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Diffstat (limited to 'libgcc/configure.ac')
| -rw-r--r-- | libgcc/configure.ac | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/libgcc/configure.ac b/libgcc/configure.ac index 825805d7c6d..2e95e31e390 100644 --- a/libgcc/configure.ac +++ b/libgcc/configure.ac @@ -107,6 +107,42 @@ AC_CACHE_CHECK([whether decimal floating point is supported], [libgcc_cv_dfp], decimal_float=$libgcc_cv_dfp AC_SUBST(decimal_float) +AC_ARG_ENABLE(decimal-float, +[ --enable-decimal-float={no,yes,bid,dpd} + enable decimal float extension to C. Selecting 'bid' + or 'dpd' choses which decimal floating point format + to use], +[ + case $enable_decimal_float in + yes | no | bid | dpd) ;; + *) AC_MSG_ERROR(['$enable_decimal_float' is an invalid value for --enable-decimal-float. +Valid choices are 'yes', 'bid', 'dpd', and 'no'.]) ;; + esac +], +[ + case $target in + powerpc*-*-linux* | i?86*-*-linux* | x86_64*-*-linux*) + enable_decimal_float=yes + ;; + *) + enable_decimal_float=no + ;; + esac +]) + +# x86's use BID format instead of DPD +if test x$enable_decimal_float = xyes; then + case $target in + i?86*-*-linux* | x86_64*-*-linux*) + enable_decimal_float=bid + ;; + *) + enable_decimal_float=dpd + ;; + esac +fi +AC_SUBST(enable_decimal_float) + # Collect host-machine-specific information. . ${srcdir}/config.host |