unable to build mariadb 10.4

using the same build environment as for maria 10.3 compilation just stops with "Error 2":
[..]
WARNING: Target "mroonga" requests linking to directory "/usr/lib64". Targets may link only to libraries. CMake is dropping the item.
WARNING: Target "suggest" requests linking to directory "/usr/lib64". Targets may link only to libraries. CMake is dropping the item.
WARNING: Target "tsv_query_expander" requests linking to directory "/usr/lib64". Targets may link only to libraries. CMake is dropping the item.
[..]
[ 3%] Linking C static library libstrings.a
cd /tmp/mariadb/BUILD/mariadb-10.4.6/build/strings && /usr/bin/cmake -P CMakeFiles/strings.dir/cmake_clean_target.cmake
cd /tmp/mariadb/BUILD/mariadb-10.4.6/build/strings && /usr/bin/cmake -E cmake_link_script CMakeFiles/strings.dir/link.txt --verbose=1
/bin/ar qc libstrings.a CMakeFiles/strings.dir/bchange.c.o CMakeFiles/strings.dir/bmove_upp.c.o CMakeFiles/strings.dir/ctype-big5.c.o CMakeFiles/strings.dir/ctype-bin.c.o CMakeFiles/strings.dir/ctype-cp932.c.o CMakeFiles/strings.dir/ctype-czech.c.o CMakeFiles/strings.dir/ctype-euc_kr.c.o CMakeFiles/strings.dir/ctype-eucjpms.c.o CMakeFiles/strings.dir/ctype-extra.c.o CMakeFiles/strings.dir/ctype-gb2312.c.o CMakeFiles/strings.dir/ctype-gbk.c.o CMakeFiles/strings.dir/ctype-latin1.c.o CMakeFiles/strings.dir/ctype-mb.c.o CMakeFiles/strings.dir/ctype-simple.c.o CMakeFiles/strings.dir/ctype-sjis.c.o CMakeFiles/strings.dir/ctype-tis620.c.o CMakeFiles/strings.dir/ctype-uca.c.o CMakeFiles/strings.dir/ctype-ucs2.c.o CMakeFiles/strings.dir/ctype-ujis.c.o CMakeFiles/strings.dir/ctype-utf8.c.o CMakeFiles/strings.dir/ctype-win1250ch.c.o CMakeFiles/strings.dir/ctype.c.o CMakeFiles/strings.dir/decimal.c.o CMakeFiles/strings.dir/dtoa.c.o CMakeFiles/strings.dir/int2str.c.o CMakeFiles/strings.dir/is_prefix.c.o CMakeFiles/strings.dir/llstr.c.o CMakeFiles/strings.dir/longlong2str.c.o CMakeFiles/strings.dir/my_strtoll10.c.o CMakeFiles/strings.dir/my_vsnprintf.c.o CMakeFiles/strings.dir/str2int.c.o CMakeFiles/strings.dir/strcend.c.o CMakeFiles/strings.dir/strend.c.o CMakeFiles/strings.dir/strfill.c.o CMakeFiles/strings.dir/strmake.c.o CMakeFiles/strings.dir/strmov.c.o CMakeFiles/strings.dir/strnmov.c.o CMakeFiles/strings.dir/strxmov.c.o CMakeFiles/strings.dir/strxnmov.c.o CMakeFiles/strings.dir/xml.c.o CMakeFiles/strings.dir/strmov_overlapp.c.o CMakeFiles/strings.dir/my_strchr.c.o CMakeFiles/strings.dir/strcont.c.o CMakeFiles/strings.dir/strappend.c.o CMakeFiles/strings.dir/json_lib.c.o
/bin/ranlib libstrings.a
make[2]: Leaving directory '/tmp/mariadb/BUILD/mariadb-10.4.6/build'
make[1]: Entering directory '/tmp/mariadb/BUILD/mariadb-10.4.6/build'
[ 3%] Built target strings
make[1]: Leaving directory '/tmp/mariadb/BUILD/mariadb-10.4.6/build'
make: *** [Makefile:166: all] Error 2

Looking at the make process I encounter some warnings e.g.
CMake Warning (dev) at cmake/dtrace.cmake:150 (GET_TARGET_PROPERTY):
Policy CMP0026 is not set: Disallow use of the LOCATION target property.
Run "cmake --help-policy CMP0026" for policy details. Use the cmake_policy
command to set the policy and suppress this warning.

CMake Warning (dev) at storage/mroonga/vendor/groonga/vendor/plugins/groonga-normalizer-mysql/CMakeLists.txt:28 (option):
Policy CMP0077 is not set: option() honors normal variables. Run "cmake
--help-policy CMP0077" for policy details. Use the cmake_policy command to
set the policy and suppress this warning.