java: javac 9+ print their version to stdout not stderr
Fixes:
@@ -803,8 +803,8 @@ class Environment:
p, out, err = Popen_safe(exelist + ['-version'])
except OSError:
raise EnvironmentException('Could not execute Java compiler "%s"' % ' '.join(exelist))
- version = search_version(err)
if 'javac' in out or 'javac' in err:
+ version = search_version(err if 'javac' in err else out)
return JavaCompiler(exelist, version)
raise EnvironmentException('Unknown compiler "' + ' '.join(exelist) + '"')
