ARK-OS/arkos/kernel/glibc/sysdeps/riscv/preconfigure

# This file is generated from configure.ac by Autoconf.  DO NOT EDIT!
# Local preconfigure fragment for sysdeps/riscv

case "$machine" in
riscv*)
    xlen=`$CC $CFLAGS $CPPFLAGS -E -dM -xc /dev/null | sed -n 's/^#define __riscv_xlen \(.*\)/\1/p'`
    flen=`$CC $CFLAGS $CPPFLAGS -E -dM -xc /dev/null | sed -n 's/^#define __riscv_flen \(.*\)/\1/p'`
    float_abi=`$CC $CFLAGS $CPPFLAGS -E -dM -xc /dev/null | sed -n 's/^#define __riscv_float_abi_\([^ ]*\) .*/\1/p'`
    atomic=`$CC $CFLAGS $CPPFLAGS -E -dM -xc /dev/null | grep '#define __riscv_atomic' | cut -d' ' -f2`
    vector=`$CC $CFLAGS $CPPFLAGS -E -dM -xc /dev/null | sed -n 's/^#define __riscv_v \(.*\)/\1/p'`

    case "$xlen" in
    64 | 32)
	;;
    *)
	as_fn_error 1 "Unable to determine XLEN" "$LINENO" 5
	;;
    esac

    case "$flen" in
    64)
	float_machine=rvd
	with_fp_cond=1
	;;
    32)
	as_fn_error 1 "glibc does not yet support systems with the F but not D extensions" "$LINENO" 5
	;;
    "")
	with_fp_cond=0
	;;
    *)
	as_fn_error 1 "Unable to determine FLEN" "$LINENO" 5
	;;
    esac

    case "$float_abi" in
    soft)
	abi_flen=0
	;;
    single)
	as_fn_error 1 "glibc does not yet support the single floating-point ABI" "$LINENO" 5
	;;
    double)
	abi_flen=64
	;;
    *)
	as_fn_error 1 "Unable to determine floating-point ABI" "$LINENO" 5
	;;
    esac

    case "$atomic" in
    __riscv_atomic)
	;;
    *)
	as_fn_error 1 "glibc requires the A extension" "$LINENO" 5
	;;
    esac

    if test -n "$vector"; then
	version=`$CC $CFLAGS $CPPFLAGS -E -dM -xc /dev/null | sed -n 's/^#define __GNUC__ \(.*\)/\1/p'`
	test $version -lt 15 && as_fn_error 1 "glibc requires GCC 15 or later for the V extension" "$LINENO" 5
	test $vector -lt "1000000" && as_fn_error 1 "glibc requires at least RVV 1.0 for the V extension" "$LINENO" 5
	float_machine=rvv
    fi

    base_machine=riscv
    machine=riscv/rv$xlen/$float_machine

    printf "%s\n" "#define RISCV_ABI_XLEN $xlen" >>confdefs.h

    printf "%s\n" "#define RISCV_ABI_FLEN $abi_flen" >>confdefs.h

    ;;
esac