* installing to library ‘/home/hornik/tmp/R.check/r-devel-clang/Work/build/Packages’
* 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: ‘Debian clang version 22.1.8 (1+b2)’
using Fortran compiler: ‘Debian flang version 22.1.8 (1+b2)’
make[1]: Entering directory '/home/hornik/tmp/scratch/RtmpGXh328/R.INSTALL2bc42d5b8a01ed/ExactTree/src'
flang-22  -fpic  -g -O2 -c  OptTreeCallBacks.f95 -o OptTreeCallBacks.o
flang-22  -fpic  -g -O2 -c  Timer.f95 -o Timer.o
flang-22  -fpic  -g -O2 -c  OptimalTrees.f95 -o OptimalTrees.o
flang-22  -fpic  -g -O2 -c  OptTreeF.f95 -o OptTreeF.o
clang-22 -std=gnu23 -I"/home/hornik/tmp/R.check/r-devel-clang/Work/build/include" -DNDEBUG   -I/usr/local/include -D_FORTIFY_SOURCE=3   -fpic  -g -O3 -Wall -pedantic -c init.c -o init.o
clang-22 -std=gnu23 -shared -L/home/hornik/tmp/R.check/r-devel-clang/Work/build/lib -Wl,-O1 -o ExactTree.so OptTreeCallBacks.o OptTreeF.o OptimalTrees.o Timer.o init.o -L/usr/lib/llvm-22/lib/clang/22/lib/linux -L/usr/lib/llvm-22/lib -lflang_rt.runtime -lm -L/home/hornik/tmp/R.check/r-devel-clang/Work/build/lib -lR
make[1]: Leaving directory '/home/hornik/tmp/scratch/RtmpGXh328/R.INSTALL2bc42d5b8a01ed/ExactTree/src'
make[1]: Entering directory '/home/hornik/tmp/scratch/RtmpGXh328/R.INSTALL2bc42d5b8a01ed/ExactTree/src'
flang-22  -fpic  -g -O2 -c  OptTreeCallBacks.f95 -o OptTreeCallBacks.o
flang-22  -fpic  -g -O2 -c  Timer.f95 -o Timer.o
flang-22  -fpic  -g -O2 -c  OptimalTrees.f95 -o OptimalTrees.o
flang-22  -fpic  -g -O2 -c  OptTreeF.f95 -o OptTreeF.o
clang-22 -std=gnu23 -I"/home/hornik/tmp/R.check/r-devel-clang/Work/build/include" -DNDEBUG   -I/usr/local/include -D_FORTIFY_SOURCE=3   -fpic  -g -O3 -Wall -pedantic -c init.c -o init.o
make[1]: Leaving directory '/home/hornik/tmp/scratch/RtmpGXh328/R.INSTALL2bc42d5b8a01ed/ExactTree/src'
installing to /home/hornik/tmp/R.check/r-devel-clang/Work/build/Packages/00LOCK-ExactTree/00new/ExactTree/libs
** R
** byte-compile and prepare package for lazy loading
** help
*** installing help indices
** building package indices
** testing if installed package can be loaded from temporary location
Error: package or namespace load failed for ‘ExactTree’ in dyn.load(file, DLLpath = DLLpath, ...):
 unable to load shared object '/home/hornik/tmp/R.check/r-devel-clang/Work/build/Packages/00LOCK-ExactTree/00new/ExactTree/libs/ExactTree.so':
  /home/hornik/tmp/R.check/r-devel-clang/Work/build/Packages/00LOCK-ExactTree/00new/ExactTree/libs/ExactTree.so: undefined symbol: dtime_
Error: loading failed
Execution halted
ERROR: loading failed
* removing ‘/home/hornik/tmp/R.check/r-devel-clang/Work/build/Packages/ExactTree’