From 2dee0609685a0a01d7fd65e6a804363c3514087c Mon Sep 17 00:00:00 2001
From: Linus Torvalds <torvalds@ppc970.osdl.org>
Date: Wed, 20 Apr 2005 13:00:08 -0700
Subject: [PATCH] Improve build: add <unistd.h> and use -O2 instead of -O3

(Nobody should use -O3. It just makes bad inlining decisions).
---
 Makefile | 2 +-
 cache.h  | 1 +
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/Makefile b/Makefile
index cd299f850..a244b27ac 100644
--- a/Makefile
+++ b/Makefile
@@ -7,7 +7,7 @@
 # BREAK YOUR LOCAL DIFFS! show-diff and anything using it will likely randomly
 # break unless your underlying filesystem supports those sub-second times
 # (my ext3 doesn't).
-CFLAGS=-g -O3 -Wall
+CFLAGS=-g -O2 -Wall
 
 CC=gcc
 AR=ar
diff --git a/cache.h b/cache.h
index eab355da5..a67b79e97 100644
--- a/cache.h
+++ b/cache.h
@@ -1,6 +1,7 @@
 #ifndef CACHE_H
 #define CACHE_H
 
+#include <unistd.h>
 #include <stdio.h>
 #include <sys/stat.h>
 #include <fcntl.h>
-- 
2.26.2