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error: Unknown attribute kind (52) (Producer: 'LLVM4.0.0' Reader: 'LLVM 3.8.0') #5499

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akshay-hazari opened this issue Aug 22, 2017 · 3 comments
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error: Unknown attribute kind (52) (Producer: 'LLVM4.0.0' Reader: 'LLVM 3.8.0') #5499

akshay-hazari opened this issue Aug 22, 2017 · 3 comments

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@akshay-hazari
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akshay-hazari commented Aug 22, 2017 •
edited

The example I have been trying to compile gets done via cmake which creates a cpp.o file.
The .js file created gives a corrupted heap memory area error.

But when I try to run the compiled cpp.o code like this it shows.

./webcam_face_pose_ex.cpp.o
error: Unknown attribute kind (52) (Producer: 'LLVM4.0.0' Reader: 'LLVM 3.8.0')

clang -v on the system showed 3.8.0

So I tried to install clang-4.0.0 by adding a ppa to apt-get and update-alternatives to use clang-4.0 on the system But it doesn't resolve the error.

Is there a way to use LLVM3.8.0 in emscripten or any other way to solve it.

The .emscripten file reads like.

import os
LLVM_ROOT='/home/akshay/Downloads/emsdk-portable/clang/fastcomp/build_incoming_64/bin'
NODE_JS='/home/akshay/Downloads/emsdk-portable/node/4.1.1_64bit/bin/node'
EMSCRIPTEN_ROOT='/home/akshay/Downloads/emsdk-portable/emscripten/incoming'
EMSCRIPTEN_NATIVE_OPTIMIZER='/home/akshay/Downloads/emsdk-portable/emscripten/incoming_64bit_optimizer/optimizer'
SPIDERMONKEY_ENGINE = ''
V8_ENGINE = ''
TEMP_DIR = '/tmp'
COMPILER_ENGINE = NODE_JS
JS_ENGINES = [NODE_JS]

Any help is appreciated,
@juj
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juj commented Aug 22, 2017

This is a duplicate of #5435 (comment), where we are already discussing the issue, so let's not make two copies of it.

@juj juj closed this as completed Aug 22, 2017
@Rtoax
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Rtoax commented Nov 4, 2021

My problem: error: Unknown attribute kind (61) (Producer: 'LLVM11.0.0' Reader: 'LLVM 7.0.1')

when i $ whereis opt, get

$ whereis opt 
opt: /usr/bin/opt /etc/opt /usr/local/bin/opt /usr/share/man/man1/opt.1.gz
$ /usr/local/bin/opt --version
LLVM (http://llvm.org/):
  LLVM version 7.0.1
  Optimized build.
  Default target: x86_64-unknown-linux-gnu
  Host CPU: skylake
$ /usr/bin/opt --version
LLVM (http://llvm.org/):
  LLVM version 11.0.0
  Optimized build.
  Default target: x86_64-unknown-linux-gnu
  Host CPU: skylake

i delete opt in local($ rm -f /usr/local/bin/opt), the same as llc command.
#5435

@Rtoax Rtoax mentioned this issue Nov 4, 2021
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@sbc100
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sbc100 commented Nov 4, 2021

@Rtoax emscripten uses it own version of llvm / opt, and is likely not compatible with the system version (/usr/bin/opt etc). We build and ship llvm tip-of-tree which is currently llvm-14 (i.e. an unreleased version).

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@juj @sbc100 @akshay-hazari @Rtoax