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handling -march=invalidarch option in GCC driver


Following only handles the valid values of -march or
if the -march is not given at all
#define LINK_SPEC   "\
%{march=small: -lsmall } \
%{march=big: -lbig } \
%{!march*:%(link_default)}"

but how to handle the situation if we want to
link_default in case -march=someinvalidarch is given
on the command line.

M



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