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537fd3fab4
To be honest, it might just be time to plain assume these, but...? Signed-off-by: H. Peter Anvin (Intel) <hpa@zytor.com>
38 lines
1.2 KiB
Plaintext
38 lines
1.2 KiB
Plaintext
dnl --------------------------------------------------------------------------
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dnl PA_FUNC_SNPRINTF
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dnl
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dnl See if we have [_]snprintf(), using the proper prototypes in case
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dnl it is a builtin of some kind.
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dnl --------------------------------------------------------------------------
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AC_DEFUN([PA_FUNC_SNPRINTF],
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[AC_CACHE_CHECK([for sprintf], [pa_cv_func_snprintf],
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[pa_cv_func_snprintf=no
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for pa_try_func_snprintf in snprintf _snprintf
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do
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AS_IF([test $pa_cv_func_snprintf = no],
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[AC_LINK_IFELSE([AC_LANG_PROGRAM([
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AC_INCLUDES_DEFAULT
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[
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const char *snprintf_test(int x);
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const char *snprintf_test(int x)
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{
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static char buf[256];
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size_t sz;
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sz = $pa_try_func_snprintf(buf, sizeof buf, "Hello = %d", x);
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return (sz < sizeof buf) ? buf : NULL;
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}
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]],[[
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puts(snprintf_test(33));
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]])],
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[pa_cv_func_snprintf=$pa_try_func_snprintf])])
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done
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])
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AS_IF([test $pa_cv_func_snprintf = no],
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[],
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[AC_DEFINE([HAVE_SNPRINTF], 1,
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[Define to 1 if you have some version of the snprintf function.])
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AS_IF([test $pa_cv_func_snprintf = snprintf],
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[],
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[AC_DEFINE_UNQUOTED([snprintf], [$pa_cv_func_snprintf],
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[Define if your snprintf function is not named snprintf.])])])])
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