETS


Best
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grooveman
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PostPosted: Fri Sep 21, 2018 1:21 pm    Post subject: Reply with quote

Hmm... I'm re-reading this:

https://www.gentoo.org/support/news-items/2018-05-22-python3-6.html

and now I'm thinking it isn't really necessary to have anything in your make.conf regarding python -- only if you want to force your system to use a particular python version. So, perhaps you could try just using PYTHON_SINGLE_TARGET="python2_7" for your rust install?

Since I don't have this error anymore, and the reboot fixed it for me, it is difficult for me to replicate for you.... but are you certain it is the same error? Portage thinks it is python-1.4?
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PostPosted: Fri Sep 21, 2018 1:44 pm    Post subject: Reply with quote

You could try setting
Code:
dev-lang/rust  python_targets_python2_7 python_single_target_python2_7

in /etc/portage/package.use

and see if that doesn't fix the problem.

edit to add: post the complete build log that shows the error (use pastebin, wgetpaste or similar)
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PostPosted: Fri Sep 21, 2018 2:51 pm    Post subject: Reply with quote

I've tried this and nothing changed.

It is the same error like the one in the first post.
The build log can be found here https://pastebin.com/84S8599i


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PostPosted: Fri Sep 21, 2018 3:16 pm    Post subject: Reply with quote

What does "emerge -pv rust" return (the whole output)
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grooveman
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PostPosted: Fri Sep 21, 2018 3:23 pm    Post subject: Reply with quote

Have you checked your use flags, make.conf, keywords, and package.use files for anything strange? If you do an "emerge -pv rust" what output do you get?

Is your @world otherwise consistent?

Can you remove firefox from your world (and anything else that depends upon rust). Do your deplcean, your @preserved build, your "revdep-rebuild -i", your etc-update... until everything is satisfied, reboot and then try to add firefox?

If you set up your /etc/python-exec/python-exec.conf and did your "eselect python set", and then executed all the above... then I'm afraid I'm out of ideas...
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PostPosted: Fri Sep 21, 2018 3:46 pm    Post subject: Reply with quote

Lets go another direction.

Change
Code:
dev-lang/rust  python_targets_python2_7 python_single_target_python2_7

to
Code:
dev-lang/rust  python_targets_python3_6 python_single_target_python3_6


Will it run now?

I think it's getting confused because you have 3.6 set as primary and many packages are compiled for it, but you're telling it to use 2.7.
I have both on my system but I have 3.6 shut off completely unless I specifically turn it on for certain packages.
I just downloaded rust and ran it to the point of config and it ran successfully.

OR

One other thing you might try is set python 2.7 primary by way of eselect (log out and back in) then see if it will compile.
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mikexx
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PostPosted: Mon Sep 24, 2018 6:25 am    Post subject: Reply with quote

grooveman wrote:
Have you checked your use flags, make.conf, keywords, and package.use files for anything strange? If you do an "emerge -pv rust" what output do you get?

Is your @world otherwise consistent?

Can you remove firefox from your world (and anything else that depends upon rust). Do your deplcean, your @preserved build, your "revdep-rebuild -i", your etc-update... until everything is satisfied, reboot and then try to add firefox?

If you set up your /etc/python-exec/python-exec.conf and did your "eselect python set", and then executed all the above... then I'm afraid I'm out of ideas...


My @world should be consistent.
I will try removing firefox etc this week.

@Anon-e-moose
This did not work either.
I haven't tried to change the python environment with eselect.


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mikexx
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PostPosted: Thu Sep 27, 2018 6:06 am    Post subject: Reply with quote

I added another use flag, that is not used by rust, nevertheless rust could be built. I do not understand that, but I don't care, the main thing is that it could be built. :)

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grooveman
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PostPosted: Fri Sep 28, 2018 4:53 pm    Post subject: Reply with quote

That's good news mike!

Just out of curiosity, what was the flag you added? Was it to make.conf, or to package.use for just rust?
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