In the GNU autoconf-generated configure script, there is a variable called "cross_compiling". This will be set to "yes" when you cross-compile. Now in most cases this is detected by the mechanism there, for example if we cross-compile from linux to mingw, or from amd64 to an arm machine. But there are subtle cases where this won't be detected, which is common in computational cluster. This is the case with many Cray machines. The front-end, where we compile, is a standard Linux platform with a relatively recent AMD64 Opteron processor. But the compute nodes, where we target the compilation for, have Compute Node Linux OS (a specially stripped-down LInux) and sport the newest AMD64 Opteron processor, whose instruction set supersedes the front-end one. As a result, the generated executable must not be run on the front end.
How do I go about in this case, telling the configure script that this is a cross compilation? I believe that in all cases, they will give the same "x86_64-unknown-linux-gnu" build and target host triplets. -- Wirawan Purwanto Research Scientist College of William and Mary Physics Department Williamsburg, VA 23187 _______________________________________________ Autoconf mailing list Autoconf@gnu.org https://lists.gnu.org/mailman/listinfo/autoconf
