* installing *source* package ‘Haplin’ ...
** using staged installation
** libs
using C compiler: ‘Debian clang version 18.1.8 (9)’
using C++ compiler: ‘Debian clang version 18.1.8 (9)’
clang-18  -I"/home/hornik/tmp/R-d-clang-18/include" -DNDEBUG   -I/usr/local/include -DUSE_TYPE_CHECKING_STRICT -D_FORTIFY_SOURCE=3 -DSTRICT_R_HEADERS=1  -fpic  -g -O3 -Wall -pedantic -c Haplin_init.c -o Haplin_init.o
clang++-18  -std=gnu++17 -I"/home/hornik/tmp/R-d-clang-18/include" -DNDEBUG   -I/usr/local/include -DUSE_TYPE_CHECKING_STRICT -D_FORTIFY_SOURCE=3 -DSTRICT_R_HEADERS=1  -fpic  -g -O3 -Wall -pedantic -DR_NO_REMAP -c dists.cc -o dists.o
dists.cc:30:29: error: use of undeclared identifier 'PI'
   30 | static const double TWOPI=2*PI;
      |                             ^
1 error generated.
make: *** [/home/hornik/tmp/R-d-clang-18/etc/Makeconf:200: dists.o] Error 1
ERROR: compilation failed for package ‘Haplin’
* removing ‘/srv/hornik/tmp/CRAN/Haplin.Rcheck/Haplin’