New comment by kawaiiamber on void-packages repository

https://github.com/void-linux/void-packages/pull/28330#issuecomment-770778218

Comment:
```
protoc --cpp_out=protobuf --proto_path=protobuf protobuf/vector_tile.proto
make: protoc: No such file or directory
make: *** [Makefile:432: protobuf/vector_tile.pb.h] Error 127
=> ERROR: QtPBFImagePlugin-2.3_1: do_build: '${make_cmd} ${makejobs} ${make_build_args} ${make_build_target} CC="$CC" CXX="$CXX" LINK="$CXX"' exited with 2
=> ERROR:   in do_build() at common/build-style/qmake.sh:136
Error: Process completed with exit code 1.
```
Their `Makefile` is trying to use a `protoc` command. Use `xlocate` to find out where it's at.
```sh
[amber@otaku ~]$ xlocate /usr/bin/protoc
kio-5.78.0_1    /usr/bin/protocoltojson
protobuf-c-1.3.3_5      /usr/bin/protoc-c -> /usr/bin/protoc-gen-c
protobuf-c-1.3.3_5      /usr/bin/protoc-gen-c
protobuf-vala-0.1.0_3   /usr/bin/protoc-gen-vala
protobuf18-3.7.1_3      /usr/bin/protoc
protobuf23-3.12.4_1     /usr/bin/protoc
protobuf24-3.13.0.1_1   /usr/bin/protoc
protobuf25-3.14.0_1     /usr/bin/protoc
```
Looks like you might need the `protobuf` package.