@VMODULE relative paths in #flag lines

vlib/compiler/tests/project_with_c_code/.gitignore

@@ -0,0 +1,3 @@
+main
+mod1/c/implementation.o
+main_test

vlib/compiler/tests/project_with_c_code/main.v

@@ -0,0 +1,8 @@
+module main
+
+import mod1
+
+fn main(){
+	res := mod1.vadd(1,2)
+	println( res )
+}

vlib/compiler/tests/project_with_c_code/main_test.v

@@ -0,0 +1,5 @@
+import mod1
+
+fn test_using_c_code_in_the_same_module_works(){
+	assert 1003 == mod1.vadd(1,2)
+}

vlib/compiler/tests/project_with_c_code/mod1/c/header.h

@@ -0,0 +1,6 @@
+#ifndef ADD_H
+#define ADD_H
+
+int cadd(int a, int b);
+
+#endif

vlib/compiler/tests/project_with_c_code/mod1/c/implementation.c

@@ -0,0 +1,5 @@
+#include "header.h"
+
+int cadd(int a, int b) {
+    return a + b;
+}

vlib/compiler/tests/project_with_c_code/mod1/wrapper.v

@@ -0,0 +1,12 @@
+module mod1
+
+#flag -I @VMODULE/c
+#flag @VMODULE/c/implementation.o
+
+#include "header.h"
+
+fn C.cadd(int,int) int
+
+pub fn vadd(a int, b int) int {
+	return 1000 + C.cadd(a,b)
+}