この記事はOpenCV Advent Calendar 2023の8日目の記事です。
はじめに
https://github.com/opencv/opencv/pull/22226でimgcodecsのlibspng対応が追加されました。本記事ではこの対応の効果を見ていきたいと思います。
libspngとは
https://libspng.org/に以下の説明があります。
libspng (simple png) is a C library for reading and writing Portable Network Graphics (PNG) format files with a focus on security and ease of use.
It is licensed under the BSD 2-clause “Simplified” License.
脆弱性対応、利用の容易さを売りにしているPNGフォーマットのデコード、エンコードを行うCライブラリとありますね。また、OSSライセンスもBSD 2-clause “Simplified” Licenseとなっています。
また、https://libspng.org/#performanceに各ライブラリのデコード処理時間の比較結果があります。この結果を見るとlibspngのデコード処理が他のライブラリと比較して高速であることがわかります（※グラフはhttps://libspng.org/からの引用）。
https://github.com/randy408/libspng/blob/v0.7.4/README.md#featuresでlibpng等との機能比較が書かれています（※下表はhttps://libspng.org/からの引用）。
| Feature | spng | libpng | stb_image | lodepng |
|---|---|---|---|---|
| Decode from stream | ✅ | ✅ | ✅ | ❌ |
| Gamma correction | ✅ | ✅ | ❌ | ❌ |
| No known security bugs[1] | ✅ | ✅ | ❌ | ✅ |
| Progressive image read | ✅ | ✅ | ❌ | ❌ |
| Parses all standard chunks | ✅ | ✅ | ❌ | ❌ |
| Doesn't require zlib[2] | ✅ | ❌ | ✅ | ✅ |
| Encoding | ✅ | ✅ | ✅ | ✅ |
| Animated PNG | Planned | ✅[3] | ❌ | ❌ |
[1] The project is fuzz tested on OSS-Fuzz and vulnerabilities are fixed before they become public.
[2] Building with miniz is supported.
[3] With a 3rd party patch
また、https://github.com/randy408/libspng/blob/v0.7.4/README.md#security--testingで
Code is written according to the rules of the CERT C Coding Standard. All integer arithmetic is checked for overflow and all error conditions are handled gracefully.
The library is continuously fuzzed by OSS-Fuzz, code is also scanned with Clang Static Analyzer, Coverity Scan and PVS-Studio.
とあり、セキュアコーディング、ファジングテストに力を入れていることもわかります。
imgcodecsモジュールにおけるlibspng連携の有効化
OpenCVをソースビルドする際、CMakeオプションでWITH_SPNG=ONにして、ソースビルドする必要があります。
https://github.com/opencv/opencv/blob/4.8.1/CMakeLists.txt#L338-L340
動作確認環境
libspng対応を検証するために以下の動作確認環境を用いました。
OpenCV
今回、OpenCV 4.8.1を用いました。
Windows 10, x86_64
| 名称 | スペック、バージョン |
|---|---|
| CPU | Intel Core i7-6700HQ CPU @ 2.60GHz |
| メモリ | 64GB |
| OS | Windows 10 Pro 22H2 |
| コンパイラ | Visual Studio 2022 |
| libpng（ソースビルド） | 1.6.37 |
| libspng（ソースビルド） | 0.7.3 |
macOS, Apple M1
MacBook Air (M1, 2020)を用いました。
| 名称 | スペック、バージョン |
|---|---|
| CPU | Apple M1 3.20GHz 8コア |
| メモリ | 16GB |
| OS | macOS Sonoma 14.0 |
| コンパイラ | g++(Apple clang version 15.0.0 (clang-1500.0.40.1)) |
| libpng（システム） | 1.6.39 |
| libpng（ソースビルド） | 1.6.37 |
| libspng（ソースビルド） | 0.7.3 |
Ubuntu 22.04, x86_64
| 名称 | スペック、バージョン |
|---|---|
| CPU | Intel Core i7-9800X CPU @ 3.80GHz |
| メモリ | 32GB |
| OS | Ubuntu 22.04 64bit |
| コンパイラ | g++ 11.4.0 |
| libpng（apt） | 1.6.37 |
| libpng（ソースビルド） | 1.6.37 |
| libspng（ソースビルド） | 0.7.3 |
データ
https://github.com/libspng/benchmark_imagesにあるPNGファイルを用いました。
| ファイル名 | 解像度 | カラースペース | アルファチャンネル |
|---|---|---|---|
| small_rgb8.png | 562 × 222 | RGB | なし |
| small_rgba8.png | 562 × 222 | RGB | あり |
| medium_rgb8.png | 1053 × 1248 | RGB | なし |
| medium_rgba8.png | 1128 × 1335 | RGB | あり |
| large_rgb8.png | 2403 × 3591 | RGB | なし |
| large_rgba8.png | 2403 × 3591 | RGB | あり |
| large_palette.png | 2101 × 1631 | RGB | あり |
計測結果
前述の動作確認環境を用いてPNGのデコード処理、エンコード処理の時間を計測します。
imread
まず、はじめにimreadの処理時間を計測します。
Windows 10、x86_64
libspngソースビルド、libpngソースビルドとで比較し、処理時間にほとんど違いは見られませんでした。
| ファイル名 | 処理時間(ms) （libspngソースビルド） |
処理時間(ms) （libpngソースビルド） |
|---|---|---|
| small_rgb8 | 3.19684 | 3.21672 |
| small_rgba8 | 3.82025 | 3.86069 |
| medium_rgb8 | 29.6537 | 31.0321 |
| medium_rgba8 | 40.4222 | 40.9662 |
| large_rgb8 | 181.438 | 185.972 |
| large_rgba8 | 219.49 | 224.137 |
| large_palette | 21.9898 | 22.8946 |
macOS、Apple M1
システムのlibpngを用いた構成の方が全体的に高速という結果になりました。
| ファイル名 | 処理時間(ms) （libspngソースビルド） |
処理時間(ms) （libpngソースビルド） |
処理時間(ms) （システムlibpng） |
|---|---|---|---|
| small_rgb8 | 2.45416 | 2.88889 | 2.52748 |
| small_rgba8 | 2.88211 | 3.32712 | 2.62538 |
| medium_rgb8 | 23.8053 | 28.2489 | 22.3648 |
| medium_rgba8 | 33.562 | 39.233 | 29.2276 |
| large_rgb8 | 145.428 | 175.599 | 132.789 |
| large_rgba8 | 182.109 | 214.501 | 154.172 |
| large_palette | 11.8088 | 16.4412 | 10.6377 |
Ubuntu 22.04、x86_64
libspngソースビルドを用いた構成の方が全体的に高速という結果になりました。
| ファイル名 | 処理時間(ms) （libspngソースビルド） |
処理時間(ms) （libpngソースビルド） |
処理時間(ms) （apt libpng） |
|---|---|---|---|
| small_rgb8 | 2.1428 | 2.25658 | 2.93629 |
| small_rgba8 | 2.56499 | 2.7891 | 3.81611 |
| medium_rgb8 | 21.5973 | 22.7822 | 29.2454 |
| medium_rgba8 | 29.8271 | 32.5848 | 43.0187 |
| large_rgb8 | 136.152 | 143.238 | 187.194 |
| large_rgba8 | 178.316 | 192.72 | 253.29 |
| large_palette | 13.4919 | 17.5772 | 16.9771 |
imwrite
次にimwriteの処理時間を計測します。libpng、libspngに対する入力が完全に同一になることを担保するためにhttps://github.com/libspng/benchmark_imagesにあるPNGファイルをWebPファイルに変換し、そのデータをimreadで読み込み、その画像データをimwriteで書き出しました（アルファチャンネルを持つデータがあるのでPPMやBMPなどは採用せず）。
Windows 10、x86_64
libpngソースビルドを用いた構成の方が全体的に高速という結果になりました。
| 入力ファイル名 | 処理時間(ms) （libspngソースビルド） |
処理時間(ms) （libpngソースビルド） |
|---|---|---|
| small_rgb8 | 7.96973 | 7.27422 |
| small_rgba8 | 10.1425 | 9.4669 |
| medium_rgb8 | 76.8889 | 69.6743 |
| medium_rgba8 | 106.048 | 95.3076 |
| large_rgb8 | 492.097 | 443.133 |
| large_rgba8 | 576.243 | 512.552 |
| large_palette | 121.293 | 99.734 |
macOS、Apple M1
libpngソースビルドを用いた構成の方が全体的に高速という結果になりました。
| ファイル名 | 処理時間(ms) （libspngソースビルド） |
処理時間(ms) （libpngソースビルド） |
処理時間(ms) （システムlibpng） |
|---|---|---|---|
| small_rgb8 | 3.73855 | 3.37193 | 3.78874 |
| small_rgba8 | 4.65843 | 4.30594 | 4.71599 |
| medium_rgb8 | 37.92 | 34.9698 | 38.4836 |
| medium_rgba8 | 52.1528 | 47.5386 | 53.3827 |
| large_rgb8 | 239.313 | 221.429 | 246.381 |
| large_rgba8 | 280.744 | 254.731 | 288.257 |
| large_palette | 57.2581 | 47.1932 | 58.274 |
Ubuntu 22.04、x86_64
libpngソースビルドを用いた構成の方が全体的に高速という結果になりました。
| ファイル名 | 処理時間(ms) （libspngソースビルド） |
処理時間(ms) （libpngソースビルド） |
処理時間(ms) （apt libpng） |
|---|---|---|---|
| small_rgb8 | 5.63353 | 5.17175 | 5.49142 |
| small_rgba8 | 6.91362 | 6.21511 | 6.58928 |
| medium_rgb8 | 58.1335 | 51.5445 | 55.0981 |
| medium_rgba8 | 79.5998 | 70.9692 | 75.4776 |
| large_rgb8 | 378.055 | 335.147 | 357.242 |
| large_rgba8 | 441.05 | 393.013 | 412.853 |
| large_palette | 96.7049 | 77.7999 | 84.6394 |
おわりに
今回試した環境のうち、Ubuntu 22.04、x86_64ではlibspngの方がlibpngを使う構成と比べて高速にデコード処理できていることが確認できました。
一方、エンコード処理に関しては十分に最適化がなされていないのかlibpngを使う構成と比べて処理速度が遅いという結果になりました。そのため、imgcodecsモジュールでlibspngを有効にするかどうかはご自身のプラットフォーム、ユースケースを加味して決めることをオススメします。
Appendix：getBuildInformation
Windows 10、x86_64
libspngソースビルド
PNG: build-libspng (ver 0.7.3)
getBuildInformation
General configuration for OpenCV 4.8.1 =====================================
Version control: unknown
Platform:
Timestamp: 2023-11-25T11:05:25Z
Host: Windows 10.0.19045 AMD64
CMake: 3.27.4
CMake generator: Visual Studio 17 2022
CMake build tool: C:/Program Files/Microsoft Visual Studio/2022/Community/MSBuild/Current/Bin/amd64/MSBuild.exe
MSVC: 1936
Configuration: Debug Release
CPU/HW features:
Baseline: SSE SSE2 SSE3
requested: SSE3
Dispatched code generation: SSE4_1 SSE4_2 FP16 AVX AVX2
requested: SSE4_1 SSE4_2 AVX AVX2 FP16
SSE4_1 (16 files): + SSSE3 SSE4_1
SSE4_2 (1 files): + SSSE3 SSE4_1 POPCNT SSE4_2
FP16 (0 files): + SSSE3 SSE4_1 POPCNT SSE4_2 FP16 AVX
AVX (7 files): + SSSE3 SSE4_1 POPCNT SSE4_2 AVX
AVX2 (35 files): + SSSE3 SSE4_1 POPCNT SSE4_2 FP16 FMA3 AVX AVX2
C/C++:
Built as dynamic libs?: YES
C++ standard: 11
C++ Compiler: C:/Program Files/Microsoft Visual Studio/2022/Community/VC/Tools/MSVC/14.36.32532/bin/Hostx64/x64/cl.exe (ver 19.36.32532.0)
C++ flags (Release): /DWIN32 /D_WINDOWS /W4 /GR /D _CRT_SECURE_NO_DEPRECATE /D _CRT_NONSTDC_NO_DEPRECATE /D _SCL_SECURE_NO_WARNINGS /Gy /bigobj /Oi /fp:precise /EHa /wd4127 /wd4251 /wd4324 /wd4275 /wd4512 /wd4589 /wd4819 /MP /MD /O2 /Ob2 /DNDEBUG /Zi
C++ flags (Debug): /DWIN32 /D_WINDOWS /W4 /GR /D _CRT_SECURE_NO_DEPRECATE /D _CRT_NONSTDC_NO_DEPRECATE /D _SCL_SECURE_NO_WARNINGS /Gy /bigobj /Oi /fp:precise /EHa /wd4127 /wd4251 /wd4324 /wd4275 /wd4512 /wd4589 /wd4819 /MP /MDd /Zi /Ob0 /Od /RTC1
C Compiler: C:/Program Files/Microsoft Visual Studio/2022/Community/VC/Tools/MSVC/14.36.32532/bin/Hostx64/x64/cl.exe
C flags (Release): /DWIN32 /D_WINDOWS /W3 /D _CRT_SECURE_NO_DEPRECATE /D _CRT_NONSTDC_NO_DEPRECATE /D _SCL_SECURE_NO_WARNINGS /Gy /bigobj /Oi /fp:precise /MP /MD /O2 /Ob2 /DNDEBUG /Zi
C flags (Debug): /DWIN32 /D_WINDOWS /W3 /D _CRT_SECURE_NO_DEPRECATE /D _CRT_NONSTDC_NO_DEPRECATE /D _SCL_SECURE_NO_WARNINGS /Gy /bigobj /Oi /fp:precise /MP /MDd /Zi /Ob0 /Od /RTC1
Linker flags (Release): /machine:x64 /INCREMENTAL:NO /debug
Linker flags (Debug): /machine:x64 /debug /INCREMENTAL
ccache: NO
Precompiled headers: YES
Extra dependencies:
3rdparty dependencies:
OpenCV modules:
To be built: calib3d core dnn features2d flann gapi highgui imgcodecs imgproc ml objdetect photo stitching ts video videoio
Disabled: world
Disabled by dependency: -
Unavailable: java python2 python3
Applications: apps
Documentation: NO
Non-free algorithms: NO
Windows RT support: NO
GUI: WIN32UI
Win32 UI: YES
Media I/O:
ZLib: build (ver 1.2.13)
JPEG: build-libjpeg-turbo (ver 2.1.3-62)
SIMD Support Request: YES
SIMD Support: NO
WEBP: build (ver encoder: 0x020f)
PNG: build-libspng (ver 0.7.3)
TIFF: build (ver 42 - 4.2.0)
JPEG 2000: build (ver 2.5.0)
OpenEXR: build (ver 2.3.0)
HDR: YES
SUNRASTER: YES
PXM: YES
PFM: YES
Video I/O:
FFMPEG: YES (prebuilt binaries)
avcodec: YES (58.134.100)
avformat: YES (58.76.100)
avutil: YES (56.70.100)
swscale: YES (5.9.100)
avresample: YES (4.0.0)
GStreamer: NO
DirectShow: YES
Media Foundation: YES
DXVA: YES
Parallel framework: TBB (ver 2021.5 interface 12050)
Trace: YES (with Intel ITT)
Other third-party libraries:
Intel IPP: 2021.8 [2021.8.0]
at: C:/dev/opencv-4.8.1/build/3rdparty/ippicv/ippicv_win/icv
Intel IPP IW: sources (2021.8.0)
at: C:/dev/opencv-4.8.1/build/3rdparty/ippicv/ippicv_win/iw
Lapack: NO
Eigen: YES (ver 3.4.0)
Custom HAL: NO
Protobuf: build (3.19.1)
Flatbuffers: builtin/3rdparty (23.5.9)
Python (for build): C:/Program Files (x86)/Microsoft Visual Studio/Shared/Python39_64/python.exe
Java:
ant: NO
Java: NO
JNI: NO
Java wrappers: NO
Java tests: NO
Install to: C:/dev/opencv-4.8.1/build/install
libpngソースビルド
PNG: build (ver 1.6.37)
getBuildInformation
General configuration for OpenCV 4.8.1 =====================================
Version control: unknown
Platform:
Timestamp: 2023-11-25T11:18:55Z
Host: Windows 10.0.19045 AMD64
CMake: 3.27.4
CMake generator: Visual Studio 17 2022
CMake build tool: C:/Program Files/Microsoft Visual Studio/2022/Community/MSBuild/Current/Bin/amd64/MSBuild.exe
MSVC: 1936
Configuration: Debug Release
CPU/HW features:
Baseline: SSE SSE2 SSE3
requested: SSE3
Dispatched code generation: SSE4_1 SSE4_2 FP16 AVX AVX2
requested: SSE4_1 SSE4_2 AVX AVX2 FP16
SSE4_1 (16 files): + SSSE3 SSE4_1
SSE4_2 (1 files): + SSSE3 SSE4_1 POPCNT SSE4_2
FP16 (0 files): + SSSE3 SSE4_1 POPCNT SSE4_2 FP16 AVX
AVX (7 files): + SSSE3 SSE4_1 POPCNT SSE4_2 AVX
AVX2 (35 files): + SSSE3 SSE4_1 POPCNT SSE4_2 FP16 FMA3 AVX AVX2
C/C++:
Built as dynamic libs?: YES
C++ standard: 11
C++ Compiler: C:/Program Files/Microsoft Visual Studio/2022/Community/VC/Tools/MSVC/14.36.32532/bin/Hostx64/x64/cl.exe (ver 19.36.32532.0)
C++ flags (Release): /DWIN32 /D_WINDOWS /W4 /GR /D _CRT_SECURE_NO_DEPRECATE /D _CRT_NONSTDC_NO_DEPRECATE /D _SCL_SECURE_NO_WARNINGS /Gy /bigobj /Oi /fp:precise /EHa /wd4127 /wd4251 /wd4324 /wd4275 /wd4512 /wd4589 /wd4819 /MP /MD /O2 /Ob2 /DNDEBUG /Zi
C++ flags (Debug): /DWIN32 /D_WINDOWS /W4 /GR /D _CRT_SECURE_NO_DEPRECATE /D _CRT_NONSTDC_NO_DEPRECATE /D _SCL_SECURE_NO_WARNINGS /Gy /bigobj /Oi /fp:precise /EHa /wd4127 /wd4251 /wd4324 /wd4275 /wd4512 /wd4589 /wd4819 /MP /MDd /Zi /Ob0 /Od /RTC1
C Compiler: C:/Program Files/Microsoft Visual Studio/2022/Community/VC/Tools/MSVC/14.36.32532/bin/Hostx64/x64/cl.exe
C flags (Release): /DWIN32 /D_WINDOWS /W3 /D _CRT_SECURE_NO_DEPRECATE /D _CRT_NONSTDC_NO_DEPRECATE /D _SCL_SECURE_NO_WARNINGS /Gy /bigobj /Oi /fp:precise /MP /MD /O2 /Ob2 /DNDEBUG /Zi
C flags (Debug): /DWIN32 /D_WINDOWS /W3 /D _CRT_SECURE_NO_DEPRECATE /D _CRT_NONSTDC_NO_DEPRECATE /D _SCL_SECURE_NO_WARNINGS /Gy /bigobj /Oi /fp:precise /MP /MDd /Zi /Ob0 /Od /RTC1
Linker flags (Release): /machine:x64 /INCREMENTAL:NO /debug
Linker flags (Debug): /machine:x64 /debug /INCREMENTAL
ccache: NO
Precompiled headers: YES
Extra dependencies:
3rdparty dependencies:
OpenCV modules:
To be built: calib3d core dnn features2d flann gapi highgui imgcodecs imgproc ml objdetect photo stitching ts video videoio
Disabled: world
Disabled by dependency: -
Unavailable: java python2 python3
Applications: apps
Documentation: NO
Non-free algorithms: NO
Windows RT support: NO
GUI: WIN32UI
Win32 UI: YES
Media I/O:
ZLib: build (ver 1.2.13)
JPEG: build-libjpeg-turbo (ver 2.1.3-62)
SIMD Support Request: YES
SIMD Support: NO
WEBP: build (ver encoder: 0x020f)
PNG: build (ver 1.6.37)
TIFF: build (ver 42 - 4.2.0)
JPEG 2000: build (ver 2.5.0)
OpenEXR: build (ver 2.3.0)
HDR: YES
SUNRASTER: YES
PXM: YES
PFM: YES
Video I/O:
FFMPEG: YES (prebuilt binaries)
avcodec: YES (58.134.100)
avformat: YES (58.76.100)
avutil: YES (56.70.100)
swscale: YES (5.9.100)
avresample: YES (4.0.0)
GStreamer: NO
DirectShow: YES
Media Foundation: YES
DXVA: YES
Parallel framework: TBB (ver 2021.5 interface 12050)
Trace: YES (with Intel ITT)
Other third-party libraries:
Intel IPP: 2021.8 [2021.8.0]
at: C:/dev/opencv-4.8.1/build/3rdparty/ippicv/ippicv_win/icv
Intel IPP IW: sources (2021.8.0)
at: C:/dev/opencv-4.8.1/build/3rdparty/ippicv/ippicv_win/iw
Lapack: NO
Eigen: YES (ver 3.4.0)
Custom HAL: NO
Protobuf: build (3.19.1)
Flatbuffers: builtin/3rdparty (23.5.9)
Python (for build): C:/Program Files (x86)/Microsoft Visual Studio/Shared/Python39_64/python.exe
Java:
ant: NO
Java: NO
JNI: NO
Java wrappers: NO
Java tests: NO
Install to: C:/dev/opencv-4.8.1/build/install
macOS、Apple M1
libspngソースビルド
PNG: build-libspng (ver 0.7.3)
getBuildInformation
General configuration for OpenCV 4.8.1 =====================================
Version control: unknown
Platform:
Timestamp: 2023-11-25T13:22:51Z
Host: Darwin 23.0.0 arm64
CMake: 3.27.1
CMake generator: Unix Makefiles
CMake build tool: /usr/bin/make
Configuration: Release
CPU/HW features:
Baseline: NEON FP16
C/C++:
Built as dynamic libs?: YES
C++ standard: 11
C++ Compiler: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/c++ (ver 15.0.0.15000040)
C++ flags (Release): -fsigned-char -W -Wall -Wreturn-type -Wnon-virtual-dtor -Waddress -Wsequence-point -Wformat -Wformat-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wuninitialized -Wno-delete-non-virtual-dtor -Wno-unnamed-type-template-args -Wno-comment -fdiagnostics-show-option -Qunused-arguments -Wno-semicolon-before-method-body -ffunction-sections -fdata-sections -fvisibility=hidden -fvisibility-inlines-hidden -Wno-deprecated-copy -O3 -DNDEBUG -DNDEBUG
C++ flags (Debug): -fsigned-char -W -Wall -Wreturn-type -Wnon-virtual-dtor -Waddress -Wsequence-point -Wformat -Wformat-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wuninitialized -Wno-delete-non-virtual-dtor -Wno-unnamed-type-template-args -Wno-comment -fdiagnostics-show-option -Qunused-arguments -Wno-semicolon-before-method-body -ffunction-sections -fdata-sections -fvisibility=hidden -fvisibility-inlines-hidden -Wno-deprecated-copy -g -O0 -DDEBUG -D_DEBUG
C Compiler: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/cc
C flags (Release): -fsigned-char -W -Wall -Wreturn-type -Wnon-virtual-dtor -Waddress -Wsequence-point -Wformat -Wformat-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wuninitialized -Wno-delete-non-virtual-dtor -Wno-unnamed-type-template-args -Wno-comment -fdiagnostics-show-option -Qunused-arguments -Wno-semicolon-before-method-body -ffunction-sections -fdata-sections -fvisibility=hidden -fvisibility-inlines-hidden -O3 -DNDEBUG -DNDEBUG
C flags (Debug): -fsigned-char -W -Wall -Wreturn-type -Wnon-virtual-dtor -Waddress -Wsequence-point -Wformat -Wformat-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wuninitialized -Wno-delete-non-virtual-dtor -Wno-unnamed-type-template-args -Wno-comment -fdiagnostics-show-option -Qunused-arguments -Wno-semicolon-before-method-body -ffunction-sections -fdata-sections -fvisibility=hidden -fvisibility-inlines-hidden -g -O0 -DDEBUG -D_DEBUG
Linker flags (Release): -Wl,-dead_strip
Linker flags (Debug): -Wl,-dead_strip
ccache: NO
Precompiled headers: NO
Extra dependencies:
3rdparty dependencies:
OpenCV modules:
To be built: calib3d core dnn features2d flann gapi highgui imgcodecs imgproc ml objdetect photo stitching video videoio
Disabled: world
Disabled by dependency: -
Unavailable: java python2 python3 ts
Applications: apps
Documentation: NO
Non-free algorithms: NO
GUI: COCOA
Cocoa: YES
VTK support: NO
Media I/O:
ZLib: build (ver 1.2.13)
JPEG: build-libjpeg-turbo (ver 2.1.3-62)
SIMD Support Request: YES
SIMD Support: YES
WEBP: build (ver encoder: 0x020f)
PNG: build-libspng (ver 0.7.3)
TIFF: build (ver 42 - 4.2.0)
JPEG 2000: build (ver 2.5.0)
OpenEXR: build (ver 2.3.0)
HDR: YES
SUNRASTER: YES
PXM: YES
PFM: YES
Video I/O:
DC1394: NO
FFMPEG: NO
avcodec: NO
avformat: NO
avutil: NO
swscale: NO
avresample: NO
GStreamer: NO
AVFoundation: YES
Parallel framework: GCD
Trace: YES (with Intel ITT)
Other third-party libraries:
Lapack: YES (/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX14.0.sdk/System/Library/Frameworks/Accelerate.framework -lm -ldl)
Eigen: NO
Custom HAL: YES (carotene (ver 0.0.1))
Protobuf: build (3.19.1)
Flatbuffers: builtin/3rdparty (23.5.9)
Python (for build): /opt/homebrew/bin/python3
Java:
ant: NO
Java: NO
JNI: NO
Java wrappers: NO
Java tests: NO
Install to: /Users/dandelion/dev/opencv-4.8.1/build/install
libpngソースビルド
PNG: build (ver 1.6.37)
getBuildInformation
General configuration for OpenCV 4.8.1 =====================================
Version control: unknown
Platform:
Timestamp: 2023-11-25T13:19:05Z
Host: Darwin 23.0.0 arm64
CMake: 3.27.1
CMake generator: Unix Makefiles
CMake build tool: /usr/bin/make
Configuration: Release
CPU/HW features:
Baseline: NEON FP16
C/C++:
Built as dynamic libs?: YES
C++ standard: 11
C++ Compiler: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/c++ (ver 15.0.0.15000040)
C++ flags (Release): -fsigned-char -W -Wall -Wreturn-type -Wnon-virtual-dtor -Waddress -Wsequence-point -Wformat -Wformat-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wuninitialized -Wno-delete-non-virtual-dtor -Wno-unnamed-type-template-args -Wno-comment -fdiagnostics-show-option -Qunused-arguments -Wno-semicolon-before-method-body -ffunction-sections -fdata-sections -fvisibility=hidden -fvisibility-inlines-hidden -Wno-deprecated-copy -O3 -DNDEBUG -DNDEBUG
C++ flags (Debug): -fsigned-char -W -Wall -Wreturn-type -Wnon-virtual-dtor -Waddress -Wsequence-point -Wformat -Wformat-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wuninitialized -Wno-delete-non-virtual-dtor -Wno-unnamed-type-template-args -Wno-comment -fdiagnostics-show-option -Qunused-arguments -Wno-semicolon-before-method-body -ffunction-sections -fdata-sections -fvisibility=hidden -fvisibility-inlines-hidden -Wno-deprecated-copy -g -O0 -DDEBUG -D_DEBUG
C Compiler: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/cc
C flags (Release): -fsigned-char -W -Wall -Wreturn-type -Wnon-virtual-dtor -Waddress -Wsequence-point -Wformat -Wformat-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wuninitialized -Wno-delete-non-virtual-dtor -Wno-unnamed-type-template-args -Wno-comment -fdiagnostics-show-option -Qunused-arguments -Wno-semicolon-before-method-body -ffunction-sections -fdata-sections -fvisibility=hidden -fvisibility-inlines-hidden -O3 -DNDEBUG -DNDEBUG
C flags (Debug): -fsigned-char -W -Wall -Wreturn-type -Wnon-virtual-dtor -Waddress -Wsequence-point -Wformat -Wformat-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wuninitialized -Wno-delete-non-virtual-dtor -Wno-unnamed-type-template-args -Wno-comment -fdiagnostics-show-option -Qunused-arguments -Wno-semicolon-before-method-body -ffunction-sections -fdata-sections -fvisibility=hidden -fvisibility-inlines-hidden -g -O0 -DDEBUG -D_DEBUG
Linker flags (Release): -Wl,-dead_strip
Linker flags (Debug): -Wl,-dead_strip
ccache: NO
Precompiled headers: NO
Extra dependencies:
3rdparty dependencies:
OpenCV modules:
To be built: calib3d core dnn features2d flann gapi highgui imgcodecs imgproc ml objdetect photo stitching video videoio
Disabled: world
Disabled by dependency: -
Unavailable: java python2 python3 ts
Applications: apps
Documentation: NO
Non-free algorithms: NO
GUI: COCOA
Cocoa: YES
VTK support: NO
Media I/O:
ZLib: build (ver 1.2.13)
JPEG: build-libjpeg-turbo (ver 2.1.3-62)
SIMD Support Request: YES
SIMD Support: YES
WEBP: build (ver encoder: 0x020f)
PNG: build (ver 1.6.37)
TIFF: build (ver 42 - 4.2.0)
JPEG 2000: build (ver 2.5.0)
OpenEXR: build (ver 2.3.0)
HDR: YES
SUNRASTER: YES
PXM: YES
PFM: YES
Video I/O:
DC1394: NO
FFMPEG: NO
avcodec: NO
avformat: NO
avutil: NO
swscale: NO
avresample: NO
GStreamer: NO
AVFoundation: YES
Parallel framework: GCD
Trace: YES (with Intel ITT)
Other third-party libraries:
Lapack: YES (/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX14.0.sdk/System/Library/Frameworks/Accelerate.framework -lm -ldl)
Eigen: NO
Custom HAL: YES (carotene (ver 0.0.1))
Protobuf: build (3.19.1)
Flatbuffers: builtin/3rdparty (23.5.9)
Python (for build): /opt/homebrew/bin/python3
Java:
ant: NO
Java: NO
JNI: NO
Java wrappers: NO
Java tests: NO
Install to: /Users/dandelion/dev/opencv-4.8.1/build/install
libpng(システム)
PNG: /usr/X11R6/lib/libpng.dylib (ver 1.6.39)
getBuildInformation
General configuration for OpenCV 4.8.1 =====================================
Version control: unknown
Platform:
Timestamp: 2023-11-25T13:15:45Z
Host: Darwin 23.0.0 arm64
CMake: 3.27.1
CMake generator: Unix Makefiles
CMake build tool: /usr/bin/make
Configuration: Release
CPU/HW features:
Baseline: NEON FP16
C/C++:
Built as dynamic libs?: YES
C++ standard: 11
C++ Compiler: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/c++ (ver 15.0.0.15000040)
C++ flags (Release): -fsigned-char -W -Wall -Wreturn-type -Wnon-virtual-dtor -Waddress -Wsequence-point -Wformat -Wformat-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wuninitialized -Wno-delete-non-virtual-dtor -Wno-unnamed-type-template-args -Wno-comment -fdiagnostics-show-option -Qunused-arguments -Wno-semicolon-before-method-body -ffunction-sections -fdata-sections -fvisibility=hidden -fvisibility-inlines-hidden -Wno-deprecated-copy -O3 -DNDEBUG -DNDEBUG
C++ flags (Debug): -fsigned-char -W -Wall -Wreturn-type -Wnon-virtual-dtor -Waddress -Wsequence-point -Wformat -Wformat-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wuninitialized -Wno-delete-non-virtual-dtor -Wno-unnamed-type-template-args -Wno-comment -fdiagnostics-show-option -Qunused-arguments -Wno-semicolon-before-method-body -ffunction-sections -fdata-sections -fvisibility=hidden -fvisibility-inlines-hidden -Wno-deprecated-copy -g -O0 -DDEBUG -D_DEBUG
C Compiler: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/cc
C flags (Release): -fsigned-char -W -Wall -Wreturn-type -Wnon-virtual-dtor -Waddress -Wsequence-point -Wformat -Wformat-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wuninitialized -Wno-delete-non-virtual-dtor -Wno-unnamed-type-template-args -Wno-comment -fdiagnostics-show-option -Qunused-arguments -Wno-semicolon-before-method-body -ffunction-sections -fdata-sections -fvisibility=hidden -fvisibility-inlines-hidden -O3 -DNDEBUG -DNDEBUG
C flags (Debug): -fsigned-char -W -Wall -Wreturn-type -Wnon-virtual-dtor -Waddress -Wsequence-point -Wformat -Wformat-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wuninitialized -Wno-delete-non-virtual-dtor -Wno-unnamed-type-template-args -Wno-comment -fdiagnostics-show-option -Qunused-arguments -Wno-semicolon-before-method-body -ffunction-sections -fdata-sections -fvisibility=hidden -fvisibility-inlines-hidden -g -O0 -DDEBUG -D_DEBUG
Linker flags (Release): -Wl,-dead_strip
Linker flags (Debug): -Wl,-dead_strip
ccache: NO
Precompiled headers: NO
Extra dependencies:
3rdparty dependencies:
OpenCV modules:
To be built: calib3d core dnn features2d flann gapi highgui imgcodecs imgproc ml objdetect photo stitching video videoio
Disabled: world
Disabled by dependency: -
Unavailable: java python2 python3 ts
Applications: apps
Documentation: NO
Non-free algorithms: NO
GUI: COCOA
Cocoa: YES
VTK support: NO
Media I/O:
ZLib: zlib (ver 1.2.13)
JPEG: build-libjpeg-turbo (ver 2.1.3-62)
SIMD Support Request: YES
SIMD Support: YES
WEBP: build (ver encoder: 0x020f)
PNG: /usr/X11R6/lib/libpng.dylib (ver 1.6.39)
TIFF: build (ver 42 - 4.2.0)
JPEG 2000: build (ver 2.5.0)
OpenEXR: build (ver 2.3.0)
HDR: YES
SUNRASTER: YES
PXM: YES
PFM: YES
Video I/O:
DC1394: NO
FFMPEG: NO
avcodec: NO
avformat: NO
avutil: NO
swscale: NO
avresample: NO
GStreamer: NO
AVFoundation: YES
Parallel framework: GCD
Trace: YES (with Intel ITT)
Other third-party libraries:
Lapack: YES (/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX14.0.sdk/System/Library/Frameworks/Accelerate.framework -lm -ldl)
Eigen: NO
Custom HAL: YES (carotene (ver 0.0.1))
Protobuf: build (3.19.1)
Flatbuffers: builtin/3rdparty (23.5.9)
Python (for build): /opt/homebrew/bin/python3
Java:
ant: NO
Java: NO
JNI: NO
Java wrappers: NO
Java tests: NO
Install to: /Users/dandelion/dev/opencv-4.8.1/build/install
Ubuntu 22.04、x86_64
libspngソースビルド
PNG: build-libspng (ver 0.7.3)
getBuildInformation
General configuration for OpenCV 4.8.1 =====================================
Version control: unknown
Platform:
Timestamp: 2023-11-25T15:15:04Z
Host: Linux 6.2.0-33-generic x86_64
CMake: 3.22.1
CMake generator: Unix Makefiles
CMake build tool: /usr/bin/gmake
Configuration: Release
CPU/HW features:
Baseline: SSE SSE2 SSE3
requested: SSE3
Dispatched code generation: SSE4_1 SSE4_2 FP16 AVX AVX2 AVX512_SKX
requested: SSE4_1 SSE4_2 AVX FP16 AVX2 AVX512_SKX
SSE4_1 (16 files): + SSSE3 SSE4_1
SSE4_2 (1 files): + SSSE3 SSE4_1 POPCNT SSE4_2
FP16 (0 files): + SSSE3 SSE4_1 POPCNT SSE4_2 FP16 AVX
AVX (7 files): + SSSE3 SSE4_1 POPCNT SSE4_2 AVX
AVX2 (35 files): + SSSE3 SSE4_1 POPCNT SSE4_2 FP16 FMA3 AVX AVX2
AVX512_SKX (5 files): + SSSE3 SSE4_1 POPCNT SSE4_2 FP16 FMA3 AVX AVX2 AVX_512F AVX512_COMMON AVX512_SKX
C/C++:
Built as dynamic libs?: YES
C++ standard: 11
C++ Compiler: /usr/bin/c++ (ver 11.4.0)
C++ flags (Release): -fsigned-char -W -Wall -Wreturn-type -Wnon-virtual-dtor -Waddress -Wsequence-point -Wformat -Wformat-security -Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wuninitialized -Wsuggest-override -Wno-delete-non-virtual-dtor -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections -msse -msse2 -msse3 -fvisibility=hidden -fvisibility-inlines-hidden -O3 -DNDEBUG -DNDEBUG
C++ flags (Debug): -fsigned-char -W -Wall -Wreturn-type -Wnon-virtual-dtor -Waddress -Wsequence-point -Wformat -Wformat-security -Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wuninitialized -Wsuggest-override -Wno-delete-non-virtual-dtor -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections -msse -msse2 -msse3 -fvisibility=hidden -fvisibility-inlines-hidden -g -O0 -DDEBUG -D_DEBUG
C Compiler: /usr/bin/cc
C flags (Release): -fsigned-char -W -Wall -Wreturn-type -Waddress -Wsequence-point -Wformat -Wformat-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -Wuninitialized -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections -msse -msse2 -msse3 -fvisibility=hidden -O3 -DNDEBUG -DNDEBUG
C flags (Debug): -fsigned-char -W -Wall -Wreturn-type -Waddress -Wsequence-point -Wformat -Wformat-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -Wuninitialized -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections -msse -msse2 -msse3 -fvisibility=hidden -g -O0 -DDEBUG -D_DEBUG
Linker flags (Release): -Wl,--exclude-libs,libippicv.a -Wl,--exclude-libs,libippiw.a -Wl,--gc-sections -Wl,--as-needed -Wl,--no-undefined
Linker flags (Debug): -Wl,--exclude-libs,libippicv.a -Wl,--exclude-libs,libippiw.a -Wl,--gc-sections -Wl,--as-needed -Wl,--no-undefined
ccache: NO
Precompiled headers: NO
Extra dependencies: dl m pthread rt
3rdparty dependencies:
OpenCV modules:
To be built: calib3d core dnn features2d flann gapi highgui imgcodecs imgproc ml objdetect photo stitching video videoio
Disabled: python3 world
Disabled by dependency: -
Unavailable: java python2 ts
Applications: apps
Documentation: NO
Non-free algorithms: NO
GUI: GTK3
GTK+: YES (ver 3.24.33)
GThread : YES (ver 2.72.4)
GtkGlExt: NO
VTK support: YES (ver 7.1.1)
Media I/O:
ZLib: /usr/lib/x86_64-linux-gnu/libz.so (ver 1.2.11)
JPEG: /usr/lib/x86_64-linux-gnu/libjpeg.so (ver 80)
WEBP: /usr/lib/x86_64-linux-gnu/libwebp.so (ver encoder: 0x020f)
PNG: build-libspng (ver 0.7.3)
TIFF: /usr/lib/x86_64-linux-gnu/libtiff.so (ver 42 / 4.3.0)
JPEG 2000: OpenJPEG (ver 2.4.0)
OpenEXR: /usr/lib/x86_64-linux-gnu/libImath-2_5.so /usr/lib/x86_64-linux-gnu/libIlmImf-2_5.so /usr/lib/x86_64-linux-gnu/libIex-2_5.so /usr/lib/x86_64-linux-gnu/libHalf-2_5.so /usr/lib/x86_64-linux-gnu/libIlmThread-2_5.so (ver 2_5)
HDR: YES
SUNRASTER: YES
PXM: YES
PFM: YES
Video I/O:
DC1394: NO
FFMPEG: YES
avcodec: YES (58.134.100)
avformat: YES (58.76.100)
avutil: YES (56.70.100)
swscale: YES (5.9.100)
avresample: NO
GStreamer: YES (1.20.3)
v4l/v4l2: YES (linux/videodev2.h)
Parallel framework: pthreads
Trace: YES (with Intel ITT)
Other third-party libraries:
Intel IPP: 2021.8 [2021.8.0]
at: /home/dandelion/dev/opencv-4.8.1/build/3rdparty/ippicv/ippicv_lnx/icv
Intel IPP IW: sources (2021.8.0)
at: /home/dandelion/dev/opencv-4.8.1/build/3rdparty/ippicv/ippicv_lnx/iw
VA: NO
Lapack: YES (/usr/lib/x86_64-linux-gnu/liblapack.so /usr/lib/x86_64-linux-gnu/libcblas.so /usr/lib/x86_64-linux-gnu/libatlas.so)
Eigen: YES (ver 3.4.0)
Custom HAL: NO
Protobuf: build (3.19.1)
Flatbuffers: builtin/3rdparty (23.5.9)
Python (for build): /usr/bin/python3
Java:
ant: NO
Java: NO
JNI: NO
Java wrappers: NO
Java tests: NO
Install to: /home/dandelion/dev/opencv-4.8.1/build/install
libpngソースビルド
PNG: build (ver 1.6.37)
getBuildInformation
General configuration for OpenCV 4.8.1 =====================================
Version control: unknown
Platform:
Timestamp: 2023-11-25T15:09:28Z
Host: Linux 6.2.0-33-generic x86_64
CMake: 3.22.1
CMake generator: Unix Makefiles
CMake build tool: /usr/bin/gmake
Configuration: Release
CPU/HW features:
Baseline: SSE SSE2 SSE3
requested: SSE3
Dispatched code generation: SSE4_1 SSE4_2 FP16 AVX AVX2 AVX512_SKX
requested: SSE4_1 SSE4_2 AVX FP16 AVX2 AVX512_SKX
SSE4_1 (16 files): + SSSE3 SSE4_1
SSE4_2 (1 files): + SSSE3 SSE4_1 POPCNT SSE4_2
FP16 (0 files): + SSSE3 SSE4_1 POPCNT SSE4_2 FP16 AVX
AVX (7 files): + SSSE3 SSE4_1 POPCNT SSE4_2 AVX
AVX2 (35 files): + SSSE3 SSE4_1 POPCNT SSE4_2 FP16 FMA3 AVX AVX2
AVX512_SKX (5 files): + SSSE3 SSE4_1 POPCNT SSE4_2 FP16 FMA3 AVX AVX2 AVX_512F AVX512_COMMON AVX512_SKX
C/C++:
Built as dynamic libs?: YES
C++ standard: 11
C++ Compiler: /usr/bin/c++ (ver 11.4.0)
C++ flags (Release): -fsigned-char -W -Wall -Wreturn-type -Wnon-virtual-dtor -Waddress -Wsequence-point -Wformat -Wformat-security -Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wuninitialized -Wsuggest-override -Wno-delete-non-virtual-dtor -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections -msse -msse2 -msse3 -fvisibility=hidden -fvisibility-inlines-hidden -O3 -DNDEBUG -DNDEBUG
C++ flags (Debug): -fsigned-char -W -Wall -Wreturn-type -Wnon-virtual-dtor -Waddress -Wsequence-point -Wformat -Wformat-security -Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wuninitialized -Wsuggest-override -Wno-delete-non-virtual-dtor -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections -msse -msse2 -msse3 -fvisibility=hidden -fvisibility-inlines-hidden -g -O0 -DDEBUG -D_DEBUG
C Compiler: /usr/bin/cc
C flags (Release): -fsigned-char -W -Wall -Wreturn-type -Waddress -Wsequence-point -Wformat -Wformat-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -Wuninitialized -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections -msse -msse2 -msse3 -fvisibility=hidden -O3 -DNDEBUG -DNDEBUG
C flags (Debug): -fsigned-char -W -Wall -Wreturn-type -Waddress -Wsequence-point -Wformat -Wformat-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -Wuninitialized -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections -msse -msse2 -msse3 -fvisibility=hidden -g -O0 -DDEBUG -D_DEBUG
Linker flags (Release): -Wl,--exclude-libs,libippicv.a -Wl,--exclude-libs,libippiw.a -Wl,--gc-sections -Wl,--as-needed -Wl,--no-undefined
Linker flags (Debug): -Wl,--exclude-libs,libippicv.a -Wl,--exclude-libs,libippiw.a -Wl,--gc-sections -Wl,--as-needed -Wl,--no-undefined
ccache: NO
Precompiled headers: NO
Extra dependencies: dl m pthread rt
3rdparty dependencies:
OpenCV modules:
To be built: calib3d core dnn features2d flann gapi highgui imgcodecs imgproc ml objdetect photo stitching video videoio
Disabled: python3 world
Disabled by dependency: -
Unavailable: java python2 ts
Applications: apps
Documentation: NO
Non-free algorithms: NO
GUI: GTK3
GTK+: YES (ver 3.24.33)
GThread : YES (ver 2.72.4)
GtkGlExt: NO
VTK support: YES (ver 7.1.1)
Media I/O:
ZLib: /usr/lib/x86_64-linux-gnu/libz.so (ver 1.2.11)
JPEG: /usr/lib/x86_64-linux-gnu/libjpeg.so (ver 80)
WEBP: /usr/lib/x86_64-linux-gnu/libwebp.so (ver encoder: 0x020f)
PNG: build (ver 1.6.37)
TIFF: /usr/lib/x86_64-linux-gnu/libtiff.so (ver 42 / 4.3.0)
JPEG 2000: OpenJPEG (ver 2.4.0)
OpenEXR: /usr/lib/x86_64-linux-gnu/libImath-2_5.so /usr/lib/x86_64-linux-gnu/libIlmImf-2_5.so /usr/lib/x86_64-linux-gnu/libIex-2_5.so /usr/lib/x86_64-linux-gnu/libHalf-2_5.so /usr/lib/x86_64-linux-gnu/libIlmThread-2_5.so (ver 2_5)
HDR: YES
SUNRASTER: YES
PXM: YES
PFM: YES
Video I/O:
DC1394: NO
FFMPEG: YES
avcodec: YES (58.134.100)
avformat: YES (58.76.100)
avutil: YES (56.70.100)
swscale: YES (5.9.100)
avresample: NO
GStreamer: YES (1.20.3)
v4l/v4l2: YES (linux/videodev2.h)
Parallel framework: pthreads
Trace: YES (with Intel ITT)
Other third-party libraries:
Intel IPP: 2021.8 [2021.8.0]
at: /home/dandelion/dev/opencv-4.8.1/build/3rdparty/ippicv/ippicv_lnx/icv
Intel IPP IW: sources (2021.8.0)
at: /home/dandelion/dev/opencv-4.8.1/build/3rdparty/ippicv/ippicv_lnx/iw
VA: NO
Lapack: YES (/usr/lib/x86_64-linux-gnu/liblapack.so /usr/lib/x86_64-linux-gnu/libcblas.so /usr/lib/x86_64-linux-gnu/libatlas.so)
Eigen: YES (ver 3.4.0)
Custom HAL: NO
Protobuf: build (3.19.1)
Flatbuffers: builtin/3rdparty (23.5.9)
Python (for build): /usr/bin/python3
Java:
ant: NO
Java: NO
JNI: NO
Java wrappers: NO
Java tests: NO
Install to: /home/dandelion/dev/opencv-4.8.1/build/install
libpng(apt)
PNG: /usr/lib/x86_64-linux-gnu/libpng.so (ver 1.6.37)
getBuildInformation
General configuration for OpenCV 4.8.1 =====================================
Version control: unknown
Platform:
Timestamp: 2023-11-25T15:04:36Z
Host: Linux 6.2.0-33-generic x86_64
CMake: 3.22.1
CMake generator: Unix Makefiles
CMake build tool: /usr/bin/gmake
Configuration: Release
CPU/HW features:
Baseline: SSE SSE2 SSE3
requested: SSE3
Dispatched code generation: SSE4_1 SSE4_2 FP16 AVX AVX2 AVX512_SKX
requested: SSE4_1 SSE4_2 AVX FP16 AVX2 AVX512_SKX
SSE4_1 (16 files): + SSSE3 SSE4_1
SSE4_2 (1 files): + SSSE3 SSE4_1 POPCNT SSE4_2
FP16 (0 files): + SSSE3 SSE4_1 POPCNT SSE4_2 FP16 AVX
AVX (7 files): + SSSE3 SSE4_1 POPCNT SSE4_2 AVX
AVX2 (35 files): + SSSE3 SSE4_1 POPCNT SSE4_2 FP16 FMA3 AVX AVX2
AVX512_SKX (5 files): + SSSE3 SSE4_1 POPCNT SSE4_2 FP16 FMA3 AVX AVX2 AVX_512F AVX512_COMMON AVX512_SKX
C/C++:
Built as dynamic libs?: YES
C++ standard: 11
C++ Compiler: /usr/bin/c++ (ver 11.4.0)
C++ flags (Release): -fsigned-char -W -Wall -Wreturn-type -Wnon-virtual-dtor -Waddress -Wsequence-point -Wformat -Wformat-security -Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wuninitialized -Wsuggest-override -Wno-delete-non-virtual-dtor -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections -msse -msse2 -msse3 -fvisibility=hidden -fvisibility-inlines-hidden -O3 -DNDEBUG -DNDEBUG
C++ flags (Debug): -fsigned-char -W -Wall -Wreturn-type -Wnon-virtual-dtor -Waddress -Wsequence-point -Wformat -Wformat-security -Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wuninitialized -Wsuggest-override -Wno-delete-non-virtual-dtor -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections -msse -msse2 -msse3 -fvisibility=hidden -fvisibility-inlines-hidden -g -O0 -DDEBUG -D_DEBUG
C Compiler: /usr/bin/cc
C flags (Release): -fsigned-char -W -Wall -Wreturn-type -Waddress -Wsequence-point -Wformat -Wformat-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -Wuninitialized -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections -msse -msse2 -msse3 -fvisibility=hidden -O3 -DNDEBUG -DNDEBUG
C flags (Debug): -fsigned-char -W -Wall -Wreturn-type -Waddress -Wsequence-point -Wformat -Wformat-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -Wuninitialized -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections -msse -msse2 -msse3 -fvisibility=hidden -g -O0 -DDEBUG -D_DEBUG
Linker flags (Release): -Wl,--exclude-libs,libippicv.a -Wl,--exclude-libs,libippiw.a -Wl,--gc-sections -Wl,--as-needed -Wl,--no-undefined
Linker flags (Debug): -Wl,--exclude-libs,libippicv.a -Wl,--exclude-libs,libippiw.a -Wl,--gc-sections -Wl,--as-needed -Wl,--no-undefined
ccache: NO
Precompiled headers: NO
Extra dependencies: dl m pthread rt
3rdparty dependencies:
OpenCV modules:
To be built: calib3d core dnn features2d flann gapi highgui imgcodecs imgproc ml objdetect photo stitching video videoio
Disabled: python3 world
Disabled by dependency: -
Unavailable: java python2 ts
Applications: apps
Documentation: NO
Non-free algorithms: NO
GUI: GTK3
GTK+: YES (ver 3.24.33)
GThread : YES (ver 2.72.4)
GtkGlExt: NO
VTK support: YES (ver 7.1.1)
Media I/O:
ZLib: /usr/lib/x86_64-linux-gnu/libz.so (ver 1.2.11)
JPEG: /usr/lib/x86_64-linux-gnu/libjpeg.so (ver 80)
WEBP: /usr/lib/x86_64-linux-gnu/libwebp.so (ver encoder: 0x020f)
PNG: /usr/lib/x86_64-linux-gnu/libpng.so (ver 1.6.37)
TIFF: /usr/lib/x86_64-linux-gnu/libtiff.so (ver 42 / 4.3.0)
JPEG 2000: OpenJPEG (ver 2.4.0)
OpenEXR: /usr/lib/x86_64-linux-gnu/libImath-2_5.so /usr/lib/x86_64-linux-gnu/libIlmImf-2_5.so /usr/lib/x86_64-linux-gnu/libIex-2_5.so /usr/lib/x86_64-linux-gnu/libHalf-2_5.so /usr/lib/x86_64-linux-gnu/libIlmThread-2_5.so (ver 2_5)
HDR: YES
SUNRASTER: YES
PXM: YES
PFM: YES
Video I/O:
DC1394: NO
FFMPEG: YES
avcodec: YES (58.134.100)
avformat: YES (58.76.100)
avutil: YES (56.70.100)
swscale: YES (5.9.100)
avresample: NO
GStreamer: YES (1.20.3)
v4l/v4l2: YES (linux/videodev2.h)
Parallel framework: pthreads
Trace: YES (with Intel ITT)
Other third-party libraries:
Intel IPP: 2021.8 [2021.8.0]
at: /home/dandelion/dev/opencv-4.8.1/build/3rdparty/ippicv/ippicv_lnx/icv
Intel IPP IW: sources (2021.8.0)
at: /home/dandelion/dev/opencv-4.8.1/build/3rdparty/ippicv/ippicv_lnx/iw
VA: NO
Lapack: YES (/usr/lib/x86_64-linux-gnu/liblapack.so /usr/lib/x86_64-linux-gnu/libcblas.so /usr/lib/x86_64-linux-gnu/libatlas.so)
Eigen: YES (ver 3.4.0)
Custom HAL: NO
Protobuf: build (3.19.1)
Flatbuffers: builtin/3rdparty (23.5.9)
Python (for build): /usr/bin/python3
Java:
ant: NO
Java: NO
JNI: NO
Java wrappers: NO
Java tests: NO
Install to: /home/dandelion/dev/opencv-4.8.1/build/install