1 files changed, 11 insertions, 0 deletions
diff --git a/tasks/mruby_build.rake b/tasks/mruby_build.rake
index b7efa96b9..3c0a67179 100644
--- a/tasks/mruby_build.rake
+++ b/tasks/mruby_build.rake
@@ -81,6 +81,7 @@ module MRuby
         @bins = %w(mrbc)
         @gems, @libmruby = MRuby::Gem::List.new, []
         @build_mrbtest_lib_only = false
+        @cxx_abi_enabled = false
 
         MRuby.targets[@name] = self
       end
@@ -94,6 +95,16 @@ module MRuby
       @mrbc.compile_options += ' -g'
     end
 
+    def cxx_abi_enabled?
+      @cxx_abi_enabled
+    end
+
+    def enable_cxx_abi
+      return if @cxx_abi_enabled
+      compilers.each { |c| c.defines += %w(MRB_ENABLE_CXX_EXCEPTION) }
+      @cxx_abi_enabled = true
+    end
+
     def toolchain(name)
       tc = Toolchain.toolchains[name.to_s]
       fail "Unknown #{name} toolchain" unless tc