opencv: Fix dependency structure

[marlamb]

The opencv_objdetect library is build even with dnn disabled.

Specify library name and version: opencv/4.5.1

---

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• I've used a recent Conan client version close to the currently deployed.
• I've tried at least one configuration locally with the conan-center hook activated.

[CLAassistant]

All committers have signed the CLA.

[ghost]

I detected other pull requests that are modifying opencv/4.x recipe:

• opencv 4.x: fix injection of cpu_baseline and cpu_dispatch options in case of empty string #15241
• opencv 4.x: fix android build #15239
• opencv 4.x: refactor to allow fine-grained selection of each module/contrib #15193

This message is automatically generated by https://github.com/ericLemanissier/conan-center-conflicting-prs so don't hesitate to report issues/improvements there.

[SpaceIm]

It's not true in OpenCV 4.5.4 & 4.5.5 without a patch. I already fix this issue in #15193

[conan-center-bot]

Conan v1 pipeline

All green in build 1 (40ab4c9f7bc8177e20776038a6e317bdc4cb7600):

• opencv/4.5.1@:
  All packages built successfully! (All logs)

• opencv/4.5.0@:
  All packages built successfully! (All logs)

• opencv/4.5.2@:
  All packages built successfully! (All logs)

• opencv/4.5.5@:
  All packages built successfully! (All logs)

• opencv/4.1.2@:
  All packages built successfully! (All logs)

• opencv/4.5.3@:
  All packages built successfully! (All logs)

[github-actions]

Hooks produced the following warnings for commit 40ab4c9

opencv/4.5.1

post_package(): WARN: [MISSING SYSTEM LIBS (KB-H043)] Library './lib/libopencv_videoio.so' links to system library 'mvec' but it is not in cpp_info.system_libs.
post_package(): WARN: [MISSING SYSTEM LIBS (KB-H043)] Library '.\bin\opencv_videoio451.dll' links to system library 'mfplat' but it is not in cpp_info.system_libs.
post_package(): WARN: [MISSING SYSTEM LIBS (KB-H043)] Library '.\bin\opencv_videoio451.dll' links to system library 'mf' but it is not in cpp_info.system_libs.
post_package(): WARN: [MISSING SYSTEM LIBS (KB-H043)] Library '.\bin\opencv_videoio451.dll' links to system library 'd3d11' but it is not in cpp_info.system_libs.
post_package(): WARN: [MISSING SYSTEM LIBS (KB-H043)] Library '.\bin\opencv_videoio451.dll' links to system library 'mfreadwrite' but it is not in cpp_info.system_libs.
post_package(): WARN: [MISSING SYSTEM LIBS (KB-H043)] Library '.\bin\opencv_gapi451.dll' links to system library 'wsock32' but it is not in cpp_info.system_libs.
post_package(): WARN: [MISSING SYSTEM LIBS (KB-H043)] Library '.\bin\opencv_videoio451d.dll' links to system library 'mf' but it is not in cpp_info.system_libs.
post_package(): WARN: [MISSING SYSTEM LIBS (KB-H043)] Library '.\bin\opencv_gapi451d.dll' links to system library 'wsock32' but it is not in cpp_info.system_libs.
post_package(): WARN: [MISSING SYSTEM LIBS (KB-H043)] Library '.\bin\opencv_videoio451d.dll' links to system library 'mfreadwrite' but it is not in cpp_info.system_libs.
post_package(): WARN: [MISSING SYSTEM LIBS (KB-H043)] Library '.\bin\opencv_videoio451d.dll' links to system library 'd3d11' but it is not in cpp_info.system_libs.
post_package(): WARN: [MISSING SYSTEM LIBS (KB-H043)] Library '.\bin\opencv_videoio451d.dll' links to system library 'mfplat' but it is not in cpp_info.system_libs.

opencv/4.5.0

post_package(): WARN: [MISSING SYSTEM LIBS (KB-H043)] Library './lib/libopencv_videoio.so' links to system library 'mvec' but it is not in cpp_info.system_libs.
post_package(): WARN: [MISSING SYSTEM LIBS (KB-H043)] Library '.\bin\opencv_videoio450.dll' links to system library 'mfplat' but it is not in cpp_info.system_libs.
post_package(): WARN: [MISSING SYSTEM LIBS (KB-H043)] Library '.\bin\opencv_videoio450.dll' links to system library 'mf' but it is not in cpp_info.system_libs.
post_package(): WARN: [MISSING SYSTEM LIBS (KB-H043)] Library '.\bin\opencv_videoio450.dll' links to system library 'mfreadwrite' but it is not in cpp_info.system_libs.
post_package(): WARN: [MISSING SYSTEM LIBS (KB-H043)] Library '.\bin\opencv_videoio450.dll' links to system library 'd3d11' but it is not in cpp_info.system_libs.
post_package(): WARN: [MISSING SYSTEM LIBS (KB-H043)] Library '.\bin\opencv_gapi450.dll' links to system library 'wsock32' but it is not in cpp_info.system_libs.
post_package(): WARN: [MISSING SYSTEM LIBS (KB-H043)] Library '.\bin\opencv_videoio450d.dll' links to system library 'd3d11' but it is not in cpp_info.system_libs.
post_package(): WARN: [MISSING SYSTEM LIBS (KB-H043)] Library '.\bin\opencv_videoio450d.dll' links to system library 'mfplat' but it is not in cpp_info.system_libs.
post_package(): WARN: [MISSING SYSTEM LIBS (KB-H043)] Library '.\bin\opencv_gapi450d.dll' links to system library 'wsock32' but it is not in cpp_info.system_libs.
post_package(): WARN: [MISSING SYSTEM LIBS (KB-H043)] Library '.\bin\opencv_videoio450d.dll' links to system library 'mfreadwrite' but it is not in cpp_info.system_libs.
post_package(): WARN: [MISSING SYSTEM LIBS (KB-H043)] Library '.\bin\opencv_videoio450d.dll' links to system library 'mf' but it is not in cpp_info.system_libs.

opencv/4.5.2

post_package(): WARN: [MISSING SYSTEM LIBS (KB-H043)] Library './lib/libopencv_videoio.so' links to system library 'mvec' but it is not in cpp_info.system_libs.
post_package(): WARN: [MISSING SYSTEM LIBS (KB-H043)] Library '.\bin\opencv_videoio452.dll' links to system library 'dxgi' but it is not in cpp_info.system_libs.
post_package(): WARN: [MISSING SYSTEM LIBS (KB-H043)] Library '.\bin\opencv_videoio452.dll' links to system library 'mf' but it is not in cpp_info.system_libs.
post_package(): WARN: [MISSING SYSTEM LIBS (KB-H043)] Library '.\bin\opencv_gapi452.dll' links to system library 'wsock32' but it is not in cpp_info.system_libs.
post_package(): WARN: [MISSING SYSTEM LIBS (KB-H043)] Library '.\bin\opencv_videoio452.dll' links to system library 'd3d11' but it is not in cpp_info.system_libs.
post_package(): WARN: [MISSING SYSTEM LIBS (KB-H043)] Library '.\bin\opencv_videoio452.dll' links to system library 'mfplat' but it is not in cpp_info.system_libs.
post_package(): WARN: [MISSING SYSTEM LIBS (KB-H043)] Library '.\bin\opencv_videoio452.dll' links to system library 'mfreadwrite' but it is not in cpp_info.system_libs.
post_package(): WARN: [MISSING SYSTEM LIBS (KB-H043)] Library '.\bin\opencv_videoio452d.dll' links to system library 'mf' but it is not in cpp_info.system_libs.
post_package(): WARN: [MISSING SYSTEM LIBS (KB-H043)] Library '.\bin\opencv_gapi452d.dll' links to system library 'wsock32' but it is not in cpp_info.system_libs.
post_package(): WARN: [MISSING SYSTEM LIBS (KB-H043)] Library '.\bin\opencv_videoio452d.dll' links to system library 'd3d11' but it is not in cpp_info.system_libs.
post_package(): WARN: [MISSING SYSTEM LIBS (KB-H043)] Library '.\bin\opencv_videoio452d.dll' links to system library 'mfreadwrite' but it is not in cpp_info.system_libs.
post_package(): WARN: [MISSING SYSTEM LIBS (KB-H043)] Library '.\bin\opencv_videoio452d.dll' links to system library 'mfplat' but it is not in cpp_info.system_libs.
post_package(): WARN: [MISSING SYSTEM LIBS (KB-H043)] Library '.\bin\opencv_videoio452d.dll' links to system library 'dxgi' but it is not in cpp_info.system_libs.

opencv/4.5.5

post_package(): WARN: [MISSING SYSTEM LIBS (KB-H043)] Library './lib/libopencv_videoio.so' links to system library 'mvec' but it is not in cpp_info.system_libs.
post_package(): WARN: [MISSING SYSTEM LIBS (KB-H043)] Library '.\bin\opencv_gapi455.dll' links to system library 'wsock32' but it is not in cpp_info.system_libs.
post_package(): WARN: [MISSING SYSTEM LIBS (KB-H043)] Library '.\bin\opencv_videoio455.dll' links to system library 'mf' but it is not in cpp_info.system_libs.
post_package(): WARN: [MISSING SYSTEM LIBS (KB-H043)] Library '.\bin\opencv_videoio455.dll' links to system library 'd3d11' but it is not in cpp_info.system_libs.
post_package(): WARN: [MISSING SYSTEM LIBS (KB-H043)] Library '.\bin\opencv_videoio455.dll' links to system library 'mfplat' but it is not in cpp_info.system_libs.
post_package(): WARN: [MISSING SYSTEM LIBS (KB-H043)] Library '.\bin\opencv_videoio455.dll' links to system library 'dxgi' but it is not in cpp_info.system_libs.
post_package(): WARN: [MISSING SYSTEM LIBS (KB-H043)] Library '.\bin\opencv_videoio455.dll' links to system library 'mfreadwrite' but it is not in cpp_info.system_libs.
post_package(): WARN: [MISSING SYSTEM LIBS (KB-H043)] Library '.\bin\opencv_videoio455d.dll' links to system library 'd3d11' but it is not in cpp_info.system_libs.
post_package(): WARN: [MISSING SYSTEM LIBS (KB-H043)] Library '.\bin\opencv_videoio455d.dll' links to system library 'dxgi' but it is not in cpp_info.system_libs.
post_package(): WARN: [MISSING SYSTEM LIBS (KB-H043)] Library '.\bin\opencv_videoio455d.dll' links to system library 'mfreadwrite' but it is not in cpp_info.system_libs.
post_package(): WARN: [MISSING SYSTEM LIBS (KB-H043)] Library '.\bin\opencv_videoio455d.dll' links to system library 'mfplat' but it is not in cpp_info.system_libs.
post_package(): WARN: [MISSING SYSTEM LIBS (KB-H043)] Library '.\bin\opencv_gapi455d.dll' links to system library 'wsock32' but it is not in cpp_info.system_libs.
post_package(): WARN: [MISSING SYSTEM LIBS (KB-H043)] Library '.\bin\opencv_videoio455d.dll' links to system library 'mf' but it is not in cpp_info.system_libs.

opencv/4.1.2

post_package(): WARN: [MISSING SYSTEM LIBS (KB-H043)] Library './lib/libopencv_videoio.so' links to system library 'mvec' but it is not in cpp_info.system_libs.
post_package(): WARN: [MISSING SYSTEM LIBS (KB-H043)] Library '.\bin\opencv_videoio412.dll' links to system library 'mf' but it is not in cpp_info.system_libs.
post_package(): WARN: [MISSING SYSTEM LIBS (KB-H043)] Library '.\bin\opencv_videoio412.dll' links to system library 'd3d11' but it is not in cpp_info.system_libs.
post_package(): WARN: [MISSING SYSTEM LIBS (KB-H043)] Library '.\bin\opencv_videoio412.dll' links to system library 'mfreadwrite' but it is not in cpp_info.system_libs.
post_package(): WARN: [MISSING SYSTEM LIBS (KB-H043)] Library '.\bin\opencv_videoio412.dll' links to system library 'mfplat' but it is not in cpp_info.system_libs.
post_package(): WARN: [MISSING SYSTEM LIBS (KB-H043)] Library '.\bin\opencv_videoio412d.dll' links to system library 'mfplat' but it is not in cpp_info.system_libs.
post_package(): WARN: [MISSING SYSTEM LIBS (KB-H043)] Library '.\bin\opencv_videoio412d.dll' links to system library 'd3d11' but it is not in cpp_info.system_libs.
post_package(): WARN: [MISSING SYSTEM LIBS (KB-H043)] Library '.\bin\opencv_videoio412d.dll' links to system library 'mf' but it is not in cpp_info.system_libs.
post_package(): WARN: [MISSING SYSTEM LIBS (KB-H043)] Library '.\bin\opencv_videoio412d.dll' links to system library 'mfreadwrite' but it is not in cpp_info.system_libs.

opencv/4.5.3

post_package(): WARN: [MISSING SYSTEM LIBS (KB-H043)] Library './lib/libopencv_videoio.so' links to system library 'mvec' but it is not in cpp_info.system_libs.
post_package(): WARN: [MISSING SYSTEM LIBS (KB-H043)] Library '.\bin\opencv_videoio453.dll' links to system library 'dxgi' but it is not in cpp_info.system_libs.
post_package(): WARN: [MISSING SYSTEM LIBS (KB-H043)] Library '.\bin\opencv_gapi453.dll' links to system library 'wsock32' but it is not in cpp_info.system_libs.
post_package(): WARN: [MISSING SYSTEM LIBS (KB-H043)] Library '.\bin\opencv_videoio453.dll' links to system library 'mfreadwrite' but it is not in cpp_info.system_libs.
post_package(): WARN: [MISSING SYSTEM LIBS (KB-H043)] Library '.\bin\opencv_videoio453.dll' links to system library 'mf' but it is not in cpp_info.system_libs.
post_package(): WARN: [MISSING SYSTEM LIBS (KB-H043)] Library '.\bin\opencv_videoio453.dll' links to system library 'mfplat' but it is not in cpp_info.system_libs.
post_package(): WARN: [MISSING SYSTEM LIBS (KB-H043)] Library '.\bin\opencv_videoio453.dll' links to system library 'd3d11' but it is not in cpp_info.system_libs.
post_package(): WARN: [MISSING SYSTEM LIBS (KB-H043)] Library '.\bin\opencv_videoio453d.dll' links to system library 'mfreadwrite' but it is not in cpp_info.system_libs.
post_package(): WARN: [MISSING SYSTEM LIBS (KB-H043)] Library '.\bin\opencv_videoio453d.dll' links to system library 'mfplat' but it is not in cpp_info.system_libs.
post_package(): WARN: [MISSING SYSTEM LIBS (KB-H043)] Library '.\bin\opencv_videoio453d.dll' links to system library 'mf' but it is not in cpp_info.system_libs.
post_package(): WARN: [MISSING SYSTEM LIBS (KB-H043)] Library '.\bin\opencv_videoio453d.dll' links to system library 'd3d11' but it is not in cpp_info.system_libs.
post_package(): WARN: [MISSING SYSTEM LIBS (KB-H043)] Library '.\bin\opencv_gapi453d.dll' links to system library 'wsock32' but it is not in cpp_info.system_libs.
post_package(): WARN: [MISSING SYSTEM LIBS (KB-H043)] Library '.\bin\opencv_videoio453d.dll' links to system library 'dxgi' but it is not in cpp_info.system_libs.

[prince-chrismc]

@SpaceIm could you be so kind as to provide a reference ? Or some more details please?

It's much nicer to open with a question rather then "your wrong" and worst not providing a helpful educational explanation.

Please try to help other contributors rather then correcting them.

[SpaceIm]

There are already all the detailed explanation in #15193 where I've spent lot of time to fix this issue and others:

Allow to build objdetect component without dnn in 4.5.5 (it can't be built upstream without dnn only in 4.5.4 & 4.5.5). It has been "fixed" upstream in OpenCV 4.6.0 (see opencv/opencv#21369).
It fixes few things in this recipe:

a regression introduced by #11009 (an incorrect fix for #10997). Indeed, objdetect can be built without dnn in all OpenCV versions before 4.5.4, so this PR was breaking these versions when dnn option was False by not exposing opencv_objdetect and few contrib components.
avoid a bug (which is also a regression coming from PR linked above) where quirc is in requirements, but not required by any component in package_indo() when dnn=False (the one #13215 was trying to address, but badly due to previous regression).

[marlamb]

Hi,

I didn't know about the other PR (just saw it now after the post of the bot) After a quick look @SpaceIm seems to be totally right and his PR is a lot more important than this small fix that only works for almost all versions 😃 . As the CI system seems not to test all possible combinations of options, the green build here might be a false positive.

I'll close this pull request here and keep fingers crossed that @SpaceIm will finish his one soon!

[AbrilRBS]

Either way, thanks a lot for taking the time to contribute to conan center index, even if the PR ended up closing, we really appreciate your effort :)