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fix superh nofpu check on old gcc versions

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As far as gcc3 knows, sh4 is the only processor version that can have an
FPU, so it indicates the FPU's presence by defining __SH4__.  This is not
defined if there is no FPU, even if the processor really is an SH4.

Starting with gcc4, there is support for the sh2a processor, which has an
FPU but is not an SH4.  gcc4 therefore additionally defines __SH_FPU_ANY__
when there is an FPU, but still doesn't define __SH4__ for an FPU-less sh4.

Therefore, to support all gcc versions, we must look at both preprocessor
symbols.
This commit is contained in:
Bobby Bingham 2014-04-27 21:13:59 -05:00
parent c3d9d172b1
commit 23d64182d8
1 changed files with 1 additions and 1 deletions

2
configure vendored

@ -429,7 +429,7 @@ test "$ARCH" = "microblaze" && trycppif __MICROBLAZEEL__ "$t" \
if test "$ARCH" = "sh" ; then
trycppif __BIG_ENDIAN__ "$t" && SUBARCH=${SUBARCH}eb
if trycppif __SH_FPU_ANY__ "$t" ; then
if trycppif "__SH_FPU_ANY__ || __SH4__" "$t" ; then
# Some sh configurations are broken and replace double with float
# rather than using softfloat when the fpu is present but only
# supports single precision. Reject them.