[Rd] Windows MinGW compiler clarification, consequences

From: Martin Morgan <mtmorgan_at_fhcrc.org>
Date: Tue 25 Apr 2006 - 23:49:06 GMT


The information at

http://cran.r-project.org/doc/manuals/R-admin.html#The-MinGW-compilers

and

http://www.murdoch-sutherland.com/Rtools/

is slightly inconsistent about the compiler used to build Windows binary packages available through cran.

The 'candidate' package of the recommended MinGW-5.0.0.exe installs g++/g77 3.4.4 (as does the updated installer MinGW-5.0.2.exe). "An alternative..." described on the cran page lists g++/g77 3.4.5. The murdoch-sutherland site says "The release version of gcc-3.4.2 included in MinGW-3.2.0-rc-3 is used by the core developers" and mentions that patches to g77 and to ld are used.

My questions are:

  1. which compiler is actually used for creating windows binary packages available on cran?
  2. Are the patches to g77 and ld still relevant?
  3. what issues are we likely to encounter -- code incompatibility, ???
    • changing from 3.4.2 to the current compiler tools?

As a more specific example, a particular Bioconductor package depends on the cran package odesolve; odesolve has Fortan source files. Example R code in the Bioconductor package evaluates without issues when the .zip file from cran is used, but generates warnings (originating from the Fortran code of odesolve) when compiled locally:

Warning: intdy--  t (=r1) illegal 
Warning: t not in interval tcur - hu (= r1) to tcur (=r2)
Warning: intdy--  t (=r1) illegal 
Warning: t not in interval tcur - hu (= r1) to tcur (=r2)
Warning: lsoda--  trouble from intdy. itask = i1, tout = r1
Error in lsoda(y = y0, times = times, fderiv, parms = c(mod = mod), rtol = 1e-04,  : 
	Illegal input to lsoda


R version: 2.3.0 (2006-04-24)

>gcc --version

gcc (GCC) 3.4.2 (mingw-special)
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.

Thanks for any guidance,

Martin Morgan
Bioconductor



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