Add Debian build dependency checking to build.sh

- Added dependency verification for Debian package building
- Checks for required packages: debhelper, gcc, make, pkg-config, libssl-dev
- Provides clear error messages with installation commands
- Prevents failed builds due to missing dependencies
- Only runs checks when --debian flag is used

build.sh

@@ -96,7 +96,26 @@ fi
 
 # Build Debian package if requested
 if [ "$BUILD_DEBIAN" = true ]; then
+    echo "Checking Debian build dependencies..."
+
+    # Check for required Debian build tools
+    missing_deps=""
+    for dep in debhelper gcc make pkg-config libssl-dev; do
+        if ! dpkg -l | grep -q "^ii  $dep"; then
+            missing_deps="$missing_deps $dep"
+        fi
+    done
+
+    if [ -n "$missing_deps" ]; then
+        echo "Error: Missing Debian build dependencies:$missing_deps"
+        echo "Please install them with: sudo apt-get install$missing_deps"
+        echo "Or run: sudo apt-get install debhelper gcc make pkg-config libssl-dev"
+        exit 1
+    fi
+
+    echo "All Debian build dependencies found."
     echo "Building Debian package..."
+
     if [ -d "wssshtools" ] && [ -d "wssshtools/debian" ]; then
         cd wssshtools
         dpkg-buildpackage -us -uc