extconf.rb in d_heap-0.6.0

- old
+ new

@@ -6,13 +6,12 @@
 # $CFLAGS << " -D__D_HEAP_DEBUG" if /darwin/ =~ RUBY_PLATFORM
 # $CFLAGS << " -debug inline-debug-info "
 # $CFLAGS << " -g -ginline-points "
 # $CFLAGS << " -fno-omit-frame-pointer "
 
-# CONFIG["debugflags"] << " -ggdb3 -gstatement-frontiers -ginline-points "
-CONFIG["optflags"]  << " -O3 "
-CONFIG["optflags"]  << " -fno-omit-frame-pointer "
-CONFIG["warnflags"] << " -Werror"
+if enable_config("debug")
+  CONFIG["warnflags"] << " -Werror -Wpedantic "
+end
 
 have_func "rb_gc_mark_movable" # since ruby-2.7
 
 check_sizeof("long")
 check_sizeof("unsigned long long")