[Rd] Can configure.ac detect 64 bit R?

From: <jhallman_at_frb.gov>
Date: Tue, 05 Jun 2007 11:37:17 -0400

My fame package has to link to the libchli.so that comes with FAME. However, FAME is now supplying both 32 and 64 bit versions of the library. The 32-bit version is $FAME/hli/libchli.so while the 64-bit version is $FAME/hli/64/libchli.so. To set the right flags, it seems that I need to know, from within configure.ac, whether the R installation is 32 bit or 64 bit. Is there a way to detect this?


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