Linking simulink model with physmod fails on ubuntu 18.04

I'm having some trouble compilng a simulink model that incoprorates simscape multibody. Other models work fine, the compile phase works but the linker doesn't like the archive files that came with physmod. Not sure what the next debug step would be.

g++ -shared -Wl,--no-undefined -o {YOINK} -Wl,--start-group /usr/local/MATLAB/R2022b/extern/physmod/glnxa64/ssc_sli/lib/ssc_sli_std.a /usr/local/MATLAB/R2022b/extern/physmod/glnxa64/sm_ssci/lib/sm_ssci_std.a /usr/local/MATLAB/R2022b/extern/physmod/glnxa64/ssc_core/lib/ssc_core_std.a /usr/local/MATLAB/R2022b/extern/physmod/glnxa64/ssc_st/lib/ssc_st_std.a /usr/local/MATLAB/R2022b/extern/physmod/glnxa64/mc/lib/mc_std.a /usr/local/MATLAB/R2022b/extern/physmod/glnxa64/sm/lib/sm_std.a /usr/local/MATLAB/R2022b/extern/physmod/glnxa64/pm_math/lib/pm_math_std.a /usr/local/MATLAB/R2022b/extern/physmod/glnxa64/pm/lib/pm_std.a -Wl,--end-group /usr/bin/ld: /usr/local/MATLAB/R2022b/extern/physmod/glnxa64/ssc_sli/lib/ssc_sli_std.a(ssc_sli_0bd269e6.o): unable to initialize decompress status for section .debug_info /usr/bin/ld: /usr/local/MATLAB/R2022b/extern/physmod/glnxa64/ssc_sli/lib/ssc_sli_std.a(ssc_sli_0bd269e6.o): unable to initialize decompress status for section .debug_info /usr/local/MATLAB/R2022b/extern/physmod/glnxa64/ssc_sli/lib/ssc_sli_std.a: error adding symbols: File format not recognized

$> gcc -v

Using built-in specs.

COLLECT_GCC=gcc

COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/7/lto-wrapper

OFFLOAD_TARGET_NAMES=nvptx-none

OFFLOAD_TARGET_DEFAULT=1

Target: x86_64-linux-gnu

Configured with: ../src/configure -v --with-pkgversion='Ubuntu 7.5.0-3ubuntu1~18.04' --with-bugurl=file:///usr/share/doc/gcc-7/README.Bugs --enable-languages=c,ada,c++,go,brig,d,fortran,objc,obj-c++ --prefix=/usr --with-gcc-major-version-only --program-suffix=-7 --program-prefix=x86_64-linux-gnu- --enable-shared --enable-linker-build-id --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --libdir=/usr/lib --enable-nls --enable-bootstrap --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --with-default-libstdcxx-abi=new --enable-gnu-unique-object --disable-vtable-verify --enable-libmpx --enable-plugin --enable-default-pie --with-system-zlib --with-target-system-zlib --enable-objc-gc=auto --enable-multiarch --disable-werror --with-arch-32=i686 --with-abi=m64 --with-multilib-list=m32,m64,mx32 --enable-multilib --with-tune=generic --enable-offload-targets=nvptx-none --without-cuda-driver --enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu

Thread model: posix

gcc version 7.5.0 (Ubuntu 7.5.0-3ubuntu1~18.04)

Answer 1

[Raghav]

Hi,

Based on the question, I understand that you want help regarding the linker phase of the Simulink model.

The error message you provided suggests that the linker is having trouble with the format of one of the archive files, specifically /usr/local/MATLAB/R2022b/extern/physmod/glnxa64/ssc_sli/lib/ssc_sli_std.a. The error message "unable to initialize decompress status for section .debug_info" is typically associated with an issue with the debugging information in an object file.

One possible cause of this issue is that the object file was compiled with a version of the compiler that is not compatible with the linker. In this case, you are using GCC version 7.5.0, which is the version that comes with Ubuntu 18.04. It is possible that this version of GCC is not compatible with the linker that comes with MATLAB R2022b.

One possible solution is to try updating your GCC version to 9.3. Another option is to try using a different version of MATLAB that is compatible with your current GCC version.

Hope it helps!

Regards,

Raghav Bansal