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Bug 783693 - dev-util/bcc-0.19.0 - Unable to find clang libraries
Summary: dev-util/bcc-0.19.0 - Unable to find clang libraries
Status: CONFIRMED
Alias: None
Product: Gentoo Linux
Classification: Unclassified
Component: Current packages (show other bugs)
Hardware: All Linux
: Normal normal (vote)
Assignee: Zac Medico
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2021-04-18 08:48 UTC by Toralf Förster
Modified: 2021-04-27 19:02 UTC (History)
2 users (show)

See Also:
Package list:
Runtime testing required: ---


Attachments
emerge-info.txt (emerge-info.txt,17.51 KB, text/plain)
2021-04-18 08:48 UTC, Toralf Förster
Details
CMakeOutput.log (CMakeOutput.log,48.39 KB, text/plain)
2021-04-18 08:48 UTC, Toralf Förster
Details
dev-util:bcc-0.19.0:20210418-034311.log (dev-util:bcc-0.19.0:20210418-034311.log,4.13 KB, text/plain)
2021-04-18 08:48 UTC, Toralf Förster
Details
emerge-history.txt (emerge-history.txt,143.29 KB, text/plain)
2021-04-18 08:48 UTC, Toralf Förster
Details
environment (environment,165.94 KB, text/plain)
2021-04-18 08:48 UTC, Toralf Förster
Details
etc.portage.tar.bz2 (etc.portage.tar.bz2,14.45 KB, application/x-bzip)
2021-04-18 08:48 UTC, Toralf Förster
Details
logs.tar.bz2 (logs.tar.bz2,4.84 KB, application/x-bzip)
2021-04-18 08:48 UTC, Toralf Förster
Details
temp.tar.bz2 (temp.tar.bz2,36.57 KB, application/x-bzip)
2021-04-18 08:48 UTC, Toralf Förster
Details

Note You need to log in before you can comment on or make changes to this bug.
Description Toralf Förster gentoo-dev 2021-04-18 08:48:06 UTC
-- Performing Test ELF_GETSHDRSTRNDX - Success
CMake Error at CMakeLists.txt:89 (message):
  Unable to find clang libraries


-- Configuring incomplete, errors occurred!

  -------------------------------------------------------------------

  This is an unstable amd64 chroot image at a tinderbox (==build bot)
  name: 17.1_desktop_systemd-20210414-031624

  -------------------------------------------------------------------

gcc-config -l:
 [1] x86_64-pc-linux-gnu-7.3.1
 [2] x86_64-pc-linux-gnu-8.3.1
 [3] x86_64-pc-linux-gnu-10.3.0 *
clang version 12.0.0
Target: x86_64-pc-linux-gnu
Thread model: posix
InstalledDir: /usr/lib/llvm/12/bin
/usr/lib/llvm/12
12.0.0
Python 3.8.9
Available Ruby profiles:
  [1]   ruby26 (with Rubygems)
  [2]   ruby30 (with Rubygems) *
Available Rust versions:
  [1]   rust-1.51.0 *
The following VMs are available for generation-2:
*)	AdoptOpenJDK 8.282_p08 [openjdk-bin-8]
Available Java Virtual Machines:
  [1]   openjdk-bin-8  system-vm

The Glorious Glasgow Haskell Compilation System, version 8.10.4

  timestamp(s) of HEAD at this tinderbox image:
/var/db/repos/gentoo	Sat Apr 17 23:05:23 UTC 2021

emerge -qpvO dev-util/bcc
[ebuild  N    ] dev-util/bcc-0.19.0  USE="lua -test" LUA_SINGLE_TARGET="luajit" PYTHON_TARGETS="python3_8 -python3_7 -python3_9"
Comment 1 Toralf Förster gentoo-dev 2021-04-18 08:48:07 UTC
Created attachment 700500 [details]
emerge-info.txt
Comment 2 Toralf Förster gentoo-dev 2021-04-18 08:48:08 UTC
Created attachment 700503 [details]
CMakeOutput.log
Comment 3 Toralf Förster gentoo-dev 2021-04-18 08:48:09 UTC
Created attachment 700506 [details]
dev-util:bcc-0.19.0:20210418-034311.log
Comment 4 Toralf Förster gentoo-dev 2021-04-18 08:48:11 UTC
Created attachment 700509 [details]
emerge-history.txt
Comment 5 Toralf Förster gentoo-dev 2021-04-18 08:48:12 UTC
Created attachment 700512 [details]
environment
Comment 6 Toralf Förster gentoo-dev 2021-04-18 08:48:14 UTC
Created attachment 700515 [details]
etc.portage.tar.bz2
Comment 7 Toralf Förster gentoo-dev 2021-04-18 08:48:15 UTC
Created attachment 700518 [details]
logs.tar.bz2
Comment 8 Toralf Förster gentoo-dev 2021-04-18 08:48:16 UTC
Created attachment 700521 [details]
temp.tar.bz2
Comment 9 Holger Hoffstätte 2021-04-27 18:34:45 UTC
bcc is one of the packages that simply don't build with clang-12 yet because
libclangBasic and others were removed and aggregated into libclang-cpp
(so that consumers only link against one lib, not many, and constantly break).
See: https://fedoraproject.org/wiki/Changes/Stop-Shipping-Individual-Component-Libraries-In-clang-lib-Package
Comment 10 Holger Hoffstätte 2021-04-27 19:02:26 UTC
(In reply to Holger Hoffstätte from comment #9)
> bcc is one of the packages that simply don't build with clang-12 yet because
> libclangBasic and others were removed and aggregated into libclang-cpp
> (so that consumers only link against one lib, not many, and constantly
> break).
> See:
> https://fedoraproject.org/wiki/Changes/Stop-Shipping-Individual-Component-
> Libraries-In-clang-lib-Package

Actually that already seems to be the case with bcc commit e46997e9a4 where
they added fallbacks and try to find libclang-ccp, yay.

It seems the real problem is in the ebuild because it allows
<=sys-devel/clang-13:= but then sets LLVM_MAX_SLOT=11.
This seems to confuse everyone involved esp. when both 11 and 12 are
installed.

Since I hacked my mesa ebuild to allow llvm:12 (works fine) and no
longer have llvm/clang:11 installed, I bumped LLVM_MAX_SLOT to 12 and
can now build all of libbpf/bcc/bpftrace without problems or further
changes.