Disable rtti on arm-32-linux

Author: abadams

master/master.cfg

@@ -947,6 +947,10 @@ def get_llvm_cmake_definitions(builder_type):
         definitions["CMAKE_TOOLCHAIN_FILE"] = get_llvm_toolchains_path("toolchain.linux-arm32.cmake")
         definitions["LLVM_TARGET_ARCH"] = "ARM"
         definitions["LLVM_DEFAULT_TARGET_TRIPLE"] = "arm-linux-gnueabihf"
+        # As of 12/11/2025 LLVM doesn't build on arm-32 with RTTI. We
+        # don't need it, because we're not going to be compiling with
+        # exceptions or building the python bindings anyway.
+        definitions["LLVM_ENABLE_RTTI"] = "OFF"
 
     if builder_type.arch == "x86" and builder_type.bits == 32 and builder_type.os == "linux":
         definitions["CMAKE_FIND_ROOT_PATH"] = "/usr/lib/i386-linux-gnu"