[Caffe2] How to link Caffe2 in cmake file for C++ compilation?

[pjavia-iterativescopes]

I tried-->find_package(Caffe2 REQUIRED)

Here is the error

By not providing "FindCaffe2.cmake" in CMAKE_MODULE_PATH this project has
asked CMake to find a package configuration file provided by "Caffe2", but
CMake did not find one.

Could not find a package configuration file provided by "Caffe2" with any
of the following names:

Caffe2Config.cmake
caffe2-config.cmake

Add the installation prefix of "Caffe2" to CMAKE_PREFIX_PATH or set
"Caffe2_DIR" to a directory containing one of the above files. If "Caffe2"
provides a separate development package or SDK, be sure it has been
installed.

[beichen2012]

try:
list(APPEND CMAKE_PREFIX_PATH "/your caffe2 install path")
find_package(Caffe2)

[pjavia-iterativescopes]

I found Caffe2Config.cmake . The problem is there are many locations where its located and I tried setting Caffe2_DIR with all possible location but the real problem is all the header files relative paths are set properly. I mean if I got to Caffe2/core/init.h there are include files whose relative path is not accurate. How to tackle this ?
Here is folder structure.
If I set Caffe2Config.cmake from build folder it throws error as the relative path inside the file are messed up.
pytorch
--aten
--binaries
--build/Caffe2Config.cmake
--c10
--caffe2/core
--cmake
--docker
--docs
--modules
--scripts
--submodules
--test
--torch/share/cmake/Caffe2Config.cmake

[pjavia-iterativescopes]

@beichen2012 The Caffe2_DIR = ~/pytorch/build/Caffe2Config.cmake does not relative path correct as there is no folder named “public” in the current directory

Also if I set Caffe2_DIR= ~/pytorch/torch/share/cmake/Caffe2Config.cmake then also cmake does not include and files. I had to manually include it.

Finally I am getting linking errors. Which are the libraries I should link and in which order. Please guide I am working hard just to run a simple code using Caffe2 C++ more than a week.

[beichen2012]

@beichen2012 The Caffe2_DIR = ~/pytorch/build/Caffe2Config.cmake does not relative path correct as there is no folder named “public” in the current directory

Also if I set Caffe2_DIR= ~/pytorch/torch/share/cmake/Caffe2Config.cmake then also cmake does not include and files. I had to manually include it.

Finally I am getting linking errors. Which are the libraries I should link and in which order. Please guide I am working hard just to run a simple code using Caffe2 C++ more than a week.

cd your pytorch source code dir, then mkdir build, cd build , cmake -DCMAKE_INSTALL_PREFIX=/opt/Caffe2 .. , then: make && sudo make install.
the path: /opt/Caffe2 IS YOUR CAFFE2 INSTALL PATH,
list(APPEND CMAKE_PREFIX_PATH "/opt/Caffe2"),
THEN: find_package(Caffe2),
THAT WILL BE OK .

please refer to : "https://github.com/beichen2012/testMultiThreadCaffe2"