The released source uses std::unordered_set without including its header.
--- a/src/comgr-compiler.cpp
+++ b/src/comgr-compiler.cpp
@@ -78,5 +78,6 @@
 
 #include <csignal>
 #include <sstream>
+#include <unordered_set>
 
 LLD_HAS_DRIVER(elf)
--- a/src/hotswap/rewriter/CMakeLists.txt
+++ b/src/hotswap/rewriter/CMakeLists.txt
@@ -68,4 +68,8 @@ llvm_map_components_to_libnames(hotswap_rewriter_llvm_libs
   AMDGPUDisassembler
   AMDGPUInfo)
 
+if(LLVM_LINK_LLVM_DYLIB)
+  set(hotswap_rewriter_llvm_libs LLVM)
+endif()
+
 target_link_libraries(hotswap-rewriter PUBLIC ${hotswap_rewriter_llvm_libs})