[libffi:x64-windows] build failure

[homedry]

Host Environment

• OS: Windows 10
• Compiler: revision

To Reproduce
Steps to reproduce the behavior:
Run 'vcpkg install libffi:x64-windows'

Failure logs
Computing installation plan...
The following packages will be built and installed:
libffi[core]:x64-windows
Detecting compiler hash for triplet x64-windows...
Starting package 1/1: libffi:x64-windows
Building package libffi[core]:x64-windows...
Could not locate cached archive: C:\Users\homedry\AppData\Local\vcpkg\archives\f1\f198d59d4c6889d9c1f38d8202911295ee0e140f.zip
-- Using cached C:/vcpkg/downloads/libffi-libffi-v3.3.tar.gz
-- Cleaning sources at C:/vcpkg/buildtrees/libffi/src/v3.3-8557367958.clean. Use --editable to skip cleaning for the packages you specify.
-- Extracting source C:/vcpkg/downloads/libffi-libffi-v3.3.tar.gz
-- Applying patch win64-disable-stackframe-check.patch
-- Applying patch win32-disable-stackframe-check.patch
-- Using source at C:/vcpkg/buildtrees/libffi/src/v3.3-8557367958.clean
-- Configuring x64-windows
-- Building x64-windows-dbg
-- Building x64-windows-rel
-- Fixing pkgconfig
-- Acquiring MSYS Packages...
CMake Error at scripts/cmake/vcpkg_execute_required_process.cmake:72 (message):
Command failed: C:/vcpkg/downloads/tools/msys2/msys64/usr/bin/bash.exe --noprofile --norc -c "pacman -S --noconfirm --needed pkg-config"
Working Directory: C:/vcpkg/downloads/tools/msys2
Error code: 1
See logs for more information:
C:\vcpkg\buildtrees\libffi\msys-pacman-x64-windows-err.log

Call Stack (most recent call first):
scripts/cmake/vcpkg_acquire_msys.cmake:153 (vcpkg_execute_required_process)
scripts/cmake/vcpkg_fixup_pkgconfig.cmake:281 (vcpkg_acquire_msys)
ports/libffi/portfile.cmake:50 (vcpkg_fixup_pkgconfig)
scripts/ports.cmake:79 (include)

Error: Building package libffi:x64-windows failed with: BUILD_FAILED
Please ensure you're using the latest portfiles with .\vcpkg update, then
submit an issue at https:/Microsoft/vcpkg/issues including:
Package: libffi:x64-windows
Vcpkg version: 2020.06.15-nohash

Additionally, attach any relevant sections from the log files above.
Additional context
I got to know this issue when I tried to install wt first.

[StarGate-One]

Looks like pkg-config.exe is missing in your msys2 installation.
Try deleting or renaming the [vcpkg-root]\downloads\tools\msys2 directory/folder and try again

[PhoebeHui]

@homedry, could you try the step that StarGate-One provided?

[PhoebeHui]

This issue has been fixed, if you try above steps, it should pass.