Update_restore.sh issue

Run update_restore.sh and it shows:
checking for crypto++ version >= 5.1… no
Crypto++ not found. Please install (cryptopp-devel/libcrypto+±dev) or run configure with --enable-embedded-cryptopp.

However Crypto++ (libcrypto+±dev) was already installed. Do I miss anything?

Here is the script which finds crypto++. It might be broken with your distribution/setup. Patches are welcome.

Yes. It seems that crypto++ is really a trouble maker. I will look into it. Thanks!