!!! existing preserved libs:
>>> package: sys-libs/binutils-libs-2.36.1
 *  - /usr/lib64/libbfd-2.32.0.gentoo-sys-libs-binutils-libs-st-def.so
 *      used by /usr/bin/mariabackup (dev-db/mariadb-10.4.15)
 *      used by /usr/bin/mysqltest (dev-db/mariadb-10.4.15)
 *      used by /usr/lib64/binutils/x86_64-pc-linux-gnu/2.36.1/libctf.so.0.0.0 (sys-devel/binutils-2.36.1)
 *      used by 2 other files
Use emerge @preserved-rebuild to rebuild packages using these libraries

<snip>
== Configuring MariaDB Connector/C
CMake Deprecation Warning at libmariadb/CMakeLists.txt:5 (CMAKE_MINIMUM_REQUIRED):
  Compatibility with CMake < 2.8.12 will be removed from a future version of
  CMake.

  Update the VERSION argument <min> value or use a ...<max> suffix to tell
  CMake that the project does not need compatibility with older versions.


<snip>
-- Looking for pthread_getspecific in pthread - found
-- Looking for gethostbyname_r
-- Looking for gethostbyname_r - found
-- Looking for setsockopt
-- Looking for setsockopt - found
-- TLS library/version: OpenSSL 1.1.1k
-- SYSTEM_LIBS /usr/lib/libz.so;dl;m;pthread;pthread;dl;m;/usr/lib64/libssl.so;/usr/lib64/libcrypto.so
-- SYSTEM processor: x86_64
CMake Error at libmariadb/cmake/ConnectorName.cmake:30 (ENDMACRO):
  Flow control statements are not properly nested.
Call Stack (most recent call first):
  libmariadb/CMakeLists.txt:434 (INCLUDE)


-- Configuring incomplete, errors occurred!
See also "/var/tmp/portage/dev-db/mariadb-10.4.15/work/mariadb-10.4.15_build/CMakeFiles/CMakeOutput.log".
See also "/var/tmp/portage/dev-db/mariadb-10.4.15/work/mariadb-10.4.15_build/CMakeFiles/CMakeError.log".
 * ERROR: dev-db/mariadb-10.4.15::core-server-kit failed (configure phase):
 *   cmake failed
 * 
 * Call stack:
 *     ebuild.sh, line   93:  Called src_configure
 *   environment, line 5461:  Called cmake_src_configure
 *   environment, line 1447:  Called die
 * The specific snippet of code:
 *       "${CMAKE_BINARY}" "${cmakeargs[@]}" "${CMAKE_USE_DIR}" || die "cmake failed";
 * 
 * If you need support, post the output of `emerge --info '=dev-db/mariadb-10.4.15::core-server-kit'`,
 * the complete build log and the output of `emerge -pqv '=dev-db/mariadb-10.4.15::core-server-kit'`.
!!! When you file a bug report, please include the following information:
GENTOO_VM=  CLASSPATH="" JAVA_HOME=""
JAVACFLAGS="" COMPILER=""
and of course, the output of emerge --info =mariadb-10.4.15
 * The complete build log is located at '/var/tmp/portage/dev-db/mariadb-10.4.15/temp/build.log'.
 * The ebuild environment file is located at '/var/tmp/portage/dev-db/mariadb-10.4.15/temp/environment'.
 * Working directory: '/var/tmp/portage/dev-db/mariadb-10.4.15/work/mariadb-10.4.15_build'
 * S: '/var/tmp/portage/dev-db/mariadb-10.4.15/work/mysql'