diff --git a/src/Makefile b/src/Makefile
index cbfd441..fe78fe8 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -26,8 +26,11 @@ RSCFLAGS = --emit obj --crate-type lib \
 	-L crate="${PWD}/../rustlib/${ARCH}/src/" \
 	-C code-model=large \
 	-C relocation-model=static \
-	-C embed-bitcode=no \
-	-C opt-level=z
+	-C embed-bitcode=no
+
+ifdef release
+	RSCFLAGS := -O
+endif
 
 ifeq (${ARCH},x86_64)
 	RSCFLAGS := ${RSCFLAGS} -C target-feature=-sse,-avx
diff --git a/src/metaverse.lds b/src/metaverse.lds
index 7bb371b..c1e7568 100644
--- a/src/metaverse.lds
+++ b/src/metaverse.lds
@@ -62,8 +62,48 @@ SECTIONS {
     {}
     .igot.plt :
     {}
+    .tbss :
+    {
+        *(.tbss)
+    }
+    .tdata :
+    {
+        *(.tdata)
+    }
+    .debug_line :
+    {
+        *(.debug_line)
+    }
+    .debug_abbrev :
+    {
+        *(.debug_abbrev)
+    }
+    .debug_info :
+    {
+        *(.debug_info)
+    }
+    .debug_str :
+    {
+        *(.debug_str)
+    }
+    .debug_aranges :
+    {
+        *(.debug_aranges)
+    }
+    .debug_ranges :
+    {
+        *(.debug_ranges)
+    }
+    .debug_pubnames :
+    {
+        *(.debug_pubnames)
+    }
+    .debug_pubtypes :
+    {
+        *(.debug_pubtypes)
+    }
     .kend :
     {
         *(.kend)
     }
-}
\ No newline at end of file
+}