28 lines
828 B
Plaintext
28 lines
828 B
Plaintext
AC_DEFUN([AC_FUNC_MEMMOVE],
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[AC_CHECK_FUNCS(memmove)
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AC_MSG_CHECKING(for working memmove)
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AC_CACHE_VAL(ac_cv_have_working_memmove,
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[AC_TRY_RUN(
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[#include <stdio.h>
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int main(void)
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{
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char buf[10];
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strcpy (buf, "01234567");
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memmove (buf, buf + 2, 3);
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if (strcmp (buf, "23434567"))
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exit (1);
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strcpy (buf, "01234567");
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memmove (buf + 2, buf, 3);
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if (strcmp (buf, "01012567"))
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exit (1);
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exit (0);
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}], ac_cv_have_working_memmove=yes, ac_cv_have_working_memmove=no, ac_cv_have_working_memmove=cross)])
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AC_MSG_RESULT([$ac_cv_have_working_memmove])
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if test x$ac_cv_have_working_memmove != "xyes"; then
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AC_LIBOBJ(memmove)
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AC_MSG_WARN([Replacing missing/broken memmove.])
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AC_DEFINE(PREFER_PORTABLE_MEMMOVE, 1, "enable replacement memmove if system memmove is broken or missing")
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fi])
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