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opencv交叉编译失败，原因是__fp16没有命名类型

[英]opencv crosscompilation failed with __fp16 does not name type

原文 2016-09-17 10:37:37 3 1 c++/ opencv/ cross-compiling

I am trying to cross compile opencv, but it fails with cvdef.h:314:5: error: '__fp16' does not name a type. 我正在尝试交叉编译opencv，但是它失败并显示cvdef.h：314：5：错误：'__fp16'未命名类型。

The cross compiler has hf support and the fp16 extension. 交叉编译器具有hf支持和fp16扩展。

... --enable-languages=c,c++ --with-cpu=cortex-a53 --with-fpu=vfpv3-fp16 --with-float=hard --with-pkgversion='crosstool-NG crosstool-ng-1.22.0' --enable-__cxa_atexit --disable-libmudflap --disable-libgomp --disable-libssp --disable-libquadmath ... ... --enable-languages = c，c ++ --with-cpu = cortex-a53 --with-fpu = vfpv3-fp16 --with-float = hard --with-pkgversion ='crosstool-NG crosstool-ng -1.22.0'--enable -__ cxa_atexit --disable-libmudflap --disable-libgomp --disable-libssp --disable-libquadmath ...

I have tried to set extra flags in the cmake file: 我试图在cmake文件中设置额外的标志：

set(GCC_COMPILER_VERSION "5.2.0" CACHE STRING "GCC Compiler version") set(GNU_MACHINE "arm-linux-gnueabihf" CACHE STRING "GNU compiler triple") 设置（GCC_COMPILER_VERSION“ 5.2.0”缓存字符串“ GCC编译器版本”）设置（GNU_MACHINE“ arm-linux-gnueabihf”缓存字符串“ GNU编译器三重”）

set(CMAKE_CXX_FLAGS " -mfloat-abi=hard -mfp16-format=ieee") 设置（CMAKE_CXX_FLAGS“ -mfloat-abi = hard -mfp16-format = ieee”）
set(CMAKE_C_FLAGS " -mfloat-abi=hard -mfp16-format=ieee") 设置（CMAKE_C_FLAGS“ -mfloat-abi = hard -mfp16-format = ieee”）

include("${CMAKE_CURRENT_LIST_DIR}/arm.toolchain.cmake") include（“ $ {CMAKE_CURRENT_LIST_DIR} /arm.toolchain.cmake”）

But it looks like the flags were ignored. 但是看起来这些标志被忽略了。 cmake configuration output: cmake配置输出：

-- 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 -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wno-narrowing -Wno-delete-non-virtual-dtor -Wno-comment -fdiagnostics-show-option -pthread -fomit-frame-pointer -ffunction-sections -fvisibility=hidden -fvisibility-inlines-hidden -O2 -DNDEBUG -DNDEBUG -C ++标志（发布）：-fsigned-char -W -Wall -Werror =返回类型-Werror =非虚拟-tor -Werror =地址-Werror =序列点-Wformat -Werror = format-security -Wmissing -声明-Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wno-narrowing -Wno-delete-non-virtual-dtor -Wno-comment -fdiagnostics-show-option -pthread -fomit-frame-pointer -ffunction-sections -fvisibility =隐藏-fvisibility-inlines-隐藏-O2 -DNDEBUG -DNDEBUG

thx for your help. 谢谢您的帮助。