We used to set it only in machdepCCOpts, so this is more consistent
[
case $$1 in
i386-apple-darwin|powerpc-apple-darwin)
[
case $$1 in
i386-apple-darwin|powerpc-apple-darwin)
- $2="$$2 -m32"
- $3="$$3 -m32"
+ # By default, gcc on OS X will generate SSE
+ # instructions, which need things 16-byte aligned,
+ # but we don't 16-byte align things. Thus drop
+ # back to generic i686 compatibility. Trac #2983.
+ $2="$$2 -march=i686 -m32"
+ $3="$$3 -march=i686 -m32"
;;
x86_64-apple-darwin)
$2="$$2 -m64"
;;
x86_64-apple-darwin)
$2="$$2 -m64"