[libunwind] Use relative includes to allow source-based dependencies without `-I` (PR #80443)

[via cfe-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-libunwind

Author: Yuriy Chernyshov (georgthegreat)

<details>
<summary>Changes</summary>

We store libunwind code inside monorepo and would like to reduce the overall amount of `-I` flags.

---
Full diff: https://github.com/llvm/llvm-project/pull/80443.diff


2 Files Affected:

- (modified) libunwind/include/libunwind.h (+1-1) 
- (modified) libunwind/include/unwind.h (+3-3) 


``````````diff
diff --git a/libunwind/include/libunwind.h b/libunwind/include/libunwind.h
index b2dae8feed9a3..02739b384e9da 100644
--- a/libunwind/include/libunwind.h
+++ b/libunwind/include/libunwind.h
@@ -13,7 +13,7 @@
 #ifndef __LIBUNWIND__
 #define __LIBUNWIND__
 
-#include <__libunwind_config.h>
+#include "__libunwind_config.h"
 
 #include <stdint.h>
 #include <stddef.h>
diff --git a/libunwind/include/unwind.h b/libunwind/include/unwind.h
index b1775d3a3decc..1973c5826d3ca 100644
--- a/libunwind/include/unwind.h
+++ b/libunwind/include/unwind.h
@@ -13,7 +13,7 @@
 #ifndef __UNWIND_H__
 #define __UNWIND_H__
 
-#include <__libunwind_config.h>
+#include "__libunwind_config.h"
 
 #include <stdint.h>
 #include <stddef.h>
@@ -56,9 +56,9 @@ typedef enum {
 typedef struct _Unwind_Context _Unwind_Context;   // opaque
 
 #if defined(_LIBUNWIND_ARM_EHABI)
-#include <unwind_arm_ehabi.h>
+#include "unwind_arm_ehabi.h"
 #else
-#include <unwind_itanium.h>
+#include "unwind_itanium.h"
 #endif
 
 typedef _Unwind_Reason_Code (*_Unwind_Stop_Fn)

``````````

</details>


https://github.com/llvm/llvm-project/pull/80443