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added test for C99 vsnprintf

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kojima
2001-09-10 20:55:06 +00:00
parent e848fb0d74
commit 1cd42480bf
1 changed files with 26 additions and 0 deletions
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26
configure.in
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@@ -103,6 +103,32 @@ AC_FUNC_ALLOCA
AC_CHECK_FUNCS(gethostname select poll strerror strcasecmp strncasecmp setpgid atexit mallinfo snprintf vsnprintf asprintf vasprintf mkstemp) AC_CHECK_FUNCS(gethostname select poll strerror strcasecmp strncasecmp setpgid atexit mallinfo snprintf vsnprintf asprintf vasprintf mkstemp)
dnl ripped from samba
dnl
C_CACHE_CHECK([for C99 vsnprintf],_cv_HAVE_C99_VSNPRINTF,[
AC_TRY_RUN([
#include <sys/types.h>
#include <stdarg.h>
void foo(const char *format, ...) {
va_list ap;
int len;
char buf[5];
va_start(ap, format);
len = vsnprintf(0, 0, format, ap);
va_end(ap);
if (len != 5) exit(1);
if (snprintf(buf, 3, "hello") != 5 || strcmp(buf, "he") != 0) exit(1);
exit(0);
}
main() { foo("hello"); }
],
_cv_HAVE_C99_VSNPRINTF=yes,_cv_HAVE_C99_VSNPRINTF=no,_cv_HAVE_C99_VSNPRINTF=cross)])
if test x"$_cv_HAVE_C99_VSNPRINTF" = x"yes"; then
AC_DEFINE(HAVE_C99_VSNPRINTF)
fi
dnl Loading of dynamic libraries at runtime dnl Loading of dynamic libraries at runtime
dnl ======================================= dnl =======================================