Host Environment

• OS: Microsoft Windows [Version 10.0.19041.388]
• Compiler:
  • Visual Studio 2017 Version: 15.9.25 VS Tools Version: 14.16.27023
  • Visual Studio 2019 Version: 16.6.5 VS Tools Version: 14.26.28801

To Reproduce
Steps to reproduce the behavior:
After latest update to vcpkg #11550 Commit 458c20e

set VCPKG_DEFAULT_TRIPLET=x64-windows

1. ./vcpkg upgrade --no-dry-run

2. ./vcpkg install bzip2

Failure logs

• Cut and past the appropriate build messages from the console output.

1. vcpkg upgrade console log
   The following packages will be rebuilt:
* bzip2[core]:x64-windows
Additional packages (*) will be modified to complete this operation.
Starting package 1/2: bzip2:x64-windows
Removing package bzip2:x64-windows...
Removing package bzip2:x64-windows... done
Elapsed time for package bzip2:x64-windows: 6.266 ms
-- Using cached D:/Git/vcpkg.downloads/bzip2-1.0.6.tar.gz
-- Cleaning sources at D:/Git/vs2019.test/buildtrees/bzip2/src/1.0.6-8838f21f8e.clean. Use --editable to skip cleaning for the packages you specify.
-- Extracting source D:/Git/vcpkg.downloads/bzip2-1.0.6.tar.gz
-- Applying patch fix-import-export-macros.patch
-- Applying patch fix-windows-include.patch
-- Using source at D:/Git/vs2019.test/buildtrees/bzip2/src/1.0.6-8838f21f8e.clean
-- Configuring x64-windows
-- Building x64-windows-dbg
-- Building x64-windows-rel
-- Fixing pkgconfig
CMake Error at scripts/cmake/vcpkg_fixup_pkgconfig.cmake:279 (find_program):
Could not find PKGCONFIG using the following names: pkg-config
Call Stack (most recent call first):
ports/bzip2/portfile.cmake:51 (vcpkg_fixup_pkgconfig)
scripts/ports.cmake:79 (include)

Error: Building package bzip2:x64-windows failed with: BUILD_FAILED
Elapsed time for package bzip2:x64-windows: 2.98 s

Total elapsed time: 4.544 s

RESULTS
bzip2:x64-windows: vcpkg::Commands::Build::BuildResult_NULLVALUE: 6.266 ms
bzip2:x64-windows: BUILD_FAILED: 2.98 s

SUMMARY
vcpkg::Commands::Build::BuildResult_NULLVALUE: 1
SUCCEEDED: 0
BUILD_FAILED: 1
POST_BUILD_CHECKS_FAILED: 0
FILE_CONFLICTS: 0
CASCADED_DUE_TO_MISSING_DEPENDENCIES: 0
EXCLUDED: 0

2. vcpkg instal bzip2:x64-windows
   Computing installation plan...
The following packages will be built and installed:
bzip2[core]:x64-windows
Detecting compiler hash for triplet x64-windows...
Starting package 1/1: bzip2:x64-windows
Building package bzip2[core]:x64-windows...
-- Using cached D:/Git/vcpkg.downloads/bzip2-1.0.6.tar.gz
-- Extracting source D:/Git/vcpkg.downloads/bzip2-1.0.6.tar.gz
-- Applying patch fix-import-export-macros.patch
-- Applying patch fix-windows-include.patch
-- Using source at D:/Git/vs2017.test/buildtrees/bzip2/src/1.0.6-8838f21f8e.clean
-- Configuring x64-windows
-- Building x64-windows-dbg
-- Building x64-windows-rel
-- Fixing pkgconfig
CMake Error at scripts/cmake/vcpkg_fixup_pkgconfig.cmake:279 (find_program):
Could not find PKGCONFIG using the following names: pkg-config
Call Stack (most recent call first):
ports/bzip2/portfile.cmake:51 (vcpkg_fixup_pkgconfig)
scripts/ports.cmake:79 (include)

Error: Building package bzip2:x64-windows failed with: BUILD_FAILED
Please ensure you're using the latest portfiles with .\vcpkg update, then
submit an issue at https://github.com/Microsoft/vcpkg/issues including:
Package: bzip2:x64-windows
Vcpkg version: 2020.06.15-nohash

Additionally, attach any relevant sections from the log files above.

• Please attach any additional failure logs mentioned in the console output.
  No failure in logs, appears to compile/link properly, just fails to install due to error listed.

Additional context