document build requirements

[bertsky]

Please specify the build requirements in the README.

Most obvious (to me at least), you need maven. But then it seems you also need some special JDK to run mvn install:

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.6.1:compile (default-compile) on project tabbypdf: Fatal error compiling: java.lang.ExceptionInInitializerError: com.sun.tools.javac.code.TypeTags -> [Help 1]

Running with -e I see:

java.lang.ClassNotFoundException: com.sun.tools.javac.code.TypeTags

My default javac is from OpenJDK 11. What do I need to build tabbypdf?

[afaq-ahmad]

so check out your jdk version. I am using jdk version 14.0.1 it required lombok 1.18.4 or 1.18.12. So you need to change the lombok version in the pom.xml file.

Earlier:

<dependency>
  <groupId>org.projectlombok</groupId>
  <artifactId>lombok</artifactId>
  <version>1.16.20</version>
</dependency>

After:

<dependency>
  <groupId>org.projectlombok</groupId>
  <artifactId>lombok</artifactId>
  <version>1.18.4</version>
</dependency>

[afaq-ahmad]

My version details are below:
Apache Maven 3.6.3 (cecedd343002696d0abb50b32b541b8a6ba2883f)
Maven home: C:\Users\afaq.ahmad\Documents\extra\TabbyPDF\apache-maven-3.6.3\bin..
Java version: 14.0.1, vendor: Oracle Corporation, runtime: C:\Program Files\Java\jdk-14.0.1
Default locale: en_US, platform encoding: Cp1252
OS name: "windows 10", version: "10.0", arch: "amd64", family: "windows"

[Kumar-Tarun]

@afaq-ahmad Thanks for this. It works perfectly!