Target "badslam_test" links to target "Eigen3::Eigen" but the target was not found.

[lql0602]

Thanks for your work. However, I cannot build it now. I just input: cmake -DCMAKE_BUILD_TYPE=RelWithDebInfo -DCMAKE_CUDA_FLAGS="-arch=sm_61" ..

CMake Error at applications/badslam/CMakeLists.txt:200 (add_executable):
Target "badslam_test" 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?

CMake Error at applications/badslam/CMakeLists.txt:200 (add_executable):
Target "badslam_test" 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?

CMake Error at applications/badslam/CMakeLists.txt:200 (add_executable):
Target "badslam_test" 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?

CMake Error at applications/badslam/CMakeLists.txt:200 (add_executable):
Target "badslam_test" 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?

CMake Error at applications/badslam/CMakeLists.txt:180 (add_executable):
Target "badslam" 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?

CMake Error at applications/badslam/CMakeLists.txt:180 (add_executable):
Target "badslam" 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?

CMake Error at applications/badslam/CMakeLists.txt:180 (add_executable):
Target "badslam" 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?

CMake Error at applications/badslam/CMakeLists.txt:180 (add_executable):
Target "badslam" 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?

CMake Error at applications/badslam/CMakeLists.txt:56 (add_library):
Target "badslam_baselib" 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?

CMake Error at applications/badslam/CMakeLists.txt:56 (add_library):
Target "badslam_baselib" 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?

CMake Error at applications/badslam/CMakeLists.txt:56 (add_library):
Target "badslam_baselib" 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?

CMake Error at applications/badslam/CMakeLists.txt:56 (add_library):
Target "badslam_baselib" 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?

but i have instaledl eigen3
-modversion eigen3
3.3.7

[puzzlepaint]

This seems like there must be some error in locating the Eigen3 installation. Badslam's CMakeLists.txt does have a find_package call for it here:

badslam/CMakeLists.txt

Line 72 in 32e47be

find_package(Eigen3 REQUIRED)

Perhaps Eigen3 is installed in a non-standard location on your system? In that case, you could try specifying its path to CMake manually (for example, by checking with ccmake and filling in the Eigen3-related variables that are set to NOT_FOUND)

[neilzhuu]

Hello @lql0602, I got the same problem. Did you solve it?

[neilzhuu]

I replace find_package(Eigen3 REQUIRED) with find_package(Eigen3 REQUIRED NO_MODULE) and finally it compiles well.

[puzzlepaint]

@neilzhuu Thanks for the update. Eigen also seems to recommend using NO_MODULE (see Using Eigen in CMake Projects), so I committed the change to the repository.