Hello,
I am a little bit new to using the Yocto build environment. I am trying to include OpenCV in a Yocto distribution for I.MX 8 board to work with the librealsense library (included the yocto layer inside build) and implement the IR sample example. I included the example in the build using Cmake. The image is built successfully and the IR_sample.cpp program is included. But when running the IR_sample app I keep getting an opencv error (see below). I see that libgtk-3.so.0 is included in my libraries but not anything referring to libgtk2.
I thought that adding "-DWITH_QT=OFF -DWITH_GTK=ON" to cmake commands would fix the issue but that did not work and the same error occurred. I am not sure if there is some issue with using OpenCV on wayland/weston.
Please let me know of any good recommendations that I could try. Thanks!
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Error:
terminate called after throwing an instance of 'cv::Exception'
what(): OpenCV(4.5.2) ../../highgui/src/windo.cpp:662: error: (-2:Unspecified error) The function is not implemented. Rebuild the library with Windows, GTK+ 2.x or Cocoa support. If you are on Ubuntu or Debian, install libgtk2.0-dev and pkg-config, then re-run cmake or configure script in function 'cvNamedWindow'.
Build Configuration:
BB_VERSION = 1.50.0
BUILD_SYS = x86_64-linux
NATIVELSBSTRING = universal
TARGE_SYS = aarch64-poky-linux
MACHINE = sm2s-imx8mp
DISTRO = poky
DISTRO_VERSION = 3.3
DISTRO_FEATURES = Qt5 + Wayland + Weston
Bitbake Recipe:
LICENSE = "MIT"
LIC_FILES_CHKSUM = "file://${COMMON_LICENSE_DIR}/MIT;md5=0835ade698e0bcf8506ecda2f7b4f302"
SRC_URI = "file://CMakeLists.txt \
file://IR_sample.cpp "
S = "${WORKDIR}"
inherit pkgconfig cmake
LDFLAGS_append += "-L${WORKDIR}/lib"
TARGET_CC_ARCH += "${LDFLAGS}"
# Specify any options you want to pass to cmake using EXTRA_OECMAKE:
EXTRA_OECMAKE = "-DWITH_QT=OFF -DWITH_GTK=ON"
# Package dependency declaration
DEPENDS += "opencv librealsense2"
RDEPENDS_${PN} = "opencv librealsense2"
CMakeLists.txt File:
cmake_minimum_required(VERSION 2.8)
project (IR_sample)
set(CMAKE_CXX_STANDARD 11)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
#Bring the headers, into the project
find_package( OpenCV REQUIRED ) # locate OpenCV in system
find_package( realsense2 REQUIRED ) # locate realsense2 in system
include_directories(include ${OpenCV_INCLUDE_DIRS} ${realsense_INCLUDE_DIR})
add_executable(IR_sample IR_sample.cpp)
target_link_libraries(IR_sample ${realsense2_LIBRARY} ${OpenCV_LIBS})
install(TARGETS IR_sample RUNTIME DESTINATION bin)
