make[4]: Entering directory '/build/lede-17.01/slaves/phase2/arc_archs/build/sdk/build_dir/target-arc_archs_uClibc-1.0.14/syslog-ng-3.8.1'
make --no-print-directory all-recursive
  CC       modules/native/modules_native_libsyslog_ng_native_connector_a-native-grammar.o
In file included from ./lib/logmsg/logmsg.h:31:0,
                 from ./lib/parser/parser-expr.h:28,
                 from modules/native/native-parser.h:30,
                 from modules/native/native-grammar.y:26:
./lib/serialize.h: In function 'serialize_read_uint32_array':
./lib/serialize.h:120:7: error: 'for' loop initial declarations are only allowed in C99 mode
       for (int i = 0; i < elements; i++)
       ^
./lib/serialize.h:120:7: note: use option -std=c99 or -std=gnu99 to compile your code
Makefile:8825: recipe for target 'modules/native/modules_native_libsyslog_ng_native_connector_a-native-grammar.o' failed
make[6]: *** [modules/native/modules_native_libsyslog_ng_native_connector_a-native-grammar.o] Error 1
Makefile:13207: recipe for target 'all-recursive' failed
make[5]: *** [all-recursive] Error 1
Makefile:5434: recipe for target 'all' failed
make[4]: *** [all] Error 2
make[4]: Leaving directory '/build/lede-17.01/slaves/phase2/arc_archs/build/sdk/build_dir/target-arc_archs_uClibc-1.0.14/syslog-ng-3.8.1'
Makefile:76: recipe for target '/build/lede-17.01/slaves/phase2/arc_archs/build/sdk/build_dir/target-arc_archs_uClibc-1.0.14/syslog-ng-3.8.1/.built' failed
make[3]: *** [/build/lede-17.01/slaves/phase2/arc_archs/build/sdk/build_dir/target-arc_archs_uClibc-1.0.14/syslog-ng-3.8.1/.built] Error 2