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-rw-r--r--Makefile4
-rw-r--r--tests/extra-terminating-null.c2
-rw-r--r--tests/get_alias.c2
-rw-r--r--tests/path_offset_aliases.c2
-rw-r--r--tests/value-labels.c4
5 files changed, 8 insertions, 6 deletions
diff --git a/Makefile b/Makefile
index d7549b2..b49aebb 100644
--- a/Makefile
+++ b/Makefile
@@ -16,7 +16,9 @@ LOCAL_VERSION =
CONFIG_LOCALVERSION =
CPPFLAGS = -I libfdt
-CFLAGS = -Wall -g -Os -fPIC -Wpointer-arith -Wcast-qual
+WARNINGS = -Werror -Wall -Wpointer-arith -Wcast-qual -Wnested-externs \
+ -Wstrict-prototypes -Wmissing-prototypes
+CFLAGS = -g -Os -fPIC -Werror $(WARNINGS)
BISON = bison
LEX = flex
diff --git a/tests/extra-terminating-null.c b/tests/extra-terminating-null.c
index bb71b1a..8a2043f 100644
--- a/tests/extra-terminating-null.c
+++ b/tests/extra-terminating-null.c
@@ -28,7 +28,7 @@
#include "tests.h"
#include "testdata.h"
-void check_extranull(void *fdt, const char *prop, const char *str, int numnulls)
+static void check_extranull(void *fdt, const char *prop, const char *str, int numnulls)
{
int len = strlen(str);
char checkbuf[len+numnulls];
diff --git a/tests/get_alias.c b/tests/get_alias.c
index 8eeaee4..1e0faf4 100644
--- a/tests/get_alias.c
+++ b/tests/get_alias.c
@@ -29,7 +29,7 @@
#include "tests.h"
#include "testdata.h"
-void check_alias(void *fdt, const char *path, const char *alias)
+static void check_alias(void *fdt, const char *path, const char *alias)
{
const char *aliaspath;
diff --git a/tests/path_offset_aliases.c b/tests/path_offset_aliases.c
index 191edd2..3682da4 100644
--- a/tests/path_offset_aliases.c
+++ b/tests/path_offset_aliases.c
@@ -29,7 +29,7 @@
#include "tests.h"
#include "testdata.h"
-void check_alias(void *fdt, const char *full_path, const char *alias_path)
+static void check_alias(void *fdt, const char *full_path, const char *alias_path)
{
int offset, offset_a;
diff --git a/tests/value-labels.c b/tests/value-labels.c
index c5aea8f..abe2721 100644
--- a/tests/value-labels.c
+++ b/tests/value-labels.c
@@ -59,8 +59,8 @@ struct val_label labels3[] = {
{ "end3", -1 },
};
-void check_prop_labels(void *sohandle, void *fdt, const char *name,
- const struct val_label* labels, int n)
+static void check_prop_labels(void *sohandle, void *fdt, const char *name,
+ const struct val_label* labels, int n)
{
const struct fdt_property *prop;
const char *p;