Merge 9a5d162ebf into bc53f8293f

mlx/backend/metal/device.cpp

@@ -3,6 +3,7 @@
 #include <cstdlib>
 #include <filesystem>
 #include <sstream>
+#include <dlfcn.h>
 
 #define NS_PRIVATE_IMPLEMENTATION
 #define CA_PRIVATE_IMPLEMENTATION
@@ -35,6 +36,16 @@ auto get_metal_version() {
   return metal_version_;
 }
 
+static fs::path get_dylib_directory() {
+  Dl_info info{};
+
+  if (dladdr(reinterpret_cast<void const*>(default_mtllib_path), &info) && info.dli_fname) {
+    fs::path libFile(info.dli_fname);
+    return libFile.parent_path();
+  }
+  return {};
+}
+
 auto load_device() {
   auto devices = MTL::CopyAllDevices();
   auto device = static_cast<MTL::Device*>(devices->object(0))
@@ -115,7 +126,7 @@ std::pair<MTL::Library*, NS::Error*> load_swiftpm_library(
 }
 
 MTL::Library* load_default_library(MTL::Device* device) {
-  NS::Error* error[4];
+  NS::Error* error[5];
   MTL::Library* lib;
   // First try the colocated mlx.metallib
   std::tie(lib, error[0]) = load_colocated_library(device, "mlx");
@@ -136,10 +147,25 @@ MTL::Library* load_default_library(MTL::Device* device) {
 
   // Finally try default_mtllib_path
   std::tie(lib, error[3]) = load_library_from_path(device, default_mtllib_path);
+  if (lib) {
+    return lib;
+  }
+
+  {
+    auto dir = get_dylib_directory();
+    if (!dir.empty()) {
+      auto dylib_path = (dir / default_mtllib_path).string();
+      std::tie(lib, error[4]) = load_library_from_path(device, dylib_path.c_str());
+      if (lib) {
+        return lib;
+      }
+    }
+  }
+
   if (!lib) {
     std::ostringstream msg;
     msg << "Failed to load the default metallib. ";
-    for (int i = 0; i < 4; i++) {
+    for (int i = 0; i < 5; i++) {
       if (error[i] != nullptr) {
         msg << error[i]->localizedDescription()->utf8String() << " ";
       }