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openfst/i586-80bitfp.patch

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From: Jan Engelhardt <jengelh@inai.de>
Date: 2022-04-14 16:00:12.633272404 +0200
Modeled upon a similar patch for opensuse's ICU package.
---
configure.ac | 4 ++--
src/include/fst/float-weight.h | 4 +++-
2 files changed, 5 insertions(+), 3 deletions(-)
Index: openfst-1.8.3/configure.ac
===================================================================
--- openfst-1.8.3.orig/configure.ac
+++ openfst-1.8.3/configure.ac
@@ -160,10 +160,10 @@ AC_RUN_IFELSE([AC_LANG_PROGRAM([
#include <cstdio>
template <typename T>
- bool FloatEqIsReflexive(T m) {
+ bool FloatEqIsReflexive(volatile T m) {
volatile T x = 1.111;
x *= m;
- T y = 1.111;
+ volatile T y = 1.111;
y *= m;
return x == y;
}
Index: openfst-1.8.3/src/include/fst/float-weight.h
===================================================================
--- openfst-1.8.3.orig/src/include/fst/float-weight.h
+++ openfst-1.8.3/src/include/fst/float-weight.h
@@ -121,7 +121,9 @@ constexpr bool operator==(const FloatWei
// register may cause it to compare unequal to that same weight when
// stored to memory. This breaks =='s reflexivity, in turn breaking
// NaturalLess.
-#error "Please compile with -msse -mfpmath=sse, or equivalent."
+// So, store it in memory.
+ volatile T a = w1.Value(), b = w2.Value();
+ return a == b;
#endif
return w1.Value() == w2.Value();
}