Error:Could NOT find PkgConfig (missing: PKG_CONFIG_EXECUTABLE)

cmake point-cloud-library pkg-config
user30985 picture user30985 · Oct 28, 2015 · Viewed 7.4k times · Source

I am using Point cloud library 1.5.1. When I run CMake 3.4.0-rc2 to build my project, it has error: 

Could NOT find PkgConfig (missing: PKG_CONFIG_EXECUTABLE)

How do I fix this error?

Answer

squareskittles picture squareskittles · Nov 8, 2019

This error is raised because the pkg-config utility is not available on your system.

Using PkgConfig with CMake is not a truly cross-platform solution, as Windows does not come with the pkg-config utility installed. (The PCL developers should instead use find_package() in their CMake. Perhaps, this is worth opening up a bug report on their Github.) On Linux, this is an easy fix; you can install pkg-config like this:

sudo apt-get install pkg-config

However, on Windows, the process is more involved. There are several solutions for installing pkg-config on Windows documented here. I'm not sure which most directly applies to your situation, so I suggest reading through some of those. After successfully installing the pkg-config utility on your Windows machine, clear your CMake cache, and re-run CMake. This should remove the error, and allow your build to proceed.

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