FTBFS: division by zero error while building on s390x

[mcepl]

While building the package (9.3.7) the build breaks on the s390x architecture:

[   92s] FAILED: src/CMakeFiles/swiplobjs.dir/pl-wam.c.o 
[   92s] /usr/bin/cc  -I/home/abuild/rpmbuild/BUILD/swipl-9.3.7/build/src -I/home/abuild/rpmbuild/BUILD/swipl-9.3.7/src -O2 -Wall -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=3 -fstack-protector-strong -funwind-tables -fasynchronous-unwind-tables -fstack-clash-protection -Werror=return-type -flto=auto -O2 -gdwarf-2 -g3  -std=gnu11 -fPIC -fvisibility=hidden -Wall -fno-strict-aliasing -MD -MT src/CMakeFiles/swiplobjs.dir/pl-wam.c.o -MF src/CMakeFiles/swiplobjs.dir/pl-wam.c.o.d -o src/CMakeFiles/swiplobjs.dir/pl-wam.c.o -c /home/abuild/rpmbuild/BUILD/swipl-9.3.7/src/pl-wam.c
[   92s] In file included from /home/abuild/rpmbuild/BUILD/swipl-9.3.7/src/pl-wam.h:38,
[   92s]                  from /home/abuild/rpmbuild/BUILD/swipl-9.3.7/src/pl-wam.c:42:
[   92s] /home/abuild/rpmbuild/BUILD/swipl-9.3.7/src/pl-vmi.c: In function ‘PL_next_solution___LD’:
[   92s] /home/abuild/rpmbuild/BUILD/swipl-9.3.7/src/pl-incl.h:593:45: error: division by zero in #if
[   92s]   593 | #define CODES_PER_WORD          (SIZEOF_WORD/SIZEOF_CODE)
[   92s]       |                                             ^
[   92s] /home/abuild/rpmbuild/BUILD/swipl-9.3.7/src/pl-vmi.c:491:5: note: in expansion of macro ‘CODES_PER_WORD’
[   92s]   491 | #if CODES_PER_WORD > 1
[   92s]       |     ^~~~~~~~~~~~~~
[   92s] /home/abuild/rpmbuild/BUILD/swipl-9.3.7/src/pl-incl.h:593:45: error: division by zero in #if
[   92s]   593 | #define CODES_PER_WORD          (SIZEOF_WORD/SIZEOF_CODE)
[   92s]       |                                             ^
[   92s] /home/abuild/rpmbuild/BUILD/swipl-9.3.7/src/pl-vmi.c:954:5: note: in expansion of macro ‘CODES_PER_WORD’
[   92s]   954 | #if CODES_PER_WORD > 1
[   92s]       |     ^~~~~~~~~~~~~~
[   92s] /home/abuild/rpmbuild/BUILD/swipl-9.3.7/src/pl-incl.h:593:45: error: division by zero in #if
[   92s]   593 | #define CODES_PER_WORD          (SIZEOF_WORD/SIZEOF_CODE)
[   92s]       |                                             ^
[   92s] /home/abuild/rpmbuild/BUILD/swipl-9.3.7/src/pl-vmi.c:2485:5: note: in expansion of macro ‘CODES_PER_WORD’
[   92s]  2485 | #if CODES_PER_WORD > 1
[   92s]       |     ^~~~~~~~~~~~~~
[   92s] /home/abuild/rpmbuild/BUILD/swipl-9.3.7/src/pl-incl.h:593:45: error: division by zero in #if
[   92s]   593 | #define CODES_PER_WORD          (SIZEOF_WORD/SIZEOF_CODE)
[   92s]       |                                             ^
[   92s] /home/abuild/rpmbuild/BUILD/swipl-9.3.7/src/pl-vmi.c:3865:5: note: in expansion of macro ‘CODES_PER_WORD’
[   92s]  3865 | #if CODES_PER_WORD > 1
[   92s]       |     ^~~~~~~~~~~~~~
[   93s] [42/2598] /usr/bin/cc  -I/home/abuild/rpmbuild/BUILD/swipl-9.3.7/build/src -I/home/abuild/rpmbuild/BUILD/swipl-9.3.7/src -O2 -Wall -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=3 -fstack-protector-strong -funwind-tables -fasynchronous-unwind-tables -fstack-clash-protection -Werror=return-type -flto=auto -O2 -gdwarf-2 -g3  -std=gnu11 -fPIC -fvisibility=hidden -Wall -fno-strict-aliasing -MD -MT src/CMakeFiles/swiplobjs.dir/pl-arith.c.o -MF src/CMakeFiles/swiplobjs.dir/pl-arith.c.o.d -o src/CMakeFiles/swiplobjs.dir/pl-arith.c.o -c /home/abuild/rpmbuild/BUILD/swipl-9.3.7/src/pl-arith.c
[   93s] ninja: build stopped: subcommand failed.

Complete build log with all details of reproducing the issue.

[JanWielemaker]

Hmm. This means SIZEOF_VOIDP is 0. That is set from check_type_size("void *" SIZEOF_VOIDP). CMake says this is 0 if the type is unknown (should not be the case) or the value is architecture dependent. Could that be our problem? We do need these sizes at compile time.

[mcepl]

Oh, shut, it is a duplicate of #1286