[Rd] Tip for removing -c99 when compiling with icc

Bjørn-Helge Mevik b.h.mevik at usit.uio.no
Thu Dec 18 10:14:15 CET 2008

Dear developeRs,

As of icc 10, the -c99 option is deprecated, and generates a lot of
warnings when compiling R or R packages.

If you use CC="icc -std=c99" instead of just CC="icc", R's configure
will not add the -c99 option, and the code seems to compile and run just

(Please don't hesitate to let me know if this is a bad idea. :-)

Bjørn-Helge Mevik

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