Missing pkgconfig file when OTel plugin is enabled

[coryan]

What version of gRPC and what language are you using?

v1.63.0 C++

What operating system (Linux, Windows,...) and version?

Linux

What runtime / compiler are you using (e.g. python version or version of gcc)

Many, but let's say GCC 14 for these purposes

What did you do?

Compiled gRPC with:

curl -fsSL https://github.com/grpc/grpc/archive/v1.63.0.tar.gz | \
    tar -xzf - --strip-components=1 && \
    cmake \
      -DCMAKE_BUILD_TYPE=Release \
      -DBUILD_SHARED_LIBS=ON \
      -DgRPC_INSTALL=ON \
      -DgRPC_BUILD_TESTS=OFF \
      -DgRPC_ABSL_PROVIDER=package \
      -DgRPC_CARES_PROVIDER=package \
      -DgRPC_PROTOBUF_PROVIDER=package \
      -DgRPC_PROTOBUF_PACKAGE_TYPE=CONFIG \
      -DgRPC_RE2_PROVIDER=package \
      -DgRPC_SSL_PROVIDER=package \
      -DgRPC_ZLIB_PROVIDER=package \
      -DgRPC_OPENTELEMETRY_PROVIDER=package \
      -DgRPC_BUILD_GRPCPP_OTEL_PLUGIN=ON \
      -GNinja -S . -B cmake-out && \
    cmake --build cmake-out --target install && \
    ldconfig && cd /var/tmp && rm -fr build

What did you expect to see?

At least one *.pc file that the flags needed to use grpcpp_otel_plugin .

What did you see instead?

None of the *.pc files installed by gRPC seems to have the right configuration:

grep grpcpp_otel_plugin /usr/local/lib/pkgconfig/*.pc

Anything else we should know about your project / environment?

You know where to find me

[yashykt]

Fixed in #36686