自分用のメモ．ここ*1を参考に
公式*2からver. 4.6.0のソースをダウンロード
$ cd ~/Downloads $ unzip opencv-4.6.0.zip -d ~/ $ cd ~/opencv-4.6.0 $ mkdir build $ cd build $ cmake .. $ cmake --build . $ make -j4 $ sudo make install $ sudo ldconfig $ cd .. $ sudo rm -r opencv-4.6.0
使うときはtasks.jsonにargsを追加
tasks.json
{
"tasks": [
{
"type": "cppbuild",
"label": "C/C++: g++ build active file",
"command": "/usr/bin/g++",
"args": [
...
"-I/usr/local/include/opencv4",
"-L/usr/lib/lib",
"-lopencv_core",
...
何かエラーになる．別ver.とぶつかっているっぽい
/usr/bin/ld: warning: libopencv_core.so.406, needed by /usr/local/lib/libopencv_imgcodecs.so, may conflict with libopencv_core.so.4.2 /usr/bin/ld: /tmp/ccS6898k.o: undefined reference to symbol '_ZN2cv3MatC1Ev' /usr/bin/ld: /usr/local/lib/libopencv_core.so.406: error adding symbols: DSO missing from command line
aptで入れていたっぽい
手動で消す
sudo apt --purge remove libopencv-dev python3-opencv sudo apt --purge remove libopencv-core-dev sudo apt autoremove
これで動いた． 効いたのは2行目っぽい
以上
