Re: st: Compiling User Stata Plugins on 64-bit Solaris

["Thomas, Anthony" <anthony_h_thomas@brown.edu>]

Not sure, that's been a bit of a mystery to me as well. I suspect that
the plugin call prefix is a wrapper that handles passing arguments to
the compiled code (like the .C function in R). Without this step, your
compiled code cannot receive arguments from Stata and terminates with
an error - which Stata interprets as a "system error." The program
exists in Stata because the command "program something, plugin"
created a program handle. But that's just speculation.

On Tue, Apr 15, 2014 at 1:51 PM, Brad Cable <bscable@ilstu.edu> wrote:
> Wow that was simple.  So why exactly does it create the command of the same
> name when importing the plugin?
>
> . hello
> unrecognized command:  hello
> r(199);
> . program hello, plugin
> . hello
> r(9998);
> . plugin call hello
> Hello World
>
>
> Thanks for your help!
> -Brad
>
>
> On 04/15/2014 12:28 PM, Thomas, Anthony wrote:
>>
>> Hi Brad,
>>
>> Got a bounce notification on previous message - so not sure if message
>> went through. Anyways, when you execute a plugin, try using the syntax
>> "plugin call myplugin <args to plugin>" that should fix your problem.
>>
>> Anthony
>>
>> On Tue, Apr 15, 2014 at 1:07 PM, Thomas, Anthony
>> <anthony_h_thomas@brown.edu> wrote:
>>>
>>> Hi Brad,
>>>
>>> I'm no expert with compilers, but to start, when you call your plugin,
>>> you
>>> want to use the syntax "plugin call hello <args to hello>" - see
>>> "http://www.stata.com/plugins/#sect7.";
>>>
>>> Anthony
>>>
>>>
>>> On Tue, Apr 15, 2014 at 12:42 PM, Brad Cable <bscable@ilstu.edu> wrote:
>>>>
>>>> I'm attempting to write a Stata 12 plugin for 64-bit Solaris 10 in a
>>>> non-global zone.  I have downloaded the 2 files "stplugin.h" and
>>>> "stplugin.c" from:
>>>>
>>>> http://www.stata.com/plugins/
>>>>
>>>> I created a "hello.c" file which contains the example test code under
>>>> section 5 on that page, but I can't seem to figure out how to compile it
>>>> correctly.
>>>>
>>>> First, without -m64 it doesn't compile to the right ELF class. Second,
>>>> without -fPIC I get an error when linking the code, and with -fPIC it
>>>> compiles correctly but I get a "r(9998);" return code from Stata when
>>>> trying
>>>> to execute it.  The only thing I've found on the "r(9998);" error is
>>>> this:
>>>>
>>>> http://www.stata.com/statalist/archive/2004-01/msg00650.html
>>>>
>>>> Which is a bit more information, but not quite correct for my purposes
>>>> since I'm not using that compiler, processor, or operating system.
>>>>
>>>> I've tried using Sun's compiler as well with the same results. Here's
>>>> some
>>>> of the output of the compiler commands I've tried:
>>>>
>>>> $ gcc -shared -DSYSTEM=OPUNIX -m64 stplugin.c hello.c -o hello.plugin
>>>> Text relocation remains                         referenced
>>>>      against symbol                  offset      in file
>>>> .text (section)                     0x20        /var/tmp//ccAjvMcv.o
>>>> .text (section)                     0x20        /var/tmp//ccC7rr8G.o
>>>> _stata_                             0xf         /var/tmp//ccAjvMcv.o
>>>> _stata_                             0x12        /var/tmp//ccC7rr8G.o
>>>> .rodata (section)                   0x1a        /var/tmp//ccC7rr8G.o
>>>> ld: fatal: relocations remain against allocatable but non-writable
>>>> sections
>>>> collect2: ld returned 1 exit status
>>>>
>>>>
>>>> $ gcc -shared -DSYSTEM=OPUNIX -m64 -fPIC stplugin.c hello.c -o
>>>> hello.plugin
>>>> $ stata-mp -q
>>>> . program hello, plugin
>>>> . hello
>>>> r(9998);
>>>>
>>>>
>>>> $ cc -shared -DSYSTEM=OPUNIX -m64 stplugin.c hello.c -o hello.plugin
>>>> $ stata-mp -q
>>>> . program hello, plugin
>>>> ld.so.1: stata-mp: fatal: relocation error: R_AMD64_32: file
>>>> ./hello.plugin: sy
>>>>>
>>>>> mbol _stata_: value 0xfffffb7ffedf0000 does not fit
>>>>
>>>> Could not load plugin: ./hello.plugin
>>>> r(9999);
>>>>
>>>>
>>>> $ cc -shared -DSYSTEM=OPUNIX -m64 -KPIC stplugin.c hello.c -o
>>>> hello.plugin
>>>> $ stata-mp -q
>>>> . program hello, plugin
>>>> . hello
>>>> r(9998);
>>>>
>>>>
>>>> The processors are four 8-core Intel Xeon X7560 2.27GHz CPUs.  Stata is
>>>> registered for 32 cores.
>>>>
>>>> Some version info, though both compilers seem to be triggering the
>>>> "r(9998);" error so I'm not sure if this matters or not:
>>>>
>>>> $ gcc --version
>>>> gcc (GCC) 3.4.3 (csl-sol210-3_4-branch+sol_rpath)
>>>> Copyright (C) 2004 Free Software Foundation, Inc.
>>>> This is free software; see the source for copying conditions.  There is
>>>> NO
>>>> warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR
>>>> PURPOSE.
>>>>
>>>>
>>>> $ cc -V
>>>> cc: Sun C 5.11 SunOS_i386 2010/08/13
>>>> usage: cc [ options ] files.  Use 'cc -flags' for details
>>>>
>>>>
>>>> Any help is appreciated, thanks!
>>>> -Brad
>>>> *
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>>>
>>>
>> *
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>
>
> *
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