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26 lines
569 B
Plaintext
26 lines
569 B
Plaintext
#serial 2
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dnl From Paul Eggert.
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AC_DEFUN(AC_C_BACKSLASH_A,
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[
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AC_CACHE_CHECK([whether backslash-a works in strings], ac_cv_c_backslash_a,
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[AC_TRY_COMPILE([],
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changequote(<<, >>)dnl
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<<
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#if '\a' == 'a'
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syntax error;
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#endif
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char buf['\a' == 'a' ? -1 : 1];
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buf[0] = '\a';
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return buf[0] != "\a"[0];
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>>,
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changequote([, ])dnl
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ac_cv_c_backslash_a=yes,
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ac_cv_c_backslash_a=no)])
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if test $ac_cv_c_backslash_a = yes; then
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AC_DEFINE(HAVE_C_BACKSLASH_A, 1,
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[Define if backslash-a works in C strings.])
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fi
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])
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