[ffmpeg[openssl]] build failure on Windows

[traumedy]

Host Environment

• OS: Windows 10
• Compiler: Visual Studio 2017 Enterprise

To Reproduce
Steps to reproduce the behavior:
vcpkg install ffmpeg[openssl]:x64-windows

Failure logs

-- Building ffmpeg for Release
CMake Error at scripts/cmake/vcpkg_execute_required_process.cmake:72 (message):
    Command failed: D:/vcpkg/downloads/tools/msys2/msys64/usr/bin/bash.exe --noprofile --norc D:/vcpkg/ports/ffmpeg\build.sh D:/vcpkg/buildtrees/ffmpeg/x64-windows-rel D:/vcpkg/buildtrees/ffmpeg/src/n4.2-02d8c63f80 D:/vcpkg/packages/ffmpeg_x64-windows "--enable-asm --enable-yasm --disable-doc --enable-debug --enable-runtime-cpudetect --enable-nonfree --enable-openssl --disable-ffmpeg --disable-ffplay --disable-ffprobe --disable-libvpx --disable-libx264 --disable-opencl --disable-lzma --disable-bzlib --enable-avresample  --disable-static --enable-shared --extra-cflags=-DHAVE_UNISTD_H=0  --extra-cflags=-MD --extra-cxxflags=-MD"
    Working Directory: D:/vcpkg/buildtrees/ffmpeg/x64-windows-rel
    Error code: 1
    See logs for more information:
      D:\vcpkg\buildtrees\ffmpeg\build-x64-windows-rel-out.log
...
D:\vcpkg>type D:\vcpkg\buildtrees\ffmpeg\build-x64-windows-rel-out.log
=== CONFIGURING ===
ERROR: openssl not found
...

Additional context
This started failing in the last day or two. All other ffmpeg features still build fine with x64-windows.

[Neumann-A]

ffmpeg checks for SSL_library_init in configure and this has been deprecated in 1.1.0. Maybe someone should tell them to update their configure script....
you can use this patch to make it work (just drop the .txt extension and drop it into the ffmpeg port folder)
0002-detect-openssl.patch.txt

[pierrextardif]

Patches from @Neumann-A still needed when using FFmpeg 5.0.
This ias a special case as I'm doing manual compilation with msys2, rather than vcpkg ffmpeg.
Thanks anyways v useful.