From 8fecb82f356b0a3f65b1ffd7f02f9c433353b5d6 Mon Sep 17 00:00:00 2001
From: CHOMPStation2StaffMirrorBot
 <94713762+CHOMPStation2StaffMirrorBot@users.noreply.github.com>
Date: Thu, 27 Nov 2025 03:20:49 -0700
Subject: [PATCH] [MIRROR] test symlink support (#12035)

Co-authored-by: Kashargul <144968721+Kashargul@users.noreply.github.com>
---
 tools/bootstrap/javascript.sh   | 20 ++++++++++++++++++++
 tools/bootstrap/javascript_.ps1 | 22 ++++++++++++++++++++++
 2 files changed, 42 insertions(+)

diff --git a/tools/bootstrap/javascript.sh b/tools/bootstrap/javascript.sh
index 4ce45eeeb0..91d539638a 100755
--- a/tools/bootstrap/javascript.sh
+++ b/tools/bootstrap/javascript.sh
@@ -16,6 +16,26 @@ cd "$OldPWD"
 BunVersion="$BUN_VERSION"
 BunFullVersion="bun-v$BunVersion"
 
+# Check if symlinks are supported in this directory
+test_symlink_support() {
+    echo "Testing symlink support."
+    TMPDIR=$(mktemp -d)
+    TARGET="$TMPDIR/target.txt"
+    LINK="$TMPDIR/link.txt"
+    echo "test" > "$TARGET"
+    if ln -s "$TARGET" "$LINK" 2>/dev/null; then
+        rm -rf "$TMPDIR"
+        echo "Symlinks are supported."
+        return 0
+    else
+        rm -rf "$TMPDIR"
+        echo "File system does not support symlinks. Compilation won't be possible."
+        exit 1
+    fi
+}
+
+test_symlink_support
+
 # If Bun is not present, install using the official installer.
 if ! command -v bun >/dev/null 2>&1; then
     echo "Bun not found, installing with official installer..."
diff --git a/tools/bootstrap/javascript_.ps1 b/tools/bootstrap/javascript_.ps1
index dbf9a7a9b8..136a278f4a 100644
--- a/tools/bootstrap/javascript_.ps1
+++ b/tools/bootstrap/javascript_.ps1
@@ -151,6 +151,28 @@ $BunExe = "$BunTargetDir\bun.exe"
 $BunZip = "$BunTargetDir\bun.zip"
 $CoreInfoExe = "$Cache\coreinfo\Coreinfo.exe"
 
+function Test-SymlinkSupport {
+    Write-Output "Checking filesystem support"
+
+    $fullBaseDir = Resolve-Path $BaseDir
+
+    $driveLetter = Split-Path -Qualifier $fullBaseDir
+    $driveLetter = $driveLetter.TrimEnd(":\")
+
+    $volume = Get-Volume -DriveLetter $driveLetter
+    $fsType = $volume.FileSystem
+
+    if ($fsType -in @("FAT", "FAT32", "exFAT")) {
+        Write-Error "Compilation of code won't be possible. File system $fsType doesn't support symlinks"
+        exit 1
+    }
+
+    Write-Output "File system $fsType not in unsupported filesystems"
+}
+
+## Check symlink support
+Test-SymlinkSupport
+
 ## Just print the path and exit
 if ($Args.length -eq 1 -and $Args[0] -eq "Get-Path") {
     Write-Output "$BunTargetDir"