refactor: improve android NDK logging

Author: DimitarTachev

snapshot/android/project-snapshot-generator.js

@@ -148,8 +148,6 @@ ProjectSnapshotGenerator.prototype.generate = function (generationOptions) {
     shelljs.mkdir("-p", this.getBuildPath());
 
     const snapshotToolsPath = resolveRelativePath(generationOptions.snapshotToolsPath) || CONSTANTS.SNAPSHOT_TMP_DIR;
-    const androidNdkPath = generationOptions.androidNdkPath || process.env.ANDROID_NDK_HOME;
-
     console.log("Snapshot tools path: " + snapshotToolsPath);
 
     // Generate snapshots
@@ -178,7 +176,7 @@ ProjectSnapshotGenerator.prototype.generate = function (generationOptions) {
         preprocessedInputFile: generationOptions.preprocessedInputFile,
         useLibs: generationOptions.useLibs || false,
         inputFiles: generationOptions.inputFiles || [join(this.options.projectRoot, "__snapshot.js")],
-        androidNdkPath,
+        androidNdkPath: generationOptions.androidNdkPath,
         mksnapshotParams: mksnapshotParams,
         snapshotInDocker: generationOptions.snapshotInDocker,
         recommendedAndroidNdkRevision

snapshot/android/snapshot-generator.js

@@ -220,26 +220,42 @@ SnapshotGenerator.prototype.getAndroidNdkBuildPath = function (androidNdkPath, r
         if (!fs.existsSync(androidNdkBuildPath)) {
             throw new Error(`The provided Android NDK path does not contain ${ndkBuildExecutableName} executable.`);
         } else if (localNdkRevision !== recommendedAndroidNdkRevision) {
-            warn(`The provided Android NDK is v${localNdkRevision} while the recommended one is v${recommendedAndroidNdkRevision}`);
+            warn(this.getRecommendedNdkWarning(localNdkRevision, recommendedAndroidNdkRevision));
         }
+        console.log("Using Android NDK from webpack.config.");
     } else {
-        // available globally
-        let hasAndroidNdkInPath = true;
-        androidNdkBuildPath = ndkBuildExecutableName;
-        try {
-            child_process.execSync(`${androidNdkBuildPath} --version`);
-            console.log(`Cannot determine the version of the global Android NDK. The recommended versions is v${recommendedAndroidNdkRevision}`);
-        } catch (_) {
-            hasAndroidNdkInPath = false;
+        let hasLocalNdk = true;
+        if (process.env.ANDROID_NDK_HOME) {
+            // check ANDROID_NDK_HOME
+            const localNdkRevision = this.getAndroidNdkRevision(process.env.ANDROID_NDK_HOME);
+            androidNdkBuildPath = join(process.env.ANDROID_NDK_HOME, ndkBuildExecutableName);
+            if (!fs.existsSync(androidNdkBuildPath)) {
+                hasLocalNdk = false;
+            } else if (localNdkRevision !== recommendedAndroidNdkRevision) {
+                warn(this.getRecommendedNdkWarning(localNdkRevision, recommendedAndroidNdkRevision));
+            }
+            console.log("Using Android NDK from ANDROID_NDK_HOME.");
+        }
+
+        if (!hasLocalNdk) {
+            // available globally
+            androidNdkBuildPath = ndkBuildExecutableName;
+            try {
+                child_process.execSync(`${androidNdkBuildPath} --version`);
+                console.log("Using Android NDK from PATH.");
+                console.log(`Cannot determine the version of the global Android NDK. The recommended versions is v${recommendedAndroidNdkRevision}`);
+            } catch (_) {
+                hasLocalNdk = false;
+            }
         }
 
-        if (!hasAndroidNdkInPath) {
+        if (!hasLocalNdk) {
             // installed in ANDROID_HOME
-            const androidHome = process.env.ANDROID_HOME;
-            androidNdkBuildPath = join(androidHome, "ndk", recommendedAndroidNdkRevision, ndkBuildExecutableName);
+            androidNdkBuildPath = join(process.env.ANDROID_HOME, "ndk", recommendedAndroidNdkRevision, ndkBuildExecutableName);
             if (!fs.existsSync(androidNdkBuildPath)) {
-                throw new Error(`Android NDK v${recommendedAndroidNdkRevision} is not installed. You can find installation instructions in this article: https://developer.android.com/studio/projects/install-ndk#specific-version`);
+                throw new Error(`Android NDK v${recommendedAndroidNdkRevision} is not installed. Install it from Android Studio or download it and set ANDROID_NDK_HOME or add it to your PATH. You can find installation instructions in this article: https://developer.android.com/studio/projects/install-ndk#specific-version`);
             }
+            console.log("Using Android NDK from ANDROID_HOME.");
         }
     }
 
@@ -369,6 +385,10 @@ SnapshotGenerator.prototype.buildCSource = function (androidArch, blobInputDir,
     });
 }
 
+SnapshotGenerator.prototype.getRecommendedNdkWarning = function (localNdkRevision, recommendedAndroidNdkRevision) {
+    return `The provided Android NDK is v${localNdkRevision} while the recommended one is v${recommendedAndroidNdkRevision}`;
+}
+
 SnapshotGenerator.prototype.runMksnapshotTool = function (tool, mksnapshotParams, inputFile, snapshotInDocker, snapshotToolsPath, buildCSource) {
     const toolPath = tool.path;
     const androidArch = this.convertToAndroidArchName(tool.arch);