Build BoringCrypto / BoringSSL DLL on Windows 10

BoringCrypto_Windows_DLL

PS ...\boringssl> mkdir build
PS ...\boringssl> cd build
PS ...\boringssl> # Create build_boringssl.ps1
PS ...\boringssl\build> powershell -executionpolicy bypass -File .\build_boringssl.ps1
...
DLL is at ...\boringssl\build\outx64\ssl\ssl.dll

build_boringssl.ps1

Set-StrictMode -Version latest
# $ErrorActionPreference = "Stop"

$invocation = (Get-Variable MyInvocation).Value
$directorypath = Split-Path $invocation.MyCommand.Path

Set-Location -Path "$directorypath"

$env:Path += ";C:\Program Files\CMake\bin"
$env:Path += ";C:\ProgramData\chocolatey\bin"
$env:Path += ";C:\Program Files\NASM"
$env:Path += ";C:\Go\bin"

$env:GOROOT = "C:\Go"

Start-Process "C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Auxiliary\Build\vcvarsall.bat" -NoNewWindow -Wait -ArgumentList "x64"

Remove-Item "outx64" -Recurse -ErrorAction Ignore
New-Item -Path "." -Name "outx64" -ItemType "directory" | Out-Null

Set-Location -Path "./outx64"

Start-Process cmake -NoNewWindow -Wait -ArgumentList "-DBUILD_SHARED_LIBS=1 -DCMAKE_BUILD_TYPE=Release -GNinja ..\.."
Start-Process ninja -NoNewWindow -Wait

Set-Location -Path "$directorypath"

fix_build.diff

diff --git a/CMakeLists.txt b/CMakeLists.txt
index c266e1267..d7c88b34a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -564,7 +564,7 @@ endif()

 # Add minimal googletest targets. The provided one has many side-effects, and
 # googletest has a very straightforward build.
-add_library(boringssl_gtest third_party/googletest/src/gtest-all.cc)
+add_library(boringssl_gtest STATIC third_party/googletest/src/gtest-all.cc)
 target_include_directories(boringssl_gtest PRIVATE third_party/googletest)

 include_directories(third_party/googletest/include)