Disable rtti

CMakeLists.txt

@@ -1,5 +1,5 @@
 cmake_minimum_required(VERSION 3.22)
-project(llvm-essential
+project(compiler-essential
         VERSION 1.0.0)
 
 set(CMAKE_EXPORT_COMPILE_COMMANDS ON)

src/smallcc/CMakeLists.txt

@@ -1,7 +1,8 @@
 
 set(CXX_STANDARD c++17)
-set(CMAKE_CXX_FLAGS "-fno-common")
+set(CMAKE_CXX_FLAGS " ${CMAKE_CXX_FLAGS} -fno-common")
 
 add_executable(smallcc smallcc-main.cpp)
 
-target_link_libraries(smallcc PRIVATE LLVMSupport)
+# NOTE: it's bery important to disable 
+target_link_libraries(smallcc PRIVATE LLVMCore LLVMSupport)

src/smallcc/smallcc-main.cpp

@@ -14,7 +14,7 @@ std::string getInputFile(llvm::StringRef filename) {
   llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> fileOrErr =
       llvm::MemoryBuffer::getFileOrSTDIN(filename);
   if (std::error_code ec = fileOrErr.getError())
-    llvm::report_fatal_error("Could not open input file: "+ filename);
+    llvm::report_fatal_error("Could not open input file: " + filename);
   return fileOrErr.get()->getBuffer().str();
 }
 

src/support/CMakeLists.txt

@@ -1,3 +1,3 @@
 add_executable(commandline commandline.cpp)
 
-target_link_libraries(commandline LLVMCore LLVMSupport)
+target_link_libraries(commandline PRIVATE LLVMCore LLVMSupport)