problem about compiler RTEMS!

[Joel Sherrill]

Try the output of this:

Put this in conftest.c:

main(){return 0;}

sparc-rtems-gcc conftest.c

I bet you will see something undefined.  That is the test it is trying.


red-eye at 263.net wrote:

> to use RTEMS on ERC32.i download the four RPMS to build c cross compiler:
> sparc-rtems-binutils-2.10-3.i386.rpm
> sparc-rtems-gcc-gcc2.95.2newlib1.9.0-2.i386.rpm
> rtems-base-binutils-2.10-3.i386.rpm
> rtems-base-gcc-gcc2.95.2newlib1.9.0-2.i386.rpm
> they are install right!
> but when i build rtems-ss-20010326 
>    export PATH=$PATH:/opt/rtems/bin
> ../rtems-ss-20010326/configure --target=sparc-rtems --di
> sable-rtems-inlines --disable-posix --disable-itron --disable-networking --enable-gcc28 --enable-cxx --prefix=/opt/rtems
> there is error like this:
> 
>  checking if cpu sparc is supported... yes
> checking for sparc-rtems-gcc... sparc-rtems-gcc
> checking for gcc... (cached) sparc-rtems-gcc
> checking whether the C compiler (sparc-rtems-gcc  ) works... no
> configure: error: installation or configuration problem: C compiler cannot create executables.
> configure: error: ../../../../rtems-ss-20010326/c/make/configure failed for make
> configure: error: ../../../rtems-ss-20010326/c/configure failed for c
> 
> why?
> i do the same on mips and build the rtems-ss-20010326 correctly!
> 
> i see my hello_world.num?
> 00000000 A _PROM_START
> 00000000 A __DYNAMIC
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> 01f80000 A _ERC32_MEC
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> 02015bf8 D _edata
> 02015bf8 B bss_start
> 02015c00 D edata
> 02015d88 B stack_space
> 02019d88 B ___DTOR_LIST__
> 02019d90 B ___CTOR_LIST__
> 02019d98 B _bsp_isr_level
> 02019d9c B _rtems_progname
> 02019da0 B _BSP_Configuration
> 02019dd4 B _CPU_SPARC_CLICKS_PER_TICK
> 02019dd8 B _Cpu_table
> 02019e00 B _libc_reentrant
> 02019e08 B _RTEMS_Malloc_Heap
> 02019e0c B _RTEMS_Malloc_Sbrk_amount
> 02019e10 B _rtems_libio_iops
> 02019e14 B _rtems_libio_semaphore
> 02019e18 B _rtems_libio_last_iop
> 02019e20 B __Watchdog_Sync_level
> 02019e24 B __MPCI_table
> 02019e28 B __Context_Switch_necessary
> 02019e2c B __CPU_Interrupt_stack_low
> 02019e30 B __Thread_Ticks_per_timeslice
> 02019e34 B __Thread_Maximum_extensions
> 02019e38 B __MPCI_Receive_server_tcb
> 02019e3c B __Debug_Level
> 02019e40 B __IO_Number_of_devices
> 02019e44 B __IO_Number_of_drivers
> 02019e48 B __MPCI_Semaphore
> 02019e90 B __CPU_Null_fp_context
> 02019f18 B __Configuration_Table
> 02019f1c B __CPU_Interrupt_stack_high
> 02019f20 B __TOD_Seconds_since_epoch
> 02019f24 B __TOD_Is_set
> 02019f28 B __Thread_Allocated_fp
> 02019f2c B __ISR_Nest_level
> 02019f30 B __Thread_BSP_context
> 0201a5c8 B _rtems_ada_self
> 0201a5cc B __Thread_Dispatch_disable_level
> 0201a5d0 B __TOD_Microseconds_per_tick
> 0201a5d4 B __System_state_Current
> 0201a5d8 B __Objects_Local_node
> 0201a5e0 B __Workspace_Area
> 0201a600 B __Objects_Information_table
> 0201a648 B __TOD_Current
> 0201a668 B __TOD_Seconds_watchdog
> 0201a690 B __Thread_Idle
> 0201a698 B __RTEMS_tasks_Number_of_initialization_tasks
> 0201a6a0 B __Dual_ported_memory_Information
> 0201a6d4 B __RTEMS_tasks_User_initialization_tasks
> 0201a6d8 B __Region_Information
> 0201a710 B __RTEMS_tasks_Information
> 0201a748 B __Partition_Information
> 0201a780 B __Timer_Information
> 0201a7b4 B __Event_Sync_state
> 0201a7b8 B __Semaphore_Information
> 0201a7f0 B __Rate_monotonic_Information
> 0201a828 B __Message_queue_Information
> 0201a85c B end
> 0201a860 B __end
> 0201a860 B _end
> 02400000 A _RAM_END
> 
> it has so much function that i did not use in the hello_world,such as
> Semaphore¡¢memory manage¡¢etc.i just use task creat and delete,did not use task suspend and rtems_rate_monotonic_create .etc
> why they are in my code? and how to move them from my application 
> program code?
>                                                    thanks alt
> 
> 
> 
> _____________________________________________
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