./output.cc:327:11: warning: format string is empty [-Wformat-zero-length]
          "",
          ^~
./output.cc:380:11: warning: format string is empty [-Wformat-zero-length]
          "",
          ^~
./output.cc:441:11: warning: format string is empty [-Wformat-zero-length]
          "",
          ^~
./output.cc:842:11: warning: format string is empty [-Wformat-zero-length]
          "",
          ^~
./output.cc:1998:11: warning: format string is empty [-Wformat-zero-length]
          "",
          ^~
5 warnings generated.
gperf/3.1: WARN: build_type setting should be defined.
gperf/3.1: WARN: build_type setting should be defined.
gperf/3.1 (test package): WARN: This conanfile has no build step