compiler: add retry loop and enable allowEmptyChecksums on Windows

Enables allowEmptyChecksums globally on Chocolatey and implements a
3-attempt retry loop for pkgconfiglite to prevent Windows CI failures
caused by transient network or SourceForge mirror errors.
Even though --allow-empty-checksums is passed to choco install,
newer Chocolatey versions do not propagate this CLI flag to the nested
PowerShell installer script (chocolateyInstall.ps1). The inner script
fails when downloading the binary from non-secure HTTP SourceForge
mirrors unless the allowEmptyChecksums feature is globally enabled
via choco feature beforehand.

Author: kannanjgithub

buildscripts/make_dependencies.bat

@@ -1,4 +1,20 @@
+choco feature enable -n allowEmptyChecksums
+
+set RETRY=0
+:install_pkgconfig
 choco install -y pkgconfiglite --allow-empty-checksums
+if %ERRORLEVEL% neq 0 (
+  if %RETRY% lss 3 (
+    set /a RETRY=%RETRY%+1
+    echo pkgconfiglite installation failed. Retrying %RETRY% of 3 in 5 seconds...
+    @rem Sleep for 5 seconds using the loopback ping trick (timeout command fails in non-interactive CI)
+    ping -n 6 127.0.0.1 >nul
+    goto :install_pkgconfig
+  )
+  echo Failed to install pkgconfiglite after 3 attempts.
+  exit /b 1
+)
+
 choco install -y openjdk --version=17.0
 set PATH=%PATH%;"c:\Program Files\OpenJDK\jdk-17\bin"
 set PROTOBUF_VER=35.1