Undefined reference (Centos 7)

RN1 — Tue, 23 Mar 2021 11:02:18 GMT

Any idea why I cannot compile with dpcpp in centos 7?

$ dpcpp -std=c++17 -O3 -fsycl code.cpp /opt/rh/devtoolset-9/root/usr/lib/gcc/x86_64-redhat-linux/9/../../../../bin/ld: /tmp/user/code-3c6697.o: in function `main': mardyn_cpu.cpp:(.text+0x2): undefined reference to `omp_get_thread_num' /opt/rh/devtoolset-9/root/usr/lib/gcc/x86_64-redhat-linux/9/../../../../bin/ld: /opt/intel/oneapi/compiler/2021.1.1/linux/bin/../lib/libsycl.so: undefined reference to `VTT for std::__cxx11::basic_stringstream<char, std::char_traits<char>, std::allocator<char> >@GLIBCXX_3.4.21' /opt/rh/devtoolset-9/root/usr/lib/gcc/x86_64-redhat-linux/9/../../../../bin/ld: /opt/intel/oneapi/compiler/2021.1.1/linux/bin/../lib/libsycl.so: undefined reference to `std::thread::_State::~_State()@GLIBCXX_3.4.22' /opt/rh/devtoolset-9/root/usr/lib/gcc/x86_64-redhat-linux/9/../../../../bin/ld: /opt/intel/oneapi/compiler/2021.1.1/linux/bin/../lib/libsycl.so: undefined reference to `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::_M_assign(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)@GLIBCXX_3.4.21' ... $ gcc --version gcc (GCC) 4.8.5 20150623 (Red Hat 4.8.5-39) Copyright (C) 2015 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. $ ld --version GNU ld version 2.27-43.base.el7_8.1 Copyright (C) 2016 Free Software Foundation, Inc. This program is free software; you may redistribute it under the terms of the GNU General Public License version 3 or (at your option) a later version. This program has absolutely no warranty. $ ldd /opt/intel/oneapi/compiler/2021.1.1/linux/lib/libsycl.so /opt/intel/oneapi/compiler/2021.1.1/linux/lib/libsycl.so: /lib64/libstdc++.so.6: version `GLIBCXX_3.4.21' not found (required by /opt/intel/oneapi/compiler/2021.1.1/linux/lib/libsycl.so) /opt/intel/oneapi/compiler/2021.1.1/linux/lib/libsycl.so: /lib64/libstdc++.so.6: version `GLIBCXX_3.4.20' not found (required by /opt/intel/oneapi/compiler/2021.1.1/linux/lib/libsycl.so) /opt/intel/oneapi/compiler/2021.1.1/linux/lib/libsycl.so: /lib64/libstdc++.so.6: version `GLIBCXX_3.4.22' not found (required by /opt/intel/oneapi/compiler/2021.1.1/linux/lib/libsycl.so) linux-vdso.so.1 => (0x00007fff5846b000) libdl.so.2 => /lib64/libdl.so.2 (0x00007f69f16d0000) libOpenCL.so.1 => /opt/intel/oneapi/compiler/2021.1.1/linux/lib/libOpenCL.so.1 (0x00007f69f1d4a000) libpthread.so.0 => /lib64/libpthread.so.0 (0x00007f69f14b4000) libsvml.so => /opt/intel/oneapi/compiler/2021.1.1/linux/compiler/lib/intel64_lin/libsvml.so (0x00007f69ef9b7000) libirng.so => /opt/intel/oneapi/compiler/2021.1.1/linux/compiler/lib/intel64_lin/libirng.so (0x00007f69ef64d000) libstdc++.so.6 => /lib64/libstdc++.so.6 (0x00007f69ef346000) libimf.so => /opt/intel/oneapi/compiler/2021.1.1/linux/compiler/lib/intel64_lin/libimf.so (0x00007f69eecbe000) libm.so.6 => /lib64/libm.so.6 (0x00007f69ee9bc000) libgcc_s.so.1 => /lib64/libgcc_s.so.1 (0x00007f69ee7a6000) libintlc.so.5 => /opt/intel/oneapi/compiler/2021.1.1/linux/compiler/lib/intel64_lin/libintlc.so.5 (0x00007f69ee52e000) libc.so.6 => /lib64/libc.so.6 (0x00007f69ee160000) /lib64/ld-linux-x86-64.so.2 (0x00007f69f1b42000) linux-vdso.so.1 => (0x00007fff5846b000) libdl.so.2 => /lib64/libdl.so.2 (0x00007f69f16d0000) libOpenCL.so.1 => /opt/intel/oneapi/compiler/2021.1.1/linux/lib/libOpenCL.so.1 (0x00007f69f1d4a000) libpthread.so.0 => /lib64/libpthread.so.0 (0x00007f69f14b4000) libsvml.so => /opt/intel/oneapi/compiler/2021.1.1/linux/compiler/lib/intel64_lin/libsvml.so (0x00007f69ef9b7000) libirng.so => /opt/intel/oneapi/compiler/2021.1.1/linux/compiler/lib/intel64_lin/libirng.so (0x00007f69ef64d000) libstdc++.so.6 => /lib64/libstdc++.so.6 (0x00007f69ef346000) libimf.so => /opt/intel/oneapi/compiler/2021.1.1/linux/compiler/lib/intel64_lin/libimf.so (0x00007f69eecbe000) libm.so.6 => /lib64/libm.so.6 (0x00007f69ee9bc000) libgcc_s.so.1 => /lib64/libgcc_s.so.1 (0x00007f69ee7a6000) libintlc.so.5 => /opt/intel/oneapi/compiler/2021.1.1/linux/compiler/lib/intel64_lin/libintlc.so.5 (0x00007f69ee52e000) libc.so.6 => /lib64/libc.so.6 (0x00007f69ee160000) /lib64/ld-linux-x86-64.so.2 (0x00007f69f1b42000)

I tried also using LD_LIBRARY_PATH to a different compiler version:

$ LD_LIBRARY_PATH=/home/user/gcc/gcc_install_dir/lib64 ldd /opt/intel/oneapi/compiler/2021.1.1/linu x/lib/libsycl.so linux-vdso.so.1 => (0x00007fff819ab000) libdl.so.2 => /lib64/libdl.so.2 (0x00007fab67a01000) libOpenCL.so.1 => /opt/amdgpu-pro/lib64/libOpenCL.so.1 (0x00007fab6807a000) libpthread.so.0 => /lib64/libpthread.so.0 (0x00007fab677e5000) libsvml.so => not found libirng.so => not found libstdc++.so.6 => /home/user/gcc/gcc_install_dir/lib64/libstdc++.so.6 (0x00007fab67464000) libimf.so => not found libm.so.6 => /lib64/libm.so.6 (0x00007fab67162000) libgcc_s.so.1 => /home/user/gcc/gcc_install_dir/lib64/libgcc_s.so.1 (0x00007fab66f4b000) libintlc.so.5 => not found libc.so.6 => /lib64/libc.so.6 (0x00007fab66b7d000) /lib64/ld-linux-x86-64.so.2 (0x00007fab67e73000) $ ~/gcc/gcc_install_dir/bin/gcc --version gcc (GCC) 7.2.0 Copyright (C) 2017 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. $ LD_LIBRARY_PATH=/home/user/gcc/gcc_install_dir/lib64:/usr/local/lib:/usr/lib:/usr/local/lib64:/us r/lib64:$LD_LIBRARY_PATH dpcpp -std=c++17 -O3 -fsycl code.cpp /opt/rh/devtoolset-9/root/usr/lib/gcc/x86_64-redhat-linux/9/../../../../bin/ld: /tmp/user/mardyn_cpu-da40aa.o: in function `main': mardyn_cpu.cpp:(.text+0x2): undefined reference to `omp_get_thread_num' /opt/rh/devtoolset-9/root/usr/lib/gcc/x86_64-redhat-linux/9/../../../../bin/ld: /opt/intel/oneapi/compiler/2021.1.1/linux/bin/../lib/libsycl.so: undefined reference to `VTT for std::__cxx11::basic_stringstream<char, std::char_traits<char>, std::allocator<char> >@GLIBCXX_3.4.21' /opt/rh/devtoolset-9/root/usr/lib/gcc/x86_64-redhat-linux/9/../../../../bin/ld: /opt/intel/oneapi/compiler/2021.1.1/linux/bin/../lib/libsycl.so: undefined reference to `std::thread::_State::~_State()@GLIBCXX_3.4.22' /opt/rh/devtoolset-9/root/usr/lib/gcc/x86_64-redhat-linux/9/../../../../bin/ld: /opt/intel/oneapi/compiler/2021.1.1/linux/bin/../lib/libsycl.so: undefined reference to `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::_M_assign(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)@GLIBCXX_3.4.

The code itself it is just a test. I know I will have to use `-fopenmp`, etc. But currently it does not compile even the simplest hello-world.

#include <omp.h> #include <cstdio> int main(int argc, char* argv[]) { #pragma omp parallel { printf("thread id %d\n", omp_get_thread_num()); } return 0; }

This compiles in another system with ubuntu, but not with centos.

Tested also with `scl enable devtoolset-9 -- bash` and it emits the same error (undefined... GLIBCXX_3.4.21/20/22). Gcc 9.3.1

Re:Undefined reference (Centos 7)

AbhishekD_Intel — Wed, 24 Mar 2021 13:06:35 GMT

Hi Raul,

Thanks for the detailed information.

Unfortunately, DPC++ does not support CentOS 7 as of now. For more details please refer to the following link:

https://software.intel.com/content/www/us/en/develop/articles/intel-oneapi-dpcpp-system-requirements.html

CentOS 8.x is supported as of now for CPU as a host/target. Please check the above link for more details regarding supported OS for the DPC++ compiler.

Warm Regards,

Abhishek

Re:Undefined reference (Centos 7)

AbhishekD_Intel — Mon, 05 Apr 2021 08:20:45 GMT

Hi,

Please give us an update on the provided details.

Warm Regards,

Abhishek

Re:Undefined reference (Centos 7)

AbhishekD_Intel — Mon, 12 Apr 2021 12:43:59 GMT

Hi,

As we haven't heard back from you, we are considering that your issue has been resolved.

We will no longer monitor this thread. If you require any additional assistance from Intel, please post a new thread.

Any further interaction in this thread will be considered community only.

Warm Regards,

Abhishek

topic Re:Undefined reference (Centos 7) in Intel® oneAPI DPC++/C++ Compiler

Undefined reference (Centos 7)

Re:Undefined reference (Centos 7)

Re:Undefined reference (Centos 7)

Re:Undefined reference (Centos 7)