From mboxrd@z Thu Jan  1 00:00:00 1970
X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me
X-Spam-Level: 
X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,FREEMAIL_FROM
	autolearn=unavailable autolearn_force=no version=3.4.4
X-Received: by 2002:a24:70b:: with SMTP id f11mr294973itf.137.1560362555214;
        Wed, 12 Jun 2019 11:02:35 -0700 (PDT)
X-Received: by 2002:aca:75d1:: with SMTP id q200mr298122oic.113.1560362554999;
 Wed, 12 Jun 2019 11:02:34 -0700 (PDT)
Path: 
 eternal-september.org!reader01.eternal-september.org!feeder.eternal-september.org!news.gegeweb.eu!gegeweb.org!usenet-fr.net!proxad.net!feeder1-2.proxad.net!209.85.166.216.MISMATCH!g15no41771itd.0!news-out.google.com!l126ni35itl.0!nntp.google.com!g15no41766itd.0!postnews.google.com!glegroupsg2000goo.googlegroups.com!not-for-mail
Newsgroups: comp.lang.ada
Date: Wed, 12 Jun 2019 11:02:34 -0700 (PDT)
Complaints-To: groups-abuse@google.com
Injection-Info: glegroupsg2000goo.googlegroups.com;
 posting-host=2a02:c7d:3c35:b000:325a:3aff:fe0f:37a5;
 posting-account=L2-UcQkAAAAfd_BqbeNHs3XeM0jTXloS
NNTP-Posting-Host: 2a02:c7d:3c35:b000:325a:3aff:fe0f:37a5
User-Agent: G2/1.0
MIME-Version: 1.0
Message-ID: <749a3fde-4823-4c4c-8457-c4706b617e72@googlegroups.com>
Subject: Trying to use ANTLR4 from GPRBuild
From: Lucretia <laguest9000@googlemail.com>
Injection-Date: Wed, 12 Jun 2019 18:02:35 +0000
Content-Type: text/plain; charset="UTF-8"
Xref: reader01.eternal-september.org comp.lang.ada:56630
Date: 2019-06-12T11:02:34-07:00
List-Id: <comp.lang.ada>

Hi,

I've created an antlr4.xml file in a gprbuild dir:

<?xml version="1.0" ?>
<gprconfig>
    <compiler_description>
        <name>ANTLR4</name>
        <executable>java</executable>
        <version>4.7.2</version>
        <languages>ANTLR4</languages>
    </compiler_description>

    <configuration>
        <compilers>
            <compiler name="ANTLR4" language="ANTLR4" />
        </compilers>

        <config>
package Naming is
   for Body_Suffix ("ANTLR4") use ".g4";
end Naming;

package Compiler is
   for Driver ("ANTLR4") use "java";
   for Leading_Required_Switches ("ANTLR4") use ("-Xmx500M", "org.antlr.v4.Tool");
   for Dependency_Kind ("ANTLR4") use "None";
   -- Doesn't like this next switch for some reason!
   --for Objects_Linked ("ANTLR4") use "False";
end Compiler;
        </config>
    </configuration>
</gprconfig>

I've got a gpr file which includes:

   for Languages use ("C++", "Ada", "ANTLR4");

   package Compiler is
      for Default_Switches ("ANTLR4") use ("-o", Out_Dir & ".src", "-Dlanguage=Cpp");
   end Compiler;

I have a ThingLexer.g4 and a ThingParser.g4, but for some reason it's trying to build ThingParser.g4 first, when by alphabetic sorting, it should be trying to build ThingLexer.g4.

Changing to object directory of "Core": "<mysrc>/thing/build/gnat/gen/debug/core/.obj/"
/usr/bin/java -Xmx500M org.antlr.v4.Tool -o gen/debug/core.src -Dlanguage=Cpp <mysrc>/thing/lib/core/ThingParser.g4
error(114): <mysrc>/thing/lib/core/ThingParser.g4:4:17: cannot find tokens file <mysrc>/thing/lib/core/ThingLexer.tokens
...

Re the first line, where gprbuild is changing the directory, is there a way to specify the output dir for antler so I can point it at <mysrc>/thing/build/gnat/gen/debug/core/src for example?