Could not find a package configuration file provided by "Eigen3"

[Livesoso]

I want to install the pangolin in my computer with ubuntu18.04 When I cmake , I got the error -- The C compiler identification is GNU 7.5.0 -- The CXX compiler identification is GNU 7.5.0 -- 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 -- Setting build type to 'Release' as none was specified. CMake Warning at CMakeLists.txt:75 (message): Building Tests requested, but Catch2 library not found.

CMake Error at components/pango_geometry/CMakeLists.txt:3 (find_package): Could not find a package configuration file provided by "Eigen3" with any of the following names:

Eigen3Config.cmake
eigen3-config.cmake

Add the installation prefix of "Eigen3" to CMAKE_PREFIX_PATH or set "Eigen3_DIR" to a directory containing one of the above files. If "Eigen3" provides a separate development package or SDK, be sure it has been installed. Call Stack (most recent call first): CMakeLists.txt:93 (include)

-- Configuring incomplete, errors occurred! See also "/home/zyx/Documents/Pangolin/build/CMakeFiles/CMakeOutput.log". See also "/home/zyx/Documents/Pangolin/build/CMakeFiles/CMakeError.log". I see the CMakeList.txt ,I didn't find any information about Eigen My Eigen's version is 3.2.10 Please help me. Thanks

[stevenlovegrove]

Have you tried the instructions provided in the output?

[christian-rauch]

@Livesoso Do you have libeigen3-dev installed?