Question / Help Error while building OBS: cmake error

[ashjk]

I want to build OBS for debian. But i'm getting errors like in

In file included from obs-studio/plugins/obs-outputs/librtmp/rtmp.c:32:0:
obs-studio/plugins/obs-outputs/librtmp/rtmp.c: In function âRTMP_TLS_Acceptâ:
obs-studio/plugins/obs-outputs/librtmp/rtmp_sys.h:140:2: error: implicit declaration of function âmbedtls_ssl_conf_dh_param_binâ [-Werror=implicit-function-declaration]
mbedtls_ssl_conf_dh_param_bin(ctx->conf,\
^
obs-studio/plugins/obs-outputs/librtmp/rtmp.c:1016:5: note: in expansion of macro âTLS_serverâ
TLS_server(srv_ctx, r->m_sb.sb_ssl);
^~~~~~~~~~
cc1: some warnings being treated as errors
plugins/obs-outputs/CMakeFiles/obs-outputs.dir/build.make:662: recipe for target 'plugins/obs-outputs/CMakeFiles/obs-outputs.dir/librtmp/rtmp.c.o' failed
make[2]: *** [plugins/obs-outputs/CMakeFiles/obs-outputs.dir/librtmp/rtmp.c.o] Error 1
CMakeFiles/Makefile2:1335: recipe for target 'plugins/obs-outputs/CMakeFiles/obs-outputs.dir/all' failed
make[1]: *** [plugins/obs-outputs/CMakeFiles/obs-outputs.dir/all] Error 2
Makefile:149: recipe for target 'all' failed
make: *** [all] Error 2

Any idea what might be missing here