I am trying to install frrouting on a docker container (ubuntu-based) and I am still fighting againt dependency hell.

I have already installed :

readline autoconf libtool libjson-c-dev tar build-essential libxml2 libxml-libxml-perl dialog pkg-config libglib2.0-dev

But I am stuck with "libcares", which I cannot find as a package:

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configure: error: Package requirements (libcares) were not met:

No package 'libcares' found

Consider adjusting the PKG_CONFIG_PATH environment variable if you

installed software in a non-standard prefix.

Alternatively, you may set the environment variables CARES_CFLAGS

and CARES_LIBS to avoid the need to call pkg-config.

See the pkg-config man page for more details.

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Any hint?