Path too long on Windows fails to invoke AOT processing 'CreateProcess error=206, The filename or extension is too long'

[neoludo]

Hi,

I'm facing a problem while launching native tests, specifically in AOT Processing step.
Command line is too long (Yes, I'm under Windows... not my 1st choice)

Looking at CommandLineBuilder I'm quite surprise @Argfile is not used for the classpath. Is there a reason for that ?
Btw, how can I find a workaround to launch my build.

Thanks in advance for any help
Ludovic

[snicoll]

Looking at CommandLineBuilder I'm quite surprise @Argfile is not used for the classpath. Is there a reason for that ?

No. I am aware this can be an issue but we've never faced it thus far.

Btw, how can I find a workaround to launch my build.

I have no idea. Restricting the number of dependencies or changing the location of your Maven repository (if you're using that) can be a workaround.

[neoludo]

Suggestion

static String build(List<URL> classpathElements) {
	try {
		File classpathFile = File.createTempFile("classpath", ".txt");
		classpathFile.deleteOnExit();
		try (BufferedWriter writer = new BufferedWriter(new FileWriter(classpathFile))) {
			for (URL element : classpathElements) {
				writer.write(toFile(element).getAbsolutePath());
				writer.newLine();
			}
		}
		return "@" + classpathFile.getAbsolutePath();
	}
	catch (IOException ex) {
		throw new IllegalArgumentException("Failed to create classpath file", ex);
	}
}