run pkg_config fail: Could not run `PKG_CONFIG_ALLOW_SYSTEM_CFLAGS="1" "pkg-config" "--libs" "--cflags" "openssl"`
The pkg-config command could not be found.
Most likely, you need to install a pkg-config package for your OS.
Try `apt install pkg-config`, or `yum install pkg-config`,
or `pkg install pkg-config`, or `apk add pkgconfig` depending on your distribution.
If you've already installed it, ensure the pkg-config command is one of the
directories in the PATH environment variable.
If you did not expect this build to link to a pre-installed system library,
then check documentation of the openssl-sys crate for an option to
build the library from source, or disable features or dependencies
that require pkg-config.
Motivation
Build fails with error:
Solution
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