Separate performance project (#4473)

kotlin-native/performance/numerical/build.gradle.kts

@@ -7,7 +7,7 @@ import org.jetbrains.kotlin.benchmark.BenchmarkingPlugin
 import org.jetbrains.kotlin.ExecClang
 import org.jetbrains.kotlin.gradle.plugin.mpp.KotlinNativeTarget
 import org.jetbrains.kotlin.gradle.plugin.mpp.NativeBuildType
-import org.jetbrains.kotlin.konan.target.HostManager
+import org.jetbrains.kotlin.konan.target.*
 
 plugins {
     id("benchmarking")
@@ -22,24 +22,7 @@ benchmark {
     nativeSrcDirs = listOf("src/main/kotlin-native", "../shared/src/main/kotlin-native/common")
     mingwSrcDirs = listOf("../shared/src/main/kotlin-native/mingw")
     posixSrcDirs = listOf("../shared/src/main/kotlin-native/posix")
-    linkerOpts = listOf("$buildDir/pi.o")
     buildType = (findProperty("nativeBuildType") as String?)?.let { NativeBuildType.valueOf(it) } ?: defaultBuildType
-
-    dependencies.common(project(":endorsedLibraries:kotlinx.cli"))
-}
-
-val compileLibary by tasks.creating {
-    doFirst {
-        mkdir(buildDir)
-
-        project.withConvention(ExecClang::class) {
-            execKonanClang(HostManager.host) {
-                args("-O3")
-                args("-c", "$projectDir/src/nativeInterop/cinterop/pi.c")
-                args("-o", "$buildDir/pi.o")
-            }
-        }
-    }
 }
 
 val native = kotlin.targets.getByName("native") as KotlinNativeTarget
@@ -47,7 +30,8 @@ native.apply {
     compilations["main"].cinterops {
         create("cinterop") {
             headers("$projectDir/src/nativeInterop/cinterop/pi.h")
+            extraOpts("-Xcompile-source", "$projectDir/src/nativeInterop/cinterop/pi.c")
+            extraOpts("-Xsource-compiler-option", "-O3")
         }
     }
-    binaries.getExecutable(BenchmarkingPlugin.NATIVE_EXECUTABLE_NAME, "RELEASE").linkTask.dependsOn(compileLibary)
 }

kotlin-native/performance/numerical/src/nativeInterop/cinterop/pi.c

@@ -15,6 +15,7 @@
  */
 
 #include <math.h>
+#include "pi.h"
 
 /* uncomment the following line to use 'long long' integers */
 #define HAS_LONG_LONG

kotlin-native/performance/numerical/src/nativeInterop/cinterop/pi.h

@@ -11,6 +11,12 @@
 #ifndef _BELLARD_PI_H
 #define _BELLARD_PI_H
 
+#ifdef __cplusplus
+extern "C" {
+#endif
 int pi_nth_digit(int n);
+#ifdef __cplusplus
+}
+#endif
 
 #endif /*_BELLARD_PI_H*/