When doing:
sudo gem install charlock_holmes
I get the following error:
Failed to build gem native extension
I have tried:
sudo apt-get install libicu-dev
as suggested by various internet sources.
However, this gives me the following error:
E: Unable to locate package libicu-dev
A quick look in synaptic shows I have libicu48.
The documentation suggest to use the following:
bundle config build.charlock_holmes --with-icu-dir=/path/to/installed/icu4c
Or:
gem install charlock_holmes -- --with-icu-dir=/path/to/installed/icu4c
However, I'm not sure where /path/to/installed/icu4c
is.