[gmx-users] Compilation problem with 3.2

[Ross Nobes]

Dear All,

I have come across a problem in trying to build version 3.2 on a Fujitsu
Solaris machine. In src/gmxlib/index.c, the array chains is declared thus:

  /* array of arrays of atomnames: */
  const char **chains[] = { NULL,pnoh,calpha,bb,mc,mcb,mch,mch,mch,pnodum };

In order for the initializer to be a constant expression (in the strict
sense that the compiler must be able to evaluate the expression), all of
pnoh, calpha, bb, mc, mcb, mch and pnodum should be declared as static, e.g.

 static const char *pnoh[]    = { "H" };
 
(In 3.1.4, these arrays were indeed declared as static, but this has been
changed in 3.2.) Most compilers let the user get away with this sort of
thing - in fact the standard says

"An implementation may accept other forms of constant expressions."

but the Fujitsu compiler unfortunately sticks rigidly to the standard. Would
it be possible to revert to static storage for these arrays in future
release of GROMACS?

Cheers,
Ross
 
--
Ross Nobes
Manager, Physical and Life Sciences Research Group
Fujitsu Laboratories of Europe
Hayes Park Central, Hayes End Road
Hayes, Middlesex UB4 8FE, UK
Phone +44 (0) 77 7195 6113
Fax +44 (0) 20 8606 4539
E-mail R.Nobes at fle.fujitsu.com


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