Date: Fri, 21 Jul 2023 12:14:44 +0000 From: Marcin Cieslak <saper@saper.info> To: java@freebsd.org Subject: runtime JAVA_VERSION vs. Java build target Message-ID: <3nq41q78-5qo8-1469-1s11-087so5p535q3@fncre.vasb> Resent-Message-ID: <p26n69nn-6219-oo5r-1qo9-sono25763970@fncre.vasb>
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--2201072851-43873148-1689941684=:935 Content-Type: text/plain; format=flowed; charset=US-ASCII I've run into this recently: when I build a Java port, generated JAR will be built with a compiler set by JAVA_VERSION which is our runtime setting. For example, when building with OpenJDK 11, and later running something with env JAVA_VERSION=8 ... I will get class file version errors. Since textproc/xincluder is a small and obsolete piece of software, I have decided to tell javac to target Java 8 in all cases[1]. Shall this be a general practice? If someone decides to set JAVA_VERSION high and rebuild Java dependencies from source (those which can be rebuilt) - JAVA_VERSION cannot be really used to switch at runtime. On the other hand, one might the code to be optimized better. What is the best practice here? Shall we keep JAR libraries that can be used as dependencies compatible with the oldest Java runtime we have? Marcin [1] https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=272559 --2201072851-43873148-1689941684=:935 Content-Type: application/pkcs7-signature; name=smime.p7s Content-Transfer-Encoding: BASE64 Content-Description: S/MIME Cryptographic Signature Content-Disposition: attachment; filename=smime.p7s MIIOdgYJKoZIhvcNAQcCoIIOZzCCDmMCAQExDzANBglghkgBZQMEAgEFADAL BgkqhkiG9w0BBwGgggq9MIIEvDCCA6SgAwIBAgIQeEqpEhjRpCYIUTzTZlVD ozANBgkqhkiG9w0BAQsFADBMMSAwHgYDVQQLExdHbG9iYWxTaWduIFJvb3Qg Q0EgLSBSMzETMBEGA1UEChMKR2xvYmFsU2lnbjETMBEGA1UEAxMKR2xvYmFs U2lnbjAeFw0yMDA5MTYwMDAwMDBaFw0yOTAzMTgwMDAwMDBaMFsxCzAJBgNV BAYTAkJFMRkwFwYDVQQKExBHbG9iYWxTaWduIG52LXNhMTEwLwYDVQQDEyhH bG9iYWxTaWduIEdDQyBSMyBQZXJzb25hbFNpZ24gMSBDQSAyMDIwMIIBIjAN BgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAvxvJBqEapaux2/z3J7fFslRO WjKVJ5rCMfWGsg17dmD7NSnG7Spoa8d3htXsls1IMxoO8PyouQajNQqYmlYo xinlqenMNv7CJyEKMOAtglBmD6C/QC7kT+dSx4HfSTs8xmv8veJOldMzF8S/ BEn/tD4w/Dvpg+oXOqDyOiHPTacRFK0QHoq5eEbBmVS8W0rwcaRotO9fGTA+ 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