* installing *source* package ‘ExactTree’ ...
** this is package ‘ExactTree’ version ‘0.1.1’
** package ‘ExactTree’ successfully unpacked and MD5 sums checked
** using staged installation
** libs
using C compiler: ‘Apple clang version 21.0.0 (clang-2100.1.1.101)’
using Fortran compiler: ‘GNU Fortran (GCC) 14.2.0’
using SDK: ‘MacOSX26.5.sdk’
/opt/gfortran/bin/gfortran -mtune=native -mmacosx-version-min=26  -fPIC  -g -O2 -Wall -pedantic  -c  OptTreeCallBacks.f95 -o OptTreeCallBacks.o
/opt/gfortran/bin/gfortran -mtune=native -mmacosx-version-min=26  -fPIC  -g -O2 -Wall -pedantic  -c  Timer.f95 -o Timer.o
clang -mmacos-version-min=26 -std=gnu23 -I"/Users/ripley/R/R-devel/include" -DNDEBUG   -isystem /opt/R/arm64/include    -fPIC  -falign-functions=8 -g -O2 -Wall -pedantic -Wconversion -Wno-sign-conversion -Wstrict-prototypes  -c init.c -o init.o
/opt/gfortran/bin/gfortran -mtune=native -mmacosx-version-min=26  -fPIC  -g -O2 -Wall -pedantic  -c  OptimalTrees.f95 -o OptimalTrees.o
OptimalTrees.f95:3:5:

    3 | USE Timer
      |     1
Fatal Error: Cannot open module file 'timer.mod' for reading at (1): No such file or directory
compilation terminated.
make[1]: *** [OptimalTrees.o] Error 1
make[1]: Target `all' not remade because of errors.
ERROR: compilation failed for package ‘ExactTree’
* removing ‘/Users/ripley/R/packages/tests-devel/ExactTree.Rcheck/ExactTree’