SGI IRIX gcc 4.7

hi I am trying to build gcc v4.7 on a remote IRIX machine (not my property, thus I can't access it 24h/7) with these (1) gnu-files, patch, and scrips (you can see how things are configured for compilation) I am stopped at the ppl v0.11 stage with the following error that I am not able to understand neither to solve any hint? thanks /usr/nekoware/gcc-4.7/lib/gcc/mips-sgi-irix6.5/4.7.1/../../../../include/c++/4.7.1/cmath: In function 'typename __gnu_cxx::__enable_if<std::__is_arithmetic<_Tp>::__value, int>::__type std::fpclassify(_Tp)': /usr/nekoware/gcc-4.7/lib/gcc/mips-sgi-irix6.5/4.7.1/../../../../include/c++/4.7.1/cmath:814:35: error: 'FP_NAN' was not declared in this scope /usr/nekoware/gcc-4.7/lib/gcc/mips-sgi-irix6.5/4.7.1/../../../../include/c++/4.7.1/cmath:814:43: error: 'FP_INFINITE' was not declared in this scope /usr/nekoware/gcc-4.7/lib/gcc/mips-sgi-irix6.5/4.7.1/../../../../include/c++/4.7.1/cmath:814:56: error: 'FP_NORMAL' was not declared in this scope /usr/nekoware/gcc-4.7/lib/gcc/mips-sgi-irix6.5/4.7.1/../../../../include/c++/4.7.1/cmath:815:7: error: 'FP_SUBNORMAL' was not declared in this scope /usr/nekoware/gcc-4.7/lib/gcc/mips-sgi-irix6.5/4.7.1/../../../../include/c++/4.7.1/cmath:815:21: error: 'FP_ZERO' was not declared in this scope gmake[3]: *** [Box.lo] Error 1 gmake[3]: Leaving directory `/root/ghdl-for-irix/prereq/new-gcc-v4.7/ppl-0.11-build/src' gmake[2]: *** [all] Error 2 gmake[2]: Leaving directory `/root/ghdl-for-irix/prereq/new-gcc-v4.7/ppl-0.11-build/src' gmake[1]: *** [all-recursive] Error 1 gmake[1]: Leaving directory `/root/ghdl-for-irix/prereq/new-gcc-v4.7/ppl-0.11-build' gmake: *** [all] Error 2 (1) http://www.downthebunker.xyz/wonderland/chunk_of/stuff/public/retrocomputin…