build: separate compiler and libs

compiler/cl/_testgo/cgobasic/cgobasic.go

@@ -0,0 +1,55 @@
+package main
+
+/*
+#include <stdio.h>
+#include <stdlib.h>
+#include <math.h>
+*/
+import "C"
+import (
+	"fmt"
+	"unsafe"
+)
+
+func main() {
+	// C.CString example
+	cstr := C.CString("Hello, World!")
+	C.puts(cstr)
+
+	// C.CBytes example
+	bytes := []byte{65, 66, 67, 68} // ABCD
+	cbytes := C.CBytes(bytes)
+
+	// C.GoString example
+	gostr := C.GoString(cstr)
+	println("Converted back to Go string: ", gostr)
+
+	// C.GoStringN example (with length limit)
+	gostringN := C.GoStringN(cstr, 5) // only take first 5 characters
+	println("Length-limited string: ", gostringN)
+
+	// C.GoBytes example
+	gobytes := C.GoBytes(cbytes, 4) // 4 is the length
+	println("Converted back to Go byte slice: ", gobytes)
+
+	// C math library examples
+	x := 2.0
+	// Calculate square root
+	sqrtResult := C.sqrt(C.double(x))
+	fmt.Printf("sqrt(%v) = %v\n", x, float64(sqrtResult))
+
+	// Calculate sine
+	sinResult := C.sin(C.double(x))
+	fmt.Printf("sin(%v) = %v\n", x, float64(sinResult))
+
+	// Calculate cosine
+	cosResult := C.cos(C.double(x))
+	fmt.Printf("cos(%v) = %v\n", x, float64(cosResult))
+
+	// Calculate natural logarithm
+	logResult := C.log(C.double(x))
+	fmt.Printf("log(%v) = %v\n", x, float64(logResult))
+
+	C.free(unsafe.Pointer(cstr))
+	C.free(cbytes)
+}