Enable -Wundef by default. (project-chip#29582)

* Enable -Wundef by default on some platforms.

* Fixes project-chip#29216

* Fix a bunch more errors.

* Restrict -Wundef to where it actually passes CI.

build/config/compiler/BUILD.gn

@@ -253,6 +253,20 @@ config("strict_warnings") {
     cflags += [ "-Wconversion" ]
   }
 
+  # For now we can't enable -Wundef across the board.  Enable it where
+  # we can.  Ideally this would be checking chip_device_platform or so
+  # to be more fine-grained than current_os, but it's not clear that
+  # we can access that here.
+  if (current_os != "android" && current_os != "freertos" &&
+      current_os != "linux" && current_os != "mbed" && current_os != "tizen" &&
+      current_os != "zephyr" &&
+      # cmsis-rtos is OpenIOT
+      current_os != "cmsis-rtos" &&
+      # cyw30739 is one of the Infineon builds
+      current_os != "cyw30739") {
+    cflags += [ "-Wundef" ]
+  }
+
   if (matter_enable_java_compilation) {
     cflags -= [ "-Wshadow" ]
   }

examples/darwin-framework-tool/commands/common/MTRLogging.h

@@ -21,7 +21,7 @@
 
 #import <os/log.h>
 
-#if DEBUG
+#ifdef DEBUG
 #define MTR_LOG_DEBUG(format, ...) os_log(OS_LOG_DEFAULT, format, ##__VA_ARGS__)
 #define MTR_LOG_ERROR(format, ...) os_log(OS_LOG_DEFAULT, format, ##__VA_ARGS__)
 #define MTR_LOG_METHOD_ENTRY() \

examples/platform/linux/BUILD.gn

@@ -94,9 +94,7 @@ source_set("app-main") {
     ]
   }
 
-  if (chip_enable_smoke_co_trigger) {
-    defines += [ "CHIP_DEVICE_CONFIG_ENABLE_SMOKE_CO_TRIGGER=1" ]
-  }
+  defines += [ "CHIP_DEVICE_CONFIG_ENABLE_SMOKE_CO_TRIGGER=${chip_enable_smoke_co_trigger}" ]
 
   public_configs = [ ":app-main-config" ]
 }

examples/tv-app/tv-common/src/ZCLCallbacks.cpp

@@ -24,6 +24,7 @@
 #include <app-common/zap-generated/ids/Clusters.h>
 #include <app/ConcreteAttributePath.h>
 #include <lib/support/logging/CHIPLogging.h>
+#include <platform/CHIPDeviceConfig.h>
 
 #include "account-login/AccountLoginManager.h"
 #include "application-basic/ApplicationBasicManager.h"

examples/tv-casting-app/tv-casting-common/BUILD.gn

@@ -27,6 +27,8 @@ config("config") {
   ]
 
   cflags = [ "-Wconversion" ]
+
+  defines = [ "CONFIG_USE_SEPARATE_EVENTLOOP=0" ]
 }
 
 chip_data_model("tv-casting-common") {

examples/tv-casting-app/tv-casting-common/include/AppParams.h

@@ -20,6 +20,7 @@
 
 #include <lib/core/Optional.h>
 #include <lib/support/Span.h>
+#include <setup_payload/CHIPAdditionalDataPayloadBuildConfig.h>
 
 /**
  * @brief Parameters passed to the CastingServer at the time of startup (i.e. init call)

src/app/tests/TestDataModelSerialization.cpp

@@ -105,7 +105,7 @@ void TestDataModelSerialization::DumpBuf()
     //
     // Enable this once the TLV pretty printer has been checked in.
     //
-#if ENABLE_TLV_PRINT_OUT
+#if defined(ENABLE_TLV_PRINT_OUT) && ENABLE_TLV_PRINT_OUT
     TLV::Debug::Print(reader);
 #endif
 }

src/include/platform/CHIPDeviceConfig.h

@@ -1419,3 +1419,11 @@
 #ifndef CHIP_DEVICE_CONFIG_ENABLE_NFC
 #define CHIP_DEVICE_CONFIG_ENABLE_NFC 0
 #endif
+
+/**
+ * CHIP_DEVICE_ENABLE_PORT_PARAMS enables command-line parameters to set the
+ * port to use for POSIX example applications.
+ */
+#ifndef CHIP_DEVICE_ENABLE_PORT_PARAMS
+#define CHIP_DEVICE_ENABLE_PORT_PARAMS 0
+#endif // CHIP_DEVICE_ENABLE_PORT_PARAMS

src/inet/InetInterface.cpp

@@ -502,7 +502,7 @@ void CloseIOCTLSocket()
     }
 }
 
-#if __ANDROID__
+#ifdef __ANDROID__
 
 static struct if_nameindex * backport_if_nameindex(void);
 static void backport_if_freenameindex(struct if_nameindex *);
@@ -648,7 +648,7 @@ InterfaceIterator::~InterfaceIterator()
 {
     if (mIntfArray != nullptr)
     {
-#if __ANDROID__
+#ifdef __ANDROID__
         backport_if_freenameindex(mIntfArray);
 #else
         if_freenameindex(mIntfArray);
@@ -666,7 +666,7 @@ bool InterfaceIterator::Next()
 {
     if (mIntfArray == nullptr)
     {
-#if __ANDROID__
+#ifdef __ANDROID__
         mIntfArray = backport_if_nameindex();
 #else
         mIntfArray = if_nameindex();

src/inet/UDPEndPointImplSockets.cpp

@@ -696,7 +696,7 @@ void UDPEndPointImplSockets::HandlePendingIO(System::SocketEvents events)
     }
 }
 
-#if IP_MULTICAST_LOOP || IPV6_MULTICAST_LOOP
+#ifdef IPV6_MULTICAST_LOOP
 static CHIP_ERROR SocketsSetMulticastLoopback(int aSocket, bool aLoopback, int aProtocol, int aOption)
 {
     const unsigned int lValue = static_cast<unsigned int>(aLoopback);
@@ -707,7 +707,7 @@ static CHIP_ERROR SocketsSetMulticastLoopback(int aSocket, bool aLoopback, int a
 
     return CHIP_NO_ERROR;
 }
-#endif // IP_MULTICAST_LOOP || IPV6_MULTICAST_LOOP
+#endif // IPV6_MULTICAST_LOOP
 
 static CHIP_ERROR SocketsSetMulticastLoopback(int aSocket, IPVersion aIPVersion, bool aLoopback)
 {
@@ -721,11 +721,11 @@ static CHIP_ERROR SocketsSetMulticastLoopback(int aSocket, IPVersion aIPVersion,
         lRetval = SocketsSetMulticastLoopback(aSocket, aLoopback, IPPROTO_IPV6, IPV6_MULTICAST_LOOP);
         break;
 
-#if INET_CONFIG_ENABLE_IPV4
+#if INET_CONFIG_ENABLE_IPV4 && defined(IP_MULTICAST_LOOP)
     case kIPVersion_4:
         lRetval = SocketsSetMulticastLoopback(aSocket, aLoopback, IPPROTO_IP, IP_MULTICAST_LOOP);
         break;
-#endif // INET_CONFIG_ENABLE_IPV4
+#endif // INET_CONFIG_ENABLE_IPV4 && defined(IP_MULTICAST_LOOP)
 
     default:
         lRetval = INET_ERROR_WRONG_ADDRESS_TYPE;

src/inet/tests/TestInetAddress.cpp

@@ -23,6 +23,7 @@
  *    a class to store and format IPV4 and IPV6 Internet Protocol addresses.
  *
  */
+#include <lib/core/CHIPConfig.h>
 
 #include <inet/IPAddress.h>
 
@@ -1205,7 +1206,7 @@ void CheckFromSocket(nlTestSuite * inSuite, void * inContext)
 #if CHIP_SYSTEM_CONFIG_USE_LWIP
     (void) inSuite;
     // This test is only supported for non LWIP stack.
-#else // INET_LWIP
+#else // CHIP_SYSTEM_CONFIG_USE_LWIP
     const struct TestContext * lContext       = static_cast<const struct TestContext *>(inContext);
     IPAddressExpandedContextIterator lCurrent = lContext->mIPAddressExpandedContextRange.mBegin;
     IPAddressExpandedContextIterator lEnd     = lContext->mIPAddressExpandedContextRange.mEnd;
@@ -1260,7 +1261,7 @@ void CheckFromSocket(nlTestSuite * inSuite, void * inContext)
 
         ++lCurrent;
     }
-#endif // INET_LWIP
+#endif // CHIP_SYSTEM_CONFIG_USE_LWIP
 }
 
 /**

src/inet/tests/TestInetLayer.cpp

@@ -205,7 +205,7 @@ static void CheckSucceededOrFailed(TestState & aTestState, bool & aOutSucceeded,
 {
     const TransferStats & lStats = aTestState.mStats;
 
-#if DEBUG
+#ifdef DEBUG_TCP_TEST
     printf("%u/%u sent, %u/%u received\n", lStats.mTransmit.mActual, lStats.mTransmit.mExpected, lStats.mReceive.mActual,
            lStats.mReceive.mExpected);
 #endif
@@ -298,7 +298,7 @@ int main(int argc, char * argv[])
 
         CheckSucceededOrFailed(sTestState, lSucceeded, lFailed);
 
-#if DEBUG
+#ifdef DEBUG_TCP_TEST
         // clang-format off
         printf("%s %s number of expected bytes\n",
                ((lSucceeded) ? "successfully" :

src/inet/tests/TestLwIPDNS.cpp

@@ -25,16 +25,17 @@
  */
 
 #include <inet/InetConfig.h>
+#include <lib/core/CHIPConfig.h>
 
 #include <stdint.h>
 #include <string.h>
 
 #include <sys/time.h>
 
-#if INET_LWIP
+#if CHIP_SYSTEM_CONFIG_USE_LWIP
 #include <lwip/dns.h>
 #include <lwip/ip_addr.h>
-#endif // INET_LWIP
+#endif // CHIP_SYSTEM_CONFIG_USE_LWIP
 
 #include <CHIPVersion.h>
 
@@ -54,10 +55,10 @@ static bool HandleNonOptionArgs(const char * progName, int argc, char * const ar
 
 // Globals
 
-#if INET_LWIP
+#if CHIP_SYSTEM_CONFIG_USE_LWIP
 static uint8_t sNumIpAddrs = DNS_MAX_ADDRS_PER_NAME;
 static ip_addr_t sIpAddrs[DNS_MAX_ADDRS_PER_NAME];
-#endif // INET_LWIP
+#endif // CHIP_SYSTEM_CONFIG_USE_LWIP
 
 static const char * sHostname      = nullptr;
 static const char * sDNSServerAddr = nullptr;
@@ -76,7 +77,7 @@ static ArgParser::OptionSet * gToolOptionSets[] =
 };
 // clang-format on
 
-#if INET_LWIP
+#if CHIP_SYSTEM_CONFIG_USE_LWIP
 static void found_multi(const char * aName, ip_addr_t * aIpAddrs, uint8_t aNumIpAddrs, void * callback_arg)
 {
     printf("\tfound_multi response\n");
@@ -205,7 +206,7 @@ static void TestLwIPDNS(void)
         printf("\tdns_gethostbyname_multi: %d (expected : ERR_OK)\n", res);
     }
 }
-#endif // INET_LWIP
+#endif // CHIP_SYSTEM_CONFIG_USE_LWIP
 
 int main(int argc, char * argv[])
 {
@@ -226,11 +227,11 @@ int main(int argc, char * argv[])
 
     InitNetwork();
 
-#if INET_LWIP
+#if CHIP_SYSTEM_CONFIG_USE_LWIP
     TestLwIPDNS();
 #else
-    fprintf(stderr, "Please assert INET_LWIP to use this test.\n");
-#endif // INET_LWIP
+    fprintf(stderr, "Please assert CHIP_SYSTEM_CONFIG_USE_LWIP to use this test.\n");
+#endif // CHIP_SYSTEM_CONFIG_USE_LWIP
 
     ShutdownNetwork();
 

src/lib/support/CHIPArgParser.hpp

@@ -32,6 +32,10 @@
 #include <stdio.h>
 #include <stdlib.h>
 
+#ifndef CHIP_CONFIG_NON_POSIX_LONG_OPT
+#define CHIP_CONFIG_NON_POSIX_LONG_OPT 0
+#endif
+
 namespace chip {
 namespace ArgParser {
 

src/lib/support/Pool.h

@@ -324,9 +324,13 @@ class HeapObjectPool : public internal::Statistics, public internal::PoolCommon<
 #ifdef __clang__
 #if __has_feature(address_sanitizer)
 #define __SANITIZE_ADDRESS__ 1
-#endif
-#endif
-#endif
+#else
+#define __SANITIZE_ADDRESS__ 0
+#endif // __has_feature(address_sanitizer)
+#else
+#define __SANITIZE_ADDRESS__ 0
+#endif // __clang__
+#endif // __SANITIZE_ADDRESS__
 #if __SANITIZE_ADDRESS__
         // Free all remaining objects so that ASAN can catch specific use-after-free cases.
         ReleaseAll();

src/lib/support/UnitTestRegistration.cpp

@@ -32,7 +32,7 @@ typedef struct
 
 static test_suites_t gs_test_suites;
 
-#if __ZEPHYR__
+#ifdef __ZEPHYR__
 inline static bool AlreadyExists(UnitTestTriggerFunction tests)
 {
     for (uint32_t i = 0; i < gs_test_suites.num_test_suites; ++i)
@@ -50,7 +50,7 @@ CHIP_ERROR RegisterUnitTests(UnitTestTriggerFunction tests)
         return CHIP_ERROR_NO_MEMORY;
     }
 
-#if __ZEPHYR__
+#ifdef __ZEPHYR__
     // Not sure yet if it's a Zephyr bug or misconfiguration, but global constructors are called
     // twice on native_posix platform - by libc and by Zephyr's main thread initialization code.
     // This makes sure tests are not run twice for that reason.

src/platform/tests/TestCHIPoBLEStackMgr.h

@@ -23,6 +23,8 @@
 
 #pragma once
 
+#include <platform/CHIPDeviceConfig.h>
+
 #if CHIP_DEVICE_CONFIG_ENABLE_CHIPOBLE
 int TestCHIPoBLEStackManager();
 #endif // CHIP_DEVICE_CONFIG_ENABLE_CHIPOBLE

src/platform/tests/TestCHIPoBLEStackMgrDriver.cpp

@@ -16,6 +16,7 @@
  */
 
 #include "TestCHIPoBLEStackMgr.h"
+#include <platform/CHIPDeviceConfig.h>
 #include <stdlib.h>
 
 int main(int argc, char * argv[])

src/system/SystemClock.cpp

@@ -73,7 +73,7 @@ ClockBase * gClockBase = &gClockImpl;
 
 #if HAVE_CLOCK_GETTIME
 
-#if HAVE_DECL_CLOCK_BOOTTIME
+#if defined(HAVE_DECL_CLOCK_BOOTTIME) && HAVE_DECL_CLOCK_BOOTTIME
 // CLOCK_BOOTTIME is a Linux-specific option to clock_gettime for a clock which compensates for system sleep.
 #define MONOTONIC_CLOCK_ID CLOCK_BOOTTIME
 #define MONOTONIC_RAW_CLOCK_ID CLOCK_MONOTONIC_RAW

src/system/SystemPacketBufferInternal.h

@@ -27,6 +27,10 @@
 #include <lib/core/CHIPConfig.h>
 #include <system/SystemConfig.h>
 
+#if CHIP_SYSTEM_CONFIG_USE_LWIP
+#include <lwip/opt.h>
+#endif // CHIP_SYSTEM_CONFIG_USE_LWIP
+
 /**
  * CHIP_SYSTEM_PACKETBUFFER_FROM_CHIP_HEAP
  *