i386-mingw32-gcc fails under 10.5.2 PPC

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/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_ports_cross_i386-mingw32-gcc/work/gcc-3.4.5-20060117-1/gcc/config/rs6000/host-darwin.c

/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_ports_cross_i386-mingw32-gcc/work/gcc-3.4.5-20060117-1/gcc/config/rs6000/host-darwin.c:38: warning: 'struct sigaltstack' declared inside parameter list /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_ports_cross_i386-mingw32-gcc/work/gcc-3.4.5-20060117-1/gcc/config/rs6000/host-darwin.c:38: warning: its scope is only this definition or declaration, which is probably not what you want /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_ports_cross_i386-mingw32-gcc/work/gcc-3.4.5-20060117-1/gcc/config/rs6000/host-darwin.c:38: error: conflicting types for 'sigaltstack' /usr/include/signal.h:89: error: previous declaration of 'sigaltstack' was here /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_ports_cross_i386-mingw32-gcc/work/gcc-3.4.5-20060117-1/gcc/config/rs6000/host-darwin.c: In function 'segv_handler': /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_ports_cross_i386-mingw32-gcc/work/gcc-3.4.5-20060117-1/gcc/config/rs6000/host-darwin.c:67: error: 'struct darwin_mcontext' has no member named 'ss' /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_ports_cross_i386-mingw32-gcc/work/gcc-3.4.5-20060117-1/gcc/config/rs6000/host-darwin.c:116: error: 'struct darwin_mcontext' has no member named 'es' /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_ports_cross_i386-mingw32-gcc/work/gcc-3.4.5-20060117-1/gcc/config/rs6000/host-darwin.c:116: error: 'struct darwin_mcontext' has no member named 'ss' /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_ports_cross_i386-mingw32-gcc/work/gcc-3.4.5-20060117-1/gcc/config/rs6000/host-darwin.c: In function 'darwin_rs6000_extra_signals': /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_ports_cross_i386-mingw32-gcc/work/gcc-3.4.5-20060117-1/gcc/config/rs6000/host-darwin.c:130: warning: passing argument 1 of 'sigaltstack' from incompatible pointer type make[1]: * [host-darwin.o] Error 1 make: * [all-gcc] Error 2

Error: The following dependencies failed to build: i386-mingw32-gcc scons Error: Status 1 encountered during processing.