PyInit

cl/_testpy/callpy/out.ll

@@ -26,6 +26,7 @@ _llgo_2:                                          ; preds = %_llgo_1, %_llgo_0
 
 define void @main(i32 %0, ptr %1) {
 _llgo_0:
+  call void @Py_Initialize()
   store i32 %0, ptr @__llgo_argc, align 4
   store ptr %1, ptr @__llgo_argv, align 8
   call void @"github.com/goplus/llgo/internal/runtime.init"()
@@ -57,3 +58,5 @@ declare double @PyFloat_AsDouble()
 declare i32 @printf(ptr, ...)
 
 declare ptr @PyBytes_AsString()
+
+declare void @Py_Initialize()

cl/_testpy/math/out.ll

@@ -1,7 +1,7 @@
 ; ModuleID = 'math'
 source_filename = "math"
 
-@__llgo_py.math.sqrt = external global ptr
+@__llgo_py.math.sqrt = linkonce global ptr null
 @"math.init$guard" = global ptr null
 @__llgo_py.math = linkonce global ptr null
 @0 = private unnamed_addr constant [5 x i8] c"math\00", align 1

cl/cltest/cltest.go

@@ -159,6 +159,11 @@ func TestCompileEx(t *testing.T, src any, fname, expected string) {
 	if err != nil {
 		t.Fatal("cl.NewPackage failed:", err)
 	}
+
+	if prog.NeedPyInit() { // call PyInit if needed
+		ret.PyInit()
+	}
+
 	if v := ret.String(); v != expected {
 		t.Fatalf("\n==> got:\n%s\n==> expected:\n%s\n", v, expected)
 	}

cl/compile.go

@@ -380,8 +380,7 @@ const (
 )
 
 func callRuntimeInit(b llssa.Builder, pkg llssa.Package) {
-	sig := types.NewSignatureType(nil, nil, nil, nil, nil, false)
-	fn := pkg.NewFunc(RuntimeInit, sig, llssa.InC) // don't need to convert runtime.init
+	fn := pkg.NewFunc(RuntimeInit, llssa.NoArgsNoRet, llssa.InC) // don't need to convert runtime.init
 	b.Call(fn.Expr)
 }
 

cl/compile_test.go

@@ -33,7 +33,7 @@ func TestFromTestpy(t *testing.T) {
 }
 
 func TestFromTestlibc(t *testing.T) {
-	cltest.FromDir(t, "", "./_testlibc", false)
+	cltest.FromDir(t, "", "./_testlibc", true)
 }
 
 func TestFromTestrt(t *testing.T) {

cl/import.go

@@ -214,7 +214,7 @@ func (p *context) initLink(line string, prefix int, f func(inPkgName string) (fu
 			} else {
 				panic(line + ": no specified call convention. eg. //go:linkname Printf C.printf")
 			}
-		} else {
+		} else if c := inPkgName[0]; c >= 'A' && c <= 'Z' {
 			fmt.Fprintln(os.Stderr, "==>", line)
 			fmt.Fprintf(os.Stderr, "llgo: linkname %s not found and ignored\n", inPkgName)
 		}