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