Hello Xiang,
Thank you for your fast response.
I was trying to build out of the NuttX structure, using NuttX as a library.
I tested and checked what you showed and it worked.
I exported the configuration (running make export and uncompressing
the zip file into my environment) and tried to build again and I it is
still not compiling.
Finally, I added the '#include <nuttx/config.h> and it is still not working.
I wil test now inside the NuttX structure.
Thank you very much.
Best regards,
Flavio
Em seg., 15 de mar. de 2021 às 07:14, Xiang Xiao
<xiaoxiang781...@gmail.com> escreveu:
>
> On Mon, Mar 15, 2021 at 6:00 PM Flavio Castro Alves Filho <
> flavio.al...@gmail.com> wrote:
>
> > Hello,
> >
> > I am trying to use STL in a simple C++ Hello project and I am getting
> > compilation error.s
> >
> > Is STL supported in NuttX? Can I use it?
> >
> >
> Yes, you can. Please reference the following config and Make.defs to setup
> your C++ environment:
> nuttx/boards/arm/stm32/stm32f4discovery/configs/cxxtest/defconfig
> nuttx/boards/sim/sim/sim/configs/cxxtest/defconfig
> nuttx/nuttx/boards/sim/sim/sim/configs/libcxxtest/defconfig
>
>
> > Here is my sample code:
> >
> > === Hello.cpp ===
> > #include <stdio.h>
> > #include "HelloWorld.h"
> >
> > CHelloWorld::CHelloWorld() {
> > mSecret = 42;
> > printf("Constructor: mSecret=%d\n",mSecret);
> > }
> >
> > CHelloWorld::~CHelloWorld() {
> >
> > }
> >
> > bool CHelloWorld::HelloWorld(void) {
> > printf("HelloWorld: mSecret=%d\n",mSecret);
> >
> > if (mSecret == 42) {
> > printf("CHelloWorld: HelloWorld: Hello, world!");
> > return true;
> > }
> > else {
> > printf("CHelloWorld: HelloWorld: CONSTRUCTION FAILED!\n");
> > return false;
> > }
> > }
> > =========
> >
> > === Hello.h ===
> > class CHelloWorld
> > {
> > public:
> > CHelloWorld();
> > ~CHelloWorld();
> > bool HelloWorld(void);
> > private:
> > int mSecret;
> > };
> > =========
> >
> > === Log.cpp ===
> > #include "Log.h"
> > #include <stdio.h>
> > #include <string>
> >
> > void Log::print(std::string_view message) {
> >
> > FILE *fp = fopen("/dev/ttyS0", "w");
> > if (fp == NULL) {
> > printf("Error opening serial port!\n");
> > return;
> > }
> >
> > std::string msgStr { message };
> >
> > /* Try to force input data on stdin */
> > fwrite(msgStr.c_str(), sizeof(char), message.length(), fp);
> >
> > fclose(fp);
> > }
> > =========
> >
> > === Log.h ===
> > #include <string_view>
> >
> > class Log {
> > public:
> > static void print(std::string_view message);
> > };
> > =========
> >
> > And there the compilation error:
> > =========
> > -- Build files have been written to: /home/ubuntu/nuttx-apps/hellocpp/build
> > [4/4] Linking CXX executable src/hellocpp
> > FAILED: src/hellocpp
> > : && arm-none-eabi-ld --entry=__start -nostartfiles -nostdlib
> > -nodefaultlibs
> > -T/home/ubuntu/nuttx-apps/hellocpp/nuttx-export-9.1.0/scripts/ld.script
> > -o hellocpp.elf src/CMakeFiles/hellocpp.dir/HelloWorld.cpp.o
> > src/CMakeFiles/hellocpp.dir/Log.cpp.o
> > src/CMakeFiles/hellocpp.dir/main.cpp.o
> > -L/home/ubuntu/nuttx-apps/hellocpp/src/hellocpp
> > -L/home/ubuntu/nuttx-apps/hellocpp/nuttx-export-9.1.0/libs
> > --start-group -lc -larch -lbinfmt -lboard -lboards -ldrivers
> > -lfs -lmm -lsched -lxx -lnet -lsupc++
> > /usr/lib/gcc/arm-none-eabi/9.2.1/thumb/v7e-m/nofp/libgcc.a
> > --end-group && cd /home/ubuntu/nuttx-apps/hellocpp/build/src &&
> > arm-none-eabi-objcopy -S -O binary
> > /home/ubuntu/nuttx-apps/hellocpp/build/hellocpp.elf
> > /home/ubuntu/nuttx-apps/hellocpp/build/hellocpp.bin
> > arm-none-eabi-ld: src/CMakeFiles/hellocpp.dir/Log.cpp.o: in function
> > `void std::__cxx11::basic_string<char, std::char_traits<char>,
> > std::allocator<char> >::_M_construct<char const*>(char const*, char
> > const*, std::forward_iterator_tag)':
> > /usr/include/newlib/c++/9.2.1/bits/basic_string.tcc:212: undefined
> > reference to `std::__throw_logic_error(char const*)'
> > arm-none-eabi-ld:
> > /usr/include/newlib/c++/9.2.1/bits/basic_string.tcc:219: undefined
> > reference to `std::__cxx11::basic_string<char, std::char_traits<char>,
> > std::allocator<char> >::_M_create(unsigned int&, unsigned int)'
> > arm-none-eabi-ld:
> > /usr/include/newlib/c++/9.2.1/bits/basic_string.tcc:225: undefined
> > reference to `std::__cxx11::basic_string<char, std::char_traits<char>,
> > std::allocator<char> >::_S_copy_chars(char*, char const*, char
> > const*)'
> > arm-none-eabi-ld: src/CMakeFiles/hellocpp.dir/Log.cpp.o: in function
> > `std::__cxx11::basic_string<char, std::char_traits<char>,
> > std::allocator<char> >::~basic_string()':
> > /usr/include/newlib/c++/9.2.1/bits/basic_string.h:658: undefined
> > reference to `std::__cxx11::basic_string<char, std::char_traits<char>,
> > std::allocator<char> >::_M_dispose()'
> > arm-none-eabi-ld:
> > /usr/include/newlib/c++/9.2.1/bits/basic_string.h:658: undefined
> > reference to `std::__cxx11::basic_string<char, std::char_traits<char>,
> > std::allocator<char> >::_M_dispose()'
> > ninja: build stopped: subcommand failed.
> > make[1]: *** [Makefile:13: _build] Error 1
> > make[1]: Leaving directory '/home/ubuntu/nuttx-apps/hellocpp'
> > make: *** [Makefile:25: default] Error 2
> > =========
> >
> > My CMakelists:
> >
> > === CMakeLists.txt ===
> > cmake_minimum_required(VERSION 3.2...3.15)
> >
> > project(hellocpp
> > VERSION 1.0
> > DESCRIPTION "Hello world C++ Nuttx"
> > )
> >
> > set(CMAKE_CXX_STANDARD 17)
> > set(CMAKE_CXX_STANDARD_REQUIRED ON)
> > set(CMAKE_C_STANDARD 99)
> >
> > set(NUTTX_PATH "${CMAKE_SOURCE_DIR}/nuttx-export-9.1.0")
> >
> > include(cmake/phigw.cmake)
> >
> > set(AC_COMMON_FLAGS "${AC_COMMON_FLAGS} -fno-builtin -Wall -Wshadow
> > -Wundef -g")
> >
> > set(AC_DEFINES "${AC_DEFINES} -DCONFIG_WCHAR_BUILTIN")
> >
> > include_directories(
> > src
> > ${NUTTX_PATH}/include
> > ${NUTTX_PATH}/arch/chip
> > )
> >
> > set(EXE_NAME hellocpp)
> >
> > set(CMAKE_CXX_FLAGS "${AC_HW_FLAGS} ${AC_DEFINES} ${AC_COMMON_FLAGS}
> > ${AC_CXX_EXTRA_FLAGS}")
> > if (PARAM_DEBUG)
> > set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Os -g")
> > else()
> > set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Os")
> > endif()
> >
> > set(CMAKE_SKIP_RPATH ON)
> > set(CMAKE_CXX_LINK_EXECUTABLE "${CMAKE_LINKER} ${AC_LINKER_FLAGS} -o
> > ${EXE_NAME}.elf <OBJECTS> <LINK_LIBRARIES>")
> >
> > set(BUILD_SHARED_LIBS OFF)
> >
> > add_subdirectory(src)
> > =========
> >
> > === src/CMakelists.txt ===
> > set(HEADER_FILES
> > HelloWorld.h
> > Log.h
> > )
> >
> > set(SOURCE_FILES
> > HelloWorld.cpp
> > Log.cpp
> > )
> >
> > link_directories(${EXE_NAME} ${NUTTX_PATH}/libs)
> >
> > add_executable(${EXE_NAME} ${SOURCE_FILES} main.cpp ${HEADER_FILES})
> >
> > add_custom_command(
> > TARGET ${EXE_NAME}
> > POST_BUILD
> > COMMAND ${CMAKE_OBJCOPY} ARGS -S -O binary
> > ${CMAKE_BINARY_DIR}/${EXE_NAME}.elf
> > ${CMAKE_BINARY_DIR}/${EXE_NAME}.bin
> > )
> >
> > target_link_libraries(${EXE_NAME} --start-group)
> > target_link_libraries(${EXE_NAME} c)
> > target_link_libraries(${EXE_NAME} arch)
> > target_link_libraries(${EXE_NAME} binfmt)
> > target_link_libraries(${EXE_NAME} board)
> > target_link_libraries(${EXE_NAME} boards)
> > target_link_libraries(${EXE_NAME} drivers)
> > target_link_libraries(${EXE_NAME} fs)
> > target_link_libraries(${EXE_NAME} mm)
> > target_link_libraries(${EXE_NAME} sched)
> > target_link_libraries(${EXE_NAME} xx)
> > target_link_libraries(${EXE_NAME} net)
> > target_link_libraries(${EXE_NAME} supc++)
> > target_link_libraries(${EXE_NAME}
> > /usr/lib/gcc/arm-none-eabi/9.2.1/thumb/v7e-m/nofp/libgcc.a)
> > target_link_libraries(${EXE_NAME} --end-group)
> > =========
> >
> > I am using Ubuntu 20.04 operating system and the toolchain provided
> > from the Ubuntu Repository.
> >
> > Best regards,
> >
> > Flavio
> >
> >
> >
> >
> > --
> > Flavio de Castro Alves Filho
> >
> > flavio.al...@gmail.com
> > Twitter: http://twitter.com/#!/fraviofii
> > LinkedIn profile: www.linkedin.com/in/flaviocastroalves
> >
--
Flavio de Castro Alves Filho
flavio.al...@gmail.com
Twitter: http://twitter.com/#!/fraviofii
LinkedIn profile: www.linkedin.com/in/flaviocastroalves
