Fails during configure phase due the changes in Libgpg-error 1.46 deprecating gpg-error-config in favour of gpgrt-config (similar issue as seen with other GnuPG libraries prior to updates catering for Libgpg-error 1.46):
checking for gpg-error-config... /usr/i686-w64-mingw32/bin/gpg-error-config checking for GPG Error - version >= 1.25... no configure: error: libgpg-error is needed. See ftp://ftp.gnupg.org/gcrypt/libgpg-error/ .
It seems that changes such as https://dev.gnupg.org/rA8ec3e9f1dd88e14f42f31e8692a8664bd894226b for libassuan have not yet been applied to the Libgcrypt LTS branch?