6 files changed, 79 insertions, 7 deletions
diff --git a/.vscode/launch.json b/.vscode/launch.json
new file mode 100644
index 0000000..cead727
--- /dev/null
+++ b/.vscode/launch.json
@@ -0,0 +1,52 @@
+{
+    // 使用 IntelliSense 了解相关属性。 
+    // 悬停以查看现有属性的描述。
+    // 欲了解更多信息，请访问: https://go.microsoft.com/fwlink/?linkid=830387
+    "version": "0.2.0",
+    "configurations": [
+
+        {
+            "type": "lldb",
+            "request": "launch",
+            "name": "Debug executable 'ffi_demo'",
+            "cargo": {
+                "args": [
+                    "build",
+                    "--bin=ffi_demo",
+                    "--package=ffi_demo"
+                ],
+                "filter": {
+                    "name": "ffi_demo",
+                    "kind": "bin"
+                }
+            },
+            "args": [],
+            "cwd": "${workspaceFolder}",
+            "env": {
+                "LD_LIBRARY_PATH": "${workspaceFolder}"
+            }
+        },
+        {
+            "type": "lldb",
+            "request": "launch",
+            "name": "Debug unit tests in executable 'ffi_demo'",
+            "cargo": {
+                "args": [
+                    "test",
+                    "--no-run",
+                    "--bin=ffi_demo",
+                    "--package=ffi_demo"
+                ],
+                "filter": {
+                    "name": "ffi_demo",
+                    "kind": "bin"
+                }
+            },
+            "args": [],
+            "cwd": "${workspaceFolder}",
+            "env": {
+                "LD_LIBRARY_PATH": "${workspaceFolder}"
+            }
+        }
+    ]
+}
+\ No newline at end of file
diff --git a/README b/README
index d345786..a756e25 100644
--- a/README
+++ b/README
@@ -1,4 +1,11 @@
-使用静态库
-- `*.a` 和 `*.o` 文件存在在同一级目录
-- build.rs 声明搜索路径: `println!("cargo:rustc-link-search=native=./");`
-- 如果不想每个 extern 都写个 linkxx 可以全局声明: `println!("cargo:rustc-link-lib=static=sample");`
-\ No newline at end of file
+动态库就不能像 静态库那样 仅仅添加个路径就好,而是 需要修改 `LD_LIBRARY_PATH` 指向 动态库的路径;
+
+```bash
+println!("cargo:rustc-env=LD_LIBRARY_PATH=/home/jan/Uni/Bachelorarbeit/Programme/Rust_Cpp_crossover_erneut/");
+```
+
+添加如上一行, 仅仅对 cargo run 命令生效. cargo build / debug 不生效.
+
+总之在 cargo build/debug 前要让 LD_LIBRARY_PATH 指向 动态库的路径.
+
+还可以单独在 launch 的 env 下修改
+\ No newline at end of file
diff --git a/build.rs b/build.rs
index a95b53d..6d8c738 100644
--- a/build.rs
+++ b/build.rs
@@ -1,5 +1,18 @@
+use std::env;
+
 fn main() {
     // cc::Build::new().file("sample.c").compile("sample");
-    println!("cargo:rustc-link-search=native=./");
-    println!("cargo:rustc-link-lib=static=sample");
-}
-\ No newline at end of file
+
+    let current_dir = env::current_dir().unwrap();
+    let lib_path = current_dir.to_str().unwrap();
+    env::set_var("LD_LIBRARY_PATH", lib_path);
+
+    println!("cargo:rustc-env=LD_LIBRARY_PATH=./");
+
+    let current_dir = env::current_dir().unwrap();
+    let lib_path = current_dir.to_str().unwrap();
+    println!("cargo:rustc-link-search=native={}", lib_path);
+
+    // println!("cargo:rustc-link-search=all=./");
+    println!("cargo:rustc-link-lib=dylib=sample");
+}
diff --git a/libsample.a b/libsample.a
deleted file mode 100644
index 6cec544..0000000
--- a/libsample.a
+++ /dev/null
diff --git a/libsample.so b/libsample.so
new file mode 100755
index 0000000..83f63e5
--- /dev/null
+++ b/libsample.so
diff --git a/sample.o b/sample.o
deleted file mode 100644
index 4731397..0000000
--- a/sample.o
+++ /dev/null