Hi Flavio, I'm looking to do something similar and have been putting the cmake stuff on the back-burner.
Is your cmake config something you'd be willing to share? No problem if not, just looking to save some headaches on my end. Thanks! Matt On Fri, Dec 11, 2020 at 10:07 AM Flavio Castro Alves Filho < flavio.al...@gmail.com> wrote: > Hello Marc, > > Thank you for your response. > > In fact, it was a little more than that: I didn't set the library > group in cmake and also didn't set the correct linker. > > Solving these issues, I could have it working and running. > > Thank you very much. > > Best regards, > > Flavio > > > > Em sex., 11 de dez. de 2020 às 09:31, Marc Rosen > <ma...@zeitcontrol.de> escreveu: > > > > Hi Flavio, > > > > well I think there are two problems: > > > > 1. it seems either you are missing libarch.a or you have a library order > > problem. > > Because ld can not find up_exit etc. those are arch specific functions. > > > > 2. I would recommend you to add the flag -nostdlib. At least it is going > > to avoid newlib symbol problems. > > > > regards, > > marc > > Am 11.12.2020 um 13:07 schrieb Flavio Castro Alves Filho: > > > Hello, > > > > > > Has anybody here used NuttX as a library and a C++ project with cmake? > > > > > > I tried to create a project (using hellocxx example) with this setup, > > > but I was not successful. I can build, but I cannot link. > > > > > > My link errors are the following: > > > > > > [ 33%] Linking CXX executable hellocpp > > > > > > > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/lib/thumb/v7e-m/nofp/crt0.o: > > > in function `_mainCRTStartup': > > > > /build/newlib-CVVEyx/newlib-3.3.0/build/arm-none-eabi/thumb/v7e-m/nofp/libgloss/arm/semihv2m/../../../../../../../../libgloss/arm/crt0.S:545: > > > undefined reference to `main' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > > /home/ubuntu/Documents/nuttx/hellocpp/nuttx-export-9.1.0/libs/libsched.a(exit.o): > > > in function `_exit': > > > /home/ubuntu/Documents/nuttx/nuttx/sched/task/exit.c:56: undefined > > > reference to `up_exit' > > > > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > /home/ubuntu/Documents/nuttx/nuttx/sched/task/exit.c:56: undefined > > > reference to `up_exit' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > > /home/ubuntu/Documents/nuttx/hellocpp/nuttx-export-9.1.0/libs/libsched.a(nx_start.o): > > > in function `nx_start': > > > /home/ubuntu/Documents/nuttx/nuttx/sched/init/nx_start.c:537: > > > undefined reference to `up_initial_state' > > > > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > /home/ubuntu/Documents/nuttx/nuttx/sched/init/nx_start.c:566: > > > undefined reference to `up_allocate_heap' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > /home/ubuntu/Documents/nuttx/nuttx/sched/init/nx_start.c:567: > > > undefined reference to `umm_initialize' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > /home/ubuntu/Documents/nuttx/nuttx/sched/init/nx_start.c:598: > > > undefined reference to `iob_initialize' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > /home/ubuntu/Documents/nuttx/nuttx/sched/init/nx_start.c:618: > > > undefined reference to `fs_initialize' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > /home/ubuntu/Documents/nuttx/nuttx/sched/init/nx_start.c:701: > > > undefined reference to `up_initialize' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > /home/ubuntu/Documents/nuttx/nuttx/sched/init/nx_start.c:733: > > > undefined reference to `binfmt_initialize' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > /home/ubuntu/Documents/nuttx/nuttx/sched/init/nx_start.c:785: > > > undefined reference to `syslog_initialize' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > /home/ubuntu/Documents/nuttx/nuttx/sched/init/nx_start.c:832: > > > undefined reference to `up_idle' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > > /home/ubuntu/Documents/nuttx/hellocpp/nuttx-export-9.1.0/libs/libsched.a(sched_lock.o): > > > in function `sched_lock': > > > /home/ubuntu/Documents/nuttx/nuttx/sched/sched/sched_lock.c:242: > > > undefined reference to `up_interrupt_context' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > > /home/ubuntu/Documents/nuttx/hellocpp/nuttx-export-9.1.0/libs/libsched.a(sched_unlock.o): > > > in function `sched_unlock': > > > /home/ubuntu/Documents/nuttx/nuttx/sched/sched/sched_unlock.c:227: > > > undefined reference to `up_interrupt_context' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > /home/ubuntu/Documents/nuttx/nuttx/sched/sched/sched_unlock.c:273: > > > undefined reference to `up_release_pending' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > > /home/ubuntu/Documents/nuttx/hellocpp/nuttx-export-9.1.0/libs/libsched.a(task_create.o): > > > in function `nxthread_create': > > > /home/ubuntu/Documents/nuttx/nuttx/sched/task/task_create.c:81: > > > undefined reference to `zalloc' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > > /home/ubuntu/Documents/nuttx/hellocpp/nuttx-export-9.1.0/libs/libsched.a(task_init.o): > > > in function `nxtask_init': > > > /home/ubuntu/Documents/nuttx/nuttx/sched/task/task_init.c:115: > > > undefined reference to `up_use_stack' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > /home/ubuntu/Documents/nuttx/nuttx/sched/task/task_init.c:121: > > > undefined reference to `up_create_stack' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > /home/ubuntu/Documents/nuttx/nuttx/sched/task/task_init.c:174: > > > undefined reference to `up_release_stack' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > > /home/ubuntu/Documents/nuttx/hellocpp/nuttx-export-9.1.0/libs/libsched.a(task_setup.o): > > > in function `nxthread_setup_scheduler': > > > /home/ubuntu/Documents/nuttx/nuttx/sched/task/task_setup.c:415: > > > undefined reference to `up_initial_state' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > /home/ubuntu/Documents/nuttx/nuttx/sched/task/task_setup.c:415: > > > undefined reference to `up_initial_state' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > > /home/ubuntu/Documents/nuttx/hellocpp/nuttx-export-9.1.0/libs/libsched.a(task_setup.o): > > > in function `nxtask_setup_stackargs': > > > /home/ubuntu/Documents/nuttx/nuttx/sched/task/task_setup.c:550: > > > undefined reference to `up_stack_frame' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > > /home/ubuntu/Documents/nuttx/hellocpp/nuttx-export-9.1.0/libs/libsched.a(task_activate.o): > > > in function `nxtask_activate': > > > /home/ubuntu/Documents/nuttx/nuttx/sched/task/task_activate.c:80: > > > undefined reference to `up_unblock_task' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > > /home/ubuntu/Documents/nuttx/hellocpp/nuttx-export-9.1.0/libs/libsched.a(group_create.o): > > > in function `group_allocate': > > > /home/ubuntu/Documents/nuttx/nuttx/sched/group/group_create.c:222: > > > undefined reference to `zalloc' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > > /home/ubuntu/Documents/nuttx/hellocpp/nuttx-export-9.1.0/libs/libsched.a(group_leave.o): > > > in function `group_release': > > > /home/ubuntu/Documents/nuttx/nuttx/sched/group/group_leave.c:152: > > > undefined reference to `files_releaselist' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > > /home/ubuntu/Documents/nuttx/hellocpp/nuttx-export-9.1.0/libs/libsched.a(group_setupidlefiles.o): > > > in function `group_setupidlefiles': > > > > /home/ubuntu/Documents/nuttx/nuttx/sched/group/group_setupidlefiles.c:86: > > > undefined reference to `files_initlist' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > > /home/ubuntu/Documents/nuttx/nuttx/sched/group/group_setupidlefiles.c:100: > > > undefined reference to `nx_open' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > > /home/ubuntu/Documents/nuttx/nuttx/sched/group/group_setupidlefiles.c:105: > > > undefined reference to `fs_dupfd2' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > > /home/ubuntu/Documents/nuttx/nuttx/sched/group/group_setupidlefiles.c:106: > > > undefined reference to `fs_dupfd2' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > > /home/ubuntu/Documents/nuttx/hellocpp/nuttx-export-9.1.0/libs/libsched.a(group_setuptaskfiles.o): > > > in function `group_setuptaskfiles': > > > > /home/ubuntu/Documents/nuttx/nuttx/sched/group/group_setuptaskfiles.c:209: > > > undefined reference to `files_initlist' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > > /home/ubuntu/Documents/nuttx/hellocpp/nuttx-export-9.1.0/libs/libsched.a(group_setuptaskfiles.o): > > > in function `sched_dupfiles': > > > > /home/ubuntu/Documents/nuttx/nuttx/sched/group/group_setuptaskfiles.c:108: > > > undefined reference to `file_dup2' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > > /home/ubuntu/Documents/nuttx/hellocpp/nuttx-export-9.1.0/libs/libsched.a(mq_release.o): > > > in function `nxmq_release': > > > /home/ubuntu/Documents/nuttx/nuttx/sched/mqueue/mq_release.c:55: > > > undefined reference to `nxmq_close_group' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > > /home/ubuntu/Documents/nuttx/hellocpp/nuttx-export-9.1.0/libs/libsched.a(sched_releasetcb.o): > > > in function `nxsched_release_tcb': > > > /home/ubuntu/Documents/nuttx/nuttx/sched/sched/sched_releasetcb.c:134: > > > undefined reference to `up_release_stack' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > > /home/ubuntu/Documents/nuttx/hellocpp/nuttx-export-9.1.0/libs/libsched.a(sem_wait.o): > > > in function `nxsem_wait': > > > /home/ubuntu/Documents/nuttx/nuttx/sched/semaphore/sem_wait.c:78: > > > undefined reference to `up_interrupt_context' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > /home/ubuntu/Documents/nuttx/nuttx/sched/semaphore/sem_wait.c:153: > > > undefined reference to `up_block_task' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > > /home/ubuntu/Documents/nuttx/hellocpp/nuttx-export-9.1.0/libs/libsched.a(sem_clockwait.o): > > > in function `nxsem_clockwait': > > > /home/ubuntu/Documents/nuttx/nuttx/sched/semaphore/sem_clockwait.c:99: > > > undefined reference to `up_interrupt_context' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > > /home/ubuntu/Documents/nuttx/hellocpp/nuttx-export-9.1.0/libs/libsched.a(sem_post.o): > > > in function `nxsem_post': > > > /home/ubuntu/Documents/nuttx/nuttx/sched/semaphore/sem_post.c:156: > > > undefined reference to `up_unblock_task' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > > /home/ubuntu/Documents/nuttx/hellocpp/nuttx-export-9.1.0/libs/libsched.a(sem_waitirq.o): > > > in function `nxsem_wait_irq': > > > /home/ubuntu/Documents/nuttx/nuttx/sched/semaphore/sem_waitirq.c:109: > > > undefined reference to `up_unblock_task' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > > /home/ubuntu/Documents/nuttx/hellocpp/nuttx-export-9.1.0/libs/libsched.a(sig_dispatch.o): > > > in function `nxsig_tcbdispatch': > > > > [48/1347]/home/ubuntu/Documents/nuttx/nuttx/sched/signal/sig_dispatch.c:370: > > > undefined reference to `up_unblock_task' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > > /home/ubuntu/Documents/nuttx/hellocpp/nuttx-export-9.1.0/libs/libsched.a(sig_dispatch.o): > > > in function `nxsig_alloc_pendingsignal': > > > /home/ubuntu/Documents/nuttx/nuttx/sched/signal/sig_dispatch.c:140: > > > undefined reference to `up_interrupt_context' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > > /home/ubuntu/Documents/nuttx/hellocpp/nuttx-export-9.1.0/libs/libsched.a(sig_dispatch.o): > > > in function `nxsig_tcbdispatch': > > > /home/ubuntu/Documents/nuttx/nuttx/sched/signal/sig_dispatch.c:402: > > > undefined reference to `up_schedule_sigaction' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > /home/ubuntu/Documents/nuttx/nuttx/sched/signal/sig_dispatch.c:413: > > > undefined reference to `up_unblock_task' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > > /home/ubuntu/Documents/nuttx/hellocpp/nuttx-export-9.1.0/libs/libsched.a(clock_initialize.o): > > > in function `clock_basetime': > > > /home/ubuntu/Documents/nuttx/nuttx/sched/clock/clock_initialize.c:105: > > > undefined reference to `up_rtc_getdatetime' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > > /home/ubuntu/Documents/nuttx/hellocpp/nuttx-export-9.1.0/libs/libsched.a(clock_initialize.o): > > > in function `clock_initialize': > > > /home/ubuntu/Documents/nuttx/nuttx/sched/clock/clock_initialize.c:218: > > > undefined reference to `up_timer_initialize' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > > /home/ubuntu/Documents/nuttx/hellocpp/nuttx-export-9.1.0/libs/libsched.a(group_setupstreams.o): > > > in function `group_setupstreams': > > > /home/ubuntu/Documents/nuttx/nuttx/sched/group/group_setupstreams.c:71: > > > undefined reference to `fs_fdopen' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > /home/ubuntu/Documents/nuttx/nuttx/sched/group/group_setupstreams.c:72: > > > undefined reference to `fs_fdopen' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > /home/ubuntu/Documents/nuttx/nuttx/sched/group/group_setupstreams.c:73: > > > undefined reference to `fs_fdopen' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > > /home/ubuntu/Documents/nuttx/hellocpp/nuttx-export-9.1.0/libs/libsched.a(mq_waitirq.o): > > > in function `nxmq_wait_irq': > > > /home/ubuntu/Documents/nuttx/nuttx/sched/mqueue/mq_waitirq.c:106: > > > undefined reference to `up_unblock_task' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > > /home/ubuntu/Documents/nuttx/hellocpp/nuttx-export-9.1.0/libs/libsched.a(sem_trywait.o): > > > in function `nxsem_trywait': > > > /home/ubuntu/Documents/nuttx/nuttx/sched/semaphore/sem_trywait.c:88: > > > undefined reference to `up_interrupt_context' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > > /home/ubuntu/Documents/nuttx/hellocpp/nuttx-export-9.1.0/libs/libsched.a(sig_timedwait.o): > > > in function `nxsig_timedwait': > > > /home/ubuntu/Documents/nuttx/nuttx/sched/signal/sig_timedwait.c:338: > > > undefined reference to `up_block_task' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > /home/ubuntu/Documents/nuttx/nuttx/sched/signal/sig_timedwait.c:355: > > > undefined reference to `up_block_task' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > > /home/ubuntu/Documents/nuttx/hellocpp/nuttx-export-9.1.0/libs/libsched.a(sig_timedwait.o): > > > in function `nxsig_timeout': > > > /home/ubuntu/Documents/nuttx/nuttx/sched/signal/sig_timedwait.c:122: > > > undefined reference to `up_unblock_task' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > > /home/ubuntu/Documents/nuttx/hellocpp/nuttx-export-9.1.0/libs/libsched.a(sig_allocpendingsigaction.o): > > > in function `nxsig_alloc_pendingsigaction': > > > > /home/ubuntu/Documents/nuttx/nuttx/sched/signal/sig_allocpendingsigaction.c:69: > > > undefined reference to `up_interrupt_context' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > > /home/ubuntu/Documents/nuttx/hellocpp/nuttx-export-9.1.0/libs/libnet.a(net_sockets.o): > > > in function `sockfd_allocate': > > > /home/ubuntu/Documents/nuttx/nuttx/net/socket/net_sockets.c:134: > > > undefined reference to `nxsched_get_sockets' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > > /home/ubuntu/Documents/nuttx/hellocpp/nuttx-export-9.1.0/libs/libnet.a(net_sockets.o): > > > in function `sockfd_socket': > > > /home/ubuntu/Documents/nuttx/nuttx/net/socket/net_sockets.c:256: > > > undefined reference to `nxsched_get_sockets' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > > /home/ubuntu/Documents/nuttx/hellocpp/nuttx-export-9.1.0/libs/libnet.a(net_sockets.o): > > > in function `sockfd_release': > > > /home/ubuntu/Documents/nuttx/nuttx/net/socket/net_sockets.c:224: > > > undefined reference to `nxsched_get_sockets' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > > /home/ubuntu/Documents/nuttx/hellocpp/nuttx-export-9.1.0/libs/libnet.a(tcp_conn.o): > > > in function `tcp_free': > > > /home/ubuntu/Documents/nuttx/nuttx/net/tcp/tcp_conn.c:790: undefined > > > reference to `iob_free_queue' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > > /home/ubuntu/Documents/nuttx/hellocpp/nuttx-export-9.1.0/libs/libnet.a(tcp_callback.o): > > > in function `tcp_datahandler': > > > /home/ubuntu/Documents/nuttx/nuttx/net/tcp/tcp_callback.c:251: > > > undefined reference to `iob_tryalloc' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > /home/ubuntu/Documents/nuttx/nuttx/net/tcp/tcp_callback.c:260: > > > undefined reference to `iob_trycopyin' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > /home/ubuntu/Documents/nuttx/nuttx/net/tcp/tcp_callback.c:269: > > > undefined reference to `iob_free_chain' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > /home/ubuntu/Documents/nuttx/nuttx/net/tcp/tcp_callback.c:277: > > > undefined reference to `iob_tryadd_queue' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > > /home/ubuntu/Documents/nuttx/hellocpp/nuttx-export-9.1.0/libs/libnet.a(tcp_backlog.o): > > > in function `tcp_backlogcreate': > > > /home/ubuntu/Documents/nuttx/nuttx/net/tcp/tcp_backlog.c:116: > > > undefined reference to `zalloc' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > > /home/ubuntu/Documents/nuttx/hellocpp/nuttx-export-9.1.0/libs/libnet.a(tcp_wrbuffer.o): > > > in function `tcp_wrbuffer_release': > > > /home/ubuntu/Documents/nuttx/nuttx/net/tcp/tcp_wrbuffer.c:260: > > > undefined reference to `iob_free_chain' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > > /home/ubuntu/Documents/nuttx/hellocpp/nuttx-export-9.1.0/libs/libnet.a(tcp_wrbuffer.o): > > > in function `tcp_wrbuffer_tryalloc': > > > /home/ubuntu/Documents/nuttx/nuttx/net/tcp/tcp_wrbuffer.c:226: > > > undefined reference to `iob_tryalloc' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > > /home/ubuntu/Documents/nuttx/hellocpp/nuttx-export-9.1.0/libs/libnet.a(udp_conn.o): > > > in function `udp_free': > > > /home/ubuntu/Documents/nuttx/nuttx/net/udp/udp_conn.c:631: undefined > > > reference to `iob_free_queue' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > > /home/ubuntu/Documents/nuttx/hellocpp/nuttx-export-9.1.0/libs/libnet.a(net_lock.o): > > > in function `net_ioballoc': > > > /home/ubuntu/Documents/nuttx/nuttx/net/utils/net_lock.c:514: undefined > > > reference to `iob_tryalloc' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > /home/ubuntu/Documents/nuttx/nuttx/net/utils/net_lock.c:527: undefined > > > reference to `iob_alloc' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > > /home/ubuntu/Documents/nuttx/hellocpp/nuttx-export-9.1.0/libs/libnet.a(tcp_notifier.o): > > > in function `tcp_readahead_notifier_setup': > > > /home/ubuntu/Documents/nuttx/nuttx/net/tcp/tcp_notifier.c:109: > > > undefined reference to `work_notifier_setup' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > > /home/ubuntu/Documents/nuttx/hellocpp/nuttx-export-9.1.0/libs/libnet.a(tcp_notifier.o): > > > in function `tcp_writebuffer_notifier_setup': > > > /home/ubuntu/Documents/nuttx/nuttx/net/tcp/tcp_notifier.c:165: > > > undefined reference to `work_notifier_setup' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > > /home/ubuntu/Documents/nuttx/hellocpp/nuttx-export-9.1.0/libs/libnet.a(tcp_notifier.o): > > > in function `tcp_disconnect_notifier_setup': > > > /home/ubuntu/Documents/nuttx/nuttx/net/tcp/tcp_notifier.c:218: > > > undefined reference to `work_notifier_setup' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > > /home/ubuntu/Documents/nuttx/hellocpp/nuttx-export-9.1.0/libs/libnet.a(tcp_notifier.o): > > > in function `tcp_notifier_teardown': > > > /home/ubuntu/Documents/nuttx/nuttx/net/tcp/tcp_notifier.c:244: > > > undefined reference to `work_notifier_teardown' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > > /home/ubuntu/Documents/nuttx/hellocpp/nuttx-export-9.1.0/libs/libnet.a(tcp_notifier.o): > > > in function `tcp_readahead_signal': > > > /home/ubuntu/Documents/nuttx/nuttx/net/tcp/tcp_notifier.c:272: > > > undefined reference to `work_notifier_signal' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > > /home/ubuntu/Documents/nuttx/hellocpp/nuttx-export-9.1.0/libs/libnet.a(tcp_notifier.o): > > > in function `tcp_writebuffer_signal': > > > /home/ubuntu/Documents/nuttx/nuttx/net/tcp/tcp_notifier.c:301: > > > undefined reference to `work_notifier_signal' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > > /home/ubuntu/Documents/nuttx/hellocpp/nuttx-export-9.1.0/libs/libnet.a(tcp_notifier.o): > > > in function `tcp_disconnect_signal': > > > /home/ubuntu/Documents/nuttx/nuttx/net/tcp/tcp_notifier.c:324: > > > undefined reference to `work_notifier_signal' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > > /home/ubuntu/Documents/nuttx/hellocpp/nuttx-export-9.1.0/libs/libc.a(lib_assert.o): > > > in function `_assert': > > > /home/ubuntu/Documents/nuttx/nuttx/libs/libc/assert/lib_assert.c:36: > > > undefined reference to `up_assert' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > > /home/ubuntu/Documents/nuttx/hellocpp/nuttx-export-9.1.0/libs/libc.a(task_startup.o): > > > in function `cxx_initialize': > > > /home/ubuntu/Documents/nuttx/nuttx/libs/libc/sched/task_startup.c:108: > > > undefined reference to `_sinit' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > /home/ubuntu/Documents/nuttx/nuttx/libs/libc/sched/task_startup.c:108: > > > undefined reference to `_einit' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > /home/ubuntu/Documents/nuttx/nuttx/libs/libc/sched/task_startup.c:108: > > > undefined reference to `_stext' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > > /home/ubuntu/Documents/nuttx/hellocpp/nuttx-export-9.1.0/libs/libc.a(lib_printf.o): > > > in function `printf': > > > /home/ubuntu/Documents/nuttx/nuttx/libs/libc/stdio/lib_printf.c:44: > > > undefined reference to `nxsched_get_streams' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > > /home/ubuntu/Documents/nuttx/hellocpp/nuttx-export-9.1.0/libs/libc.a(lib_abort.o): > > > in function `abort': > > > /home/ubuntu/Documents/nuttx/nuttx/libs/libc/stdlib/lib_abort.c:95: > > > undefined reference to `pthread_exit' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > > /home/ubuntu/Documents/nuttx/hellocpp/nuttx-export-9.1.0/libs/libc.a(lib_syslog.o): > > > in function `vsyslog': > > > /home/ubuntu/Documents/nuttx/nuttx/libs/libc/syslog/lib_syslog.c:84: > > > undefined reference to `nx_vsyslog' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > > /home/ubuntu/Documents/nuttx/hellocpp/nuttx-export-9.1.0/libs/libc.a(tls_getinfo.o): > > > in function `tls_get_info': > > > /home/ubuntu/Documents/nuttx/nuttx/libs/libc/tls/tls_getinfo.c:63: > > > undefined reference to `nxsched_get_stackinfo' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/lib/thumb/v7e-m/nofp/libg.a(lib_a-sbrkr.o): > > > in function `_sbrk_r': > > > > /build/newlib-CVVEyx/newlib-3.3.0/build/arm-none-eabi/thumb/v7e-m/nofp/newlib/libc/reent/../../../../../../../../newlib/libc/reent/sbrkr.c:51: > > > undefined reference to `_sbrk' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/lib/thumb/v7e-m/nofp/libg.a(lib_a-writer.o): > > > in function `_write_r': > > > > /build/newlib-CVVEyx/newlib-3.3.0/build/arm-none-eabi/thumb/v7e-m/nofp/newlib/libc/reent/../../../../../../../../newlib/libc/reent/writer.c:49: > > > undefined reference to `_write' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/lib/thumb/v7e-m/nofp/libg.a(lib_a-closer.o): > > > in function `_close_r': > > > > /build/newlib-CVVEyx/newlib-3.3.0/build/arm-none-eabi/thumb/v7e-m/nofp/newlib/libc/reent/../../../../../../../../newlib/libc/reent/closer.c:47: > > > undefined reference to `_close' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/lib/thumb/v7e-m/nofp/libg.a(lib_a-lseekr.o): > > > in function `_lseek_r': > > > > /build/newlib-CVVEyx/newlib-3.3.0/build/arm-none-eabi/thumb/v7e-m/nofp/newlib/libc/reent/../../../../../../../../newlib/libc/reent/lseekr.c:49: > > > undefined reference to `_lseek' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/lib/thumb/v7e-m/nofp/libg.a(lib_a-openr.o): > > > in function `_open_r': > > > > /build/newlib-CVVEyx/newlib-3.3.0/build/arm-none-eabi/thumb/v7e-m/nofp/newlib/libc/reent/../../../../../../../../newlib/libc/reent/openr.c:50: > > > undefined reference to `_open' > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/bin/ld: > > > > /usr/lib/gcc/arm-none-eabi/9.2.1/../../../arm-none-eabi/lib/thumb/v7e-m/nofp/libg.a(lib_a-readr.o): > > > in function `_read_r': > > > > /build/newlib-CVVEyx/newlib-3.3.0/build/arm-none-eabi/thumb/v7e-m/nofp/newlib/libc/reent/../../../../../../../../newlib/libc/reent/readr.c:49: > > > undefined reference to `_read' > > > collect2: error: ld returned 1 exit status > > > make[2]: *** [src/CMakeFiles/hellocpp.dir/build.make:100: > src/hellocpp] Error 1 > > > make[1]: *** [CMakeFiles/Makefile2:94: > src/CMakeFiles/hellocpp.dir/all] Error 2 > > > make: *** [Makefile:84: all] Error 2 > > > > > > Does anybody have any idea of what am I doing wrong? > > > > > > Best regards, > > > > > > Flavio > > > > > > > > > > -- > Flavio de Castro Alves Filho > > flavio.al...@gmail.com > Twitter: http://twitter.com/#!/fraviofii > LinkedIn profile: www.linkedin.com/in/flaviocastroalves >
