topic hi, in Intel® Distribution of OpenVINO™ Toolkit

Failed to Build Inference Sample Applications

Rasheed__Umer — Tue, 18 Dec 2018 20:28:23 GMT

I have been trying to build sample applications on Linux
Please see:
https://software.intel.com/en-us/articles/OpenVINO-InferEngine#supported-layers

We followed the steps listed in the link above and got this error when we tried to ‘make’:
/home/avidbots/intel/computer_vision_sdk/deployment_tools/inference_engine/lib/ubuntu_16.04/intel64/libinference_engine.so: error: undefined reference to 'pthread_create'
collect2: error: ld returned 1 exit status
hello_autoresize_classification/CMakeFiles/hello_autoresize_classification.dir/build.make:114: recipe for target 'intel64/Debug/hello_autoresize_classification' failed
make[2]: *** [intel64/Debug/hello_autoresize_classification] Error 1
CMakeFiles/Makefile2:414: recipe for target
'hello_autoresize_classification/CMakeFiles/hello_autoresize_classification.dir/all' failed
make[1]: *** [hello_autoresize_classification/CMakeFiles/hello_autoresize_classification.dir/all] Error 2
Makefile:127: recipe for target 'all' failed
make: *** [all] Error 2

Just making sure. Have you

nikos1 — Tue, 18 Dec 2018 22:46:35 GMT

Just making sure. Have you set up OpenVino environment?

source  ~/intel/computer_vision_sdk/bin/setupvars.sh

Hi

Rasheed__Umer — Tue, 18 Dec 2018 22:47:50 GMT

Yes. Tried on multiple laptops as well. Same problem persists.

Umer

Hi

Rasheed__Umer — Tue, 18 Dec 2018 22:51:50 GMT

I have also tried with both Debug and Release versions. Same issue.

Which version of cmake are

nikos1 — Tue, 18 Dec 2018 23:06:56 GMT

Which version of cmake are you using?

cmake --version

Please note:

nikos1 — Tue, 18 Dec 2018 23:08:59 GMT

Please note:

Supported Linux build environment:

Ubuntu* 16.04 LTS 64-bit or CentOS* 7.4 64-bit

GCC* 5.4.0 (for Ubuntu* 16.04) or GCC* 4.8.5 (for CentOS* 7.4)

CMake* version 2.8 or higher.

Hi

Rasheed__Umer — Tue, 18 Dec 2018 23:37:17 GMT

Thanks for the quick response. The current platforms I have tested on have

Ubuntu 16.04

GCC Version: 5.4.0

CMake Version: 3.5.1

Could you try again after

nikos1 — Tue, 18 Dec 2018 23:59:22 GMT

Could you try again after

sudo apt-get install libpthread-stubs0-dev

or cmake with

cmake -DCMAKE_SHARED_LINKER_FLAGS=-pthread ..

If not successful what are the pthread entries after cmake ?

Do you get something like

-- Looking for pthread.h
-- Looking for pthread.h - found
-- Looking for pthread_create
-- Looking for pthread_create - not found
-- Looking for pthread_create in pthreads
-- Looking for pthread_create in pthreads - not found
-- Looking for pthread_create in pthread
-- Looking for pthread_create in pthread - found

Hi

Rasheed__Umer — Wed, 19 Dec 2018 00:07:23 GMT

Sorry no luck.

Lipbthread is already installed.

This is what terminal looks like after CMake:

avidbots@cybel:~/intel/computer_vision_sdk/deployment_tools/inference_engine/samples/build$ cmake -DCMAKE_SHARED_LINKER_FLAGS=-pthread ..
-- /etc/*-release distrib: Ubuntu 16.04
-- Host CPU features:
-- 3DNOW not supported
-- 3DNOWEXT not supported
-- ABM not supported
-- ADX supported
-- AES supported
-- AVX supported
-- AVX2 supported
-- AVX512CD not supported
-- AVX512F not supported
-- AVX512ER not supported
-- AVX512PF not supported
-- BMI1 supported
-- BMI2 supported
-- CLFSH supported
-- CMPXCHG16B supported
-- CX8 supported
-- ERMS supported
-- F16C supported
-- FMA supported
-- FSGSBASE supported
-- FXSR supported
-- HLE not supported
-- INVPCID supported
-- LAHF supported
-- LZCNT supported
-- MMX supported
-- MMXEXT not supported
-- MONITOR supported
-- MOVBE supported
-- MSR supported
-- OSXSAVE supported
-- PCLMULQDQ supported
-- POPCNT supported
-- PREFETCHWT1 not supported
-- RDRAND supported
-- RDSEED supported
-- RDTSCP supported
-- RTM not supported
-- SEP supported
-- SHA not supported
-- SSE supported
-- SSE2 supported
-- SSE3 supported
-- SSE4.1 supported
-- SSE4.2 supported
-- SSE4a not supported
-- SSSE3 supported
-- SYSCALL supported
-- TBM not supported
-- XOP not supported
-- XSAVE supported
-- Validation app build is switched off
-- Configuring done
-- Generating done
-- Build files have been written to: /home/avidbots/intel/computer_vision_sdk/deployment_tools/inference_engine/samples/build

Umer

hi,

herianto__herianto — Fri, 07 Jun 2019 02:20:06 GMT

hi,

have the same error, "libinference_engine.so: undefined reference to `pthread_create'"

this reference help me solve the issue:

https://stackoverflow.com/questions/5395309/how-do-i-force-cmake-to-include-pthread-option-during-compilation

hopes it help.

Herianto