problem with Cross-compiling beaglebone black opencv

[peer23peer]

Hi all,

I’m new to the forum so a small introduction of me/my project. I’m a student at the university of applied science in Arhnem (Netherlands) majoring in mechanical engineering and I’m currently following an minor in embedded vision design. The project I’m currently working on is a soil analyzer. It works with the beaglebone and and a USB microscope webcam. It analyzes and classifies grains of soil/sand using various vision algorithms and Neural Nets etc. The project is hosted on github http://peer23peer.github.io/Soil/

I normally build the project on the beaglebone using visual studio 2013 and visualgdb, and it works great for me. But because my code keeps growing and expanding so does my compilation time. I’m currently trying to get the project setup for cross compilation. Because I use a lot of c++11 syntax I switch to using linearo. This works fine for the libraries that don’t use openCV but I ran in to trouble with those who do:

1>

Build started: Project: SoilMath, Configuration: Debug_CC Win32

1>  VisualGDB: Run "cmd.exe /c "C:Program Files (x86)SysprogsVisualGDBmake.exe" CONFIG=Debug_CC" in directory "D:OneDriveOpleidingHTS_HANMinor2CPPSoilSoilMath" on local computer

1>  D:/SysGCC/linaro/bin/arm-linux-gnueabihf-g++.exe -std=c++11 -ggdb -ffunction-sections -O0   -DDEBUG  -fPIC -c Sort.cpp -o Debug_CC/Sort.o -MD -MF Debug_CC/Sort.dep

1>  D:/SysGCC/linaro/bin/arm-linux-gnueabihf-g++.exe -shared -o Debug_CC/SoilMath -Wl,-gc-sections    -Wl,--start-group Debug_CC/Sort.o   -Wl,--rpath='$ORIGIN'  -Wl,-soname,SoilMath  -Wl,--end-group

2>

Build started: Project: Vision, Configuration: Debug_CC Win32

2>  VisualGDB: Run "cmd.exe /c "C:Program Files (x86)SysprogsVisualGDBmake.exe" CONFIG=Debug_CC" in directory "D:OneDriveOpleidingHTS_HANMinor2CPPSoilVision" on local computer

2>  D:/SysGCC/linaro/bin/arm-linux-gnueabihf-g++.exe --sysroot=D:/sysgcc/linaro/arm-linux-gnueabihf/libc -std=c++11 -ggdb -ffunction-sections -O0  -I/usr/local/include -I/usr/local/include/opencv -DDEBUG  -fPIC -c Conversion.cpp -o Debug_CC/Conversion.o -MD -MF Debug_CC/Conversion.dep

2>  In file included from Conversion.h:2:0,

2>                   from Conversion.cpp:4:

2>D:OneDriveOpleidingHTS_HANMinor2CPPSoilVisionImageProcessing.h(11,28): fatal error : opencv2/core.hpp: No such file or directory

2>   #include 

2>                              ^

2>  compilation terminated.

2>  make: *** [Debug_CC/Conversion.o] Error 1

2>

2>  Command exited with code 2

2>  Executable: cmd.exe

2>  Arguments: /c "C:Program Files (x86)SysprogsVisualGDBmake.exe" CONFIG=Debug_CC

2>  Directory: D:OneDriveOpleidingHTS_HANMinor2CPPSoilVision

2>VisualGDB : error : Command-line action failed

2>EXEC : error : Build has failed. See the Output window for more details.

2>C:Program Files (x86)MSBuildMicrosoft.Cppv4.0V120Microsoft.MakeFile.Targets(38,5): error MSB3073: The command ""C:Program Files (x86)SysprogsVisualGDB\VisualGDB.exe" /build "D:OneDriveOpleidingHTS_HANMinor2CPPSoilVisionVision.vcxproj" "/solution:D:OneDriveOpleidingHTS_HANMinor2CPPSoilSoilShellSoilShell.sln" "/config:Debug_CC" "/platform:Win32"" exited with code 1.

========== Build: 1 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========

The sysroot is synced and opencv headers are present in the linearo/libc folder

the current make file used in the shared library Vision is:

#Generated by VisualGDB (http://visualgdb.com)
#DO NOT EDIT THIS FILE MANUALLY UNLESS YOU ABSOLUTELY NEED TO
#USE VISUALGDB PROJECT PROPERTIES DIALOG INSTEAD

BINARYDIR := Debug_CC

#Toolchain
CC := D:/SysGCC/linaro/bin/arm-linux-gnueabihf-gcc.exe
CXX := D:/SysGCC/linaro/bin/arm-linux-gnueabihf-g++.exe
LD := $(CXX)
AR := D:/SysGCC/linaro/bin/arm-linux-gnueabihf-ar.exe
OBJCOPY := D:/SysGCC/linaro/bin/arm-linux-gnueabihf-objcopy.exe

#Additional flags
PREPROCESSOR_MACROS := DEBUG
INCLUDE_DIRS := /usr/local/include /usr/local/include/opencv
LIBRARY_DIRS := /usr/lib
LIBRARY_NAMES := opencv_calib3d opencv_core opencv_features2d opencv_flann opencv_highgui opencv_imgcodecs opencv_imgproc opencv_ml opencv_objdetect opencv_photo opencv_shape opencv_stitching opencv_superres opencv_ts opencv_video opencv_videoio opencv_videostab
ADDITIONAL_LINKER_INPUTS :=
MACOS_FRAMEWORKS :=
LINUX_PACKAGES :=

CFLAGS := --sysroot=D:/sysgcc/linaro/arm-linux-gnueabihf/libc -std=c++11 -ggdb -ffunction-sections -O0
CXXFLAGS := --sysroot=D:/sysgcc/linaro/arm-linux-gnueabihf/libc -std=c++11 -ggdb -ffunction-sections -O0
ASFLAGS :=
COMMONFLAGS :=

LDFLAGS :=  -Wl,-gc-sections

START_GROUP := -Wl,--start-group
END_GROUP := -Wl,--end-group

#Additional options detected from testing the toolchain
IS_LINUX_PROJECT := 1

And my own vision library can be found here:
https://github.com/peer23peer/Soil/tree/master/Vision

I allready tried raspberry related questions:
http://forum.sysprogs.com/viewtopic.php?f=5&t=2977&p=6903&hilit=opencv+cross#p6903
http://forum.sysprogs.com/viewtopic.php?f=5&t=2725&p=6145&hilit=opencv+cross#p6145

Any help and suggestions are appreciated.

[support]

Hi,

The “/usr/local/include/opencv” syntax won’t work with a cross-compiler. Please use either the full Windows path (D:/SysGCC/linaro/…/include/opencv) or the ‘=’ syntax (=/usr/local/include/opencv).

[peer23peer]

Hi Bazis,

Thank you for the reply. I didn’t test it because it took the admins short of a week to allow my message and I was/am under a lot of time pressure. I therefor didn’t have time to waste and switch to Cmake and an external Linux computer. In this new setup I compile and test general c++ code on an external Linux X64 computer using VisualGDB and switch to my BBB when needed. Although it isn’t cross compiling, this setup suits me well.

The new project structure and source code can be found here https://github.com/peer23peer/VisionSoilAnalyzer

[support]

Hi,

Sorry for the delayed reply. We have been switching to the new forum engine. If you need an urgent answer, please contact our support email, we answer that within 24-48 hours.

Let us know if you experience further problems with your setup.

• This reply was modified 9 years, 9 months ago by support.

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