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raspberry-piraspberry-pi3raspbian

No targets specified and no makefile found - Raspberry Pi

I did the following on my Raspberry Pi:

cd ~
wget -O opencv.zip https://github.com/Itseez/opencv/archive/3.1.0.zip
wget -O opencv_contrib.zip https://github.com/Itseez/opencv_contrib/archive/3.1.0.zip
cd ~/opencv-3.1.0/
mkdir build
cd build
cmake -D CMAKE_BUILD_TYPE=RELEASE -D CMAKE_INSTALL_PREFIX=/usr/local -D INSTALL_PYTHON_EXAMPLES=ON -D OPENCV_EXTRA_MODULES_PATH=~/opencv/contrib-3.1.0/modules -D BUILD_EXAMPLES=ON ..
make -j4

The make -j4 returns make: *** No targets specified and no makefile found. Stop.

I checked that make is installed on my device with make --version and found I have version 4.0. I also tried running the likes of /usr/bin/make -j4 but continue to get the same error.

From what I've found online I think I should expect a makefile or Makefile to be in my directory but none exists.

What am I doing wrong and how do I resolve this?

Additional Information

I keep seeing references to a ./configuration file but I don't have this file.

Solution

  • I'm not sure what went wrong when I worked through the steps outlined in my question. I didn't see any errors.

    However, I deleted the build folder and ran through the following again:

    mkdir build
cd build
cmake -D CMAKE_BUILD_TYPE=RELEASE -D CMAKE_INSTALL_PREFIX=/usr/local -D INSTALL_PYTHON_EXAMPLES=ON -D OPENCV_EXTRA_MODULES_PATH=~/opencv/contrib-3.1.0/modules -D BUILD_EXAMPLES=ON ..
make -j4

    This time I noticed a lot more files, including Makefile. Now when I run make -j4 it runs without error.