--- subtle-0.11.3224-xi/Rakefile
+++ subtle-0.11.3224-xi/Rakefile
@@ -63,9 +63,9 @@
   "hdrdir"     => "",
   "archdir"    => "",
   "revision"   => "3224", #< Latest stable
-  "cflags"     => "-Wall -Werror -Wpointer-arith -Wstrict-prototypes -Wunused -Wshadow -std=gnu99",
+  "cflags"     => "#{ENV['CFLAGS']} -Wall -Wpointer-arith -Wstrict-prototypes -Wunused -Wshadow -std=gnu99",
   "cpppath"    => "-I. -I$(builddir) -Isrc -Isrc/shared -Isrc/subtle -idirafter$(hdrdir) -idirafter$(archdir)",
-  "ldflags"    => "-L$(libdir) $(rpath) $(LIBS) -l$(RUBY_SO_NAME)",
+  "ldflags"    => "#{ENV['LDFLAGS']} -L$(libdir) $(rpath) $(LIBS) -l$(RUBY_SO_NAME)",
   "extflags"   => "$(LDFLAGS) $(rpath) $(LIBS) -l$(RUBY_SO_NAME)",
   "rpath"      => "-L$(libdir) -Wl,-rpath=$(libdir)",
   "checksums"  => []
@@ -276,7 +276,7 @@
 
     # Debug
     if "yes" == @options["debug"]
-      @options["cflags"] << " -g -DDEBUG"
+      @options["cflags"] << " -DDEBUG"
     else
       @options["cflags"] << " -DNDEBUG"
     end