Tests for GraalVM/FreePascal UTF-8 string passing

A test for passing UTF-8 strings from Object Pascal/FreePascal to GraalVM and back

Prerequisites

• A GraalVM installation. Last used: GraalVM 22.3.3 Java 17 CE
  • Download the ZIP, unzip it to C:\Program Files\Java\graalvm-ce-java17-22.3.3
  • Starter cmd script C:\Program Files\Java\graalvm-ce-java17-22.3.3\graal-cmd-17.cmd:

  set JAVA_HOME=C:\Program Files\Java\graalvm-ce-java17-22.3.3
  :: [...]
  set PATH=%JAVA_HOME%\bin;%PATH%

  • Install native-image as documented

  gu install native-image

• Visual Studio Build Tools (Last used: 2017)
• Lazarus IDE 64-bit (Last used: 2.2.6)

Building the DLL

1. Start the x64 Native Tools Command Prompt for VS 2017 from the start menu.
2. In that command prompt start C:\Program Files\Java\graalvm-ce-java17-22.3.3\graal-cmd-17.cmd

3. javac Main.java

4. chcp 65001
   native-image -H:Name=libtestutf8 -J-Dfile.encoding=UTF-8 --shared

   Note: To see some encoding problems remove the -J-D... parameter and or compile with chcp 1252

Building the FreePascal test program

Open the Project graalutf8.lpi in Lazarus IDE and hit run. To use the resulting graalutf8.exe as a pure console program add at -ci parameter.