* installing *source* package ‘lfe’ ...
** 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 build system type... x86_64-pc-linux-gnu
checking host system type... x86_64-pc-linux-gnu
checking for a sed that does not truncate output... /usr/bin/sed
checking how to run the C preprocessor... clang-18 -E
checking for grep that handles long lines and -e... /usr/bin/grep
checking for egrep... /usr/bin/grep -E
checking whether clang-18 is Clang... yes
checking whether pthreads work with "-pthread" and "-lpthread"... yes
checking whether Clang needs flag to prevent "argument unused" warning when linking with -pthread... no
checking for joinable pthread attribute... PTHREAD_CREATE_JOINABLE
checking whether more special flags are required for pthreads... no
checking for PTHREAD_PRIO_INHERIT... yes
checking for timed semaphore wait... yes
checking for library containing pthread_setname_np... none required
configure: creating ./config.status
config.status: creating src/Makevars
config.status: creating src/config.h
config.status: src/config.h is unchanged
** libs
using C compiler: ‘Debian clang version 18.1.8 (11)’
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 -fvisibility=hidden  -pthread  -fpic  -g -O3 -Wall -pedantic -c crowsum.c -o crowsum.o
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 -fvisibility=hidden  -pthread  -fpic  -g -O3 -Wall -pedantic -c demean.c -o demean.o
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 -fvisibility=hidden  -pthread  -fpic  -g -O3 -Wall -pedantic -c factor.c -o factor.o
factor.c:25:12: error: call to undeclared function 'Calloc'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
   25 |   curoff = Calloc(nlev + 1, int);
      |            ^
factor.c:25:29: error: expected expression
   25 |   curoff = Calloc(nlev + 1, int);
      |                             ^
factor.c:31:3: error: call to undeclared function 'Free'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
   31 |   Free(curoff);
      |   ^
factor.c:31:3: note: did you mean 'free'?
/usr/include/stdlib.h:687:13: note: 'free' declared here
  687 | extern void free (void *__ptr) __THROW;
      |             ^
factor.c:162:11: error: call to undeclared function 'Calloc'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
  162 |   stack = Calloc(numvert * 4, int);
      |           ^
factor.c:162:31: error: expected expression
  162 |   stack = Calloc(numvert * 4, int);
      |                               ^
factor.c:236:3: error: call to undeclared function 'Free'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
  236 |   Free(stack);
      |   ^
factor.c:251:18: error: call to undeclared function 'Calloc'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
  251 |   int *newlist = Calloc(N, int);
      |                  ^
factor.c:251:28: error: expected expression
  251 |   int *newlist = Calloc(N, int);
      |                            ^
factor.c:252:28: error: expected expression
  252 |   int *oldlist = Calloc(N, int);
      |                            ^
factor.c:255:36: error: expected expression
  255 |   int *facmat = Calloc(numfac * N, int);
      |                                    ^
factor.c:301:3: error: call to undeclared function 'Free'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
  301 |   Free(facmat);
      |   ^
factor.c:425:11: error: call to undeclared function 'Calloc'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
  425 |   gpsiz = Calloc(comps, double);
      |           ^
factor.c:425:25: error: expected expression
  425 |   gpsiz = Calloc(comps, double);
      |                         ^
factor.c:426:23: error: expected expression
  426 |   idx = Calloc(comps, int);
      |                       ^
factor.c:434:3: error: call to undeclared function 'Free'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
  434 |   Free(gpsiz);
      |   ^
factor.c:435:26: error: expected expression
  435 |   levtrl = Calloc(comps, int);
      |                          ^
16 errors generated.
make: *** [/home/hornik/tmp/R-d-clang-18/etc/Makeconf:195: factor.o] Error 1
ERROR: compilation failed for package ‘lfe’
* removing ‘/srv/hornik/tmp/CRAN_pretest/lfe.Rcheck/lfe’