Could not find Eigen3 when configuring Tudat, eigen folder is empty

[mvandenbroeck]

Hi,

I'm setting up Tudat on Windows 10 and put the tudatBundle on the D drive. When configuring Tudat, I get the following error message in the General Messages box of Qt Creator:

Could NOT find Eigen3 (missing: EIGEN3_INCLUDE_DIR EIGEN3_OK )

The full output is:

---

Running "C:\Program Files\CMake\bin\cmake.exe D:/tudatBundle_mvdb "-GCodeBlocks - MinGW Makefiles" "-DCMAKE_CXX_COMPILER:STRING=C:/Qt/Tools/mingw492_32/bin/g++.exe" "-DCMAKE_C_COMPILER:STRING=" "-DCMAKE_PREFIX_PATH:STRING=%{Qt:QT_INSTALL_PREFIX}" "-DQT_QMAKE_EXECUTABLE:STRING="" in D:\tudatBundle_mvdb-build. -- The C compiler identification is GNU 4.9.2 -- The CXX compiler identification is GNU 4.9.2 -- Check for working C compiler: C:/Qt/Tools/mingw492_32/bin/gcc.exe -- Check for working C compiler: C:/Qt/Tools/mingw492_32/bin/gcc.exe -- 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: C:/Qt/Tools/mingw492_32/bin/g++.exe -- Check for working CXX compiler: C:/Qt/Tools/mingw492_32/bin/g++.exe -- works -- Detecting CXX compiler ABI info -- Detecting CXX compiler ABI info - done -- Detecting CXX compile features -- Detecting CXX compile features - done -- CMake modules: D:/tudatBundle_mvdb/external/CMake/ -- D:/tudatBundle_mvdb -- BOOST: Using gnu. -- Build boost (note that this may take a while, please sit back) -- .\b2.exe;--user-config=cmake-config.jam;link=static,shared;threading=multi;--build-dir=Build;stage;-sNO_BZIP2=1;variant=release;--layout=tagged;toolset=gcc;--with-filesystem;--with-system;--with-thread;--with-regex;--with-date_time;--with-test -- Building CSpice from within TudatBundle. -- WARNING: building release version! -- Building Tudat from within TudatBundle. -- Tudat Relative path (wrt to project): /tudat/Tudat -- WARNING: building release version! -- Using gnucxx compiler. -- Performing Test CXX_SUPPORTS_CXX11 -- Performing Test CXX_SUPPORTS_CXX11 - Success CMake Error at C:/Program Files/CMake/share/cmake-3.8/Modules/FindPackageHandleStandardArgs.cmake:137 (message): Could NOT find Eigen3 (missing: EIGEN3_INCLUDE_DIR EIGEN3_VERSION_OK) (Required is at least version "2.91.0") Call Stack (most recent call first): C:/Program Files/CMake/share/cmake-3.8/Modules/FindPackageHandleStandardArgs.cmake:377 (_FPHSA_FAILURE_MESSAGE) tudat/Tudat/External/CMake/FindEigen3.cmake:79 (find_package_handle_standard_args) tudat/Tudat/CMakeLists.txt:122 (find_package)

-- Configuring incomplete, errors occurred! See also "D:/tudatBundle_mvdb-build/CMakeFiles/CMakeOutput.log". *** cmake process exited with exit code 1.

---

The CMakeOutput.log can be checked here.

I already tried adding the FindEigen3.cmake file manually to the D:\tudatBundle_mvdb\external\CMake directory, but that did not resolve the issue. I'm using MinGW 4.9.2.

How can this issue be resolved?

Thanks,

Michael

[magnific0]

I don't think the drive letter matters. Nor think that any cmake file are/were missing. Can you check whether the eigen folder is present and not empty?

I'm surprised by this error as eigen usually doesn't give us any trouble.

Cheers!

[mvandenbroeck]

Yes indeed, the Eigen folder inside my tudatBundle is empty. I thought the content of Eigen would be downloaded during the configuration, just like boost. I didn't clone the official TudatBundle, but my personal TudatBundle from gitHub. So I should check that I have the correct version on my pc.

Thanks for pointing this out.

Michael

[magnific0]

The eigen guys have a tendency to remove commits from their history, breaking the submodule pointer (defined in .gitmodules, visualized by @sum on your tudatBundle repo GH page). We have recenly updated to point upstream tudatBundle to a release tag of Eigen, hoping this is more stable.

So it's best to update tudatBundle from the upstream to also get this and other new changes