" Could not find a package configuration file provided by "pybind11" " while installing pangolin.

[threedee003]

I am trying to install pangolin for implementing the SLAM algorithm, but the cmake build is failing due to absence of the Pybind11 .cmake file. How to resolve this issue ?

`

bikram:~/pangolin/pangolin/build$ cmake ..
-- The C compiler identification is GNU 9.4.0
-- The CXX compiler identification is GNU 9.4.0
-- Check for working C compiler: /usr/bin/cc
-- Check for working C compiler: /usr/bin/cc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Detecting C compile features
-- Detecting C compile features - done
-- Check for working CXX compiler: /usr/bin/c++
-- Check for working CXX compiler: /usr/bin/c++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
Build type not set (defaults to release)
-DCMAKE_BUILD_TYPE=Debug for debug
CMake Warning (dev) at /usr/share/cmake-3.16/Modules/FindOpenGL.cmake:275 (message):
Policy CMP0072 is not set: FindOpenGL prefers GLVND by default when
available. Run "cmake --help-policy CMP0072" for policy details. Use the
cmake_policy command to set the policy and suppress this warning.

FindOpenGL found both a legacy GL library:

OPENGL_gl_LIBRARY: /usr/lib/x86_64-linux-gnu/libGL.so

and GLVND libraries for OpenGL and GLX:

OPENGL_opengl_LIBRARY: /usr/lib/x86_64-linux-gnu/libOpenGL.so
OPENGL_glx_LIBRARY: /usr/lib/x86_64-linux-gnu/libGLX.so

OpenGL_GL_PREFERENCE has not been set to "GLVND" or "LEGACY", so for
compatibility with CMake 3.10 and below the legacy GL library will be used.
Call Stack (most recent call first):
src/CMakeLists.txt:155 (find_package)
This warning is for project developers. Use -Wno-dev to suppress it.

-- Found X11: /usr/include
-- Looking for XOpenDisplay in /usr/lib/x86_64-linux-gnu/libX11.so;/usr/lib/x86_64-linux-gnu/libXext.so
-- Looking for XOpenDisplay in /usr/lib/x86_64-linux-gnu/libX11.so;/usr/lib/x86_64-linux-gnu/libXext.so - found
-- Looking for gethostbyname
-- Looking for gethostbyname - found
-- Looking for connect
-- Looking for connect - found
-- Looking for remove
-- Looking for remove - found
-- Looking for shmat
-- Looking for shmat - found
-- Looking for IceConnectionNumber in ICE
-- Looking for IceConnectionNumber in ICE - found
-- Python Found and Enabled
-- Eigen Found and Enabled
-- libdc1394 Found and Enabled
-- V4L Found and Enabled
-- Performing Test HAVE_FFMPEG_MAX_ANALYZE_DURATION2
-- Performing Test HAVE_FFMPEG_MAX_ANALYZE_DURATION2 - Failed
-- Performing Test HAVE_FFMPEG_AVFORMAT_ALLOC_OUTPUT_CONTEXT2
-- Performing Test HAVE_FFMPEG_AVFORMAT_ALLOC_OUTPUT_CONTEXT2 - Success
-- Performing Test HAVE_FFMPEG_AVPIXELFORMAT
-- Performing Test HAVE_FFMPEG_AVPIXELFORMAT - Success
-- ffmpeg Found and Enabled
-- Found PkgConfig: /usr/bin/pkg-config (found version "0.29.1")
-- OpenNI Found and Enabled
-- OpenNI2 Found and Enabled
-- libpng Found and Enabled
-- libjpeg Found and Enabled
-- libtiff Found and Enabled
-- libopenexr Found and Enabled
-- libzstd Found and Enabled
-- Found Doxygen: /usr/bin/doxygen (found version "1.8.17") found components: doxygen dot
CMake Warning at python/CMakeLists.txt:3 (find_package):
By not providing "Findpybind11.cmake" in CMAKE_MODULE_PATH this project has
asked CMake to find a package configuration file provided by "pybind11",
but CMake did not find one.

Could not find a package configuration file provided by "pybind11" with any
of the following names:

pybind11Config.cmake
pybind11-config.cmake

Add the installation prefix of "pybind11" to CMAKE_PREFIX_PATH or set
"pybind11_DIR" to a directory containing one of the above files. If
"pybind11" provides a separate development package or SDK, be sure it has
been installed.

-- Found PythonInterp: /usr/bin/python3.6 (found version "3.6.9")
CMake Error at external/pybind11/tools/FindPythonLibsNew.cmake:95 (message):
Python config failure:

Traceback (most recent call last):

File "<string>", line 1, in <module>

ImportError: cannot import name 'sysconfig'

Call Stack (most recent call first):
external/pybind11/tools/pybind11Tools.cmake:16 (find_package)
python/CMakeLists.txt:9 (include)

-- Configuring incomplete, errors occurred!
See also "/home/bikram/pangolin/pangolin/build/CMakeFiles/CMakeOutput.log".
See also "/home/bikram/pangolin/pangolin/build/CMakeFiles/CMakeError.log".

`