diff options
Diffstat (limited to 'libgcc/configure.ac')
| -rw-r--r-- | libgcc/configure.ac | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/libgcc/configure.ac b/libgcc/configure.ac index 186cd6e9cd7..560e988e048 100644 --- a/libgcc/configure.ac +++ b/libgcc/configure.ac @@ -182,7 +182,14 @@ AC_SUBST(long_double_type_size) # Check for decimal float support. AC_CACHE_CHECK([whether decimal floating point is supported], [libgcc_cv_dfp], - [AC_COMPILE_IFELSE([_Decimal32 x;], [libgcc_cv_dfp=yes], + [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ +#include <fenv.h> +]], [[ +_Decimal32 x; +int fe_except = + FE_INVALID|FE_DIVBYZERO|FE_OVERFLOW|FE_UNDERFLOW|FE_INEXACT; +]])], + [libgcc_cv_dfp=yes], [libgcc_cv_dfp=no])]) decimal_float=$libgcc_cv_dfp AC_SUBST(decimal_float) |