feat: add macOS native targets (macosX64, macosArm64) to quartz

- Declare macosX64() and macosArm64() KMP targets in build.gradle.kts
- Wire macosMain/macosTest source sets through appleMain/appleTest
- Move Secp256k1NativeBenchmark from linuxX64Test to nativeTest so it
  runs on all native targets (Linux, macOS, iOS)
- Use platform() for dynamic labels instead of hardcoded "linuxX64"
- Update run_all.sh to pick the correct native target per OS/arch

https://claude.ai/code/session_01WSNE6QKiYM2ZutQD2UihCW

quartz/benchmarks/run_all.sh

@@ -82,21 +82,29 @@ fi
 echo ""
 
 # ============================================================================
-# 2. Kotlin/Native benchmark (Linux only — only linuxX64 target exists)
+# 2. Kotlin/Native benchmark (Linux and macOS)
 # ============================================================================
-if [ "$OS_NAME" = "Linux" ]; then
-    echo "=== Running Kotlin/Native benchmark ==="
-    "$ROOT/gradlew" -p "$ROOT" :quartz:linuxX64Test --tests "*.Secp256k1NativeBenchmark" \
-        2>/dev/null || true
+echo "=== Running Kotlin/Native benchmark ==="
+case "$OS_NAME" in
+    Linux)
+        KN_TARGET="linuxX64Test"
+        ;;
+    Darwin)
+        case "$ARCH" in
+            arm64) KN_TARGET="macosArm64Test" ;;
+            *)     KN_TARGET="macosX64Test" ;;
+        esac
+        ;;
+esac
 
-    KN_XML="$ROOT/quartz/build/test-results/linuxX64Test/TEST-linuxX64Test.com.vitorpamplona.quartz.utils.secp256k1.Secp256k1NativeBenchmark.xml"
-    if [ -f "$KN_XML" ]; then
-        sed -n '/<!\[CDATA\[/,/\]\]>/p' "$KN_XML" | grep -v 'CDATA\|]]>'
-    else
-        echo "K/Native benchmark XML not found."
-    fi
+"$ROOT/gradlew" -p "$ROOT" ":quartz:$KN_TARGET" --tests "*.Secp256k1NativeBenchmark" \
+    2>/dev/null || true
+
+KN_XML="$ROOT/quartz/build/test-results/$KN_TARGET/TEST-${KN_TARGET}.com.vitorpamplona.quartz.utils.secp256k1.Secp256k1NativeBenchmark.xml"
+if [ -f "$KN_XML" ]; then
+    sed -n '/<!\[CDATA\[/,/\]\]>/p' "$KN_XML" | grep -v 'CDATA\|]]>'
 else
-    echo "=== Skipping Kotlin/Native benchmark (only linuxX64 target available) ==="
+    echo "K/Native benchmark XML not found."
 fi
 echo ""
 

quartz/build.gradle.kts

@@ -87,6 +87,9 @@ kotlin {
 
     linuxX64()
 
+    macosX64()
+    macosArm64()
+
     // This makes sure that the resource file directory is visible for iOS tests.
     val rootDir = "${rootProject.rootDir.path}/quartz/src/commonTest/resources"
 
@@ -297,6 +300,32 @@ kotlin {
             dependsOn(iosTest.get())
         }
 
+        val macosMain =
+            create("macosMain") {
+                dependsOn(appleMain)
+            }
+
+        val macosTest =
+            create("macosTest") {
+                dependsOn(appleTest)
+            }
+
+        val macosX64Main by getting {
+            dependsOn(macosMain)
+        }
+
+        val macosX64Test by getting {
+            dependsOn(macosTest)
+        }
+
+        val macosArm64Main by getting {
+            dependsOn(macosMain)
+        }
+
+        val macosArm64Test by getting {
+            dependsOn(macosTest)
+        }
+
         val linuxMain =
             create("linuxMain") {
                 dependsOn(nativeMain)

quartz/src/nativeTest/kotlin/com/vitorpamplona/quartz/utils/secp256k1/Secp256k1NativeBenchmark.kt

@@ -20,6 +20,7 @@
  */
 package com.vitorpamplona.quartz.utils.secp256k1
 
+import com.vitorpamplona.quartz.utils.platform
 import kotlin.test.Test
 import kotlin.test.assertTrue
 import kotlin.time.TimeSource
@@ -42,7 +43,10 @@ import kotlin.time.TimeSource
  *
  * Test data is the same across all 3 platform benchmarks for cross-platform comparability.
  *
- * Run with: ./gradlew :quartz:linuxX64Test --tests "*.Secp256k1NativeBenchmark"
+ * Run with:
+ *   ./gradlew :quartz:linuxX64Test --tests "*.Secp256k1NativeBenchmark"
+ *   ./gradlew :quartz:macosArm64Test --tests "*.Secp256k1NativeBenchmark"
+ *   ./gradlew :quartz:macosX64Test --tests "*.Secp256k1NativeBenchmark"
  *
  * IMPORTANT: Requires -opt in the compiler options for meaningful results.
  * Without it, K/N compiles in debug mode (~12x slower). See build.gradle.kts.
@@ -167,7 +171,7 @@ class Secp256k1NativeBenchmark {
                 Secp256k1.ecdhXOnly(pub2xOnly, privKey)
             }
 
-        printResults("secp256k1 Benchmark: Kotlin/Native (LLVM AOT) on linuxX64", results)
+        printResults("secp256k1 Benchmark: Kotlin/Native (LLVM AOT) on ${platform()}", results)
 
         // ==================== Batch verification ====================
         // Same pubkey, n events — the typical Nostr pattern (feed from one author).
@@ -274,7 +278,7 @@ class Secp256k1NativeBenchmark {
                 ltSink = if (uLt(a.l0 xor ltSink, b.l0)) 1L else 0L
             }
 
-        printResults("secp256k1 Field Micro-Benchmarks: Kotlin/Native (LLVM AOT) on linuxX64", results)
+        printResults("secp256k1 Field Micro-Benchmarks: Kotlin/Native (LLVM AOT) on ${platform()}", results)
 
         // Use sinks to prevent dead code elimination of the entire benchmark
         assertTrue(hiSink != Long.MIN_VALUE || ltSink != Long.MIN_VALUE || out.l0 != Long.MIN_VALUE)