mirror of git://gcc.gnu.org/git/gcc.git
58 lines
1.5 KiB
Plaintext
58 lines
1.5 KiB
Plaintext
dnl @synopsis GCC_AC_ENABLE_DECIMAL_FLOAT([target triplet])
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dnl
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dnl Enable C extension for decimal float if target supports it.
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dnl
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dnl @author Andreas Krebbel <Andreas.Krebbel@de.ibm.com>
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AC_DEFUN([GCC_AC_ENABLE_DECIMAL_FLOAT],
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[
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AC_ARG_ENABLE(decimal-float,
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[ --enable-decimal-float={no,yes,bid,dpd}
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enable decimal float extension to C. Selecting 'bid'
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or 'dpd' choses which decimal floating point format
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to use],
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[
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case $enable_decimal_float in
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yes | no | bid | dpd) default_decimal_float=$enable_decimal_float ;;
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*) AC_MSG_ERROR(['$enable_decimal_float' is an invalid value for --enable-decimal-float.
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Valid choices are 'yes', 'bid', 'dpd', and 'no'.]) ;;
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esac
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],
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[
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case $1 in
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powerpc*-*-linux* | i?86*-*-linux* | x86_64*-*-linux* | s390*-*-linux* | \
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i?86*-*-elfiamcu | i?86*-*-gnu* | x86_64*-*-gnu* | \
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i?86*-*-mingw* | x86_64*-*-mingw* | \
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i?86*-*-cygwin* | x86_64*-*-cygwin*)
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enable_decimal_float=yes
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;;
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*)
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AC_MSG_WARN([decimal float is not supported for this target, ignored])
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enable_decimal_float=no
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;;
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esac
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])
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# x86's use BID format instead of DPD
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case x$enable_decimal_float in
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xyes)
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case $1 in
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i?86*-*-* | x86_64*-*-*)
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enable_decimal_float=bid
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;;
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*)
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enable_decimal_float=dpd
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;;
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esac
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default_decimal_float=$enable_decimal_float
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;;
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xno)
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# ENABLE_DECIMAL_FLOAT is set to 0. But we have to have proper
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# dependency on libdecnumber.
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default_decimal_float=dpd
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;;
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esac
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AC_SUBST(enable_decimal_float)
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])
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