update C++ standard (c++11 -> c++14)

- temporarily disable snapdragon builds until toolchain is updated

.ci/Jenkinsfile-compile

@@ -50,7 +50,7 @@ pipeline {
           ]
 
           def docker_builds = [
-            armhf_builds, base_builds, nuttx_builds_archive, snapdragon_builds
+            armhf_builds, base_builds, nuttx_builds_archive//, snapdragon_builds
           ]
 
           for (def build_type = 0; build_type < docker_builds.size(); build_type++) {

.vscode/settings.json

@@ -56,8 +56,8 @@
         "cortex-debug.enableTelemetry": false,
         "C_Cpp.clang_format_fallbackStyle": "none",
         "C_Cpp.configurationWarnings": "Disabled",
-        "C_Cpp.default.cppStandard": "c++11",
-        "C_Cpp.default.cStandard": "c99",
+        "C_Cpp.default.cppStandard": "c++14",
+        "C_Cpp.default.cStandard": "c11",
         "C_Cpp.default.intelliSenseMode": "gcc-x64",
         "C_Cpp.errorSquiggles": "Disabled",
         "C_Cpp.formatting": "Disabled",

.ycm_extra_conf.py

@@ -51,8 +51,8 @@ flags = [
 # headers will be compiled as C headers. You don't want that so ALWAYS specify
 # a "-std=<something>".
 # For a C project, you would set this to something like 'c99' instead of
-# 'c++11'.
-'-std=c++11',
+# 'c++14'.
+'-std=c++14',
 # ...and the same thing goes for the magic -x option which specifies the
 # language that the files to be compiled are written in. This is mostly
 # relevant for c++ headers.

CMakeLists.txt

@@ -191,7 +191,7 @@ project(px4 CXX C ASM)
 
 set(package-contact "px4users@googlegroups.com")
 
-set(CMAKE_CXX_STANDARD 11)
+set(CMAKE_CXX_STANDARD 14)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 set(CMAKE_C_STANDARD 11)
 set(CMAKE_C_STANDARD_REQUIRED ON)

Makefile

@@ -437,7 +437,7 @@ clang-tidy-quiet: px4_sitl_default-clang
 # TODO: Fix cppcheck errors then try --enable=warning,performance,portability,style,unusedFunction or --enable=all
 cppcheck: px4_sitl_default
 	@mkdir -p "$(SRC_DIR)"/build/cppcheck
-	@cppcheck -i"$(SRC_DIR)"/src/examples --enable=performance --std=c++11 --std=c99 --std=posix --project="$(SRC_DIR)"/build/px4_sitl_default/compile_commands.json --xml-version=2 2> "$(SRC_DIR)"/build/cppcheck/cppcheck-result.xml > /dev/null
+	@cppcheck -i"$(SRC_DIR)"/src/examples --enable=performance --std=c++14 --std=c99 --std=posix --project="$(SRC_DIR)"/build/px4_sitl_default/compile_commands.json --xml-version=2 2> "$(SRC_DIR)"/build/cppcheck/cppcheck-result.xml > /dev/null
 	@cppcheck-htmlreport --source-encoding=ascii --file="$(SRC_DIR)"/build/cppcheck/cppcheck-result.xml --report-dir="$(SRC_DIR)"/build/cppcheck --source-dir="$(SRC_DIR)"/src/
 
 shellcheck_all:

msg/templates/urtps/microRTPS_agent_CMakeLists.txt.em

@@ -38,15 +38,15 @@ project(micrortps_agent)
 find_package(fastrtps REQUIRED)
 find_package(fastcdr REQUIRED)
 
-# Set C++11
+# Set C++14
 include(CheckCXXCompilerFlag)
 if(CMAKE_COMPILER_IS_GNUCXX OR CMAKE_COMPILER_IS_CLANG OR
     CMAKE_CXX_COMPILER_ID MATCHES "Clang")
-    check_cxx_compiler_flag(--std=c++11 SUPPORTS_CXX11)
+    check_cxx_compiler_flag(--std=c++14 SUPPORTS_CXX14)
     if(SUPPORTS_CXX11)
-        add_compile_options(--std=c++11)
+        add_compile_options(--std=c++14)
     else()
-        message(FATAL_ERROR "Compiler doesn't support C++11")
+        message(FATAL_ERROR "Compiler doesn't support C++14")
     endif()
 endif()
 

platforms/nuttx/NuttX/Make.defs.in

@@ -109,7 +109,7 @@ CFLAGS = $(ARCHINCLUDES) \
 	-Wno-type-limits
 
 CXXFLAGS = $(ARCHXXINCLUDES) \
-	-std=gnu++11 \
+	-std=c++14 \
 	-nostdinc++ \
 	${CMAKE_CXX_FLAGS} \
 	$(FLAGS) \
@@ -117,6 +117,7 @@ CXXFLAGS = $(ARCHXXINCLUDES) \
 	-fno-builtin \
 	-fno-exceptions \
 	-fno-rtti \
+	-fno-sized-deallocation \
 	-nostdinc++ \
 	-Wno-double-promotion \
 	-Wno-missing-declarations

platforms/nuttx/cmake/px4_impl_os.cmake

@@ -67,6 +67,8 @@ function(px4_os_add_flags)
 	# prevent using the toolchain's std c++ library
 	add_compile_options($<$<COMPILE_LANGUAGE:CXX>:-nostdinc++>)
 
+	add_compile_options($<$<COMPILE_LANGUAGE:CXX>:-fno-sized-deallocation>)
+
 	add_definitions(
 		-D__PX4_NUTTX
 

src/drivers/uavcan/uavcan_drivers/kinetis/driver/CMakeLists.txt

@@ -2,6 +2,7 @@ include_directories(
     ./include
     )
 
+add_compile_options(-Wno-unused-variable)
 add_library(uavcan_kinetis_driver STATIC
     ./src/uc_kinetis_flexcan.cpp
     ./src/uc_kinetis_clock.cpp

src/drivers/uavcan/uavcan_drivers/kinetis/driver/src/uc_kinetis_flexcan.cpp

@@ -693,7 +693,7 @@ void CanIface::handleRxInterrupt(uavcan::uint32_t rx_iflags, uavcan::uint64_t ut
 		frame.data[7] = rf.data.b7;
 
 		volatile uavcan::uint32_t idhit = can_->RXFIR;
-		UNUSED(idhit);
+
 		(void)can_->TIMER;
 		can_->IFLAG1 = flexcan::CAN_FIFO_NE;