Unable to install v3 on mac

[pedroslopez]

Trying to install the latest version (v3) on macOS Mojave results in an error:

ld: library not found for -l:libdarknet.so
clang: fatal error: linker command failed with exit code 1 (use -v to see invocation)
make: *** [uselib] Error 1
Could not compile darknet
npm WARN darknet2@1.0.0 No description
npm WARN darknet2@1.0.0 No repository field.

npm ERR! code ELIFECYCLE
npm ERR! errno 2
npm ERR! darknet@3.0.0 install: `./install-script.sh && node-gyp rebuild`
npm ERR! Exit status 2
npm ERR! 
npm ERR! Failed at the darknet@3.0.0 install script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

Installing the previous version (v2.0.17) works just fine.

[bennetthardwick]

Interesting. Can you tell me what ls node_modules/dkarnet/ | grep libdarknet says? Does the libdarknet.so file exist?

[pedroslopez]

Well, the error is in the installation step, so node_modules/darknet does not exist 😛

[bennetthardwick]

Lol, can you clone the repo and run npm install and see if you get the same thing

[zaoldyeck]

Hi @bennetthardwick

I have cloned this repo and run $npm install. It shows ld: library not found for -l:libdarknet.so. Could you help me please? My OS is Big Sur version 11.1, and device is Macbook Air6,2(x64).

[bennetthardwick]

Hey @zaoldyeck after building it should have created a libdarknet file, can you tell me what extension this has (maybe libdarknet.a)? I don't have a Mac so I can't check unfortunately.

[owocowyy]

Hi @bennetthardwick I got the same problem on my Mac. After cloning the repo and running npm install the console shows ld: library not found for -l:libdarknet.so. In the lib folder I see a darknet.ts file.

macOS BigSur 11.2.3 (Intel)

[bennetthardwick]

Hey @owocowyy! Can you see anything that says libdarknet like libdarknet.so or libdarknet.a in the root directory

I think the issue is that Mac generates a different kind of libdarknet than on Linux.

[owocowyy]

Sorry for my late response @bennetthardwick

The only file with libdarknet name in it is libdarknet.so in darknet folder.

README.md       darknet         lib         package.json
binding.gyp     examples        node_modules        spec
cppsrc          install-script.sh   package-lock.json   tsconfig.json

Those are files in the root folder of the repo.

3rdparty        backup          darknet.py      json_mjpeg_streams.sh   src
CMakeLists.txt      build           darknet_images.py   libdarknet.so       vcpkg.json
DarknetConfig.cmake.in  build.ps1       darknet_video.py    net_cam_v3.sh       video_yolov3.sh
LICENSE         build.sh        data            net_cam_v4.sh       video_yolov4.sh
Makefile        cfg         image_yolov3.sh     obj
Makefile-e      cmake           image_yolov4.sh     results
README.md       darknet         include         scripts

Those are the files in the darknet folder

[bennetthardwick]

Hmm, that's a bit weird - no clue why it's not working. I tried to fix it with darknet@3.1.6 - can you give it a go? :pray:

[owocowyy]

I got error like this:

ld: library not found for -l:libdarknet.so
clang: fatal error: linker command failed with exit code 1 (use -v to see invocation)
make: *** [uselib] Error 1
Could not compile darknet

This is the debug log

0 verbose cli [ '/usr/local/bin/node', '/usr/local/bin/npm', 'install' ]
1 info using npm@7.7.6
2 info using node@v14.15.0
3 timing npm:load:whichnode Completed in 2ms
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306 info run canvas@2.6.1 install node_modules/canvas node-pre-gyp install --fallback-to-build
307 info run canvas@2.6.1 install { code: 0, signal: null }
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316 timing command:install Completed in 39914ms
317 verbose stack Error: command failed
317 verbose stack     at ChildProcess.<anonymous> (/usr/local/lib/node_modules/npm/node_modules/@npmcli/promise-spawn/index.js:64:27)
317 verbose stack     at ChildProcess.emit (events.js:315:20)
317 verbose stack     at maybeClose (internal/child_process.js:1048:16)
317 verbose stack     at Process.ChildProcess._handle.onexit (internal/child_process.js:288:5)
318 verbose pkgid darknet@3.1.6
319 verbose cwd /Users/Dawid/Desktop/darknet
320 verbose Darwin 20.3.0
321 verbose argv "/usr/local/bin/node" "/usr/local/bin/npm" "install"
322 verbose node v14.15.0
323 verbose npm  v7.7.6
324 error code 2
325 error path /Users/Dawid/Desktop/darknet
326 error command failed
327 error command sh -c ./install-script.sh && node-gyp rebuild
328 verbose exit 2

[bennetthardwick]

Hey sorry for the late reply but I have no clue what's going on :shrug: I think I'll just have to drop support for Mac for now until someone with a Mac can figure out what's going wrong.

[owocowyy]

Ok! If I find some free time I may look onto this issue :)

[namnguyenn17]

I have the similar problem like you but I don't know how to fix it.

chmod +x *.sh g++ -std=c++11 -std=c++11 -Iinclude/ -I3rdparty/stb/include -Wall -Wfatal-errors -Wno-unused-result -Wno-unknown-pragmas -fPIC -ffp-contract=fast -mavx -mavx2 -msse3 -msse4.1 -msse4.2 -msse4a -Ofast -Xpreprocessor -fopenmp -fPIC obj/image_opencv.o obj/http_stream.o obj/gemm.o obj/utils.o obj/dark_cuda.o obj/convolutional_layer.o obj/list.o obj/image.o obj/activations.o obj/im2col.o obj/col2im.o obj/blas.o obj/crop_layer.o obj/dropout_layer.o obj/maxpool_layer.o obj/softmax_layer.o obj/data.o obj/matrix.o obj/network.o obj/connected_layer.o obj/cost_layer.o obj/parser.o obj/option_list.o obj/darknet.o obj/detection_layer.o obj/captcha.o obj/route_layer.o obj/writing.o obj/box.o obj/nightmare.o obj/normalization_layer.o obj/avgpool_layer.o obj/coco.o obj/dice.o obj/yolo.o obj/detector.o obj/layer.o obj/compare.o obj/classifier.o obj/local_layer.o obj/swag.o obj/shortcut_layer.o obj/activation_layer.o obj/rnn_layer.o obj/gru_layer.o obj/rnn.o obj/rnn_vid.o obj/crnn_layer.o obj/demo.o obj/tag.o obj/cifar.o obj/go.o obj/batchnorm_layer.o obj/art.o obj/region_layer.o obj/reorg_layer.o obj/reorg_old_layer.o obj/super.o obj/voxel.o obj/tree.o obj/yolo_layer.o obj/gaussian_yolo_layer.o obj/upsample_layer.o obj/lstm_layer.o obj/conv_lstm_layer.o obj/scale_channels_layer.o obj/sam_layer.o -o darknet -lm -pthread -lgomp`

ld: library not found for -lgomp clang: fatal error: linker command failed with exit code 1 (use -v to see invocation) make: *** [darknet] Error 1

[bennetthardwick]

Looks like you don't have OpenMP installed - were you installing with the DARKNET_BUILD_WITH_OPENMP=1 flag?

[namnguyenn17]

Looks like you don't have OpenMP installed - were you installing with the DARKNET_BUILD_WITH_OPENMP=1 flag?

I fixed it but still have the error ld: library not found for -l:libdarknet.so

but in the folder "darknet", I see it has already generated.

[bennetthardwick]

Hmm seems like the same error. I haven't been able to solve it unfortunately - you might be able to fix it by messing with the binding.gyp file.

[snakamura]

I ran into the same issue on my M1 mac, and found that changing -l:$(LIBNAMESO) in Makefile to -ldarknet worked. The generated uselib was linked to libdarknet.so properly.

$ otool -L darknet/uselib 
darknet/uselib:
    /usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 1311.100.3)
    libdarknet.so (compatibility version 0.0.0, current version 0.0.0)
    /usr/lib/libc++.1.dylib (compatibility version 1.0.0, current version 1300.23.0)

I'm not sure if this change works on other platforms though.

Here is a patch for install-script.sh for reference.

diff --git a/install-script.sh b/install-script.sh
index f99aa08..d0a7b13 100755
--- a/install-script.sh
+++ b/install-script.sh
@@ -56,6 +56,7 @@ sed -i -e "s/OPENCV=[01]/OPENCV=${OPENCV}/g" ./Makefile
 sed -i -e "s/OPENMP=[01]/OPENMP=${OPENMP}/g" ./Makefile
 sed -i -e "s/CUDNN_HALF=[01]/CUDNN_HALF=${CUDNN_HALF}/g" ./Makefile
 sed -i -e "s/LIBSO=[01]/LIBSO=1/g" ./Makefile
+sed -i -e "s/-l:\$(LIBNAMESO)/-ldarknet/g" ./Makefile

 DEFAULT_ARCH=" -gencode arch=compute_35,code=sm_35 \
 -gencode arch=compute_50,code=[sm_50,compute_50] \

ld version

$ ld -v
@(#)PROGRAM:ld  PROJECT:ld64-762
BUILD 12:49:08 Mar 30 2022
configured to support archs: armv6 armv7 armv7s arm64 arm64e arm64_32 i386 x86_64 x86_64h armv6m armv7k armv7m armv7em
LTO support using: LLVM version 13.1.6, (clang-1316.0.21.2.3) (static support for 28, runtime is 28)
TAPI support using: Apple TAPI version 13.1.6 (tapi-1316.0.7.3)