Update -g to include all informaton for profiling on Linux.

Author: jovanstevanovic

substratevm/src/com.oracle.svm.core/src/com/oracle/svm/core/SubstrateOptions.java

@@ -748,8 +748,12 @@ public static int codeAlignment() {
     public static final HostedOptionKey<Integer> GenerateDebugInfo = new HostedOptionKey<>(0, SubstrateOptions::validateGenerateDebugInfo) {
         @Override
         protected void onValueUpdate(EconomicMap<OptionKey<?>, Object> values, Integer oldValue, Integer newValue) {
-            if (OS.WINDOWS.isCurrent()) {
-                /* Keep symbols on Windows. The symbol table is part of the pdb-file. */
+            if (!OS.DARWIN.isCurrent()) {
+                /*
+                 * Keep the symbol table, as it may be used by debugging or profiling tools (e.g.,
+                 * perf). On Windows, the symbol table is included in the pdb-file, while on Linux,
+                 * it is part of the .debug file.
+                 */
                 DeleteLocalSymbols.update(values, newValue == 0);
             }
         }

substratevm/src/com.oracle.svm.hosted/src/com/oracle/svm/hosted/image/NativeImageDebugInfoStripFeature.java

@@ -114,7 +114,7 @@ private static void stripLinux(AfterImageWriteAccessImpl accessImpl) {
 
     private static Path createKeepSymbolsListFile(AfterImageWriteAccessImpl accessImpl) throws IOException {
         Path exportedSymbolsPath = accessImpl.getTempDirectory().resolve("keep-symbols.list").toAbsolutePath();
-        Files.write(exportedSymbolsPath, accessImpl.getImageSymbols(false));
+        Files.write(exportedSymbolsPath, accessImpl.getImageSymbols(true));
         return exportedSymbolsPath;
     }
 }