Lazarus JVM: what changed
Revision 0 to 1. Removed lines have a minus sign; added lines have a plus sign.
Title: Lazarus JVM
| Old | New | Line | |
|---|---|---|---|
| 1 | + | With the recent publishing of [[FPC JVM|FPC JVM branch]] it's now possible to build java applications. | |
| 2 | + | ||
| 3 | + | Lazarus doesn't provide any special features to support the JVM target, however you can already configure IDE to start development. | |
| 4 | + | ||
| 5 | + | 1\) Change the compiler path in Options to the JVM compiler, (i.e. in Windows, assuming the snapshot was unpacked to c:\fpcjvm directory) | |
| 6 | + | ||
| 7 | + | `C:\fpcjvm\bin\ppcjvm.exe` | |
| 8 | + | ||
| 9 | + | 2\) You should use only use **-g** and **-O2** in the project's compiler options; | |
| 10 | + | ||
| 11 | + | This should be enough for you to compile the project in Lazarus. | |
| 12 | + | ||
| 13 | + | To run the application from the IDE you need to do the following: | |
| 14 | + | ||
| 15 | + | 3\) The compiled file is .class file, so it cannot be run as a normal executable. You'll need to configure the "Host Application" at Run-\>Run parameters menu. | |
| 16 | + | ||
| 17 | + | - for the host application you need to specify *java* application installed in the system with Java Runtime | |
| 18 | + | - for the parameters you'll need to specify -cp (class path) parameter (refer) and the built file name (without .class extension). -cp parameter must include the full path of the JVM RTL library, and the path to the compiled project files; | |
| 19 | + | ||
| 20 | + | Example to run the example *trange1* test application. | |
| 21 | + | ||
| 22 | + | <figure> | |
| 23 | + | <img src="Jvmconfigexample.PNG" title="Jvmconfigexample.PNG" /> | |
| 24 | + | <figcaption>Jvmconfigexample.PNG</figcaption> | |
| 25 | + | </figure> | |
| 26 | + | ||
| 27 | + | For more details of configuration *java* you can refer to [[FPC JVM/Usage|FPC JVM Usage page]] | |
| 28 | + | ||
| 29 | + | There's no Java debugger support in Lazarus at the moment. | |
| 30 | + | ||
| 31 | + | --- | |
| 32 | + | *From the Free Pascal wiki, page "Lazarus JVM", as it stood on 2013-09-22 after a change by Jwdietrich, out of the wiki's dump of 2024-05-26. Copyright stays with the author who wrote it, according to the old wiki's [[Licensing]] page. If you have concerns about this material, [message the admin](/wiki-contact).* | |
| 33 | + | Category: JVM | |
| 34 | + | Category: Lazarus |