Why is libgpgmepp.dll.a not available under MSVC? Installing script under "libs/_msvc/gpgme/gpgme.py" adds following line: self.addCachedAutotoolsBuild("libs/_autotools/gpgme") and during autotools build libgpgmepp.dll.a is produced. If it's not a simple error then why not use patches from LibreOffice https://gerrit.libreoffice.org/gitweb?p=core.git;a=tree;f=external/gpgmepp;h=b09c319a4d5e973f1f114f806b46d30f5351a234;hb=HEAD They report building gpgmepp under MSVC successfuly https://wiki.documentfoundation.org/Development/msvc-x86_64#gpgmepp
We currently compile all gpg libraries with mingw and offer them for msvc. This work great for C libraries but is impossible for C++ libraries, that's why we don't offer libgpgmepp for msvc. Gpgme was previously a KDE project and had a CMake build system, but it was upstreamed and since than is not buildable with msvc. The correct way to solve this issue would be to provide a upstreamable patch that provides a CMake build system for the C++ parts.