From 3806106b1cd55e0ebf071dc41eee727e96111845 Mon Sep 17 00:00:00 2001
From: Graham Edgecombe <gpe@grahamedgecombe.com>
Date: Fri, 29 Dec 2017 17:18:36 +0000
Subject: [PATCH] Replace -Os with -O2

-Os seems to optimize away the UART code. I'm not sure why, as all the
pointers are volatile.
---
 Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Makefile b/Makefile
index 871a04e..a1ec0cb 100644
--- a/Makefile
+++ b/Makefile
@@ -23,7 +23,7 @@ ASFLAGS  = -march=rv32i -mabi=ilp32
 LD       = $(TARGET)-gcc
 LDFLAGS  = -march=rv32i -mabi=ilp32 -Wl,-Tprogmem.lds -ffreestanding -nostartfiles
 CC       = $(TARGET)-gcc
-CFLAGS   = -march=rv32i -mabi=ilp32 -Wall -Wextra -pedantic -DFREQ=$(FREQ_PLL)000000 -Os
+CFLAGS   = -march=rv32i -mabi=ilp32 -Wall -Wextra -pedantic -DFREQ=$(FREQ_PLL)000000 -O2
 OBJCOPY  = $(TARGET)-objcopy
 
 .PHONY: all clean syntax time stat flash