Host Environment

• OS: [Windows]
• Compiler: revision

To Reproduce
Steps to reproduce the behavior:
./vcpkg install osgearth:x64-windows-static-md

Failure logs
.\vcpkg.exe install osgearth:x64-windows-static-md
Computing installation plan...
The following packages will be built and installed:

• fontconfig[core]:x64-windows-static-md -> 2.13.1#2

• osg[core,plugins]:x64-windows-static-md -> 3.6.5#5
  osgearth[core]:x64-windows-static-md -> 3.1

• pthread[core]:x64-windows-static-md -> 3.0.0

• pthreads[core]:x64-windows-static-md -> 3.0.0-6
  Additional packages (*) will be modified to complete this operation.
  Detecting compiler hash for triplet x64-windows-static-md...
  Could not locate cached archive: C:\Users\ankurv\AppData\Local\vcpkg\archives\5e\5e72bae870a19423ee029c1c71c7da3159450547.zip
  Could not locate cached archive: C:\Users\ankurv\AppData\Local\vcpkg\archives\b8\b84b695828646368a405abd7808813edaa08a15b.zip
  Could not locate cached archive: C:\Users\ankurv\AppData\Local\vcpkg\archives\e9\e9eda6d7250d3fe4bf9b444bd770b02edcca9168.zip
  Could not locate cached archive: C:\Users\ankurv\AppData\Local\vcpkg\archives\5a\5a1000d20ce077d807a727a1b1f20b58bbb9ac50.zip
  Could not locate cached archive: C:\Users\ankurv\AppData\Local\vcpkg\archives\40\4029aa7651fc672136dae4b8e826e816bde11d73.zip
  Starting package 1/5: pthreads:x64-windows-static-md
  Building package pthreads[core]:x64-windows-static-md...
  -- Using community triplet x64-windows-static-md. This triplet configuration is not guaranteed to succeed.
  -- [COMMUNITY] Loading triplet configuration from: G:\vcpkg.2020.12.25\triplets\community\x64-windows-static-md.cmake
  -- Trying auto-select mirror...
  -- Using cached G:/vcpkg.2020.12.25/downloads/pthreads4w-code-v3.0.0.zip
  -- Skipping hash check for G:/vcpkg.2020.12.25/downloads/pthreads4w-code-v3.0.0.zip.
  -- The default mirror is in Disaster Recovery mode, trying other mirrors...
  -- Trying mirror cfhcable...
  -- Using cached G:/vcpkg.2020.12.25/downloads/pthreads4w-code-v3.0.0.zip
  -- Skipping hash check for G:/vcpkg.2020.12.25/downloads/pthreads4w-code-v3.0.0.zip.
  -- Cleaning sources at G:/vcpkg.2020.12.25/buildtrees/pthreads/src/49e541b66c-bb03a1deb3.clean. Use --editable to skip cleaning for the packages you specify.
  -- Extracting source G:/vcpkg.2020.12.25/downloads/pthreads4w-code-v3.0.0.zip
  -- Using source at G:/vcpkg.2020.12.25/buildtrees/pthreads/src/49e541b66c-bb03a1deb3.clean
  -- Building x64-windows-static-md-rel
  -- Building x64-windows-static-md-rel done
  -- Building x64-windows-static-md-dbg
  -- Building x64-windows-static-md-dbg done
  -- Installing: G:/vcpkg.2020.12.25/packages/pthreads_x64-windows-static-md/share/pthreads/copyright
  -- Performing post-build validation
  Expected Debug,Dynamic crt linkage, but the following libs had invalid crt linkage:

  G:/vcpkg.2020.12.25/packages/pthreads_x64-windows-static-md/debug/lib/pthreadVC3d.lib: Debug,Static
  G:/vcpkg.2020.12.25/packages/pthreads_x64-windows-static-md/debug/lib/pthreadVCE3d.lib: Debug,Static
  G:/vcpkg.2020.12.25/packages/pthreads_x64-windows-static-md/debug/lib/pthreadVSE3d.lib: Debug,Static

To inspect the lib files, use:
dumpbin.exe /directives mylibfile.lib
Expected Release,Dynamic crt linkage, but the following libs had invalid crt linkage:

G:/vcpkg.2020.12.25/packages/pthreads_x64-windows-static-md/lib/pthreadVC3.lib: Release,Static
G:/vcpkg.2020.12.25/packages/pthreads_x64-windows-static-md/lib/pthreadVCE3.lib: Release,Static
G:/vcpkg.2020.12.25/packages/pthreads_x64-windows-static-md/lib/pthreadVSE3.lib: Release,Static

To inspect the lib files, use:
dumpbin.exe /directives mylibfile.lib
Found 2 error(s). Please correct the portfile:
G:\vcpkg.2020.12.25\ports\pthreads\portfile.cmake
-- Performing post-build validation done
Error: Building package pthreads:x64-windows-static-md failed with: POST_BUILD_CHECKS_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: pthreads:x64-windows-static-md
Vcpkg version: 2020.11.12-nohash

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

Additional context

The error seems to be because of pthreads.
Even removing pthreads as a dependency from fontconfig (which is a dependency for osg) does not solve the issue