21 lines
483 B
Plaintext
21 lines
483 B
Plaintext
AC_DEFUN([EFL_CHECK_GCC_BUILTIN],
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[efl_check_gcc_builtin_save_libs=$LIBS
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LIBS="-lm $LIBS"
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AC_LINK_IFELSE(
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[AC_LANG_PROGRAM(
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[[#ifndef __GNUC__
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choke me
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#else
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#undef $1
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/* Declare this function with same prototype as __builtin_$1.
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This removes warning about conflicting type with builtin */
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__typeof__(__builtin_$1) $1;
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__typeof__(__builtin_$1) *f = $1;
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#endif
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]], [[return f != $1;]]
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)],
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[AC_DEFINE([$2], [123], [GCC builtin $1 exists])])
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LIBS=$efl_check_gcc_builtin_save_libs])
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