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65 lines
1.5 KiB
Plaintext
65 lines
1.5 KiB
Plaintext
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GLIBC_PROVIDES[]dnl See aclocal.m4 in the top level source directory.
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# Local preconfigure fragment for sysdeps/riscv
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case "$machine" in
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riscv*)
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xlen=`$CC $CFLAGS $CPPFLAGS -E -dM -xc /dev/null | sed -n 's/^#define __riscv_xlen \(.*\)/\1/p'`
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flen=`$CC $CFLAGS $CPPFLAGS -E -dM -xc /dev/null | sed -n 's/^#define __riscv_flen \(.*\)/\1/p'`
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float_abi=`$CC $CFLAGS $CPPFLAGS -E -dM -xc /dev/null | sed -n 's/^#define __riscv_float_abi_\([^ ]*\) .*/\1/p'`
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atomic=`$CC $CFLAGS $CPPFLAGS -E -dM -xc /dev/null | grep '#define __riscv_atomic' | cut -d' ' -f2`
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case "$xlen" in
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64 | 32)
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;;
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*)
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AC_MSG_ERROR([Unable to determine XLEN], [1])
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;;
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esac
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case "$flen" in
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64)
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float_machine=rvd
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with_fp_cond=1
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;;
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32)
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AC_MSG_ERROR([glibc does not yet support systems with the F but not D extensions], 1)
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;;
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"")
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with_fp_cond=0
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;;
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*)
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AC_MSG_ERROR([Unable to determine FLEN], [1])
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;;
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esac
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case "$float_abi" in
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soft)
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abi_flen=0
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;;
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single)
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AC_MSG_ERROR([glibc does not yet support the single floating-point ABI], [1])
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;;
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double)
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abi_flen=64
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;;
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*)
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AC_MSG_ERROR([Unable to determine floating-point ABI], [1])
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;;
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esac
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case "$atomic" in
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__riscv_atomic)
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;;
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*)
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AC_MSG_ERROR([glibc requires the A extension], [1])
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;;
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esac
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base_machine=riscv
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machine=riscv/rv$xlen/$float_machine
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AC_DEFINE_UNQUOTED([RISCV_ABI_XLEN], [$xlen])
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AC_DEFINE_UNQUOTED([RISCV_ABI_FLEN], [$abi_flen])
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;;
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esac
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