private static String getMultiArchPath() {
String cpu = System.getProperty("os.arch").toLowerCase().trim();
String kernel = Platform.iskFreeBSD() ? "-kfreebsd" : (Platform.isGNU() ? "" : "-linux");
String libc = "-gnu";
if (Platform.isIntel()) {
cpu = (Platform.is64Bit() ? "x86_64" : "i386");
} else if (Platform.isPPC()) {
cpu = (Platform.is64Bit() ? "powerpc64" : "powerpc");
} else if (Platform.isARM()) {
cpu = "arm";
libc = "-gnueabi";
}
return cpu + kernel + libc;
}
static {
String webstartPath = Native.getWebStartLibraryPath("jnidispatch");
if (webstartPath != null) {
librarySearchPath.add(webstartPath);
}
if (System.getProperty("jna.platform.library.path") == null && !Platform.isWindows()) {
// Add default path lookups for unix-like systems
String platformPath = "";
String sep = "";
String archPath = "";
//
// Search first for an arch specific path if one exists, but always
// include the generic paths if they exist.
// NOTES (wmeissner):
// Some older linux amd64 distros did not have /usr/lib64, and
// 32bit distros only have /usr/lib. FreeBSD also only has
// /usr/lib by default, with /usr/lib32 for 32bit compat.
// Solaris seems to have both, but defaults to 32bit userland even
// on 64bit machines, so we have to explicitly search the 64bit
// one when running a 64bit JVM.
//
if (Platform.isLinux()
|| Platform.isSolaris()
|| Platform.isFreeBSD()
|| Platform.iskFreeBSD()) {
// Linux & FreeBSD use /usr/lib32, solaris uses /usr/lib/32
archPath = (Platform.isSolaris() ? "/" : "") + Pointer.SIZE * 8;
}
String[] paths = {
"/usr/lib" + archPath, "/lib" + archPath, "/usr/lib", "/lib",
};
// Multi-arch support on Ubuntu (and other
// multi-arch distributions)
// paths is scanned against real directory
// so for platforms which are not multi-arch
// this should continue to work.
if (Platform.isLinux() || Platform.iskFreeBSD() || Platform.isGNU()) {
String multiArchPath = getMultiArchPath();
// Assemble path with all possible options
paths =
new String[] {
"/usr/lib/" + multiArchPath,
"/lib/" + multiArchPath,
"/usr/lib" + archPath,
"/lib" + archPath,
"/usr/lib",
"/lib",
};
}
for (int i = 0; i < paths.length; i++) {
File dir = new File(paths[i]);
if (dir.exists() && dir.isDirectory()) {
platformPath += sep + paths[i];
sep = File.pathSeparator;
}
}
if (!"".equals(platformPath)) {
System.setProperty("jna.platform.library.path", platformPath);
}
}
librarySearchPath.addAll(initPaths("jna.platform.library.path"));
}