This is something that needs to be discussed. A single user alone shouldn't
warrant such major change in a port. You always have to keep in mind that
changing the default compiler options also has potential impact on the
performance on more modern ppc64 systems like Apple Macintosh.
Not sure how modern an Apple Mac is but here is a photo I took only a
few minutes ago:
https://i.imgur.com/6UbviKb.jpg
I have this old Mac G5 running as a fine example of a big-endian machine
and the PPC970MP processors in it seem to work very well. However it is
certainly becoming difficult to get results from it that can compare to
what I get from some other machines like Fujitsu SPARC for example. The
biggest complaint is with floating point wherein the data representation
may be actual IEEE 754-2008 style or some new IBM variant that I am not
at all familiar with. In fact, some code, trivial, won't compile at all
if I try to use "IEEE extended precision long double" with very few ways
to get around that :
gcc -mcpu=970 -mno-altivec -m64 -std=iso9899:1999 -Wfatal-errors \
-pedantic-errors -mabi=ieeelongdouble ...
The gcc that I am using claims to be :
GNU C99 (Debian 7.2.0-17) version 7.2.1 20171205 (powerpc64-linux-gnu)
compiled by GNU C version 7.2.1 20171205, GMP version 6.1.2,
MPFR version 3.1.6, MPC version 1.0.3, isl version isl-0.18-GMP
... snip ...