There appears to be an issue  with build zeus based meta-clang under zeus 
platform...

I followed steps off meta-clang page, and from the work I did with meta-clang 
under "Rocko" about a year ago, a lot has changed under the hood...

Working under zeus 3.0.4... EXT SDK appears fully functional, I require 
CLANG/LLVM for future development...

Never seen this error before, did I miss a patch or possibly a step ?

Clean build area...

(1) Add meta-clang to bblayers.conf

(2) Added EXT SDK Settings for meta-clang :

SDKIMAGE_FEATURES_append = " staticdev-pkgs"

SDK_EXTRA_TOOLS = "  \
    nativesdk-cmake \
    nativesdk-clang \    <---Only appears to download/build llvm when present
    "

TOOLCHAIN_HOST_TASK_append = "${SDK_EXTRA_TOOLS}"

The build is much slower due to "native-clang-9.0.1-r0 do_compile"...


EXT SDK build error seen:
=========================

10:12 smonsees@yix490038 
/disk0/scratch/smonsees/yocto/workspace_3/builds2/sbcb-default> bitbake 
sbcb-defaultfs-full -c populate_sdk_ext
Parsing recipes: 100% 
|#################################################################################|
 Time: 0:01:25
Parsing of 2463 .bb files complete (0 cached, 2463 parsed). 3671 targets, 91 
skipped, 0 masked, 0 errors.
NOTE: Resolving any missing task queue dependencies

Build Configuration:
BB_VERSION           = "1.44.0"
BUILD_SYS            = "x86_64-linux"
NATIVELSBSTRING      = "rhel-7.9"
TARGET_SYS           = "x86_64-poky-linux"
MACHINE              = "sbcb-default"
DISTRO               = "limws"
DISTRO_VERSION       = "3.0.4"
TUNE_FEATURES        = "m64 corei7"
TARGET_FPU           = ""
meta                 
meta-poky            = "my_yocto_3.0.4:f2eb22a8783f1eecf99bd4042695bab920eed00e"
meta-perl
meta-python
meta-filesystems     
meta-networking
meta-initramfs       
meta-oe              = "zeus:2b5dd1eb81cd08bc065bc76125f2856e9383e98b"
meta-clang           = "zeus:f5355ca9b86fb5de5930132ffd95a9b352d694f9"
meta                 = "master:a32ddd2b2a51b26c011fa50e441df39304651503"
meta-intel           = "zeus:d9942d4c3a710406b051852de7232db03c297f4e"
meta-intel           = "v2019.02:f635a364c55f1fb12519aff54924a0a5b947091e"

NOTE: Fetching uninative binary shim from 
file:///ede/tms/yocto/zeus/downloads/intel/x86_64-nativesdk-libc.tar.xz;sha256sum=a09922172c3a439105e0ae6b943daad2d83505b17da0aba97961ff433b8c21ab
Initialising tasks: 100% 
|##############################################################################|
 Time: 0:00:12
Checking sstate mirror object availability: 100% 
|######################################################| Time: 0:00:00
Sstate summary: Wanted 2490 Found 2157 Missed 333 Current 0 (86% match, 0% 
complete)
NOTE: Executing Tasks
NOTE: Setscene tasks completed
ERROR: sbcb-defaultfs-full-1.0-r0 do_sdk_depends: Error executing a python 
function in exec_python_func() autogenerated:

The stack trace of python calls that resulted in this exception/failure was:
File: 'exec_python_func() autogenerated', lineno: 2, function: <module>
     0001:
 *** 0002:extend_recipe_sysroot(d)
     0003:
File: 
'/disk0/scratch/smonsees/yocto/workspace_3/poky/meta/classes/staging.bbclass', 
lineno: 551, function: extend_recipe_sysroot
     0547:                    dest = newmanifest[l]
     0548:                    if l.endswith("/"):
     0549:                        staging_copydir(l, targetdir, dest, seendirs)
     0550:                        continue
 *** 0551:                    staging_copyfile(l, targetdir, dest, postinsts, 
seendirs)
     0552:
     0553:    bb.note("Installed into sysroot: %s" % str(msg_adding))
     0554:    bb.note("Skipping as already exists in sysroot: %s" % 
str(msg_exists))
     0555:
File: 
'/disk0/scratch/smonsees/yocto/workspace_3/poky/meta/classes/staging.bbclass', 
lineno: 144, function: staging_copyfile
     0140:    if os.path.islink(c):
     0141:        linkto = os.readlink(c)
     0142:        if os.path.lexists(dest):
     0143:            if not os.path.islink(dest):
 *** 0144:                raise OSError(errno.EEXIST, "Link %s already exists 
as a file" % dest, dest)
     0145:            if os.readlink(dest) == linkto:
     0146:                return dest
     0147:            raise OSError(errno.EEXIST, "Link %s already exists to a 
different location? (%s vs %s)" % (dest, os.readlink(dest), linkto), dest)
     0148:        os.symlink(linkto, dest)
Exception: FileExistsError: [Errno 17] Link 
/disk0/scratch/smonsees/yocto/workspace_3/builds2/sbcb-default/tmp/work/sbcb_default-poky-linux/sbcb-defaultfs-full/1.0-r0/recipe-sysroot/lib
 already exists as a file: 
'/disk0/scratch/smonsees/yocto/workspace_3/builds2/sbcb-default/tmp/work/sbcb_default-poky-linux/sbcb-defaultfs-full/1.0-r0/recipe-sysroot/lib'

ERROR: Logfile of failure stored in: 
/disk0/scratch/smonsees/yocto/workspace_3/builds2/sbcb-default/tmp/work/sbcb_default-poky-linux/sbcb-defaultfs-full/1.0-r0/temp/log.do_sdk_depends.24732
ERROR: Task 
(/disk0/scratch/smonsees/yocto/workspace_3/poky/../meta-bae/meta-limws/meta-intel/recipes-core/images/sbcb-defaultfs-full.bb:do_sdk_depends)
 failed with exit code '1'
NOTE: Tasks Summary: Attempted 6892 tasks of which 5539 didn't need to be rerun 
and 1 failed.

Summary: 1 task failed:
  
/disk0/scratch/smonsees/yocto/workspace_3/poky/../meta-bae/meta-limws/meta-intel/recipes-core/images/sbcb-defaultfs-full.bb:do_sdk_depends
Summary: There was 1 ERROR message shown, returning a non-zero exit code.
13:01 smonsees@yix490038 
/disk0/scratch/smonsees/yocto/workspace_3/builds2/sbcb-default>



Note: Modifying SDK_EXTRA_TOOLS by removing "nativesdk-clang", i.e.:

SDK_EXTRA_TOOLS = "  \
    nativesdk-cmake \
    "

If I remove, the build is much faster, and it builds without the error, also 
appears not to require/include 
"llvm" component in build.
I do not believe the full package was actually built/enabled, but no errors and 
image is functional.


13:09 smonsees@yix490038 
/disk0/scratch/smonsees/yocto/workspace_3/builds2/sbcb-default> bitbake 
sbcb-defaultfs-full -c populate_sdk_ext
Parsing recipes: 100% 
|#################################################################################|
 Time: 0:01:26
Parsing of 2463 .bb files complete (0 cached, 2463 parsed). 3671 targets, 91 
skipped, 0 masked, 0 errors.
NOTE: Resolving any missing task queue dependencies

Build Configuration:
BB_VERSION           = "1.44.0"
BUILD_SYS            = "x86_64-linux"
NATIVELSBSTRING      = "rhel-7.9"
TARGET_SYS           = "x86_64-poky-linux"
MACHINE              = "sbcb-default"
DISTRO               = "limws"
DISTRO_VERSION       = "3.0.4"
TUNE_FEATURES        = "m64 corei7"
TARGET_FPU           = ""
meta                 
meta-poky            = "my_yocto_3.0.4:f2eb22a8783f1eecf99bd4042695bab920eed00e"
meta-perl
meta-python
meta-filesystems     
meta-networking
meta-initramfs       
meta-oe              = "zeus:2b5dd1eb81cd08bc065bc76125f2856e9383e98b"
meta-clang           = "zeus:f5355ca9b86fb5de5930132ffd95a9b352d694f9"
meta                 = "master:a32ddd2b2a51b26c011fa50e441df39304651503"
meta-intel           = "zeus:d9942d4c3a710406b051852de7232db03c297f4e"
meta-intel           = "v2019.02:f635a364c55f1fb12519aff54924a0a5b947091e"

NOTE: Fetching uninative binary shim from 
file:///ede/tms/yocto/zeus/downloads/intel/x86_64-nativesdk-libc.tar.xz;sha256sum=a09922172c3a439105e0ae6b943daad2d83505b17da0aba97961ff433b8c21ab
Initialising tasks: 100% 
|##############################################################################|
 Time: 0:00:12
Checking sstate mirror object availability: 100% 
|######################################################| Time: 0:00:00
Sstate summary: Wanted 2436 Found 2407 Missed 29 Current 0 (98% match, 0% 
complete)
NOTE: Executing Tasks
NOTE: Setscene tasks completed
NOTE: Tasks Summary: Attempted 6767 tasks of which 6223 didn't need to be rerun 
and all succeeded.
13:31 smonsees@yix490038 
/disk0/scratch/smonsees/yocto/workspace_3/builds2/sbcb-default>


-----Original Message-----
From: Khem Raj <raj.k...@gmail.com> 
Sent: Tuesday, April 20, 2021 12:02 PM
To: Monsees, Steven C (US) <steven.mons...@baesystems.com>; Anton Antonov 
<anton.anto...@arm.com>; yocto@lists.yoctoproject.org
Subject: Re: [yocto] #yocto llvm support

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On 4/20/21 7:00 AM, Monsees, Steven C (US) via lists.yoctoproject.org wrote:
> I noticed similar behavior.
> 
> I am running zeus 3.0.4, "devtool sdk-install llvm" will get llvm 
> 8.0.1.
> 
> When I build meta-clang, and I set TOOLCHAIN?="clang" in local.conf it 
> appears to grab llvm-project-source-9.0.1-9.0.1.
> 

this is intentional, when you use meta-clang, then llvm is preferred from LLVM 
since them we have consistent version of llvm for clang and others.

> *From:*yocto@lists.yoctoproject.org <yocto@lists.yoctoproject.org> *On 
> Behalf Of *Anton Antonov
> *Sent:* Tuesday, April 20, 2021 9:51 AM
> *To:* yocto@lists.yoctoproject.org
> *Subject:* Re: [yocto] #yocto llvm support
> 
> *_External Email Alert_*
> 
> *This email has been sent from an account outside of the BAE Systems
> network.*
> 
> Please treat the email with caution, especially if you are requested 
> to click on a link, decrypt/open an attachment, or enable macros.  For 
> further information on how to spot phishing, access "Cybersecurity 
> OneSpace Page" and report phishing by clicking the button "Report 
> Phishing" on the Outlook toolbar.
> 
> 
> Hi Steven,
> 
>    I used meta-clang in my recipes and I noticed that:
> 1. The current release of poky uses LLVM v11.1.0 by default
> (poky/meta/recipes-devtools/llvm/llvm_git.bb)
> 2. Meta-clang requires LLVM v12.0.0 (meta-clang/conf/layer.conf 
> defines LLVMVERSION = "12.0.0")
> 
> As a result just including meta-clang into bblayers.conf will require 
> bitbake to build a new version of LLVM and rebuild everything which 
> uses it
> 
> Anton
> 
> 
> 
> 
> 

Attachment: log.do_sdk_depends.24732
Description: log.do_sdk_depends.24732

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