Turn on C99 and extra warnings

diff --git a/Makefile b/Makefile
index bafcc26d2515b9efa0ad785456e76d7db800ab19..0208b08b3821b147b01921ed1da37fff3e974309 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,7 @@
 # Makefile for the nwho toolkit
 
 VERSION=1.12
-CFLAGS=-O2 -Wall -Wno-parentheses -DVERSION=$(VERSION)
+CFLAGS=-O2 -Wall -Wextra -Wno-parentheses -DVERSION=$(VERSION) -std=gnu99
 LDFLAGS=-s
 ROOT=/
 REL=nwho-$(VERSION)