/**
* Tries to find automatically include paths for {@code jni.h} and {@code jni_md.h}, as well as
* the link and library paths for the {@code jvm} library.
*
* @param properties the Properties containing the paths to update
* @param header to request support for exporting callbacks via generated header file
*/
static void includeJavaPaths(ClassProperties properties, boolean header) {
if (properties.getProperty("platform", "").startsWith("android")) {
// Android includes its own jni.h file and doesn't have a jvm library
return;
}
String platform = Loader.getPlatform();
final String jvmlink =
properties.getProperty("platform.link.prefix", "")
+ "jvm"
+ properties.getProperty("platform.link.suffix", "");
final String jvmlib =
properties.getProperty("platform.library.prefix", "")
+ "jvm"
+ properties.getProperty("platform.library.suffix", "");
final String[] jnipath = new String[2];
final String[] jvmpath = new String[2];
FilenameFilter filter =
new FilenameFilter() {
@Override
public boolean accept(File dir, String name) {
if (new File(dir, "jni.h").exists()) {
jnipath[0] = dir.getAbsolutePath();
}
if (new File(dir, "jni_md.h").exists()) {
jnipath[1] = dir.getAbsolutePath();
}
if (new File(dir, jvmlink).exists()) {
jvmpath[0] = dir.getAbsolutePath();
}
if (new File(dir, jvmlib).exists()) {
jvmpath[1] = dir.getAbsolutePath();
}
return new File(dir, name).isDirectory();
}
};
File javaHome = new File(System.getProperty("java.home")).getParentFile();
try {
javaHome = javaHome.getCanonicalFile();
} catch (IOException e) {
}
ArrayList<File> dirs = new ArrayList<File>(Arrays.asList(javaHome.listFiles(filter)));
while (!dirs.isEmpty()) {
File d = dirs.remove(dirs.size() - 1);
String dpath = d.getPath();
for (File f : d.listFiles(filter)) {
try {
f = f.getCanonicalFile();
} catch (IOException e) {
}
if (!dpath.startsWith(f.getPath())) {
dirs.add(f);
}
}
}
if (jnipath[0] != null && jnipath[0].equals(jnipath[1])) {
jnipath[1] = null;
} else if (jnipath[0] == null) {
String macpath = "/System/Library/Frameworks/JavaVM.framework/Headers/";
if (new File(macpath).isDirectory()) {
jnipath[0] = macpath;
}
}
if (jvmpath[0] != null && jvmpath[0].equals(jvmpath[1])) {
jvmpath[1] = null;
}
properties.addAll("platform.includepath", jnipath);
if (platform.equals(properties.getProperty("platform", platform))) {
if (header) {
// We only need libjvm for callbacks exported with the header file
properties.get("platform.link").add(0, "jvm");
properties.addAll("platform.linkpath", jvmpath);
}
if (platform.startsWith("macosx")) {
properties.addAll("platform.framework", "JavaVM");
}
}
}
/**
* Launches and waits for the native compiler to produce a native shared library.
*
* @param sourceFilename the C++ source filename
* @param outputFilename the output filename of the shared library
* @param properties the Properties detailing the compiler options to use
* @return the result of {@link Process#waitFor()}
* @throws IOException
* @throws InterruptedException
*/
int compile(String sourceFilename, String outputFilename, ClassProperties properties)
throws IOException, InterruptedException {
ArrayList<String> command = new ArrayList<String>();
includeJavaPaths(properties, header);
String platform = Loader.getPlatform();
String compilerPath = properties.getProperty("platform.compiler");
command.add(compilerPath);
{
String p = properties.getProperty("platform.sysroot.prefix", "");
for (String s : properties.get("platform.sysroot")) {
if (new File(s).isDirectory()) {
if (p.endsWith(" ")) {
command.add(p.trim());
command.add(s);
} else {
command.add(p + s);
}
}
}
}
{
String p = properties.getProperty("platform.includepath.prefix", "");
for (String s : properties.get("platform.includepath")) {
if (new File(s).isDirectory()) {
if (p.endsWith(" ")) {
command.add(p.trim());
command.add(s);
} else {
command.add(p + s);
}
}
}
}
command.add(sourceFilename);
Collection<String> allOptions = properties.get("platform.compiler.*");
if (allOptions.isEmpty()) {
allOptions.add("default");
}
for (String s : allOptions) {
if (s == null || s.length() == 0) {
continue;
}
String p = "platform.compiler." + s;
String options = properties.getProperty(p);
if (options != null && options.length() > 0) {
command.addAll(Arrays.asList(options.split(" ")));
} else if (!"default".equals(s)) {
logger.warn("Could not get the property named \"" + p + "\"");
}
}
command.addAll(compilerOptions);
String output = properties.getProperty("platform.compiler.output");
if (output != null && output.length() > 0) {
command.addAll(Arrays.asList(output.split(" ")));
}
if (output == null || output.length() == 0 || output.endsWith(" ")) {
command.add(outputFilename);
} else {
command.add(command.remove(command.size() - 1) + outputFilename);
}
{
String p = properties.getProperty("platform.linkpath.prefix", "");
String p2 = properties.getProperty("platform.linkpath.prefix2");
for (String s : properties.get("platform.linkpath")) {
if (new File(s).isDirectory()) {
if (p.endsWith(" ")) {
command.add(p.trim());
command.add(s);
} else {
command.add(p + s);
}
if (p2 != null) {
if (p2.endsWith(" ")) {
command.add(p2.trim());
command.add(s);
} else {
command.add(p2 + s);
}
}
}
}
}
{
String p = properties.getProperty("platform.link.prefix", "");
String x = properties.getProperty("platform.link.suffix", "");
int i = command.size(); // to inverse order and satisfy typical compilers
for (String s : properties.get("platform.link")) {
String[] libnameversion = s.split("@");
if (libnameversion.length == 3 && libnameversion[1].length() == 0) {
// Only use the version number when the user gave us a double @
s = libnameversion[0] + libnameversion[2];
} else {
s = libnameversion[0];
}
if (p.endsWith(" ") && x.startsWith(" ")) {
command.add(i, p.trim());
command.add(i + 1, s);
command.add(i + 2, x.trim());
} else if (p.endsWith(" ")) {
command.add(i, p.trim());
command.add(i + 1, s + x);
} else if (x.startsWith(" ")) {
command.add(i, p + s);
command.add(i + 1, x.trim());
} else {
command.add(i, p + s + x);
}
}
}
{
String p = properties.getProperty("platform.frameworkpath.prefix", "");
for (String s : properties.get("platform.frameworkpath")) {
if (new File(s).isDirectory()) {
if (p.endsWith(" ")) {
command.add(p.trim());
command.add(s);
} else {
command.add(p + s);
}
}
}
}
{
String p = properties.getProperty("platform.framework.prefix", "");
String x = properties.getProperty("platform.framework.suffix", "");
for (String s : properties.get("platform.framework")) {
if (p.endsWith(" ") && x.startsWith(" ")) {
command.add(p.trim());
command.add(s);
command.add(x.trim());
} else if (p.endsWith(" ")) {
command.add(p.trim());
command.add(s + x);
} else if (x.startsWith(" ")) {
command.add(p + s);
command.add(x.trim());
} else {
command.add(p + s + x);
}
}
}
String text = "";
boolean windows = platform.startsWith("windows");
for (String s : command) {
boolean hasSpaces = s.indexOf(" ") > 0;
if (hasSpaces) {
text += windows ? "\"" : "'";
}
text += s;
if (hasSpaces) {
text += windows ? "\"" : "'";
}
text += " ";
}
logger.info(text);
ProcessBuilder pb = new ProcessBuilder(command);
if (environmentVariables != null) {
pb.environment().putAll(environmentVariables);
}
return pb.inheritIO().start().waitFor();
}