https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100755
--- Comment #3 from afernandez at odyhpc dot com --- Sorry for the delay. The system is AArch64 and running CentOS8.3. I have 2 GCC installations, one is 8.3.1 and the second is 11.1.0. NCEPLIBS builds with the former but not with the second. The 1st step is with cmake cd /opt/prae sudo git clone https://github.com/NOAA-EMC/NCEPLIBS cd /opt/prae/NCEPLIBS sudo mkdir -p build && cd build sudo /usr/local/bin/cmake -DCMAKE_INSTALL_PREFIX=/opt/prae/NCEP -DCMAKE_C_COMPILER=/opt/prae/openmpi/bin/mpicc -DCMAKE_Fortran_COMPILER=/opt/prae/openmpi/bin/mpif90 -DCMAKE_INSTALL_PREFIX=/opt/prae/NCEP -DCMAKE_PREFIX_PATH=/opt/prae/netcdf -DNetCDF_INCLUDE_DIRS=/opt/prae/netcdf/include -DNetCDF_LIBRARIES=/opt/prae/netcdf/lib /opt/prae/NCEPLIBS Then, it fails when invoking make. I also tried adding the flag "-fdefault-integer-8" but it didn't change anything. If I'm understanding correctly and this is an extension being deprecated, is there any option to push the compilation with gcc11.1 through? I'm not the developer so even if they agreed to make the necessary changes, it might take some time. Thanks.