mirror of git://sourceware.org/git/glibc.git
63 lines
1.9 KiB
Plaintext
63 lines
1.9 KiB
Plaintext
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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soft_float=`$CC $CFLAGS $CPPFLAGS -E -dM -xc /dev/null |
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sed -n 's/^#define __CSKY_SOFT_FLOAT__ \(.*\)/\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 "$abi" in
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1)
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AC_MSG_ERROR([glibc does not support abiv1 yet], [1])
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;;
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2)
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machine=abiv2
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;;
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*)
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AC_MSG_ERROR([Unknown abi], [1])
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;;
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esac
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# This check is for compatibility with GCC versions earlier than 11.
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# The older versions of C-SKY GCC do not support the '-mfloat-abi=softfp' option
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# and never define the '__CSKY_HARD_FLOAT_ABI__'.
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# Therefore, if a check for '-mfloat-abi=softfp' is added as the expression
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# 'defined(__CSKY_HARD_FLOAT__) && !defined(__CSKY_HARD_FLOAT_ABI__)'
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# which is correct for newer versions of GCC will not work for those older versions.
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# Since no expression compatible with all versions of GCC exists,
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# a check for the '-mfloat-abi=softfp' option is added.
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if AC_TRY_COMMAND(${CC-cc} -S -mfloat-abi=softfp /dev/null 1>&AS_MESSAGE_LOG_FD); then
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soft_float_abi_support=1
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else
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soft_float_abi_support=0
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fi
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if test -n "$soft_float"; then
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with_fp_cond=0
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with_hard_float_abi=0
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else
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with_fp_cond=1
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if test -n "$soft_float_abi_support"; then
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if test -n "$hard_float_abi"; then
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with_hard_float_abi=1
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else
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with_hard_float_abi=0
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fi
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else
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with_hard_float_abi=1
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fi
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fi
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base_machine=csky
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machine=csky/$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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AC_DEFINE_UNQUOTED([CSKY_HARD_FLOAT_ABI], [$with_hard_float_abi])
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;;
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esac
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