From cc217841cbca8d2d34dbf195ce69308c3b5475ea Mon Sep 17 00:00:00 2001
From: Volker Berlin <volker.berlin@googlemail.com>
Date: Tue, 2 Nov 2021 19:14:25 +0100
Subject: [PATCH] Add helpful hint to error message.

---
 src/de/inetsoftware/jwebassembly/module/ModuleGenerator.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/de/inetsoftware/jwebassembly/module/ModuleGenerator.java b/src/de/inetsoftware/jwebassembly/module/ModuleGenerator.java
index bf863e3..292c3fb 100644
--- a/src/de/inetsoftware/jwebassembly/module/ModuleGenerator.java
+++ b/src/de/inetsoftware/jwebassembly/module/ModuleGenerator.java
@@ -570,7 +570,7 @@ public class ModuleGenerator {
                     strings.getStringConstantFunction();
                     return null;
                 }
-                throw new WasmException( "Abstract or native method can not be used: " + name.signatureName, -1 );
+                throw new WasmException( "Abstract or native method can not be used: " + name.signatureName +"\nIf you want to use classes with native code, you must use a library that implements these native methods, such as 'de.inetsoftware:jwebassembly-api:+'.", -1 );
             }
         } catch( Exception ioex ) {
             int lineNumber = code == null ? -1 : code.getFirstLineNr();