[Rcpp-devel] [PATCH] Be more liberal in accepting pre-processor defines for 64-bit HAS_LONG_LONG

[Dirk Eddelbuettel]

On 11 September 2013 at 19:05, Murray Stokely wrote:
| The default llvm/clang compiler on MacOS X 10.8 doesn't get 64-bit support with
| Rcpp because compilers.h is specifically looking for -std=c++0x as is required
| by some versions of gcc.
| 
| This is overly restrictive as e.g. __LP64__ platforms with _LONG_LONG_MAX set
| will also certainly have a suitable long long type.

__LP64__ is the opposite, and too generous. It gets eg turned on by my
default (non -std=c++0x) build with g++.  

Per  http://gcc.gnu.org/onlinedocs/cpp/Common-Predefined-Macros.html it seems
__LP64__ is a standard GNU extension.

So I think we need something better. Is there something that is true IFF both
clang and c++11 are selected?

Dirk
 
| Patch attached or at :
| 
| http://www.stokely.org/patches/compiler.int64.diff
| 
|       - Murray
| xuntyped binary data, compiler.int64 [Click mouse-2 to save to a file]
| _______________________________________________
| Rcpp-devel mailing list
| Rcpp-devel at lists.r-forge.r-project.org
| https://lists.r-forge.r-project.org/cgi-bin/mailman/listinfo/rcpp-devel
-- 
Dirk Eddelbuettel | edd at debian.org | http://dirk.eddelbuettel.com