Deeper DEV flags, added -Wextra to both. Extensions use the build flags.

lib/bin/compile.rb

@@ -158,6 +158,11 @@ def compile_files
       puts cmd if $VERBOSE
       system cmd
 
+      unless $?.success?
+        puts "\n\n ** Compiling failed. Aborting.\n\n"
+        exit 1
+      end
+
       @objects << out
     end
   end

rakelib/extensions.rake

@@ -18,11 +18,12 @@ task :extensions => %w[
 #
 # Ask the VM to build an extension from source.
 #
-def compile_extension(path, flags = nil, extra_flags = nil)
-  flags ||= "-d -p -C,-ggdb3 -C,-O0 -I#{Dir.pwd}/vm/subtend"
-  command = "./bin/rbx compile #{flags} #{extra_flags} #{path}"
+def compile_extension(path, flags = "-d -p -I#{Dir.pwd}/vm/subtend")
+  cflags = Object.const_get(:FLAGS).reject {|f| f == "-Wno-deprecated" }
 
-  puts "Executing `#{command}`" if $verbose
+  cflags.each {|flag| flags << " -C,#{flag}" }
+
+  command = "./bin/rbx compile #{flags} #{path}"
 
   sh command
 end
@@ -34,8 +35,6 @@ namespace :extension do
     Dir["lib/ext/**/*.{o,#{$dlext}}"].each do |f|
       rm_f f, :verbose => $verbose
     end
-
-#    FileList["lib/ext/**/*.o"].each {|f| rm f, :verbose => $verbose }
   end
 
   desc "Build the readline extension"

rakelib/vm.rake

@@ -109,17 +109,17 @@ if LLVM_STYLE == "Release"
   OPTIONS[LLVM_A] << " --enable-optimized"
 end
 
-INCLUDES    = EX_INC + %w[/usr/local/include vm/test/cxxtest vm .]
+INCLUDES      = EX_INC + %w[/usr/local/include vm/test/cxxtest vm .]
 INCLUDES.map! { |f| "-I#{f}" }
-FLAGS       = %w[
-  -pipe
-  -Wall -Werror -Wno-deprecated
-  -ggdb -gdwarf-2
-  -fno-strict-aliasing
-]
 
-unless ENV["DEV"]
-  FLAGS << "-O2"
+# Build options
+FLAGS         = %w[ -pipe -Wall -Wextra -Wno-deprecated ]
+
+# Debugging support &c.
+if ENV["DEV"]
+  FLAGS.concat %w[ -Werror -ggdb3 -O0 -fno-inline]
+else
+  FLAGS.concat %w[ -O2 ]
 end
 
 CC          = ENV['CC'] || "gcc"