Thanks @xkaraman, the last change works properly. I have properly packaged sources for RHEL 10 and Fedora 41. But when started build for CentOS 9 then catch this error ``` [2025-01-27T17:22:50.142Z] [ 65%] Building C object src/modules/json/CMakeFiles/json.dir/json_funcs.c.o [2025-01-27T17:22:50.146Z] cd /root/rpmbuild/BUILD/kamailio-6.1.0-dev0/redhat-linux-build/src/modules/json && /usr/bin/gcc -DADAPTIVE_WAIT -DADAPTIVE_WAIT_LOOPS=1024 -DARCH="x86_64" -DCC_GCC_LIKE_ASM -DCFG_DIR="/etc/kamailio/" -DCOMPILER=""gcc 11.5.0"" -DDBG_SR_MEMORY -DDISABLE_NAGLE -DDNS_IP_HACK -DFAST_LOCK -DFMSTATS -DF_MALLOC -DHAVE_ALLOCA_H -DHAVE_EPOLL -DHAVE_GETHOSTBYNAME2 -DHAVE_IP_MREQN -DHAVE_MSGHDR_MSG_CONTROL -DHAVE_MSG_NOSIGNAL -DHAVE_RESOLV_RES -DHAVE_SCHED_SETSCHEDULER -DHAVE_SCHED_YIELD -DHAVE_SELECT -DHAVE_SIGIO_RT -DHAVE_TIMEGM -DHAVE_UNION_SEMUN -DKMSTATS -DKSR_PTHREAD_MUTEX_SHARED -DMALLOC_STATS -DMOD_NAME="json" -DMOD_NAMEID=json -DNAME="kamailio" -DOS=Linux -DOS_QUOTED="Linux" -DPKG_MALLOC -DQ_MALLOC -DRAW_SOCKS -DRUN_DIR="/run/kamailio" -DSHARE_DIR="/usr/share/kamailio/" -DSHM_MMAP -DSIGINFO64_WORKAROUND -DSTATISTICS -DTLSF_MALLOC -DTLS_HOOKS -DUSE_DNS_CACHE -DUSE_DNS_FAILOVER -DUSE_DST_BLOCKLIST -DUSE_MCAST -DUSE_NAPTR -DUSE_RAW_SOCKS -DUSE_SCTP -DUSE_TCP -DUSE_TLS -DVERSION="6.1.0-dev0" -DVERSIONVAL=6001000 -D__CPU_x86_64 -D__OS_linux -Djson_EXPORTS -O2 -flto=auto -ffat-lto-objects -fexceptions -g -grecord-gcc-switches -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -fstack-protector-strong -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -m64 -march=x86-64-v2 -mtune=generic -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection -DNDEBUG -std=gnu11 -fPIC -ffile-prefix-map=/root/rpmbuild/BUILD/kamailio-6.1.0-dev0/src/modules/json/= -fPIC -Wall -funroll-loops -Wcast-align -Werror=implicit-function-declaration -Werror=implicit-int -m64 -minline-all-stringops -falign-loops -ftree-vectorize -fno-strict-overflow -mtune=generic -MD -MT src/modules/json/CMakeFiles/json.dir/json_funcs.c.o -MF CMakeFiles/json.dir/json_funcs.c.o.d -o CMakeFiles/json.dir/json_funcs.c.o -c /root/rpmbuild/BUILD/kamailio-6.1.0-dev0/src/modules/json/json_funcs.c [2025-01-27T17:22:50.284Z] /root/rpmbuild/BUILD/kamailio-6.1.0-dev0/src/modules/json/json_funcs.c:26:10: fatal error: json.h: No such file or directory [2025-01-27T17:22:50.284Z] 26 | #include <json.h> [2025-01-27T17:22:50.284Z] | ^~~~~~~~ [2025-01-27T17:22:50.301Z] compilation terminated. [2025-01-27T17:22:50.326Z] gmake[2]: *** [src/modules/json/CMakeFiles/json.dir/build.make:79: src/modules/json/CMakeFiles/json.dir/json_funcs.c.o] Error 1 [2025-01-27T17:22:50.326Z] gmake[2]: Leaving directory '/root/rpmbuild/BUILD/kamailio-6.1.0-dev0/redhat-linux-build' [2025-01-27T17:22:50.331Z] gmake[1]: *** [CMakeFiles/Makefile2:35943: src/modules/json/CMakeFiles/json.dir/all] Error 2 [2025-01-27T17:22:50.332Z] gmake[1]: *** Waiting for unfinished jobs.... [2025-01-27T17:22:50.531Z] gmake[2]: Leaving directory '/root/rpmbuild/BUILD/kamailio-6.1.0-dev0/redhat-linux-build' [2025-01-27T17:22:53.719Z] [ 65%] Built target ims_usrloc_scscf [2025-01-27T17:22:53.723Z] gmake[1]: Leaving directory '/root/rpmbuild/BUILD/kamailio-6.1.0-dev0/redhat-linux-build' [2025-01-27T17:22:53.737Z] gmake: *** [Makefile:159: all] Error 2 [2025-01-27T17:22:53.748Z] error: Bad exit status from /var/tmp/rpm-tmp.6ObW3A (%build) [2025-01-27T17:22:53.749Z] ```