from a while, I'd can't build marble, but I'd never taken the time to investigate why, and finally after some test: try to build marble from git with opencv 3.1 (repo version in Archlinux) I have an error at the end of build process (see "actual results") but downgrading opencv to 2 version (2.4.12.3 in my case) all builds fine Reproducible: Always Steps to Reproduce: 1.KF5 and plasma up to date to latest git commit 2.build marble from git with opencv3 > error 3.build marble from git with opencv2 > ok Actual Results: [100%] Built target marbleQuick2 CMakeFiles/animation-video.dir/main.cpp.o: In function `animatedFlight(Marble::MarbleWidget*)': main.cpp:(.text+0x23e): undefined reference to `cv::VideoWriter::VideoWriter(cv::String const&, int, double, cv::Size_<int>, bool)' main.cpp:(.text+0x577): undefined reference to `cv::VideoWriter::write(cv::Mat const&)' main.cpp:(.text+0x671): undefined reference to `cv::VideoWriter::write(cv::Mat const&)' main.cpp:(.text+0x73a): undefined reference to `cv::VideoWriter::~VideoWriter()' main.cpp:(.text+0x787): undefined reference to `cv::VideoWriter::~VideoWriter()' collect2: error: ld returned 1 exit status examples/cpp/animation-video/CMakeFiles/animation-video.dir/build.make:133: recipe for target 'examples/cpp/animation-video/animation-video' failed make[2]: *** [examples/cpp/animation-video/animation-video] Error 1 CMakeFiles/Makefile2:10854: recipe for target 'examples/cpp/animation-video/CMakeFiles/animation-video.dir/all' failed make[1]: *** [examples/cpp/animation-video/CMakeFiles/animation-video.dir/all] Error 2 make[1]: *** Waiting for unfinished jobs.... [100%] Built target marble-game CMakeFiles/tour-preview.dir/tour-preview.cpp.o: In function `animatedFlight(Marble::MarbleWidget*, Marble::GeoDataTour*)': tour-preview.cpp:(.text+0x555): undefined reference to `cv::VideoWriter::VideoWriter(cv::String const&, int, double, cv::Size_<int>, bool)' tour-preview.cpp:(.text+0x85d): undefined reference to `cv::VideoWriter::write(cv::Mat const&)' tour-preview.cpp:(.text+0x937): undefined reference to `cv::VideoWriter::write(cv::Mat const&)' tour-preview.cpp:(.text+0xa00): undefined reference to `cv::VideoWriter::~VideoWriter()' tour-preview.cpp:(.text+0xa88): undefined reference to `cv::VideoWriter::~VideoWriter()' collect2: error: ld returned 1 exit status examples/cpp/tour-preview/CMakeFiles/tour-preview.dir/build.make:133: recipe for target 'examples/cpp/tour-preview/tour-preview' failed make[2]: *** [examples/cpp/tour-preview/tour-preview] Error 1 CMakeFiles/Makefile2:10943: recipe for target 'examples/cpp/tour-preview/CMakeFiles/tour-preview.dir/all' failed make[1]: *** [examples/cpp/tour-preview/CMakeFiles/tour-preview.dir/all] Error 2 [100%] Built target marble_part [100%] Built target marble Makefile:160: recipe for target 'all' failed make: *** [all] Error 2 ==> ERROR: A failure occurred in build(). Aborting... Expected Results: build successfully marble with opencv3 Archlinux x86_64 (with [testing] repo enable) KF5 5.22.0 (from git, latests commits) Plasma 5.6.90 (from git, latest commits) Qt 5.6.0
There's probably a reason marble examples (the only thing in marble that uses opencv) are disabled by default: option(BUILD_MARBLE_EXAMPLES "Build C++ examples showing how to use the Marble library" OFF) So, workaround for now would be to skip setting -DBUILD_MARBLE_EXAMPLES=ON (or explicitly do -DBUILD_MARBLE_EXAMPLES=OFF)
hi, thanks for the tip, with -DBUILD_MARBLE_EXAMPLES=OFF all builds fine (commit r11212.29743f3, builded recently today), BUT I have this conflict file when I try to install it (I use Archlinux, so to install it I use pacman): error: failed to commit transaction (conflicting files) /usr/share/mime/packages/geo.xml exists in both 'marble-data-git' and 'marble-git' Errors occurred, no packages were upgraded.
Fixed in http://commits.kde.org/marble/b6f409c7c4f3c58cfe253a583e501171a57ffe51 Please reopen if that causes problems with older OpenCV versions, not sure how the OpenCV 2 cmake check reacts to videoio.
yes, I built successfully some hours ago win OpenCV 3, thanks ;-)