grpc compilation error

[mereacre]

I get this when compiling:
[ 0%] Generating reverse_access.pb.cc, reverse_access.pb.h, reverse_access.grpc.pb.cc, reverse_access.grpc.pb.h
Scanning dependencies of target reverse_grpc_proto
[ 1%] Building CXX object CMakeFiles/reverse_grpc_proto.dir/reverse_access.grpc.pb.cc.o
In file included from /usr/include/google/protobuf/arenastring.h:38,
from /home/alex/Projects/EDGESec/build/reverse_access.pb.h:24,
from /home/alex/Projects/EDGESec/build/reverse_access.grpc.pb.cc:5:
/usr/local/include/google/protobuf/stubs/fastmem.h:54:10: fatal error: google/protobuf/port_def.inc: No such file or directory
54 | #include <google/protobuf/port_def.inc>
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
compilation terminated.
make[2]: *** [CMakeFiles/reverse_grpc_proto.dir/build.make:78: CMakeFiles/reverse_grpc_proto.dir/reverse_access.grpc.pb.cc.o] Error 1
make[1]: *** [CMakeFiles/Makefile2:823: CMakeFiles/reverse_grpc_proto.dir/all] Error 2
make: *** [Makefile:163: all] Error 2

$ protoc --version
libprotoc 3.6.1

[mereacre]

-- Found GRPC: /usr/local/include (found version "1.31.1")
-- Found Protobuf: /usr/lib/x86_64-linux-gnu/libprotobuf.so;-lpthread (found version "3.6.1")

[mereacre]

It doesn't work with both pre compiled and with the compilation on.

The problem is the missing file google/protobuf/port_def.inc

[mereacre]

Correction: It doesn't work with libproto-dev deb installed. It does work with grpc source compilation.

[aloisklink]

My gut feeling is that your version of Protobuf was installed via apt, while your version of GRPC was installed from source, and is therefore newer than Protobuf.

I'd recommend deleting GRPC and just using apt's GRPC

You could try making a PR (or pushing to main) and letting the GitHub Action CI/CD try compiling it.

Or use pbuilder. pbuilder starts from a blank image every time you build a .deb, so it's super slow (no-caching), but it does mean that the environment is clean each time.

[aloisklink]

Hey Alex, I just tried checking out main (commit 3ef2888), deleted build, and rebuilt the entire project and it worked fine.

All tests ran too.

These are the commands I ran:

git switch main
git pull
rm -r build/
# build using multiprocesses
cmake -B build/ -S . -DLIB_MAKEFLAGS="--jobs=$(nproc)"
cmake --build build/ -j4
cmake --build build/ --target test -j4

I'm fairly certain the issue is that you're mixing up having libproto installed from deb, and GRPC installed from src.

Either you should have both protobuf and GRPC from src, or both protobuf and GRPC from apt.

Is there any chance you can delete the build directory, run the giant sudo apt install blah blah blah in the README and recompile?

[mereacre]

I did remove the build and run again and it work. But it was after I installed the GRPC from apt. So, I'm not sure that it is still from compiling from source. But you might be right there are problem with grpc and protobuf when it is compiled and installed from apt.

[mereacre]

I will keep the issue open for now while I check the problem.

[aloisklink]

Yah, to be honest, if you are building GRPC from source, it should use automatically build protobuf from source too (or at least warn you). I can have a look into it and add a warning.

[aloisklink]

Hmmmm, that's super bizarre.

I just tried building GRPC from source (with both protobuf and GRPC installed via apt as well), e.g:

git switch main
git pull
rm -r build/
# build using multiprocesses
cmake -B build/ -S . -DLIB_MAKEFLAGS="--jobs=$(nproc)" -DBUILD_GRPC_LIB=ON
cmake --build build/ -j4
cmake --build build/ --target test -j4

It took forever to download and compile, but it worked! If you build GRPC from source, by default it builds it's own Protobuf (unless you define gRPC_PROTOBUF_PROVIDER and set it to something else).

So I'm not really sure how you got a broken config 🤷