Minimal project compilation error

[MaxStotsky]

I trying to compile simple project using Caffe library. But I received compile error.

I create simple cpp file (test.cpp):

#include <caffe/caffe.hpp>

int main(int /*argc*/, char ** /*argv*/)
{
        caffe::SolverParameter solver_param;
        return 0;
}

And try to compile it:

$ c++ -DCPU_ONLY -I/usr/include/opencv4 -o test.o -c test.cpp

I have 155 errors in compile logs. All errors in caffe.pb.h file about Protobuf API:

/usr/include/caffe/proto/caffe.pb.h:49:51: error: ‘AuxiliaryParseTableField’ in namespace ‘google::protobuf::internal’ does not name a type; did you mean ‘AuxillaryParseTableField’?
   49 | static const ::PROTOBUF_NAMESPACE_ID::internal::AuxiliaryParseTableField aux[]
      | ^~~~~~~~~~~~~~~~~~~~~~~~
      | AuxillaryParseTableField
/usr/include/caffe/proto/caffe.pb.h:336:30: error: ‘ConstStringParam’ is not a member of ‘google::protobuf’
  336 | ::PROTOBUF_NAMESPACE_ID::ConstStringParam name, FillerParameter_VarianceNorm* value) {
      | ^~~~~~~~~~~~~~~~
/usr/include/caffe/proto/caffe.pb.h:336:81: error: expected primary-expression before ‘*’ token
  336 | ::PROTOBUF_NAMESPACE_ID::ConstStringParam name, FillerParameter_VarianceNorm* value) {
      | ^
...

I have installed libprotobuf-dev version 3.12.4-1ubuntu3:

$ apt-cache policy libprotobuf-dev
libprotobuf-dev:
  Installed: 3.12.4-1ubuntu3
  Candidate: 3.12.4-1ubuntu3
  Version table:
 *** 3.12.4-1ubuntu3 500
        500 http://ua.archive.ubuntu.com/ubuntu impish/main amd64 Packages
        100 /var/lib/dpkg/status

What should I do to compile my test.cpp?

ProblemType: Bug
DistroRelease: Ubuntu 21.10
Package: caffe (not installed)
ProcVersionSignature: Ubuntu 5.13.0-25.26-generic 5.13.19
Uname: Linux 5.13.0-25-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu71
Architecture: amd64
CasperMD5CheckResult: unknown
CurrentDesktop: ubuntu:GNOME
Date: Fri Feb 4 18:37:26 2022
InstallationDate: Installed on 2020-10-20 (472 days ago)
InstallationMedia: Ubuntu 20.10 "Groovy Gorilla" - Beta amd64 (20200930)
ProcEnviron:
 TERM=screen-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=uk_UA.UTF-8
 SHELL=/bin/zsh
RebootRequiredPkgs: Error: path contained symlinks.
SourcePackage: caffe
UpgradeStatus: Upgraded to impish on 2021-10-08 (118 days ago)

[MaxStotsky (maxstotsky)]

I manually build the debian package in my environment. It works now.

Steps to fix it:

apt-get source libcaffe-dev
sudo apt build-dep libcaffe-dev
cd caffe-1.0.0+git20180821.99bd997
dpkg-buildpackage -tc
sudo dpkg -i ../libcaffe-dev_1.0.0+git20180821.99bd997-8build2_amd64.deb