From 04d70c11fcf55c8b0fe17590d254e06b5cdd4a05 Mon Sep 17 00:00:00 2001
From: bruvzg <7645683+bruvzg@users.noreply.github.com>
Date: Wed, 19 Jun 2024 21:22:10 +0300
Subject: [PATCH] [Windows/ARM64] Fix raycast/embree ARM64 build with
 LLVM/MinGW.

---
 modules/raycast/config.py                     |  2 +-
 platform/windows/detect.py                    |  1 +
 thirdparty/embree/common/simd/arm/sse2neon.h  | 18 +++++++-
 .../embree/patches/mingw-llvm-arm64.diff      | 46 +++++++++++++++++++
 4 files changed, 65 insertions(+), 2 deletions(-)
 create mode 100644 thirdparty/embree/patches/mingw-llvm-arm64.diff

diff --git a/modules/raycast/config.py b/modules/raycast/config.py
index 0fd35af528f..2fa0058f883 100644
--- a/modules/raycast/config.py
+++ b/modules/raycast/config.py
@@ -1,6 +1,6 @@
 def can_build(env, platform):
     # Supported architectures and platforms depend on the Embree library.
-    if env["arch"] == "arm64" and platform == "windows":
+    if env["arch"] == "arm64" and platform == "windows" and env.msvc:
         return False
     if env["arch"] in ["x86_64", "arm64", "wasm32"]:
         return True
diff --git a/platform/windows/detect.py b/platform/windows/detect.py
index 5092c6fadff..8cb8be45daa 100644
--- a/platform/windows/detect.py
+++ b/platform/windows/detect.py
@@ -678,6 +678,7 @@ def configure_mingw(env: "SConsEnvironment"):
         env["CXX"] = mingw_bin_prefix + "clang++"
         if try_cmd("as --version", env["mingw_prefix"], env["arch"]):
             env["AS"] = mingw_bin_prefix + "as"
+            env.Append(ASFLAGS=["-c"])
         if try_cmd("ar --version", env["mingw_prefix"], env["arch"]):
             env["AR"] = mingw_bin_prefix + "ar"
         if try_cmd("ranlib --version", env["mingw_prefix"], env["arch"]):
diff --git a/thirdparty/embree/common/simd/arm/sse2neon.h b/thirdparty/embree/common/simd/arm/sse2neon.h
index b18d41e783f..76579f94975 100644
--- a/thirdparty/embree/common/simd/arm/sse2neon.h
+++ b/thirdparty/embree/common/simd/arm/sse2neon.h
@@ -102,7 +102,9 @@
 #include <stdint.h>
 #include <stdlib.h>
 
-#if defined(_WIN32)
+// -- GODOT start --
+#if defined(_WIN32) && !defined(__MINGW32__)
+// -- GODOT end --
 /* Definitions for _mm_{malloc,free} are provided by <malloc.h>
  * from both MinGW-w64 and MSVC.
  */
@@ -1888,7 +1890,13 @@ FORCE_INLINE __m128 _mm_div_ss(__m128 a, __m128 b)
 #if !defined(SSE2NEON_ALLOC_DEFINED)
 FORCE_INLINE void _mm_free(void *addr)
 {
+// -- GODOT start --
+#if defined(_WIN32)
+    _aligned_free(addr);
+#else
     free(addr);
+#endif
+// -- GODOT end --
 }
 #endif
 
@@ -2080,8 +2088,16 @@ FORCE_INLINE void *_mm_malloc(size_t size, size_t align)
         return malloc(size);
     if (align == 2 || (sizeof(void *) == 8 && align == 4))
         align = sizeof(void *);
+// -- GODOT start --
+#if defined(_WIN32)
+    ptr = _aligned_malloc(size, align);
+    if (ptr)
+        return ptr;
+#else
     if (!posix_memalign(&ptr, align, size))
         return ptr;
+#endif
+// -- GODOT end --
     return NULL;
 }
 #endif
diff --git a/thirdparty/embree/patches/mingw-llvm-arm64.diff b/thirdparty/embree/patches/mingw-llvm-arm64.diff
new file mode 100644
index 00000000000..c2ad4fb1dc0
--- /dev/null
+++ b/thirdparty/embree/patches/mingw-llvm-arm64.diff
@@ -0,0 +1,46 @@
+diff --git a/thirdparty/embree/common/simd/arm/sse2neon.h b/thirdparty/embree/common/simd/arm/sse2neon.h
+index b18d41e783..c54d0b7951 100644
+--- a/thirdparty/embree/common/simd/arm/sse2neon.h
++++ b/thirdparty/embree/common/simd/arm/sse2neon.h
+@@ -102,7 +102,9 @@
+ #include <stdint.h>
+ #include <stdlib.h>
+ 
+-#if defined(_WIN32)
++// -- GODOT start --
++#if defined(_WIN32) && !defined(__MINGW32__)
++// -- GODOT end --
+ /* Definitions for _mm_{malloc,free} are provided by <malloc.h>
+  * from both MinGW-w64 and MSVC.
+  */
+@@ -2080,8 +2082,16 @@ FORCE_INLINE void *_mm_malloc(size_t size, size_t align)
+         return malloc(size);
+     if (align == 2 || (sizeof(void *) == 8 && align == 4))
+         align = sizeof(void *);
+-    if (!posix_memalign(&ptr, align, size))
++// -- GODOT start --
++#if defined(_WIN32)
++    ptr = _aligned_malloc(size, align);
++    if (ptr)
+         return ptr;
++#else
++    if (!posix_memalign(&ptr, align, size))
++        return ptr;
++#endif
++// -- GODOT end --
+     return NULL;
+ }
+ #endif
+@@ -1890,7 +1890,13 @@ FORCE_INLINE __m128 _mm_div_ss(__m128 a, __m128 b)
+ #if !defined(SSE2NEON_ALLOC_DEFINED)
+ FORCE_INLINE void _mm_free(void *addr)
+ {
++// -- GODOT start --
++#if defined(_WIN32)
++    _aligned_free(addr);
++#else
+     free(addr);
++#endif
++// -- GODOT end --
+ }
+ #endif