From fa05ca502293f65e25930e6321c82eeaccf382ab Mon Sep 17 00:00:00 2001
From: Denys Fedoryshchenko <denys.f@collabora.com>
Date: Wed, 2 Sep 2026 19:13:26 +0300
Subject: [PATCH v4l-utils] v4l-utils: add missing <cstdlib> includes

Several utilities call std::exit() but include only <stdlib.h>, or no
standard library header at all. This relies on transitive includes to make
std::exit() available.

The issue can be reproduced with libc++ by configuring with:

  CXX=clang++ \
    CXXFLAGS="-stdlib=libc++ -D_LIBCPP_REMOVE_TRANSITIVE_INCLUDES=1" \
    meson setup build
  ninja -C build

Include <cstdlib> for std::exit(). cec-test-fuzzing.cpp calls random() and
cec-tuner.cpp calls abs() unqualified, so include <stdlib.h> there.

Signed-off-by: Denys Fedoryshchenko <denys.f@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
--- a/utils/cec-compliance/cec-compliance.h
+++ b/utils/cec-compliance/cec-compliance.h
@@ -13,6 +13,7 @@
 
 #include <cec-info.h>
 
+#include <cstdlib>
 #include <vector>
 
 #define TAG_AUDIO_RATE_CONTROL		1
--- a/utils/cec-compliance/cec-test-fuzzing.cpp
+++ b/utils/cec-compliance/cec-test-fuzzing.cpp
@@ -9,6 +9,7 @@
 #include <sys/ioctl.h>
 
 #include "cec-compliance.h"
+#include <stdlib.h>
 
 int testFuzzing(struct node &node, unsigned me, unsigned la)
 {
--- a/utils/cec-ctl/cec-ctl.cpp
+++ b/utils/cec-ctl/cec-ctl.cpp
@@ -27,6 +27,7 @@
 
 #include "cec-ctl.h"
 #include "compiler.h"
+#include <cstdlib>
 
 static struct timespec start_monotonic;
 static struct timeval start_timeofday;
--- a/utils/cec-follower/cec-tuner.cpp
+++ b/utils/cec-follower/cec-tuner.cpp
@@ -10,6 +10,7 @@
 
 #include "cec-follower.h"
 #include "compiler.h"
+#include <stdlib.h>
 
 #define NUM_ANALOG_FREQS 3
 #define NUM_DIGITAL_CHANS 3
--- a/utils/common/cv4l-helpers.h
+++ b/utils/common/cv4l-helpers.h
@@ -9,6 +9,7 @@
 #ifndef _CV4L_HELPERS_H_
 #define _CV4L_HELPERS_H_
 
+#include <cstdlib>
 #include <limits.h>
 #include <v4l-helpers.h>
 
--- a/utils/edid-decode/calc-ovt.cpp
+++ b/utils/edid-decode/calc-ovt.cpp
@@ -12,6 +12,7 @@
 #include <numeric>
 
 #include "edid-decode.h"
+#include <cstdlib>
 
 #define MinVblankDuration 460
 #define MinVblankLines 20
--- a/utils/edid-decode/edid-decode.cpp
+++ b/utils/edid-decode/edid-decode.cpp
@@ -17,6 +17,7 @@
 #include <unistd.h>
 
 #include "edid-decode.h"
+#include <cstdlib>
 
 #define STR(x) #x
 #define STRING(x) STR(x)
--- a/utils/rds-ctl/rds-ctl.cpp
+++ b/utils/rds-ctl/rds-ctl.cpp
@@ -28,6 +28,7 @@
 #include <v4l2-info.h>
 #include <libv4l2rds.h>
 #include <v4l-getsubopt.h>
+#include <cstdlib>
 
 using dev_vec = std::vector<std::string>;
 using dev_map = std::map<std::string, std::string>;
--- a/utils/v4l2-compliance/v4l2-compliance.h
+++ b/utils/v4l2-compliance/v4l2-compliance.h
@@ -25,6 +25,7 @@
 #include <set>
 #include <string>
 #include <cstdint>
+#include <cstdlib>
 
 #include <linux/videodev2.h>
 #include <linux/v4l2-subdev.h>
--- a/utils/v4l2-ctl/v4l2-ctl.h
+++ b/utils/v4l2-ctl/v4l2-ctl.h
@@ -4,6 +4,7 @@
 #include <cstdint>
 #include <linux/videodev2.h>
 #include <linux/v4l2-subdev.h>
+#include <cstdlib>
 #include <v4l-getsubopt.h>

 
--- a/utils/v4l2-dbg/v4l2-dbg.cpp
+++ b/utils/v4l2-dbg/v4l2-dbg.cpp
@@ -42,6 +42,7 @@
 #include "v4l2-dbg-ac97.h"
 #include "v4l2-dbg-tvp5150.h"
 #include "v4l2-dbg-micron.h"
+#include <cstdlib>
 
 struct board_list {
 	const char *name;
-- 
2.55.0