Install won't work

[cn0047]

I try to run steps from Install Linux & Mac OS X:

go get github.com/go-opencv/go-opencv
cd $GOPATH/src/github.com/go-opencv/go-opencv/samples
go run hellocv.go

And I have this error:

go run hellocv.go
# pkg-config --cflags  -- opencv
Package opencv was not found in the pkg-config search path.
Perhaps you should add the directory containing `opencv.pc'
to the PKG_CONFIG_PATH environment variable
No package 'opencv' found
pkg-config: exit status 1

cat /etc/os-release

NAME="Ubuntu"
VERSION="18.04.2 LTS (Bionic Beaver)"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu 18.04.2 LTS"
VERSION_ID="18.04"
HOME_URL="https://www.ubuntu.com/"
SUPPORT_URL="https://help.ubuntu.com/"
BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"
PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"
VERSION_CODENAME=bionic
UBUNTU_CODENAME=bionic

Moreover I've already installed all from this link:

# [compiler]
apt-get install build-essential
# [required]
apt-get install cmake git libgtk2.0-dev pkg-config libavcodec-dev libavformat-dev libswscale-dev
# [optional]
apt-get install python-dev python-numpy libtbb2 libtbb-dev libjpeg-dev libpng-dev libtiff-dev libjasper-dev libdc1394-22-dev

[jordi00113]

Same issue here, didn't find a solution for this

[maxsxu]

It seems there is no opencv lib in your computer from the pkg-config error.

Try brew install opencv in macOS