the 01_all_gcc47_configure.patch pie patch is missing the source hunks (namely the configure.ac pieces)
further, it's slightly buggy. configure spits out:
/var/tmp/portage/cross-x86_64-x32-linux-gnu/gcc-4.7.2/work/gcc-4.7.2/gcc/configure: line 27530: test: =: unary operator expected
which corresponds to a test of enable_esp but apparently that variable hasn't been initialized yet
Have updated the piepatchset to 0.5.4 with the needed fix.
so test if is still there.
the .ac file doesn't match the generated output
the variable is "enable_esp". this comes up a few times.
the indentation on the gcc/configure.ac needs fixing, and it mixes tabs & spaces
i don't see the point in having "set_enable_esp" independent of "enable_esp". just reset the value to "no" if you detect an unsupported case.
also, please keep them in a single patch rather than splitting it up
the code also talks about "x86_x32" targets, but there is no such thing. i'm guessing you want to change "x86_??" (which wouldn't match x86_x32 anyways) to just x86_64. the x32 ABI uses an x86_64-* tuple.
the biggest issues have been fixed, and the older versions are being cycled out, so i guess no need to spend time updating patches we aren't applying anymore