dylib linking issue #164
Comments
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Hi, as far as I can see it doesn't fail on stable rust, so maybe you can use that as a workaround for now. But it fails on beta so I'm definitely looking into it. |
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Oh I see, thank you for your answer. Unfortunately my project uses nightly. |
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No worries, I have already fixed this locally, I’ll make a release in a couple of hours |
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Can you please test v0.46.0? |
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I tested with 0.46.0 and it works on the minimal example and it now links in my project too. However I have another strange issue. When I load my compiled plugin (the I'll try to make a minimal project to reproduce the issue but it's hard since my project has a lot of interdependencies. |
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Can you post the full list of the undefined imports as given by Generally it's strange, the |
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Yes that's what I thought. Here's And here's |
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It looks like the problem you're having is not only related to to opencv crate, e.g. you have |
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After further digging, it seems related to this issue: rust-lang/rust#67070. |
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Hello,
I'm having trouble building a
dylibthat depends on theopencvcrate. Until now I used it in my project and it worked fine but I need to make one of my crate that depends on opencv adyliband it won't link anymore.I made a minimal example that reproduces the issue available here.
Operating system: Ubuntu 20.04
OpenCV installation: via apt:
sudo apt install libopencv-devVersion: 4.2.0
rustc version: 1.47.0-nightly (7e6d6e5f5 2020-08-16)
Build command output:
Fresh glob v0.3.0 Fresh lazy_static v1.4.0 Fresh regex-syntax v0.6.18 Fresh autocfg v1.0.1 Fresh semver-parser v0.7.0 Fresh maplit v1.0.2 Fresh once_cell v1.4.1 Fresh percent-encoding v2.1.0 Fresh dunce v1.0.1 Fresh vcpkg v0.2.10 Fresh pkg-config v0.3.18 Fresh shlex v0.1.1 Fresh thread_local v1.0.1 Fresh semver v0.10.0 Fresh libc v0.2.77 Fresh memchr v2.3.3 Fresh jobserver v0.1.21 Fresh aho-corasick v0.7.13 Fresh num-traits v0.2.12 Fresh cc v1.0.60 Fresh regex v1.3.9 Fresh clang-sys v1.0.0 Fresh clang v1.0.1 Fresh opencv-binding-generator v0.20.0 Fresh opencv v0.45.1 Fresh shared v0.1.0 (/home/elie/debug/opencv-bug/shared) warning: unused import: `opencv::prelude::*` --> shared/src/lib.rs:1:5 | 1 | use opencv::prelude::*; | ^^^^^^^^^^^^^^^^^^ | = note: `#[warn(unused_imports)]` on by default warning: 1 warning emitted Compiling app v0.1.0 (/home/elie/debug/opencv-bug/app) Running `CARGO=/home/elie/.rustup/toolchains/nightly-2020-08-17-x86_64-unknown-linux-gnu/bin/cargo CARGO_BIN_NAME=app CARGO_CRATE_NAME=app CARGO_MANIFEST_DIR=/home/elie/debug/opencv-bug/app CARGO_PKG_AUTHORS=null CARGO_PKG_DESCRIPTION= CARGO_PKG_HOMEPAGE= CARGO_PKG_LICENSE= CARGO_PKG_LICENSE_FILE= CARGO_PKG_NAME=app CARGO_PKG_REPOSITORY= CARGO_PKG_VERSION=0.1.0 CARGO_PKG_VERSION_MAJOR=0 CARGO_PKG_VERSION_MINOR=1 CARGO_PKG_VERSION_PATCH=0 CARGO_PKG_VERSION_PRE= LD_LIBRARY_PATH='/home/elie/debug/opencv-bug/target/debug/deps:/home/elie/.rustup/toolchains/nightly-2020-08-17-x86_64-unknown-linux-gnu/lib:/home/elie/.rustup/toolchains/nightly-2020-08-17-x86_64-unknown-linux-gnu/lib' rustc --crate-name app --edition=2018 app/src/main.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type bin --emit=dep-info,link -Cembed-bitcode=no -C debuginfo=2 -C metadata=57b5ae03704899f7 -C extra-filename=-57b5ae03704899f7 --out-dir /home/elie/debug/opencv-bug/target/debug/deps -C incremental=/home/elie/debug/opencv-bug/target/debug/incremental -L dependency=/home/elie/debug/opencv-bug/target/debug/deps --extern shared=/home/elie/debug/opencv-bug/target/debug/deps/libshared.so -L native=/home/elie/debug/opencv-bug/target/debug/build/opencv-c5d8739ac9d6d005/out -L native=/usr/lib/x86_64-linux-gnu` warning: unused import: `shared` --> app/src/main.rs:1:5 | 1 | use shared; | ^^^^^^ | = note: `#[warn(unused_imports)]` on by default error: linking with `cc` failed: exit code: 1 | = note: "cc" "-Wl,--as-needed" "-Wl,-z,noexecstack" "-m64" "-Wl,--eh-frame-hdr" "-L" "/home/elie/.rustup/toolchains/nightly-2020-08-17-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/home/elie/debug/opencv-bug/target/debug/deps/app-57b5ae03704899f7.23nsqy2niagsjjrj.rcgu.o" "/home/elie/debug/opencv-bug/target/debug/deps/app-57b5ae03704899f7.2xgnqqs2xweqltoq.rcgu.o" "/home/elie/debug/opencv-bug/target/debug/deps/app-57b5ae03704899f7.32h5agrm2dx4gsbw.rcgu.o" "/home/elie/debug/opencv-bug/target/debug/deps/app-57b5ae03704899f7.3qf3isamaadvjge5.rcgu.o" "/home/elie/debug/opencv-bug/target/debug/deps/app-57b5ae03704899f7.3t0bqmrcw3i79f4n.rcgu.o" "/home/elie/debug/opencv-bug/target/debug/deps/app-57b5ae03704899f7.4nutwmoi5926g10o.rcgu.o" "-o" "/home/elie/debug/opencv-bug/target/debug/deps/app-57b5ae03704899f7" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/home/elie/debug/opencv-bug/target/debug/deps" "-L" "/home/elie/debug/opencv-bug/target/debug/build/opencv-c5d8739ac9d6d005/out" "-L" "/usr/lib/x86_64-linux-gnu" "-L" "/home/elie/.rustup/toolchains/nightly-2020-08-17-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-L" "/home/elie/debug/opencv-bug/target/debug/deps" "-lshared" "-Wl,--start-group" "-L" "/home/elie/.rustup/toolchains/nightly-2020-08-17-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-lstd-afd4b9aba051f3ad" "-Wl,--end-group" "-Wl,-Bstatic" "/home/elie/.rustup/toolchains/nightly-2020-08-17-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-d67a1d86fb8428ce.rlib" "-Wl,-Bdynamic" "-lstdc++" "-lopencv_stitching" "-lopencv_aruco" "-lopencv_bgsegm" "-lopencv_bioinspired" "-lopencv_ccalib" "-lopencv_dnn_objdetect" "-lopencv_dnn_superres" "-lopencv_dpm" "-lopencv_highgui" "-lopencv_face" "-lopencv_freetype" "-lopencv_fuzzy" "-lopencv_hdf" "-lopencv_hfs" "-lopencv_img_hash" "-lopencv_line_descriptor" "-lopencv_quality" "-lopencv_reg" "-lopencv_rgbd" "-lopencv_saliency" "-lopencv_shape" "-lopencv_stereo" "-lopencv_structured_light" "-lopencv_phase_unwrapping" "-lopencv_superres" "-lopencv_optflow" "-lopencv_surface_matching" "-lopencv_tracking" "-lopencv_datasets" "-lopencv_text" "-lopencv_dnn" "-lopencv_plot" "-lopencv_ml" "-lopencv_videostab" "-lopencv_videoio" "-lopencv_viz" "-lopencv_ximgproc" "-lopencv_video" "-lopencv_xobjdetect" "-lopencv_objdetect" "-lopencv_calib3d" "-lopencv_imgcodecs" "-lopencv_features2d" "-lopencv_flann" "-lopencv_xphoto" "-lopencv_photo" "-lopencv_imgproc" "-lopencv_core" "-lutil" "-ldl" "-lutil" "-ldl" "-lrt" "-lpthread" "-lgcc_s" "-lc" "-lm" "-lrt" "-lpthread" "-lutil" "-ldl" "-lutil" = note: /usr/bin/ld: /home/elie/debug/opencv-bug/target/debug/deps/libshared.so: undefined reference to `cv::getImpl(std::vector<int, std::allocator<int> >&, std::vector<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > >&)' /usr/bin/ld: /home/elie/debug/opencv-bug/target/debug/deps/libshared.so: undefined reference to `cv::MatConstIterator::MatConstIterator(cv::Mat const*, int const*)' /usr/bin/ld: /home/elie/debug/opencv-bug/target/debug/deps/libshared.so: undefined reference to `cv::createStitcher(bool)' /usr/bin/ld: /home/elie/debug/opencv-bug/target/debug/deps/libshared.so: undefined reference to `cv::cuda::convertFp16(cv::_InputArray const&, cv::_OutputArray const&, cv::cuda::Stream&)' /usr/bin/ld: /home/elie/debug/opencv-bug/target/debug/deps/libshared.so: undefined reference to `cv::createStitcherScans(bool)' /usr/bin/ld: /home/elie/debug/opencv-bug/target/debug/deps/libshared.so: undefined reference to `cv::_OutputArray::_OutputArray(std::vector<cv::cuda::GpuMat, std::allocator<cv::cuda::GpuMat> > const&)' /usr/bin/ld: /home/elie/debug/opencv-bug/target/debug/deps/libshared.so: undefined reference to `cv::dnn::dnn4_v20191202::BackendNode::BackendNode(int)' /usr/bin/ld: /home/elie/debug/opencv-bug/target/debug/deps/libshared.so: undefined reference to `cv::SparseMatIterator::SparseMatIterator(cv::SparseMat*, int const*)' collect2: error: ld returned 1 exit status error: aborting due to previous error; 1 warning emitted error: could not compile `app`. Caused by: process didn't exit successfully: `CARGO=/home/elie/.rustup/toolchains/nightly-2020-08-17-x86_64-unknown-linux-gnu/bin/cargo CARGO_BIN_NAME=app CARGO_CRATE_NAME=app CARGO_MANIFEST_DIR=/home/elie/debug/opencv-bug/app CARGO_PKG_AUTHORS=null CARGO_PKG_DESCRIPTION= CARGO_PKG_HOMEPAGE= CARGO_PKG_LICENSE= CARGO_PKG_LICENSE_FILE= CARGO_PKG_NAME=app CARGO_PKG_REPOSITORY= CARGO_PKG_VERSION=0.1.0 CARGO_PKG_VERSION_MAJOR=0 CARGO_PKG_VERSION_MINOR=1 CARGO_PKG_VERSION_PATCH=0 CARGO_PKG_VERSION_PRE= LD_LIBRARY_PATH='/home/elie/debug/opencv-bug/target/debug/deps:/home/elie/.rustup/toolchains/nightly-2020-08-17-x86_64-unknown-linux-gnu/lib:/home/elie/.rustup/toolchains/nightly-2020-08-17-x86_64-unknown-linux-gnu/lib' rustc --crate-name app --edition=2018 app/src/main.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type bin --emit=dep-info,link -Cembed-bitcode=no -C debuginfo=2 -C metadata=57b5ae03704899f7 -C extra-filename=-57b5ae03704899f7 --out-dir /home/elie/debug/opencv-bug/target/debug/deps -C incremental=/home/elie/debug/opencv-bug/target/debug/incremental -L dependency=/home/elie/debug/opencv-bug/target/debug/deps --extern shared=/home/elie/debug/opencv-bug/target/debug/deps/libshared.so -L native=/home/elie/debug/opencv-bug/target/debug/build/opencv-c5d8739ac9d6d005/out -L native=/usr/lib/x86_64-linux-gnu` (exit code: 1)The text was updated successfully, but these errors were encountered: