build-sys: enable common warnings

diff --git a/Makefile.am b/Makefile.am
index df8e06d..d3d3a04 100644 (file)
--- a/Makefile.am
+++ b/Makefile.am
@@ -22,7 +22,7 @@ AM_MAKEFLAGS = --no-print-directory
 gummibootlibdir = $(libexecdir)/gummiboot
 
 AM_CPPFLAGS = -include config.h
-AM_CFLAGS =
+AM_CFLAGS = -Wall -Wextra
 AM_LDFLAGS =
 
 EXTRA_DIST = autogen.sh README LICENSE