fix enzyme library used for build

Author: tgymnich

src/bootstrap/src/core/build_steps/llvm.rs

@@ -894,7 +894,7 @@ impl Step for Enzyme {
             .profile(profile)
             .env("LLVM_CONFIG_REAL", &llvm_config)
             .define("LLVM_ENABLE_ASSERTIONS", "ON")
-            .define("ENZYME_EXTERNAL_SHARED_LIB", "OFF")
+            .define("ENZYME_EXTERNAL_SHARED_LIB", "ON")
             .define("LLVM_DIR", &llvm_cmake_dir);
 
         cfg.build();

src/bootstrap/src/core/builder.rs

@@ -1419,7 +1419,7 @@ impl<'a> Builder<'a> {
         // https://rust-lang.zulipchat.com/#narrow/stream/182449-t-compiler.2Fhelp/topic/.E2.9C.94.20link.20new.20library.20into.20stage1.2Frustc
         if self.config.llvm_enzyme {
             rustflags.arg("-l");
-            rustflags.arg("LLVMEnzyme-17");
+            rustflags.arg("Enzyme-17");
         }
 
         let use_new_symbol_mangling = match self.config.rust_new_symbol_mangling {