* installing *source* package ‘RGN’ ...
** this is package ‘RGN’ version ‘1.0.0’
** package ‘RGN’ successfully unpacked and MD5 sums checked
** using staged installation
** libs
using C compiler: ‘Apple clang version 14.0.3 (clang-1403.0.22.14.1)’
using Fortran compiler: ‘GNU Fortran (GCC) 14.2.0’
using SDK: ‘MacOSX11.3.sdk’
clang -arch x86_64 -I"/Library/Frameworks/R.framework/Resources/include" -DNDEBUG   -I/opt/R/x86_64/include    -fPIC  -falign-functions=64 -Wall -g -O2  -c RGN_init.c -o RGN_init.o
/opt/gfortran/bin/gfortran -arch x86_64  -fPIC  -Wall -g -O2  -c  constantsMod.f90 -o constantsMod.o
/opt/gfortran/bin/gfortran -arch x86_64  -fPIC  -Wall -g -O2  -c  hymod.f90 -o hymod.o
/opt/gfortran/bin/gfortran -arch x86_64  -fPIC  -Wall -g -O2  -c  qr.f90 -o qr.o
/opt/gfortran/bin/gfortran -arch x86_64  -fPIC  -Wall -g -O2  -c test.f -o test.o
hymod.f90:22:8:

   22 |    use constantsMod,only:mrk, mik, isoil,iqk1, islo
      |        1
Fatal Error: Cannot open module file 'constantsmod.mod' for reading at (1): No such file or directory
compilation terminated.
qr.f90:4:8:

    4 |    use constantsMod, only: rk
      |        1
Fatal Error: Cannot open module file 'constantsmod.mod' for reading at (1): No such file or directory
compilation terminated.
make: *** [qr.o] Error 1
make: *** Waiting for unfinished jobs....
make: *** [hymod.o] Error 1
ERROR: compilation failed for package ‘RGN’
* removing ‘/Volumes/Builds/packages/big-sur-x86_64/results/4.5/RGN.Rcheck/RGN’