[PATCH] v4l-utils: add missing <cstdlib> includes

[Denys Fedoryshchenko <denys.f@collabora.com>]

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>
---
 utils/cec-compliance/cec-compliance.h     | 1 +
 utils/cec-compliance/cec-test-fuzzing.cpp | 1 +
 utils/cec-ctl/cec-ctl.cpp                 | 1 +
 utils/cec-follower/cec-tuner.cpp          | 1 +
 utils/common/cv4l-helpers.h               | 1 +
 utils/edid-decode/calc-ovt.cpp            | 1 +
 utils/edid-decode/edid-decode.cpp         | 1 +
 utils/rds-ctl/rds-ctl.cpp                 | 1 +
 utils/v4l2-compliance/v4l2-compliance.h   | 1 +
 utils/v4l2-ctl/v4l2-ctl.h                 | 1 +
 utils/v4l2-dbg/v4l2-dbg.cpp               | 1 +
 11 files changed, 11 insertions(+)

diff --git a/utils/cec-compliance/cec-compliance.h b/utils/cec-compliance/cec-compliance.h
index 8cb316f..93606b2 100644
--- 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
diff --git a/utils/cec-compliance/cec-test-fuzzing.cpp b/utils/cec-compliance/cec-test-fuzzing.cpp
index 0fe1d5a..0f550d4 100644
--- 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)
 {
diff --git a/utils/cec-ctl/cec-ctl.cpp b/utils/cec-ctl/cec-ctl.cpp
index 5638ca8..8209466 100644
--- 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;
diff --git a/utils/cec-follower/cec-tuner.cpp b/utils/cec-follower/cec-tuner.cpp
index a2cb6ca..b0a8870 100644
--- 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
diff --git a/utils/common/cv4l-helpers.h b/utils/common/cv4l-helpers.h
index ab9c64b..ba47e26 100644
--- 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>
 
diff --git a/utils/edid-decode/calc-ovt.cpp b/utils/edid-decode/calc-ovt.cpp
index 91472d8..2528ac9 100644
--- 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
diff --git a/utils/edid-decode/edid-decode.cpp b/utils/edid-decode/edid-decode.cpp
index 4505cf3..ca2e8dc 100644
--- 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)
diff --git a/utils/rds-ctl/rds-ctl.cpp b/utils/rds-ctl/rds-ctl.cpp
index bff9d04..de4ac69 100644
--- 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>;
diff --git a/utils/v4l2-compliance/v4l2-compliance.h b/utils/v4l2-compliance/v4l2-compliance.h
index b43c581..7ca4744 100644
--- 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>
diff --git a/utils/v4l2-ctl/v4l2-ctl.h b/utils/v4l2-ctl/v4l2-ctl.h
index ae6f43f..c4d955d 100644
--- 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 <stdlib.h>
 #include <v4l-getsubopt.h>
 
diff --git a/utils/v4l2-dbg/v4l2-dbg.cpp b/utils/v4l2-dbg/v4l2-dbg.cpp
index 6c8fa69..5c92bfb 100644
--- 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;
-- 
2.53.0