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56 lines
1.7 KiB
Plaintext
56 lines
1.7 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/csky
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case "$machine" in
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csky*)
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abi=`$CC $CFLAGS $CPPFLAGS -E -dM -xc /dev/null |
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sed -n 's/^#define __CSKYABI__ \(.*\)/\1/p'`
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hard_float=`$CC $CFLAGS $CPPFLAGS -E -dM -xc /dev/null |
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sed -n 's/^#define __CSKY_HARD_FLOAT__ \(.*\)/\1/p'`
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hard_float_sf=`$CC $CFLAGS $CPPFLAGS -E -dM -xc /dev/null |
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sed -n 's/^#define __CSKY_HARD_FLOAT_FPU_SF__ \(.*\)/\1/p'`
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hard_float_abi=`$CC $CFLAGS $CPPFLAGS -E -dM -xc /dev/null |
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sed -n 's/^#define __CSKY_HARD_FLOAT_ABI__ \(.*\)/\1/p'`
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case "$abi" in
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1)
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AC_MSG_ERROR([glibc does not support abiv1 yet], [1])
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;;
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2)
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machine=abiv2
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;;
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*)
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AC_MSG_ERROR([Unknown abi], [1])
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;;
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esac
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# __CSKY_HARD_FLOAT_ABI__ was added on gcc 11 to specify whether
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# -mfloat-abi=hard is set. On older gcc, the float ABI is defined solely
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# with __CSKY_HARD_FLOAT__. If __CSKY_HARD_FLOAT__ is set, it can be
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# either a hard-float ABI (gcc older than 11, or gcc11 -mfloat-abi=hard
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# (__CSKY_HARD_FLOAT_ABI__ is set) or -mfloat-abi=softfp
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# (__CSKY_HARD_FLOAT_ABI__ is not set). To be compatible with older gcc,
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# use __CSKY_HARD_FLOAT_FPU_SF__ identify if -mfloat-abi is supported,
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# because it is added to gcc at the same time as -mfloat-abi.
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if test -n "$hard_float"; then
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if test -z "$hard_float_sf"; then
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with_fp_cond=1
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else
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if test -n "$hard_float_abi"; then
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with_fp_cond=1
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else
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with_fp_cond=0
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fi
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fi
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else
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with_fp_cond=0
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fi
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base_machine=csky
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machine=csky/$machine
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AC_DEFINE_UNQUOTED([CSKYABI], [$abi])
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AC_DEFINE_UNQUOTED([CSKY_HARD_FLOAT], [$with_fp_cond])
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;;
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esac
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