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Find the NDK version used for building OpenCV Android native libraries
Suppose I have prebuilt OpenCV Android native libraries, such as this. How to find which version of NDK is used for building this?
I am curios about this because OpenCV 3.4.3 prebuilt Android libraries seems to incompatible (?) with NDK r18.
android opencv android-ndk opencv4android edited Nov 20 '18 at 5:06
shizhen
2,7923830
asked Nov 20 '18 at 3:42
winterlightwinterlight
175110
add a comment |
Suppose I have prebuilt OpenCV Android native libraries, such as this. How to find which version of NDK is used for building this?
I am curios about this because OpenCV 3.4.3 prebuilt Android libraries seems to incompatible (?) with NDK r18.
android opencv android-ndk opencv4android edited Nov 20 '18 at 5:06
shizhen
2,7923830
asked Nov 20 '18 at 3:42
winterlightwinterlight
175110
I don't think you can infer the NDK version used just by reading the libraries. But you can check its other documentations to see if this information is documented. E.g. github.com/opencv/opencv/wiki/Android_Release_Notes
– shizhen
Nov 20 '18 at 4:57
also here: github.com/opencv/opencv/tree/master/cmake/android, it looks no specified NDK version ...
– shizhen
Nov 20 '18 at 5:05
add a comment |
Suppose I have prebuilt OpenCV Android native libraries, such as this. How to find which version of NDK is used for building this?
I am curios about this because OpenCV 3.4.3 prebuilt Android libraries seems to incompatible (?) with NDK r18.
android opencv android-ndk opencv4android edited Nov 20 '18 at 5:06
shizhen
2,7923830
asked Nov 20 '18 at 3:42
winterlightwinterlight
175110
Suppose I have prebuilt OpenCV Android native libraries, such as this. How to find which version of NDK is used for building this?
I am curios about this because OpenCV 3.4.3 prebuilt Android libraries seems to incompatible (?) with NDK r18.
android opencv android-ndk opencv4android android opencv android-ndk opencv4android edited Nov 20 '18 at 5:06
shizhen
2,7923830
asked Nov 20 '18 at 3:42
winterlightwinterlight
175110
edited Nov 20 '18 at 5:06
shizhen
2,7923830
asked Nov 20 '18 at 3:42
winterlightwinterlight
175110
edited Nov 20 '18 at 5:06
shizhen
2,7923830
edited Nov 20 '18 at 5:06
shizhen
2,7923830
edited Nov 20 '18 at 5:06
shizhen
2,7923830
2,7923830
asked Nov 20 '18 at 3:42
winterlightwinterlight
175110
asked Nov 20 '18 at 3:42
winterlightwinterlight
175110
asked Nov 20 '18 at 3:42
winterlightwinterlight
175110
175110
I don't think you can infer the NDK version used just by reading the libraries. But you can check its other documentations to see if this information is documented. E.g. github.com/opencv/opencv/wiki/Android_Release_Notes
– shizhen
Nov 20 '18 at 4:57
also here: github.com/opencv/opencv/tree/master/cmake/android, it looks no specified NDK version ...
– shizhen
Nov 20 '18 at 5:05
add a comment |
I don't think you can infer the NDK version used just by reading the libraries. But you can check its other documentations to see if this information is documented. E.g. github.com/opencv/opencv/wiki/Android_Release_Notes
– shizhen
Nov 20 '18 at 4:57
also here: github.com/opencv/opencv/tree/master/cmake/android, it looks no specified NDK version ...
– shizhen
Nov 20 '18 at 5:05
I don't think you can infer the NDK version used just by reading the libraries. But you can check its other documentations to see if this information is documented. E.g. github.com/opencv/opencv/wiki/Android_Release_Notes
– shizhen
Nov 20 '18 at 4:57
I don't think you can infer the NDK version used just by reading the libraries. But you can check its other documentations to see if this information is documented. E.g. github.com/opencv/opencv/wiki/Android_Release_Notes
– shizhen
Nov 20 '18 at 4:57
also here: github.com/opencv/opencv/tree/master/cmake/android, it looks no specified NDK version ...
– shizhen
Nov 20 '18 at 5:05
also here: github.com/opencv/opencv/tree/master/cmake/android, it looks no specified NDK version ...
– shizhen
Nov 20 '18 at 5:05
add a comment |
2 Answers
2
active
oldest
votes
OpenCV library contained this information. Open the prebuilt library in Notepad++ and search for "General configuration for OpenCV".
answered Nov 20 '18 at 6:15
winterlightwinterlight
175110
add a comment |
Assuming it was built with a new enough version of the NDK (I don't remember exactly when we added this, but it's been a year or two), there's an ELF note baked into the binaries. Can use https://android.googlesource.com/platform/ndk/+/master/parse_elfnote.py to parse it. It'll show you something like the following:
$ python parse_elfnote.py $NDK/sources/cxx-stl/llvm-libc++/libs/arm64-v8a/libc++_shared.so
----------ABI INFO----------
ABI_ANDROID_API: 21
ABI_NDK_VERSION: r18
ABI_NDK_BUILD_NUMBER: 5002713
answered Nov 28 '18 at 17:11
Dan AlbertDan Albert
5,26711449
add a comment |
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
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active
oldest
votes
OpenCV library contained this information. Open the prebuilt library in Notepad++ and search for "General configuration for OpenCV".
answered Nov 20 '18 at 6:15
winterlightwinterlight
175110
add a comment |
OpenCV library contained this information. Open the prebuilt library in Notepad++ and search for "General configuration for OpenCV".
answered Nov 20 '18 at 6:15
winterlightwinterlight
175110
add a comment |
OpenCV library contained this information. Open the prebuilt library in Notepad++ and search for "General configuration for OpenCV".
answered Nov 20 '18 at 6:15
winterlightwinterlight
175110
OpenCV library contained this information. Open the prebuilt library in Notepad++ and search for "General configuration for OpenCV".
answered Nov 20 '18 at 6:15
winterlightwinterlight
175110
answered Nov 20 '18 at 6:15
winterlightwinterlight
175110
answered Nov 20 '18 at 6:15
winterlightwinterlight
175110
answered Nov 20 '18 at 6:15
winterlightwinterlight
175110
175110
add a comment |
add a comment |
Assuming it was built with a new enough version of the NDK (I don't remember exactly when we added this, but it's been a year or two), there's an ELF note baked into the binaries. Can use https://android.googlesource.com/platform/ndk/+/master/parse_elfnote.py to parse it. It'll show you something like the following:
$ python parse_elfnote.py $NDK/sources/cxx-stl/llvm-libc++/libs/arm64-v8a/libc++_shared.so
----------ABI INFO----------
ABI_ANDROID_API: 21
ABI_NDK_VERSION: r18
ABI_NDK_BUILD_NUMBER: 5002713
answered Nov 28 '18 at 17:11
Dan AlbertDan Albert
5,26711449
add a comment |
Assuming it was built with a new enough version of the NDK (I don't remember exactly when we added this, but it's been a year or two), there's an ELF note baked into the binaries. Can use https://android.googlesource.com/platform/ndk/+/master/parse_elfnote.py to parse it. It'll show you something like the following:
$ python parse_elfnote.py $NDK/sources/cxx-stl/llvm-libc++/libs/arm64-v8a/libc++_shared.so
----------ABI INFO----------
ABI_ANDROID_API: 21
ABI_NDK_VERSION: r18
ABI_NDK_BUILD_NUMBER: 5002713
answered Nov 28 '18 at 17:11
Dan AlbertDan Albert
5,26711449
add a comment |
Assuming it was built with a new enough version of the NDK (I don't remember exactly when we added this, but it's been a year or two), there's an ELF note baked into the binaries. Can use https://android.googlesource.com/platform/ndk/+/master/parse_elfnote.py to parse it. It'll show you something like the following:
$ python parse_elfnote.py $NDK/sources/cxx-stl/llvm-libc++/libs/arm64-v8a/libc++_shared.so
----------ABI INFO----------
ABI_ANDROID_API: 21
ABI_NDK_VERSION: r18
ABI_NDK_BUILD_NUMBER: 5002713
answered Nov 28 '18 at 17:11
Dan AlbertDan Albert
5,26711449
Assuming it was built with a new enough version of the NDK (I don't remember exactly when we added this, but it's been a year or two), there's an ELF note baked into the binaries. Can use https://android.googlesource.com/platform/ndk/+/master/parse_elfnote.py to parse it. It'll show you something like the following:
$ python parse_elfnote.py $NDK/sources/cxx-stl/llvm-libc++/libs/arm64-v8a/libc++_shared.so
----------ABI INFO----------
ABI_ANDROID_API: 21
ABI_NDK_VERSION: r18
ABI_NDK_BUILD_NUMBER: 5002713
answered Nov 28 '18 at 17:11
Dan AlbertDan Albert
5,26711449
answered Nov 28 '18 at 17:11
Dan AlbertDan Albert
5,26711449
answered Nov 28 '18 at 17:11
Dan AlbertDan Albert
5,26711449
answered Nov 28 '18 at 17:11
Dan AlbertDan Albert
5,26711449
5,26711449
add a comment |
add a comment |
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I don't think you can infer the NDK version used just by reading the libraries. But you can check its other documentations to see if this information is documented. E.g. github.com/opencv/opencv/wiki/Android_Release_Notes
– shizhen
Nov 20 '18 at 4:57
also here: github.com/opencv/opencv/tree/master/cmake/android, it looks no specified NDK version ...
– shizhen
Nov 20 '18 at 5:05