Set the default behavior on alpha to use -mieee since the large majority of time we want this (bad/weird things can happen with packages built without it). To satisfy those people who may not want -mieee forced on them all the time, we also provide -mno-ieee. Patch by Mike Frysinger Note: upstream doesn't want to take this due to long standing behavior, and because it'd make behavior across OS's inconsistent: https://gcc.gnu.org/ml/gcc-patches/2003-07/msg02144.html This makes sense for upstream, but Gentoo is more concerned about packages behaving the same across arches under Linux. --- gcc-4_1-branch/gcc/config/alpha/alpha.h +++ gcc-4_1-branch/gcc/config/alpha/alpha.h @@ -96,7 +96,7 @@ while (0) #endif -#define CPP_SPEC "%(cpp_subtarget)" +#define CPP_SPEC "%(cpp_subtarget) %{!no-ieee:-mieee}" #ifndef CPP_SUBTARGET_SPEC #define CPP_SUBTARGET_SPEC "" --- gcc-4_1-branch/gcc/config/alpha/alpha.opt +++ gcc-4_1-branch/gcc/config/alpha/alpha.opt @@ -40,7 +40,7 @@ Request IEEE-conformant math library routines (OSF/1) mieee -Target Report RejectNegative Mask(IEEE) +Target Report Mask(IEEE) Emit IEEE-conformant code, without inexact exceptions mieee-with-inexact