问题
I am trying to get a very simple recipe to build using bitbake, and I cannot figure out why opencv cannot be included. All the example I have found use this setup and appear to have no problem linking against opencv. I am fairly new to bitbake, and fear I am be misunderstanding something very simple. Thanks in advance for any help you can provide.
Recipie:
UMMARY = "Hello"
SRCNAME = "Hello"
depends += "opencv"
LICENSE = "PSF"
LIC_FILES_CHKSUM = "file://${TOPDIR}/Yocto/Recipies/LICENSE.txt;md5=7424386ffe323e815ee62ee9ad591dd8"
SRCREV = "master"
SRC_URI = "https://developer-binaries.s3.amazonaws.com/hello-1.0.zip"
SRC_URI[md5sum] = "ca5940b7e30c489c4304c467252980f5"
inherit pkgconfig cmake
CMakeLists:
PROJECT(Hello)
CMAKE_MINIMUM_REQUIRED(VERSION 2.8.11)
FIND_PACKAGE(OpenCV REQUIRED)
ADD_EXECUTABLE(Hello
Main.cpp)
INSTALL(FILES
${CMAKE_BINARY_DIR}/Hello
DESTINATION ${exec_prefix}/bin)
Bitbake Error:
ERROR: Function failed: do_configure (log file is located at /home/ubuntu/oe-core/build/out-eglibc/work/armv7at2hf-vfp-neon-angstrom-linux-gnueabi/hello/1.0-r0/temp/log.do_configure.5288)
ERROR: Logfile of failure stored in: /home/ubuntu/oe-core/build/out-eglibc/work/armv7at2hf-vfp-neon-angstrom-linux-gnueabi/hello/1.0-r0/temp/log.do_configure.5288
Log data follows:
| DEBUG: Executing python function sysroot_cleansstate
| DEBUG: Python function sysroot_cleansstate finished
| DEBUG: SITE files ['endian-little', 'bit-32', 'arm-common', 'common-linux', 'common-glibc', 'arm-linux', 'arm-linux-gnueabi', 'common']
| DEBUG: Executing shell function autotools_preconfigure
| DEBUG: Shell function autotools_preconfigure finished
| DEBUG: Executing python function autotools_copy_aclocals
| DEBUG: Python function autotools_copy_aclocals finished
| DEBUG: Executing shell function do_configure
| -- The C compiler identification is GNU 4.8.3
| -- The CXX compiler identification is GNU 4.8.3
| -- Check for working C compiler: /home/ubuntu/oe-core/build/out-eglibc/sysroots/x86_64-linux/usr/bin/armv7at2hf-vfp-neon-angstrom-linux-gnueabi/arm-angstrom-linux-gnueabi-gcc
| -- Check for working C compiler: /home/ubuntu/oe-core/build/out-eglibc/sysroots/x86_64-linux/usr/bin/armv7at2hf-vfp-neon-angstrom-linux-gnueabi/arm-angstrom-linux-gnueabi-gcc -- works
| -- Detecting C compiler ABI info
| -- Detecting C compiler ABI info - done
| -- Check for working CXX compiler: /home/ubuntu/oe-core/build/out-eglibc/sysroots/x86_64-linux/usr/bin/armv7at2hf-vfp-neon-angstrom-linux-gnueabi/arm-angstrom-linux-gnueabi-g++
| -- Check for working CXX compiler: /home/ubuntu/oe-core/build/out-eglibc/sysroots/x86_64-linux/usr/bin/armv7at2hf-vfp-neon-angstrom-linux-gnueabi/arm-angstrom-linux-gnueabi-g++ -- works
| -- Detecting CXX compiler ABI info
| -- Detecting CXX compiler ABI info - done
| CMake Error at CMakeLists.txt:5 (FIND_PACKAGE):
| By not providing "FindOpenCV.cmake" in CMAKE_MODULE_PATH this project has
| asked CMake to find a package configuration file provided by "OpenCV", but
| CMake did not find one.
|
| Could not find a package configuration file provided by "OpenCV" with any
| of the following names:
|
| OpenCVConfig.cmake
| opencv-config.cmake
|
| Add the installation prefix of "OpenCV" to CMAKE_PREFIX_PATH or set
| "OpenCV_DIR" to a directory containing one of the above files. If "OpenCV"
| provides a separate development package or SDK, be sure it has been
| installed.
|
|
| -- Configuring incomplete, errors occurred!
| See also "/home/ubuntu/oe-core/build/out-eglibc/work/armv7at2hf-vfp-neon-angstrom-linux-gnueabi/hello/1.0-r0/build/CMakeFiles/CMakeOutput.log".
| WARNING: exit code 1 from a shell command.
| ERROR: Function failed: do_configure (log file is located at /home/ubuntu/oe-core/build/out-eglibc/work/armv7at2hf-vfp-neon-angstrom-linux-gnueabi/hello/1.0-r0/temp/log.do_configure.5288)
ERROR: Task 6 (/home/ubuntu/oe-core/build/Yocto/Recipies/hello.bb, do_configure) failed with exit code '1'
NOTE: Tasks Summary: Attempted 540 tasks of which 539 didn't need to be rerun and 1 failed.
NOTE: Writing buildhistory
No currently running tasks (537 of 549)
回答1:
Try changing "depends" to "DEPENDS" - case matters.
回答2:
One of the quickest way to install OpenCV in your yocto build
git clone git://git.openembedded.org/bitbake/
git clone git://git.openembedded.org/openembedded-core
git clone git://git.openembedded.org/meta-openembedded
Link the bitbake to the openembedded-core and configure the oe-core.
ln -s <Path>/bitbake <Path>/openembedded-core/bitbake
source openembedded-core/oe-init-build-env
Now, edit your bblayers.conf file
BBLAYERS ?= "\ ~Path/openembedded-core/meta \
~Path/meta-openembedded/meta-oe \"
Now, in the openembedded-core/meta/recipes-core/images/core-image-minimal.bb,
IMAGE_INSTALL += "opencv libavcodec-dev libavformat-dev libswscale-dev"
PACKAGECONFIG_pn-opencv="eigen jpeg libav png tiff"
Save and close the file.
Also, add the following line to your local.conf since opencv dependencies are provided by ffmpeg recipe which is commercial.
LICENSE_FLAGS_WHITELIST += "commercial"
Now, you can execute the following command which will bake modified recipe for OpenCV:
bitbake core-image-minimal
来源：https://stackoverflow.com/questions/27434654/bitbake-recipe-that-includes-opencv