[Rd] bnlearn package compilation failure on MacOSX
simon.urbanek at r-project.org
Thu Oct 4 23:32:48 CEST 2007
On Oct 4, 2007, at 2:05 PM, Marco Scutari wrote:
> I've recently uploaded a package (bnlearn) to CRAN. It builds fine
> on both Linux (32 and 64 bit) and Windows, but fails on MacOSX ix86
> because of C90 vs C99 issues:
> Since I've no MacOSX machine at hand, I would like to ask you: why
> is C99 not the default for gcc on MacOSX ix86?
It was not deliberate. The current R build (R 2.6.0) was modified to
use -std=gnu99 in the CC section for both architectures instead of
using CFLAGS, that should solve the problem. A work around for older
R is to set PKG_CFLAGS=-std=gnu99 when installing bnlearn.
However, note that C99 compiler is not required for R so it may not
be available. Since you don't really need any advanced functionality
of C99, it may be a good idea to change it to a more portable C code.
> Is it safe to force gcc to use C99 with either -std=c99 o -std=gnu99?
Not in your package as cannot assume gcc in general, but temporarily
for R 2.5.1 on OS X, yes.
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