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
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