Allow to build static library (on iOS)

src/main/java/com/gluonhq/substrate/SubstrateDispatcher.java

@@ -510,4 +510,20 @@ public boolean nativeSharedLibrary() throws Exception {
         config.setSharedLibrary(true);
         return targetConfiguration.createSharedLib();
     }
+
+    /**
+     * This method builds a static library that can be used by third
+     * party projects, considering it contains one or more entry points.
+     *
+     * Static entry points, callable from C, can be created with the {@code @CEntryPoint}
+     * annotation.
+     *
+     * @throws Exception
+     */
+    public boolean nativeStaticLibrary() throws Exception {
+        Logger.logInfo(logTitle("STATIC LIBRARY TASK"));
+        config.setStaticLibrary(true);
+        return targetConfiguration.createStaticLib();
+    }
+
 }

src/main/java/com/gluonhq/substrate/model/InternalProjectConfiguration.java

@@ -66,6 +66,7 @@ public class InternalProjectConfiguration {
     private boolean enableCheckHash = true;
     private boolean usesJDK11 = false;
     private boolean sharedLibrary = false;
+    private boolean staticLibrary = false;
 
     private String backend;
     private List<String> initBuildTimeList;
@@ -335,6 +336,14 @@ public void setSharedLibrary(boolean sharedLibrary) {
         this.sharedLibrary = sharedLibrary;
     }
 
+    public boolean isStaticLibrary() {
+        return staticLibrary;
+    }
+
+    public void setStaticLibrary(boolean staticLibrary) {
+        this.staticLibrary = staticLibrary;
+    }
+
     public Triplet getTargetTriplet() {
         return Objects.requireNonNull( publicConfig.getTargetTriplet(), "Target triplet is required");
     }
@@ -360,6 +369,7 @@ public void setBackend(String backend) {
         this.backend = backend;
     }
 
+    @Deprecated
     public boolean isUseLLVM() {
         return Constants.BACKEND_LLVM.equals(backend);
     }
@@ -511,6 +521,7 @@ public void checkGraalVMVendor() throws IOException {
      * @throws IOException
      * @throws InterruptedException
      */
+    @Deprecated
     public void canRunLLVM(Triplet triplet) throws IOException, InterruptedException {
         if (!new Triplet(Constants.Profile.IOS).equals(triplet) &&
                 !new Triplet(Constants.Profile.ANDROID).equals(triplet) &&

src/main/java/com/gluonhq/substrate/target/AbstractTargetConfiguration.java

@@ -184,32 +184,22 @@ public boolean compile() throws IOException, InterruptedException {
         return validateCompileResult(result);
     }
 
-    /**
-    * Links a previously created objectfile with the required
-    * dependencies into a native executable.
-    * @return true if linking succeeded, false otherwise
-    */
     @Override
     public boolean link() throws IOException, InterruptedException {
         compileAdditionalSources();
         ensureClibs();
 
         String appName = projectConfiguration.getAppName();
-        String objectFilename = projectConfiguration.getMainClassName().toLowerCase(Locale.ROOT) + "." + getObjectFileExtension();
         Path gvmPath = paths.getGvmPath();
-        Path objectFile = FileOps.findFile(gvmPath, objectFilename).orElseThrow( () ->
-            new IllegalArgumentException(
-                    "Linking failed, since there is no objectfile named " + objectFilename + " under " + gvmPath.toString())
-        );
+        Path objectFile = getProjectObjectFile();
 
+        if (projectConfiguration.isStaticLibrary()) {
+            return createStaticLib();
+        }
         ProcessRunner linkRunner = new ProcessRunner(getLinker());
 
         Path gvmAppPath = gvmPath.resolve(appName);
-        linkRunner.addArgs(getAdditionalSourceFiles().stream()
-                .map(s -> s.replaceAll("\\..*", "." + getObjectFileExtension()))
-                .distinct()
-                .map(sourceFile -> gvmAppPath.resolve(sourceFile).toString())
-                .collect(Collectors.toList()));
+        linkRunner.addArgs(getAdditionalObjectFiles());
 
         linkRunner.addArg(objectFile.toString());
         linkRunner.addArgs(getTargetSpecificObjectFiles());
@@ -317,6 +307,17 @@ public boolean createSharedLib() throws IOException, InterruptedException {
         return true;
     }
 
+    /**
+     * Creates a static library
+     * @return true if the process succeeded or false if the process failed
+     * @throws IOException
+     * @throws InterruptedException
+     */
+    @Override
+    public boolean createStaticLib() throws IOException, InterruptedException {
+        return true;
+    }
+
     // --- private methods
 
     protected boolean compileAdditionalSources()
@@ -978,6 +979,7 @@ List<String> getTargetSpecificAOTCompileFlags() throws IOException {
         return Collections.emptyList();
     }
 
+    @Deprecated
     List<String> getTargetSpecificObjectFiles() throws IOException {
         return Collections.emptyList();
     }
@@ -1030,4 +1032,38 @@ protected List<Path> getStaticJDKLibPaths() throws IOException {
             return Arrays.asList(staticJDKLibPath);
         }
     }
+
+    /**
+     * Get the objectfiles that are compiled from the additionalSourceFiles
+     *
+     * @return
+     */
+    final List<String> getAdditionalObjectFiles() {
+        String appName = projectConfiguration.getAppName();
+        Path gvmPath = paths.getGvmPath();
+        Path gvmAppPath = gvmPath.resolve(appName);
+        List<String> answer = getAdditionalSourceFiles().stream()
+                .map(s -> s.replaceAll("\\..*", "." + getObjectFileExtension()))
+                .distinct()
+                .map(sourceFile -> gvmAppPath.resolve(sourceFile).toString())
+                .collect(Collectors.toList());
+
+        return answer;
+    }
+
+    /**
+     * Return the location of the compiled application file. This is the file
+     * that is generated by the AOT compiler.
+     *
+     * @return the Path to the compiled application
+     */
+    final Path getProjectObjectFile() throws IOException {
+        Path gvmPath = paths.getGvmPath();
+        String objectFilename = projectConfiguration.getMainClassName().toLowerCase(Locale.ROOT) + "." + getObjectFileExtension();
+        Path objectFile = FileOps.findFile(gvmPath, objectFilename).orElseThrow(()
+                -> new IllegalArgumentException(
+                        "Linking failed, since there is no objectfile named " + objectFilename + " under " + gvmPath.toString())
+        );
+        return objectFile;
+    }
 }

src/main/java/com/gluonhq/substrate/target/AndroidTargetConfiguration.java

@@ -249,6 +249,7 @@ List<String> getTargetSpecificAOTCompileFlags() throws IOException {
         return flags;
     }
 
+    @Deprecated
     @Override
     List<String> getTargetSpecificObjectFiles() throws IOException {
         if (projectConfiguration.isUseLLVM()) {

src/main/java/com/gluonhq/substrate/target/IosTargetConfiguration.java

@@ -203,6 +203,7 @@ List<String> copyAdditionalSourceFiles(Path workDir) throws IOException {
         return files;
     }
 
+    @Deprecated
     @Override
     List<String> getTargetSpecificObjectFiles() throws IOException {
         if (isSimulator() || !projectConfiguration.isUseLLVM()) {
@@ -342,6 +343,20 @@ String getAppPath(String appName) {
         return appPath.toString() + "/" + appName;
     }
 
+    @Override
+    public boolean createStaticLib() throws IOException, InterruptedException {
+        ProcessRunner linkRunner = new ProcessRunner("ar");
+        linkRunner.addArg("rcs");
+        Path dest = paths.getGvmPath().resolve("lib"+projectConfiguration.getAppName()+".a");
+        linkRunner.addArg(dest.toString());
+        linkRunner.addArg(getProjectObjectFile().toString());
+        linkRunner.addArgs(getAdditionalObjectFiles());
+        linkRunner.setInfo(true);
+        linkRunner.setLogToFile(true);
+        int result = linkRunner.runProcess("archive");
+        return result == 0;
+    }
+
     private String getTargetArch() {
         return projectConfiguration.getTargetTriplet().getArch();
     }

src/main/java/com/gluonhq/substrate/target/TargetConfiguration.java

@@ -39,6 +39,11 @@ public interface TargetConfiguration {
      */
     boolean compile() throws Exception;
 
+    /**
+    * Links a previously created objectfile with the required
+    * dependencies into a native executable or library
+    * @return true if linking succeeded, false otherwise
+    */
     boolean link() throws IOException, InterruptedException;
 
     /**
@@ -91,4 +96,13 @@ public interface TargetConfiguration {
      * @throws InterruptedException
      */
     boolean createSharedLib() throws IOException, InterruptedException;
+
+    /**
+     * Creates a static library
+     * @return true if the process succeeded or false if the process failed
+     * @throws IOException
+     * @throws InterruptedException
+     */
+    boolean createStaticLib() throws IOException, InterruptedException;
+
 }