[erlang-questions] How to Cross compile Erlang/OTP R13B04 for TileraPro64

[Rickard Green]

The following patch hopefully fixes you problem. The bug only
manifests itself when the number of logical processors found is fewer
than reported by sysconf(_SC_NPROCESSORS_CONF). This is normally never
the case, but on the tilera (with a relatively new MDE) it is.

Regards,
Rickard, Erlang/OTP, Ericsson AB

$ diff -Nau otp_src_R13B04/erts/lib_src/common/erl_misc_utils.c{~,}
--- otp_src_R13B04/erts/lib_src/common/erl_misc_utils.c~
2009-11-20 14:32:23.000000000 +0100
+++ otp_src_R13B04/erts/lib_src/common/erl_misc_utils.c 2010-03-29
15:53:28.000000000 +0200
@@ -373,8 +373,8 @@
        return 0;
     memcpy((void *) topology,
           (void *) cpuinfo->topology,
-          cpuinfo->configured*sizeof(erts_cpu_topology_t));
-    return cpuinfo->configured;
+          cpuinfo->topology_size*sizeof(erts_cpu_topology_t));
+    return cpuinfo->topology_size;
 }

 int



2010/3/27 JR Zhang <zhangjr2009@REDACTED>:
> Hi,
>
> I couldn't cross compile Erlang/OTP R13B04 for Tilera board properly. I
> follow the steps described in INSTALL-CROSS.md, which are :
> (1) cd $ERL_TOP
> (2) ./otp_build configure --xcomp-conf=<path to
> erl-xcomp-TileraMDE2.0-tilepro.conf>
> (3) ./otp_build boot -a
> (4) ./otp_build release -a /lhome/x/otp
> (5) ./Install -cross -minimal /lhome/x/otp
> The compilation is successful without any errors. But after I upload it to
> Tilera board and run it, I get an error, "Segmentation fault".
>
>  I found a thread discussing how to cross compile R13B03 for Tilera Board
> http://www.erlang.org/cgi-bin/ezmlm-cgi/4/49164 .  I tried to add steps like
> "touch lib/crypto/SKIP', "touch lib/ssl/SKIP", "touch lib/ssh/SKIP". But I
> still didn't succeed.
>
> Could someone help me? Thank you in advance.
>
> Best Regards,
> Jianrong Zhang
> Kista Multicore Center, SICS
>