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. --- a/gcc/config/alpha/alpha.h +++ b/gcc/config/alpha/alpha.h @@ -96,6 +96,8 @@ along with GCC; see the file COPYING3. If not see while (0) #endif +#define CPP_SPEC "%{!no-ieee:-mieee}" + /* Run-time compilation parameters selecting different hardware subsets. */ /* Which processor to schedule for. The cpu attribute defines a list that --- a/gcc/config/alpha/alpha.opt +++ b/gcc/config/alpha/alpha.opt @@ -39,7 +39,7 @@ Target RejectNegative Mask(IEEE_CONFORMANT) 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