/usr/bin/ld: cannot find -lEigen3::Eigen

[CallMeFrozenBanana]

Eigen is already installed.
Environment variable was set as: EIGEN3_INCLUDE_DIR=/usr/include/eigen3/Eigen
What happen ?= =

running install
running bdist_egg
running egg_info
writing src/pymagsac.egg-info/PKG-INFO
writing dependency_links to src/pymagsac.egg-info/dependency_links.txt
writing top-level names to src/pymagsac.egg-info/top_level.txt
reading manifest file 'src/pymagsac.egg-info/SOURCES.txt'
writing manifest file 'src/pymagsac.egg-info/SOURCES.txt'
installing library code to build/bdist.linux-x86_64/egg
running install_lib
running build_py
running build_ext
-- pybind11 v2.1.1
-- Configuring done
CMake Warning (dev) at lib/pybind11/tools/pybind11Tools.cmake:127 (add_library):
Policy CMP0028 is not set: Double colon in target name means ALIAS or
IMPORTED target. Run "cmake --help-policy CMP0028" for policy details.
Use the cmake_policy command to set the policy and suppress this warning.

Target "pymagsac" links to target "Eigen3::Eigen" but the target was not
found. Perhaps a find_package() call is missing for an IMPORTED target, or
an ALIAS target is missing?
Call Stack (most recent call first):
CMakeLists.txt:55 (pybind11_add_module)
This warning is for project developers. Use -Wno-dev to suppress it.

-- Generating done
-- Build files have been written to: /data/for_jr/pymagsac/build/temp.linux-x86_64-3.5
[ 33%] Linking CXX shared module ../lib.linux-x86_64-3.5/pymagsac/pymagsac.cpython-35m-x86_64-linux-gnu.so
/usr/bin/ld: cannot find -lEigen3::Eigen
collect2: error: ld returned 1 exit status
CMakeFiles/pymagsac.dir/build.make:137: recipe for target '../lib.linux-x86_64-3.5/pymagsac/pymagsac.cpython-35m-x86_64-linux-gnu.so' failed
make[2]: *** [../lib.linux-x86_64-3.5/pymagsac/pymagsac.cpython-35m-x86_64-linux-gnu.so] Error 1
CMakeFiles/Makefile2:67: recipe for target 'CMakeFiles/pymagsac.dir/all' failed
make[1]: *** [CMakeFiles/pymagsac.dir/all] Error 2
Makefile:83: recipe for target 'all' failed
make: *** [all] Error 2
Traceback (most recent call last):
File "setup.py", line 106, in
zip_safe=False,
File "/usr/local/lib/python3.5/dist-packages/setuptools/init.py", line 143, in setup
return distutils.core.setup(**attrs)
File "/usr/lib/python3.5/distutils/core.py", line 148, in setup
dist.run_commands()
File "/usr/lib/python3.5/distutils/dist.py", line 955, in run_commands
self.run_command(cmd)
File "/usr/lib/python3.5/distutils/dist.py", line 974, in run_command
cmd_obj.run()
File "/usr/local/lib/python3.5/dist-packages/setuptools/command/install.py", line 67, in run
self.do_egg_install()
File "/usr/local/lib/python3.5/dist-packages/setuptools/command/install.py", line 109, in do_egg_install
self.run_command('bdist_egg')
File "/usr/lib/python3.5/distutils/cmd.py", line 313, in run_command
self.distribution.run_command(command)
File "/usr/lib/python3.5/distutils/dist.py", line 974, in run_command
cmd_obj.run()
File "/usr/local/lib/python3.5/dist-packages/setuptools/command/bdist_egg.py", line 172, in run
cmd = self.call_command('install_lib', warn_dir=0)
File "/usr/local/lib/python3.5/dist-packages/setuptools/command/bdist_egg.py", line 158, in call_command
self.run_command(cmdname)
File "/usr/lib/python3.5/distutils/cmd.py", line 313, in run_command
self.distribution.run_command(command)
File "/usr/lib/python3.5/distutils/dist.py", line 974, in run_command
cmd_obj.run()
File "/usr/local/lib/python3.5/dist-packages/setuptools/command/install_lib.py", line 11, in run
self.build()
File "/usr/lib/python3.5/distutils/command/install_lib.py", line 109, in build
self.run_command('build_ext')
File "/usr/lib/python3.5/distutils/cmd.py", line 313, in run_command
self.distribution.run_command(command)
File "/usr/lib/python3.5/distutils/dist.py", line 974, in run_command
cmd_obj.run()
File "setup.py", line 38, in run
self.build_extension(ext)
File "setup.py", line 69, in build_extension
cwd=self.build_temp)
File "/usr/lib/python3.5/subprocess.py", line 581, in check_call
raise CalledProcessError(retcode, cmd)
subprocess.CalledProcessError: Command '['cmake', '--build', '.', '--config', 'Release', '--', '-j2']' returned non-zero exit status 2

[ducha-aiki]

Sorry, cannot help you here. Eigen linking might be tricky, but I cannot do remote debugging.

[Smellly]

Update my Eigen version from 3.2 to 3.3.9 (git clone && make && make install)
Then replace find_package(Eigen3 REQUIRED) to
list(APPEND CMAKE_INCLUDE_PATH "/usr/local/include")
find_package (Eigen3 3.3 REQUIRED NO_MODULE)

it works for me.

[ZeyingXuHuaWei]

Update my Eigen version from 3.2 to 3.3.9 (git clone && make && make install)
Then replace find_package(Eigen3 REQUIRED) to
list(APPEND CMAKE_INCLUDE_PATH "/usr/local/include")
find_package (Eigen3 3.3 REQUIRED NO_MODULE)

it works for me.

This works for me. Thank you very much

[allenthreee]

Update my Eigen version from 3.2 to 3.3.9 (git clone && make && make install) Then replace find_package(Eigen3 REQUIRED) to list(APPEND CMAKE_INCLUDE_PATH "/usr/local/include") find_package (Eigen3 3.3 REQUIRED NO_MODULE)

it works for me.

it works for me too, though i don't know why this works

[Janebek]

Update my Eigen version from 3.2 to 3.3.9 (git clone && make && make install) Then replace find_package(Eigen3 REQUIRED) to list(APPEND CMAKE_INCLUDE_PATH "/usr/local/include") find_package (Eigen3 3.3 REQUIRED NO_MODULE)

it works for me.

omg！！Thank you so much！I finally solved this proble after 3 days searching...

[ismetdagli]

I spent ~2-3 hours on this problem before finding this comment and it is solved!

Note to others: My include path was different. If somebody reads this commend and the solution does not work, be careful with your includes path!