[erlang-questions] problems building r11b-3

Ulf Wiger <>
Wed Dec 10 17:54:21 CET 2008


...except that failed too.  :(

/U

2008/12/10 Ulf Wiger <>:
> Thanks. Indeed it said that floating point exceptions were
> unreliable. I think I'll just disable hipe, since I have a good
> R12B install already.
>
> BR,
> Ulf W
>
> 2008/12/10 Mikael Pettersson <>:
>> Ulf Wiger writes:
>>  > Thanks, That got me further:
>> [snip]
>>  > obj/i686-pc-linux-gnu/opt/hybrid/ttsl_drv.o -lutil -ldl -lm
>>  > -lpthread -lncurses -L../lib/internal/i686-pc-linux-gnu
>>  > /home/uwiger/src/otp/otp_src_R11B-3/erts/obj/i686-pc-linux-gnu/libz.a
>>  > -lethread -lpthread -lerts_internal_r -lrt
>>  > obj/i686-pc-linux-gnu/opt/hybrid/hipe_x86_bifs.o: In function
>>  > `nbif_handle_fp_exception':
>>  > /home/uwiger/src/otp/otp_src_R11B-3/erts/emulator/i686-pc-linux-gnu/opt/hybrid/hipe_x86_bifs.S:269:
>>  > undefined reference to `erts_restore_fpu'
>>  > collect2: ld returned 1 exit status
>>  > make[3]: *** [/home/uwiger/src/otp/otp_src_R11B-3/bin/i686-pc-linux-gnu/beam.hybrid]
>>  > Error 1
>>
>> Looks like erts/configure didn't detect working FP exceptions on this box,
>> which since it's an x86 most likely is a compile problem with the fpe-test.c
>> program embedded in erts/configure.in. Without FP exceptions you can't have
>> HiPE (except on ARM which assumes no HW FPU).
>>
>> I believe there are now (R12) explicit checks in erts/configure to disable
>> HiPE on x86/powerpc/sparc if FP exceptions don't work, perhaps those checks
>> don't exist in R11.
>>
>> Either run erts/configure again and look for messages about reliable floating-
>> point exceptions not working, or look in erts/i686-pc-linux-gnu/config.h for
>> a #define NO_FPE_SIGNALS.
>>
>> If you can't resolve the lack of FP exception support, you'll have to
>> reconfigure with --disable-hipe.
>>
>



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