In an ideal world these instructions will eventually become out of date as the Homebrew formula used to configure and install OpenCV is updated to correct these errors. Today I’m going to share our findings in hopes that it helps you and other PyImageSearch readers install OpenCV via Homebrew on your macOS machines. Myself, as well as PyImageSearch readers Andreas Linnarsson, Francis, and Patrick (see the comments section of the Homebrew OpenCV install post for the gory details) dove into the problem and tackled it head on. Error #2: A missing downloader.cmake file.Error #1: A report that both Python 2 and Python 3 wrappers could not be built (this is not true, you can build both Python 2.7 and Python 3 bindings in the same Homebrew command).This formula caused two types of errors when building OpenCV on macOS via Homebrew:
However, a bit of a problem arose a few weeks ago when it was discovered that there were some errors in the most recent Homebrew formula used to build and install OpenCV on macOS.
BREW INSTALL OPENCV@2 SOFTWARE
Instead, you simply use what are called brew formulas which define how a given package should be automatically configured and installed, similar to how a package manager can intelligently install libraries and software on your system. Using Homebrew allows you to skip manually configuring your build and compiling OpenCV from source. To help you and other PyImageSearch readers get OpenCV installed faster (and with less headaches), I put together a tutorial on using Homebrew to install OpenCV. Click here to download the source code to this postĪs you undoubtedly know, configuring and installing OpenCV on your macOS machine can be a bit of a pain.
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