Hello,
can't compile latest ossec hids on proxmox hypervisor.
Any idea?

`cc -I./external/compat -DMAX_AGENTS=2048 -DOSSECHIDS -DDEFAULTDIR="/var/ossec" -DUSER="ossec" -DREMUSER="ossecr" -DGROUPGLOBAL="ossec" -DMAILUSER="ossecm" -DLinux -DINOTIFY_ENABLED -DHAVE_SYSTEMD -DZLIB_SYSTEM -DUSE_PCRE2_JIT -DLIBOPENSSL_ENABLED -DLOCAL -Wall -Wextra -I./ -I./headers/ -c os_xml/os_xml_variables.c -o os_xml/os_xml_variables.o
os_xml/os_xml_variables.c: In function ‘OS_ApplyVariables’:
os_xml/os_xml_variables.c:179:42: warning: ‘%s’ directive output may be truncated writing up to 255 bytes into a region of size 101 [-Wformat-truncation=]
179 | "XMLERR: Unknown variable"
| ^~~~~~~~~~~~~~~~~~~~~~~~~~
180 | ": '%s'.", lvar);
| ~~~~
os_xml/os_xml_variables.c:180:46: note: format string is defined here
180 | ": '%s'.", lvar);
| ^~
os_xml/os_xml_variables.c:178:33: note: ‘snprintf’ output between 30 and 285 bytes into a destination of size 128
178 | snprintf(_lxml->err, XML_ERR_LENGTH,
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
179 | "XMLERR: Unknown variable"
| ~~~~~~~~~~~~~~~~~~~~~~~~~~
180 | ": '%s'.", lvar);
| ~~~~~~~~~~~~~~~~
cc -I./external/compat -DMAX_AGENTS=2048 -DOSSECHIDS -DDEFAULTDIR="/var/ossec" -DUSER="ossec" -DREMUSER="ossecr" -DGROUPGLOBAL="ossec" -DMAILUSER="ossecm" -DLinux -DINOTIFY_ENABLED -DHAVE_SYSTEMD -DZLIB_SYSTEM -DUSE_PCRE2_JIT -DLIBOPENSSL_ENABLED -DLOCAL -Wall -Wextra -I./ -I./headers/ -c os_xml/os_xml_writer.c -o os_xml/os_xml_writer.o
ar -crs os_xml.a os_xml/os_xml_access.o os_xml/os_xml.o os_xml/os_xml_node_access.o os_xml/os_xml_variables.o os_xml/os_xml_writer.o
ranlib os_xml.a
cc -I./external/compat -DMAX_AGENTS=2048 -DOSSECHIDS -DDEFAULTDIR="/var/ossec" -DUSER="ossec" -DREMUSER="ossecr" -DGROUPGLOBAL="ossec" -DMAILUSER="ossecm" -DLinux -DINOTIFY_ENABLED -DHAVE_SYSTEMD -DZLIB_SYSTEM -DUSE_PCRE2_JIT -DLIBOPENSSL_ENABLED -DLOCAL -Wall -Wextra -I./ -I./headers/ os_maild/config.o os_maild/maild.o os_maild/mail_list.o os_maild/os_maild_client.o os_maild/sendcustomemail.o os_maild/sendmail.o os_crypto.a config.a shared.a os_net.a os_regex.a os_xml.a -lm -lpthread -lsystemd -lpcre2-8 -lssl -lcrypto -lz ./external/compat/imsg.c ./external/compat/imsg-buffer.c -o ossec-maild
/usr/bin/ld: cannot find -lsystemd
collect2: error: ld returned 1 exit status
make: *** [Makefile:930: ossec-maild] Error 1

Error 0x5.
Building error. Unable to finish the installation.`