* installing *source* package ‘fcwtr’ ...
** using staged installation
checking for gcc... clang-18
checking whether the C compiler works... yes
checking for C compiler default output file name... a.out
checking for suffix of executables... 
checking whether we are cross compiling... no
checking for suffix of object files... o
checking whether the compiler supports GNU C... yes
checking whether clang-18 accepts -g... yes
checking for clang-18 option to enable C11 features... none needed
checking how to run the C preprocessor... clang-18 -E
checking for brew... no
checking whether the compiler supports GNU C++... yes
checking whether clang++-18 -std=gnu++17 accepts -g... yes
checking for clang++-18 -std=gnu++17 option to enable C++11 features... none needed
checking for stdio.h... yes
checking for stdlib.h... yes
checking for string.h... yes
checking for inttypes.h... yes
checking for stdint.h... yes
checking for strings.h... yes
checking for sys/stat.h... yes
checking for sys/types.h... yes
checking for unistd.h... yes
checking for fftw3.h... yes
checking for library containing fftwf_free... -lfftw3f
checking for omp.h... yes
checking for library containing fftwf_plan_with_nthreads... -lfftw3f_omp
checking for clang++-18 -std=gnu++17 option to support OpenMP... -fopenmp
configure: creating ./config.status
config.status: creating src/Makevars

  --------------------------------------------------
  Configuration for fcwtr 0.2.0

    cppflags:    
    cxxflags:    -fopenmp
    ldflags:  
    libs:     -lfftw3f_omp -lfftw3f    

  --------------------------------------------------

** libs
using C++ compiler: ‘Debian clang version 18.1.6 (1)’
using C++17
clang++-18  -std=gnu++17 -I"/home/hornik/tmp/R/include" -DNDEBUG -I.     -I'/home/hornik/lib/R/Library/4.5/x86_64-linux-gnu/cpp11/include' -I/usr/local/include -DUSE_TYPE_CHECKING_STRICT -D_FORTIFY_SOURCE=3  -I.    -fopenmp -fpic  -g -O3 -Wall -pedantic -DR_NO_REMAP -c cpp11.cpp -o cpp11.o
In file included from cpp11.cpp:5:
In file included from /home/hornik/lib/R/Library/4.5/x86_64-linux-gnu/cpp11/include/cpp11/declarations.hpp:13:
In file included from /home/hornik/lib/R/Library/4.5/x86_64-linux-gnu/cpp11/include/cpp11.hpp:3:
/home/hornik/lib/R/Library/4.5/x86_64-linux-gnu/cpp11/include/cpp11/R.hpp:11:9: warning: 'R_NO_REMAP' macro redefined [-Wmacro-redefined]
   11 | #define R_NO_REMAP
      |         ^
<command line>:4:9: note: previous definition is here
    4 | #define R_NO_REMAP 1
      |         ^
1 warning generated.
clang++-18  -std=gnu++17 -I"/home/hornik/tmp/R/include" -DNDEBUG -I.     -I'/home/hornik/lib/R/Library/4.5/x86_64-linux-gnu/cpp11/include' -I/usr/local/include -DUSE_TYPE_CHECKING_STRICT -D_FORTIFY_SOURCE=3  -I.    -fopenmp -fpic  -g -O3 -Wall -pedantic -DR_NO_REMAP -c fcwt.cpp -o fcwt.o
clang++-18  -std=gnu++17 -I"/home/hornik/tmp/R/include" -DNDEBUG -I.     -I'/home/hornik/lib/R/Library/4.5/x86_64-linux-gnu/cpp11/include' -I/usr/local/include -DUSE_TYPE_CHECKING_STRICT -D_FORTIFY_SOURCE=3  -I.    -fopenmp -fpic  -g -O3 -Wall -pedantic -DR_NO_REMAP -c interface_fcwt.cpp -o interface_fcwt.o
In file included from interface_fcwt.cpp:1:
In file included from /home/hornik/lib/R/Library/4.5/x86_64-linux-gnu/cpp11/include/cpp11.hpp:3:
/home/hornik/lib/R/Library/4.5/x86_64-linux-gnu/cpp11/include/cpp11/R.hpp:11:9: warning: 'R_NO_REMAP' macro redefined [-Wmacro-redefined]
   11 | #define R_NO_REMAP
      |         ^
<command line>:4:9: note: previous definition is here
    4 | #define R_NO_REMAP 1
      |         ^
1 warning generated.
clang++-18 -std=gnu++17 -shared -L/home/hornik/tmp/R/lib -Wl,-O1 -o fcwtr.so cpp11.o fcwt.o interface_fcwt.o -lfftw3f_omp -lfftw3f -L/home/hornik/tmp/R/lib -lR
installing to /srv/hornik/tmp/CRAN/fcwtr.Rcheck/00LOCK-fcwtr/00new/fcwtr/libs
** R
** data
*** moving datasets to lazyload DB
** byte-compile and prepare package for lazy loading
** help
*** installing help indices
*** copying figures
** building package indices
** testing if installed package can be loaded from temporary location
Error: package or namespace load failed for ‘fcwtr’ in dyn.load(file, DLLpath = DLLpath, ...):
 unable to load shared object '/srv/hornik/tmp/CRAN/fcwtr.Rcheck/00LOCK-fcwtr/00new/fcwtr/libs/fcwtr.so':
  /srv/hornik/tmp/CRAN/fcwtr.Rcheck/00LOCK-fcwtr/00new/fcwtr/libs/fcwtr.so: undefined symbol: __kmpc_for_static_init_4
Error: loading failed
Execution halted
ERROR: loading failed
* removing ‘/srv/hornik/tmp/CRAN/fcwtr.Rcheck/fcwtr’