From 36422ac73f811738456da0ed562463e84f87ce96 Mon Sep 17 00:00:00 2001
From: Xiaochun Tong <xtong@uwaterloo.ca>
Date: Sun, 26 Nov 2023 13:55:24 -0500
Subject: [PATCH] fix symbol not found on llvm>17

---
 luisa_compute/src/lib.rs       |  7 +++++
 luisa_compute_sys/Cargo.toml   |  3 +++
 luisa_compute_sys/LuisaCompute |  2 +-
 luisa_compute_sys/src/lib.rs   | 47 ++++++++++++++++++++++++++++++++++
 4 files changed, 58 insertions(+), 1 deletion(-)

diff --git a/luisa_compute/src/lib.rs b/luisa_compute/src/lib.rs
index 851e3a08..193aa289 100644
--- a/luisa_compute/src/lib.rs
+++ b/luisa_compute/src/lib.rs
@@ -5,6 +5,7 @@ extern crate self as luisa_compute;
 use std::any::Any;
 use std::backtrace::Backtrace;
 use std::path::Path;
+use std::ptr::null;
 use std::sync::Arc;
 
 pub mod lang;
@@ -117,6 +118,12 @@ impl Context {
     /// if the current_exe() is in the same directory as libluisa-*, then
     /// passing current_exe() is enough
     pub fn new(lib_path: impl AsRef<Path>) -> Self {
+        // Thank you, llvm.
+        #[cfg(target_os = "linux")]
+        unsafe {
+            luisa_compute_sys::llvm_orc_deregisterEHFrameSectionWrapper(null(), 0);
+            luisa_compute_sys::llvm_orc_registerEHFrameSectionWrapper(null(), 0);
+        }
         let mut lib_path = lib_path.as_ref().to_path_buf();
         lib_path = lib_path.canonicalize().unwrap();
         if lib_path.is_file() {
diff --git a/luisa_compute_sys/Cargo.toml b/luisa_compute_sys/Cargo.toml
index 8e3d7619..2d0207b7 100644
--- a/luisa_compute_sys/Cargo.toml
+++ b/luisa_compute_sys/Cargo.toml
@@ -27,3 +27,6 @@ metal = []
 dx = []
 oidn = []
 
+
+[lib]
+crate-type = ["dylib"]
diff --git a/luisa_compute_sys/LuisaCompute b/luisa_compute_sys/LuisaCompute
index 778d80aa..5a3c8ed3 160000
--- a/luisa_compute_sys/LuisaCompute
+++ b/luisa_compute_sys/LuisaCompute
@@ -1 +1 @@
-Subproject commit 778d80aa418dfa760e7feb36f0b88e9da91b0baa
+Subproject commit 5a3c8ed3b838f0991e434994371c894b84977820
diff --git a/luisa_compute_sys/src/lib.rs b/luisa_compute_sys/src/lib.rs
index 8b137891..a104c387 100644
--- a/luisa_compute_sys/src/lib.rs
+++ b/luisa_compute_sys/src/lib.rs
@@ -1 +1,48 @@
+use std::{ffi::c_char, ptr::null};
+// union CWrapperFunctionResultDataUnion {
+//     char *ValuePtr;
+//     char Value[sizeof(ValuePtr)];
+// };
 
+// typedef struct {
+//     CWrapperFunctionResultDataUnion Data;
+//     size_t Size;
+//   } CWrapperFunctionResult;
+#[allow(non_snake_case)]
+#[repr(C)]
+pub union CWrapperFunctionResultDataUnion {
+    pub ValuePtr: *const c_char,
+    pub Value: [c_char; 8],
+}
+#[allow(non_snake_case)]
+#[repr(C)]
+pub struct CWrapperFunctionResult {
+    pub Data: CWrapperFunctionResultDataUnion,
+    pub Size: usize,
+}
+
+#[no_mangle]
+#[inline(never)]
+pub unsafe extern "C" fn llvm_orc_registerEHFrameSectionWrapper(
+    _data: *const c_char,
+    _size: u64,
+) -> CWrapperFunctionResult {
+    let result = CWrapperFunctionResult {
+        Data: CWrapperFunctionResultDataUnion { ValuePtr: null() },
+        Size: 0,
+    };
+    result
+}
+
+#[no_mangle]
+#[inline(never)]
+pub unsafe extern "C" fn llvm_orc_deregisterEHFrameSectionWrapper(
+    _data: *const c_char,
+    _size: u64,
+) -> CWrapperFunctionResult {
+    let result = CWrapperFunctionResult {
+        Data: CWrapperFunctionResultDataUnion { ValuePtr: null() },
+        Size: 0,
+    };
+    result
+}