get_target_property() called with non-existent target "Sophus::Sophus"

[kintzhao]

CMake Error at CMakeLists.txt:101 (get_target_property):
get_target_property() called with non-existent target "Sophus::Sophus".
#1

I have the same question, which version of sophus is necessary ? my sophus is a621ff2e56c56c839a6c40418d42c .

1. when i do with readme, cmake with:

---

-- Search Dependency: Sophus
CMake Error at CMakeLists.txt:101 (get_target_property):
get_target_property() called with non-existent target "Sophus::Sophus".

2. when i ignore the line of 101 in CMakeLists.txt.. camke with error

---

[ 43%] Building CXX object minisam/CMakeFiles/minisam.dir/geometry/projection.cpp.o
In file included from /home/yhzhao/test_git/minisam/minisam/geometry/projection.cpp:9:0:
/home/yhzhao/test_git/minisam/minisam/geometry/projection.h:13:26: fatal error: sophus/se3.hpp: No such file or directory
compilation terminated.

[log00544]

According to my installation experience of minisam, Sophus is not optional, however necessary.
And Sophus needs 'eigen3' dependency of version 3.3.0+. On ubuntu, eigen3 must be installed with source code manually, which means not even with cmake or something, but just move it to /usr/include.
Sophus git version 0c84aed is fine btw.

[rancheng]

@kintzhao you probability built your Sophus library with an older version.

simply modify your code to #include <sophus/se3.h> rather than #include <sophus/se3.hpp>
similar to se2.hpp and other modules in Sophus.

make sure your CMakeList.txt commented out this line:

# get_target_property(Sophus_INCLUDE_DIR Sophus::Sophus INTERFACE_INCLUDE_DIRECTORIES)

Then, in projection.h

// #include <sophus/se3.hpp>
#include <sophus/se3.h>

find all other modules that included the .hpp and change them all.

[rancheng]

After tried to refactor this whole project, I found it's impossible to migrate into older Sophus version, simply build a newer Sophus and don't waste your time.

[rancheng]

@log00544 is right, and please note that if you want to build Sophus against Eigen 3.3, remember to build ceres against eigen3.3 first.