diff --git a/llvm/lib/Debuginfod/CMakeLists.txt b/llvm/lib/Debuginfod/CMakeLists.txt
--- a/llvm/lib/Debuginfod/CMakeLists.txt
+++ b/llvm/lib/Debuginfod/CMakeLists.txt
@@ -13,6 +13,13 @@
   set(imported_libs ${imported_libs} ${LLVM_PTHREAD_LIB})
 endif()
 
+# cpp-httplib by default builds with exceptions unless they are disabled using
+# a preprocessor macro.
+if (LLVM_ENABLE_HTTPLIB)
+  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -DCPPHTTPLIB_NO_EXCEPTIONS")
+  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DCPPHTTPLIB_NO_EXCEPTIONS")
+endif()
+
 # Note: This isn't a component, since that could potentially add a libcurl
 # dependency to libLLVM.
 add_llvm_library(LLVMDebuginfod