compile 2.1.10 with libgcrypt 1.7.0-beta300

[Fulano Diego Perez]

Can anybody confirm on debian stretch 64 a successful build with
libgcrypt beta ?

checking for LIBGCRYPT - version >= 1.6.0... yes (1.7.0-beta300)
checking LIBGCRYPT API version... okay

i cannot create curve25519 encryption sub keys

gpg: agent_genkey failed: Invalid flag
gpg: Key generation failed: Invalid flag

but i could create NIST and Brainpool enc sub keys

something's not right...

still using 1.6.4 according to --version

any ideas how i could further troubleshoot ?



FYI for debian stretch - libgcrypt beta needed manual install of
transfig package that includes fig2dev