Improve build: add <unistd.h> and use -O2 instead of -O3

diff --git a/cache.h b/cache.h
index eab355da5d2f6595053f28f0cca61181ac314ee9..a67b79e97f9db01bc270a07f3be9cda610845128 100644 (file)
--- 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>