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SystemC linking issues (Ubuntu >= 16.04)

Leandro Heck

I have an issue with ld during the linking process in SystemC environment.

I would like to know if someone knows any workaround or idea to solve this issue!? Thank you.

For example, how can I change/force irun to use a custom binutils since version 2.20 is very old.

OS: Ubuntu 16.04 and 16.10

The ncsc_env_check output is (only relevant information):

ncsc_env_check: 15.10-p001: (c) Copyright 1995-2008 Cadence Design Systems, Inc.
There is no native option on linux, switching to gnu.
64-bit environment variable detected, switching to 64-bit mode
INFO: You are using an older make version

[SOME LINES WERE REMOVED]

------------------------------------------------------------
- Performing compiler version check
------------------------------------------------------------
INFO: Your gnu C++ 4.4 compiler is supported

------------------------------------------------------------
- Performing linker/assembler version check
------------------------------------------------------------
INFO: GNU LD version: GNU ld (GNU Binutils) 2.20
INFO: Assembler: <NOT GNU ASSEMBLER>
WARNING: [AS] Assembler version not supported, looking for version (2.16.1|2.17.50|2.18)

[SOME LINES WERE REMOVED]

------------------------------------------------------------
- Performing OS version check
------------------------------------------------------------
ERROR: Your linux OS version is NOT supported: 4.4.0-59-generic

------------------------------------------------------------
- Showing environment data
------------------------------------------------------------
The sanity of your environment is being tested with the following
environment setup
CXX = /soft64/cadence/ferramentas/INCISIVE151/tools/cdsgcc/gcc/4.4/bin/g++
CXX Version = 4.4
CC = gcc
CC Version = 4.4.5
LD = /soft64/cadence/ferramentas/INCISIVE151/tools.lnx86/cdsgcc/gcc/4.4/bin/ld
Perl Directory = /usr/bin
Perl = perl version 5,
Make Directory = /usr/bin
Make = GNU make v4.1
Assembler Directory = /soft64/cadence/ferramentas/INCISIVE151/tools.lnx86/cdsgcc/gcc/4.4/install/bin/as
Assembler = <NOT GNU ASSEMBLER>

CDSROOT = /soft64/cadence/ferramentas/INCISIVE151
NCSC Version = 15.10-p001
NC-Verilog Version = 15.10-p001
NC-VHDL Version = 15.10-p001

[SOME LINES WERE REMOVED]

ncsc_env_check found a total of 14 errors.

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

For example, the log from the hello_world_sc is:

» cat ncsc_run.log
TOOL: ncsc_run(64) 15.10-p001: (c) Copyright 1995-2013 Cadence Design Systems, Inc.

ncsc_run \
-64BIT \
test.cpp \
-dynamic \
-top sc_main \
-gnu \
-64BIT

$CDSROOT = /soft64/cadence/ferramentas/INCISIVE151
$TESTDIR = /home/leco/Dropbox/ultrawideband-luis-moreira/uwb-tx-ctrl/ams_sim/envtest/hello_world_sc

TOOL: ncsc(64) 15.10-p001
ncsc C++ parameters:
ncsc -COMPILER $CDSROOT/tools/cdsgcc/gcc/4.4/bin/g++
-f INCA_libs/ncsc_obj/ncsc.args
-MANUAL
-CFLAGS "-DNCSC
-I$CDSROOT/tools/systemc/include_pch
-I$CDSROOT/tools/tbsc/include
-I$CDSROOT/tools/vic/include
-I$CDSROOT/tools/methodology/OVM/CDNS-2.1.2/sc/src
-I$CDSROOT/tools/methodology/UVM/CDNS-1.1d/sc/sc
-I$CDSROOT/tools/methodology/UVM/CDNS-1.1d/ml/sc
-I$CDSROOT/tools/systemc/include/cci
-I$CDSROOT/tools/systemc/include/factory
-I$CDSROOT/tools/systemc/include/tlm2
-fPIC
-c
-x c++ -Wall"

ncsc: compiling $TESTDIR/test.cpp

building library ncsc_model.so
ld: BFD (GNU Binutils) 2.20 internal error, aborting at ../../binutils-2.20/bfd/reloc.c line 446 in bfd_get_reloc_size

ld: Please report this bug.

collect2: ld returned 1 exit status
INCA_libs/Makefile.ncsc:411: recipe for target 'libncsc_model.so' failed
make: *** [libncsc_model.so] Error 1
ncsc_run: *E,TBBLDF: Failed to build test library
./libncsc_model.so

  • Ubuntu is not a supported platform for simulation, and I have seen lots of weirdness with linker issues on Ubuntu and other Debian based platforms.

  • Yeah, I know, thanks for the answer. However, what you said does not answer my question.

    I have 2 servers (Centos 5.10 and 6.8) at the university and the CAD works nicely there. However, we have Ubuntu hosts in our labs. I would like to reduce the overload on the servers. So, I am trying to overcome this limitation by myself and maybe others have the same issues and possibly a good workaround.

  • Actually, I just figured out how to fix this right now, but I am looking for a non-invasive way, for example using environment variables or compiler flags.
    For example, it is possible to change the ld used by the Cadence SC compiler changing the ld path in this file: ${CDSROOT}/tools.lnx86/cdsgcc/gcc/bin/cdsgcc

    Just replacing ld from the new ld path (in my case, the ld installed in the system):


    *ld) EXEC="ld";; 

    To:

    *ld) EXEC="/usr/bin/ld";;

    For example the ncsc_env_check shows:

    ------------------------------------------------------------
    - Cadence tool tests Summary
    ------------------------------------------------------------
    - 7 out of 7 tests passed (100%)

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