json pointer : syslog-ng compilation error

Question

I want to install syslog-ng on SUSE Linux Enterprise Desktop 15 SP2 which is offline. I downloads file on github https://github.com/syslog-ng/syslog-ng/releases/tag/syslog-ng-3.35.1. Uploaded to my server. Uncompressed to run ./configure which worked, but when I tried make, I have this error.

  CCLD     modules/examples/sources/libthreaded-random-generator.la
  CCLD     modules/examples/libexamples.la
  CC       modules/getent/libtfgetent_la-tfgetent.lo
  CCLD     modules/getent/libtfgetent.la
  CC       modules/graphite/libgraphite_la-graphite-plugin.lo
  CC       modules/graphite/libgraphite_la-graphite-output.lo
  CCLD     modules/graphite/libgraphite.la
  CC       modules/hook-commands/libhook_commands_la-hook-commands.lo
  CC       modules/hook-commands/libhook_commands_la-hook-commands-grammar.lo
  CC       modules/hook-commands/libhook_commands_la-hook-commands-parser.lo
  CC       modules/hook-commands/libhook_commands_la-hook-commands-plugin.lo
  CCLD     modules/hook-commands/libhook-commands.la
  CC       modules/json/libjson_plugin_la-format-json.lo
  CC       modules/json/libjson_plugin_la-json-parser.lo
  CC       modules/json/libjson_plugin_la-json-parser-grammar.lo
  CC       modules/json/libjson_plugin_la-json-parser-parser.lo
  CC       modules/json/libjson_plugin_la-dot-notation.lo
  CC       modules/json/libjson_plugin_la-json-plugin.lo
make CFLAGS="-O2 -g -pthread  -Wno-error" -C lib/jsonc
make  all-recursive
Making all in .
  CC       arraylist.lo
  CC       debug.lo
  CC       json_c_version.lo
  CC       json_object.lo
  CC       json_object_iterator.lo
  CC       json_pointer.lo
json_pointer.c: In function ‘json_pointer_getf’:
json_pointer.c:211:7: warning: implicit declaration of function ‘vasprintf’; did you mean ‘vsprintf’? [-Wimplicit-function-declaration]
  rc = vasprintf(&path_copy, path_fmt, args);
       ^~~~~~~~~
       vsprintf
  CC       json_tokener.lo
  CC       json_util.lo
  CC       json_visit.lo
  CC       linkhash.lo
  CC       printbuf.lo
printbuf.c: In function ‘sprintbuf’:
printbuf.c:132:16: warning: implicit declaration of function ‘vasprintf’; did you mean ‘vsprintf’? [-Wimplicit-function-declaration]
     if((size = vasprintf(&t, msg, ap)) < 0) { va_end(ap); return -1; }
                ^~~~~~~~~
                vsprintf
  CC       random_seed.lo
  CC       strerror_override.lo
  CCLD     libjson-c.la
Making all in tests
make[5]: Nothing to be done for 'all'.
  CCLD     modules/json/libjson-plugin.la
  CC       modules/kvformat/libkvformat_la-format-welf.lo
  CC       modules/kvformat/libkvformat_la-kv-parser.lo
  CC       modules/kvformat/libkvformat_la-linux-audit-parser.lo
  CC       modules/kvformat/libkvformat_la-kv-parser-grammar.lo
  CC       modules/kvformat/libkvformat_la-kv-parser-parser.lo
  CC       modules/kvformat/libkvformat_la-kvformat-plugin.lo
  CCLD     modules/kvformat/libkvformat.la
.
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I don't know which library is missing. Can you help me figuring out which library should I install?