我已经从opencv存储库中提取了最新的更改，并且正在尝试从源代码进行编译。上一次我尝试使用OpenCV 3.2.2进行此操作，但是这次是在4.0上，我遇到了很多这样的错误：
[ 57%] Building CXX object modules/core/CMakeFiles/opencv_core.dir/mathfuncs_core.avx2.cpp.o
In file included from /Users/George/Downloads/Grouped/cv/opencv/buildDNNJava/modules/core/mathfuncs_core.avx2.cpp:2:
In file included from /Users/George/Downloads/Grouped/cv/opencv/modules/core/src/precomp.hpp:49:
In file included from /Users/George/Downloads/Grouped/cv/opencv/modules/core/include/opencv2/core/utility.hpp:56:
In file included from /Users/George/Downloads/Grouped/cv/opencv/modules/core/include/opencv2/core.hpp:52:
/Users/George/Downloads/Grouped/cv/opencv/modules/core/include/opencv2/core/cvdef.h:772:39: error: use of undeclared identifier '_mm_cvtps_ph'; did you mean '_mm_cvtss_sd'?
w = (ushort)_mm_cvtsi128_si32(_mm_cvtps_ph(v, 0));
^~~~~~~~~~~~
_mm_cvtss_sd
/Applications/IDEsAndEditors/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../lib/clang/7.0.0/include/emmintrin.h:420:1: note: '_mm_cvtss_sd' declared here
_mm_cvtss_sd(__m128d __a, __m128 __b)
^
In file included from /Users/George/Downloads/Grouped/cv/opencv/buildDNNJava/modules/core/mathfuncs_core.avx2.cpp:2:
In file included from /Users/George/Downloads/Grouped/cv/opencv/modules/core/src/precomp.hpp:49:
In file included from /Users/George/Downloads/Grouped/cv/opencv/modules/core/include/opencv2/core/utility.hpp:56:
In file included from /Users/George/Downloads/Grouped/cv/opencv/modules/core/include/opencv2/core.hpp:52:
/Users/George/Downloads/Grouped/cv/opencv/modules/core/include/opencv2/core/cvdef.h:772:55: error: cannot initialize a parameter of type '__m128' (vector of 4 'float' values) with an rvalue of type 'int'
w = (ushort)_mm_cvtsi128_si32(_mm_cvtps_ph(v, 0));
^
/Applications/IDEsAndEditors/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../lib/clang/7.0.0/include/emmintrin.h:420:34: note: passing argument to parameter '__b' here
_mm_cvtss_sd(__m128d __a, __m128 __b)
^
In file included from /Users/George/Downloads/Grouped/cv/opencv/buildDNNJava/modules/core/mathfuncs_core.avx2.cpp:2:
In file included from /Users/George/Downloads/Grouped/cv/opencv/modules/core/src/precomp.hpp:49:
In file included from /Users/George/Downloads/Grouped/cv/opencv/modules/core/include/opencv2/core/utility.hpp:56:
In file included from /Users/George/Downloads/Grouped/cv/opencv/modules/core/include/opencv2/core.hpp:52:
/Users/George/Downloads/Grouped/cv/opencv/modules/core/include/opencv2/core/cvdef.h:803:26: error: use of undeclared identifier '_mm_cvtph_ps'; did you mean '_mm_cvtpd_ps'?
_mm_store_ss(&f, _mm_cvtph_ps(_mm_cvtsi32_si128(w)));
^~~~~~~~~~~~
_mm_cvtpd_ps
/Applications/IDEsAndEditors/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../lib/clang/7.0.0/include/emmintrin.h:376:1: note: '_mm_cvtpd_ps' declared here
_mm_cvtpd_ps(__m128d __a)
^
In file included from /Users/George/Downloads/Grouped/cv/opencv/buildDNNJava/modules/core/mathfuncs_core.avx2.cpp:2:
In file included from /Users/George/Downloads/Grouped/cv/opencv/modules/core/src/precomp.hpp:85:
In file included from /Users/George/Downloads/Grouped/cv/opencv/modules/core/include/opencv2/core/hal/intrin.hpp:179:
/Users/George/Downloads/Grouped/cv/opencv/modules/core/include/opencv2/core/hal/intrin_avx.hpp:2551:24: error: use of undeclared identifier '_mm256_cvtph_ps'; did you mean '_mm256_cvtpd_ps'?
return v_float32x8(_mm256_cvtph_ps(_mm_loadu_si128((const __m128i*)ptr)));
^~~~~~~~~~~~~~~
_mm256_cvtpd_ps
/Applications/IDEsAndEditors/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../lib/clang/7.0.0/include/avxintrin.h:539:1: note: '_mm256_cvtpd_ps' declared here
_mm256_cvtpd_ps(__m256d __a)
^
In file included from /Users/George/Downloads/Grouped/cv/opencv/buildDNNJava/modules/core/mathfuncs_core.avx2.cpp:2:
In file included from /Users/George/Downloads/Grouped/cv/opencv/modules/core/src/precomp.hpp:85:
In file included from /Users/George/Downloads/Grouped/cv/opencv/modules/core/include/opencv2/core/hal/intrin.hpp:179:
/Users/George/Downloads/Grouped/cv/opencv/modules/core/include/opencv2/core/hal/intrin_avx.hpp:2551:40: error: cannot initialize a parameter of type '__m256d' (vector of 4 'double' values) with an rvalue of type '__m128i' (vector of 2 'long long' values)
return v_float32x8(_mm256_cvtph_ps(_mm_loadu_si128((const __m128i*)ptr)));
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/Applications/IDEsAndEditors/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../lib/clang/7.0.0/include/avxintrin.h:539:25: note: passing argument to parameter '__a' here
_mm256_cvtpd_ps(__m256d __a)
^
In file included from /Users/George/Downloads/Grouped/cv/opencv/buildDNNJava/modules/core/mathfuncs_core.avx2.cpp:2:
In file included from /Users/George/Downloads/Grouped/cv/opencv/modules/core/src/precomp.hpp:85:
In file included from /Users/George/Downloads/Grouped/cv/opencv/modules/core/include/opencv2/core/hal/intrin.hpp:179:
/Users/George/Downloads/Grouped/cv/opencv/modules/core/include/opencv2/core/hal/intrin_avx.hpp:2556:18: error: use of undeclared identifier '_mm256_cvtps_ph'
__m128i ah = _mm256_cvtps_ph(a.val, 0);
^
6 errors generated.
make[2]: *** [modules/core/CMakeFiles/opencv_core.dir/mathfuncs_core.avx2.cpp.o] Error 1
make[1]: *** [modules/core/CMakeFiles/opencv_core.dir/all] Error 2
make: *** [all] Error 2
我在OSX 10.11.6上使用Xcode 7.0，这是cmake的输出：
-- Looking for ccache - not found
-- FP16 is not supported by C++ compiler
-- AVX_512F is not supported by C++ compiler
-- AVX512_SKX is not supported by C++ compiler
-- Dispatch optimization FP16 is not available, skipped
-- Dispatch optimization AVX512_SKX is not available, skipped
-- libjpeg-turbo: VERSION = 1.5.3, BUILD = opencv-4.0.0-dev-libjpeg-turbo
-- Checking for module 'gstreamer-base-1.0'
-- No package 'gstreamer-base-1.0' found
-- Checking for module 'gstreamer-video-1.0'
-- No package 'gstreamer-video-1.0' found
-- Checking for module 'gstreamer-app-1.0'
-- No package 'gstreamer-app-1.0' found
-- Checking for module 'gstreamer-riff-1.0'
-- No package 'gstreamer-riff-1.0' found
-- Checking for module 'gstreamer-pbutils-1.0'
-- No package 'gstreamer-pbutils-1.0' found
-- Checking for module 'gstreamer-base-0.10'
-- No package 'gstreamer-base-0.10' found
-- Checking for module 'gstreamer-video-0.10'
-- No package 'gstreamer-video-0.10' found
-- Checking for module 'gstreamer-app-0.10'
-- No package 'gstreamer-app-0.10' found
-- Checking for module 'gstreamer-riff-0.10'
-- No package 'gstreamer-riff-0.10' found
-- Checking for module 'gstreamer-pbutils-0.10'
-- No package 'gstreamer-pbutils-0.10' found
-- Checking for module 'libdc1394-2'
-- No package 'libdc1394-2' found
-- Checking for module 'libdc1394'
-- No package 'libdc1394' found
-- found Intel IPP (ICV version): 2019.0.0 [2019.0.0 Gold]
-- at: /Users/George/Downloads/Grouped/cv/opencv/buildDNNJava/3rdparty/ippicv/ippicv_mac/icv
-- Cannot find Intel IPP Integration Wrappers, optimizations will be limited. Use IPPIWROOT to set custom location
-- Found apache ant: /usr/local/bin/ant (1.9.7)
-- Found VTK 7.1.1 (/usr/local/Cellar/vtk/7.1.1_1/lib/cmake/vtk-7.1/UseVTK.cmake)
-- OpenCV Python: during development append to PYTHONPATH: /Users/George/Downloads/Grouped/cv/opencv/buildDNNJava/python_loader
-- Registering hook 'INIT_MODULE_SOURCES_opencv_dnn': /Users/George/Downloads/Grouped/cv/opencv/modules/dnn/cmake/hooks/INIT_MODULE_SOURCES_opencv_dnn.cmake
-- opencv_dnn: filter out ocl4dnn source code
-- Excluding from source files list: <BUILD>/modules/dnn/layers/layers_common.avx512_skx.cpp
--
-- General configuration for OpenCV 4.0.0-dev =====================================
-- Version control: 4.0.0-29-g02cc1cd
--
-- Platform:
-- Timestamp: 2018-11-23T11:45:27Z
-- Host: Darwin 15.6.0 x86_64
-- CMake: 3.12.4
-- CMake generator: Unix Makefiles
-- CMake build tool: /usr/bin/make
-- Configuration: Release
--
-- CPU/HW features:
-- Baseline: SSE SSE2 SSE3 SSSE3
-- requested: DETECT
-- Dispatched code generation: SSE4_1 SSE4_2 AVX AVX2
-- requested: SSE4_1 SSE4_2 AVX FP16 AVX2 AVX512_SKX
-- SSE4_1 (5 files): + SSE4_1
-- SSE4_2 (1 files): + SSE4_1 POPCNT SSE4_2
-- AVX (4 files): + SSE4_1 POPCNT SSE4_2 AVX
-- AVX2 (11 files): + SSE4_1 POPCNT SSE4_2 FMA3 AVX AVX2
--
-- C/C++:
-- Built as dynamic libs?: YES
-- C++ Compiler: /Applications/IDEsAndEditors/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/c++ (ver 7.0.0.7000072)
-- C++ flags (Release): -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wuninitialized -Winit-self -Wno-narrowing -Wno-delete-non-virtual-dtor -Wno-unnamed-type-template-args -Wno-comment -fdiagnostics-show-option -Wno-long-long -Qunused-arguments -Wno-semicolon-before-method-body -ffunction-sections -fdata-sections -fvisibility=hidden -fvisibility-inlines-hidden -O3 -DNDEBUG -DNDEBUG -g1
-- C++ flags (Debug): -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wuninitialized -Winit-self -Wno-narrowing -Wno-delete-non-virtual-dtor -Wno-unnamed-type-template-args -Wno-comment -fdiagnostics-show-option -Wno-long-long -Qunused-arguments -Wno-semicolon-before-method-body -ffunction-sections -fdata-sections -fvisibility=hidden -fvisibility-inlines-hidden -g -O0 -DDEBUG -D_DEBUG
-- C Compiler: /Applications/IDEsAndEditors/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/cc
-- C flags (Release): -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wuninitialized -Winit-self -Wno-narrowing -Wno-delete-non-virtual-dtor -Wno-unnamed-type-template-args -Wno-comment -fdiagnostics-show-option -Wno-long-long -Qunused-arguments -Wno-semicolon-before-method-body -ffunction-sections -fdata-sections -fvisibility=hidden -fvisibility-inlines-hidden -O3 -DNDEBUG -DNDEBUG -g1
-- C flags (Debug): -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wuninitialized -Winit-self -Wno-narrowing -Wno-delete-non-virtual-dtor -Wno-unnamed-type-template-args -Wno-comment -fdiagnostics-show-option -Wno-long-long -Qunused-arguments -Wno-semicolon-before-method-body -ffunction-sections -fdata-sections -fvisibility=hidden -fvisibility-inlines-hidden -g -O0 -DDEBUG -D_DEBUG
-- Linker flags (Release):
-- Linker flags (Debug):
-- ccache: NO
-- Precompiled headers: NO
-- Extra dependencies:
-- 3rdparty dependencies:
--
-- OpenCV modules:
-- To be built: calib3d core dnn features2d flann gapi highgui imgcodecs imgproc java java_bindings_generator ml objdetect photo python_bindings_generator stitching ts video videoio
-- Disabled: world
-- Disabled by dependency: -
-- Unavailable: js python2 python3
-- Applications: apps
-- Documentation: NO
-- Non-free algorithms: NO
--
-- GUI:
-- Cocoa: YES
-- VTK support: YES (ver 7.1.1)
--
-- Media I/O:
-- ZLib: build (ver 1.2.11)
-- JPEG: build-libjpeg-turbo (ver 1.5.3-62)
-- WEBP: build (ver encoder: 0x020e)
-- PNG: build (ver 1.6.35)
-- TIFF: build (ver 42 - 4.0.9)
-- JPEG 2000: build (ver 1.900.1)
-- OpenEXR: build (ver 1.7.1)
-- HDR: YES
-- SUNRASTER: YES
-- PXM: YES
-- PFM: YES
--
-- Video I/O:
-- DC1394: NO
-- FFMPEG: YES
-- avcodec: YES (ver 57.89.100)
-- avformat: YES (ver 57.71.100)
-- avutil: YES (ver 55.58.100)
-- swscale: YES (ver 4.6.100)
-- avresample: YES (ver 3.5.0)
-- GStreamer: NO
-- AVFoundation: YES
--
-- Parallel framework: GCD
--
-- Trace: YES (with Intel ITT)
--
-- Other third-party libraries:
-- Intel IPP: 2019.0.0 Gold [2019.0.0]
-- at: /Users/George/Downloads/Grouped/cv/opencv/buildDNNJava/3rdparty/ippicv/ippicv_mac/icv
-- Intel IPP IW: NO
-- Eigen: YES (ver 3.3.4)
-- Custom HAL: NO
-- Protobuf: build (3.5.1)
--
-- OpenCL: YES (no extra features)
-- Include path: NO
-- Link libraries: -framework OpenCL
--
-- Python (for build): /usr/local/bin/python2.7
--
-- Java:
-- ant: /usr/local/bin/ant (ver 1.9.7)
-- JNI: /Library/Java/JavaVirtualMachines/jdk1.8.0_91.jdk/Contents/Home/include /Library/Java/JavaVirtualMachines/jdk1.8.0_91.jdk/Contents/Home/include/darwin /Library/Java/JavaVirtualMachines/jdk1.8.0_91.jdk/Contents/Home/include
-- Java wrappers: YES
-- Java tests: NO
--
-- Install to: /Users/George/Downloads/Grouped/cv/opencv/buildDNNJava/install
-- -----------------------------------------------------------------
--
-- Configuring done
-- Generating done
-- Build files have been written to: /Users/George/Downloads/Grouped/cv/opencv/buildDNNJava
我认为这与Accelerate / BLAS / LAPACK有关，并且我将WITH_LAPACK设置为OFF，但是错误仍然存在。
我应该注意的任何线索吗？
更新，我已经重新阅读了这些错误，它们与AVX2 CPU指令有关。 我记得曾经在3.2.2上使用过AVX2优化，但是我暂时将其禁用，可以编译。
在构建emscripten js模块时遇到一些错误：
[ 97%] Building CXX object modules/js/CMakeFiles/opencv_js.dir/bindings.cpp.o
In file included from /Users/George/Downloads/Grouped/cv/opencv/buildDNNJava/modules/js/bindings.cpp:71:
In file included from /Users/George/Downloads/Libraries/emsdk_portable/emscripten/1.35.0/system/include/emscripten/bind.h:10:
In file included from /Users/George/Downloads/Libraries/emsdk_portable/emscripten/1.35.0/system/include/emscripten/val.h:4:
/Users/George/Downloads/Libraries/emsdk_portable/emscripten/1.35.0/system/include/emscripten/wire.h:383:37: warning: declaration shadows a field of 'memory_view<ElementType>' [-Wshadow]
explicit memory_view(size_t size, const ElementType* data)
^
/Users/George/Downloads/Libraries/emsdk_portable/emscripten/1.35.0/system/include/emscripten/wire.h:388:22: note: previous declaration is here
const size_t size; // in elements, not bytes
^
/Users/George/Downloads/Libraries/emsdk_portable/emscripten/1.35.0/system/include/emscripten/wire.h:383:62: warning: declaration shadows a field of 'memory_view<ElementType>' [-Wshadow]
explicit memory_view(size_t size, const ElementType* data)
^
/Users/George/Downloads/Libraries/emsdk_portable/emscripten/1.35.0/system/include/emscripten/wire.h:389:27: note: previous declaration is here
const void* const data;
^
In file included from /Users/George/Downloads/Grouped/cv/opencv/buildDNNJava/modules/js/bindings.cpp:71:
In file included from /Users/George/Downloads/Libraries/emsdk_portable/emscripten/1.35.0/system/include/emscripten/bind.h:10:
/Users/George/Downloads/Libraries/emsdk_portable/emscripten/1.35.0/system/include/emscripten/val.h:173:9: error: static_assert failed "GenericWireType must be 8 bytes"
static_assert(sizeof(GenericWireType) == 8, "GenericWireType must be 8 bytes");
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/Users/George/Downloads/Libraries/emsdk_portable/emscripten/1.35.0/system/include/emscripten/val.h:439:39: warning: declaration shadows a field of 'emscripten::val' [-Wshadow]
explicit val(internal::EM_VAL handle)
^
/Users/George/Downloads/Libraries/emsdk_portable/emscripten/1.35.0/system/include/emscripten/val.h:464:26: note: previous declaration is here
internal::EM_VAL handle;
^
In file included from /Users/George/Downloads/Grouped/cv/opencv/buildDNNJava/modules/js/bindings.cpp:71:
/Users/George/Downloads/Libraries/emsdk_portable/emscripten/1.35.0/system/include/emscripten/bind.h:841:34: warning: unused parameter 'v' [-Wunused-parameter]
static void* share(void* v) {
^
/Users/George/Downloads/Libraries/emsdk_portable/emscripten/1.35.0/system/include/emscripten/bind.h:887:38: warning: declaration shadows a field of 'emscripten::smart_ptr_trait<shared_ptr<type-parameter-0-0> >::val_deleter' [-Wshadow]
explicit val_deleter(val v)
^
/Users/George/Downloads/Libraries/emsdk_portable/emscripten/1.35.0/system/include/emscripten/bind.h:896:17: note: previous declaration is here
val v;
^
/Users/George/Downloads/Libraries/emsdk_portable/emscripten/1.35.0/system/include/emscripten/bind.h:924:32: warning: declaration shadows a field of 'wrapper<T>' [-Wshadow]
explicit wrapper(val&& wrapped, Args&&... args)
^
/Users/George/Downloads/Libraries/emsdk_portable/emscripten/1.35.0/system/include/emscripten/bind.h:941:13: note: previous declaration is here
val wrapped;
^
/Users/George/Downloads/Libraries/emsdk_portable/emscripten/1.35.0/system/include/emscripten/bind.h:1010:20: error: cannot cast 'cv::Algorithm *' to 'cv::Feature2D *' via virtual base 'cv::Algorithm'
return static_cast<To*>(ptr);
^~~~~~~~~~~~~~~~~~~~~
/Users/George/Downloads/Libraries/emsdk_portable/emscripten/1.35.0/system/include/emscripten/bind.h:1005:21: note: in instantiation of function template specialization 'emscripten::base<cv::Algorithm>::convertPointer<cv::Algorithm, cv::Feature2D>' requested here
return &convertPointer<BaseClass, ClassType>;
^
/Users/George/Downloads/Libraries/emsdk_portable/emscripten/1.35.0/system/include/emscripten/bind.h:1070:53: note: in instantiation of function template specialization 'emscripten::base<cv::Algorithm>::getDowncaster<cv::Feature2D>' requested here
auto downcast = BaseSpecifier::template getDowncaster<ClassType>();
^
/Users/George/Downloads/Grouped/cv/opencv/buildDNNJava/modules/js/bindings.cpp:3470:5: note: in instantiation of member function 'emscripten::class_<cv::Feature2D, emscripten::base<cv::Algorithm> >::class_' requested here
emscripten::class_<cv::Feature2D ,base<Algorithm>>("Feature2D")
^
6 warnings and 2 errors generated.
因此，我很高兴听到更多有关如何克服这些问题的信息，并可能启用AVX指令。