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AC_DEFUN([DOVECOT_VA_COPY], [
AC_CACHE_CHECK([for an implementation of va_copy()],lib_cv_va_copy,[
AC_RUN_IFELSE([AC_LANG_SOURCE([[
#include <stdarg.h>
#include <stdlib.h>
void f (int i, ...) {
va_list args1, args2;
va_start (args1, i);
va_copy (args2, args1);
if (va_arg (args2, int) != 42 || va_arg (args1, int) != 42)
exit (1);
va_end (args1); va_end (args2);
}
int main() {
f (0, 42);
return 0;
}]])],
[lib_cv_va_copy=yes],
[lib_cv_va_copy=no],[])
])
AC_CACHE_CHECK([for an implementation of __va_copy()],lib_cv___va_copy,[
AC_RUN_IFELSE([AC_LANG_SOURCE([[
#include <stdarg.h>
#include <stdlib.h>
void f (int i, ...) {
va_list args1, args2;
va_start (args1, i);
__va_copy (args2, args1);
if (va_arg (args2, int) != 42 || va_arg (args1, int) != 42)
exit (1);
va_end (args1); va_end (args2);
}
int main() {
f (0, 42);
return 0;
}]])],
[lib_cv___va_copy=yes],
[lib_cv___va_copy=no],[])
])
if test "x$lib_cv_va_copy" = "xyes"; then
va_copy_func=va_copy
else if test "x$lib_cv___va_copy" = "xyes"; then
va_copy_func=__va_copy
fi
fi
if test -n "$va_copy_func"; then
AC_DEFINE_UNQUOTED(VA_COPY,$va_copy_func,[A 'va_copy' style function])
fi
])
AC_DEFUN([DOVECOT_VA_COPY_BYVAL], [
AC_CACHE_CHECK([whether va_lists can be copied by value],lib_cv_va_val_copy,[
AC_RUN_IFELSE([AC_LANG_SOURCE([[
#include <stdarg.h>
#include <stdlib.h>
void f (int i, ...) {
va_list args1, args2;
va_start (args1, i);
args2 = args1;
if (va_arg (args2, int) != 42 || va_arg (args1, int) != 42)
exit (1);
va_end (args1); va_end (args2);
}
int main() {
f (0, 42);
return 0;
}]])],
[lib_cv_va_val_copy=yes],
[lib_cv_va_val_copy=no],[])
])
if test "x$lib_cv_va_val_copy" = "xno"; then
AC_DEFINE(VA_COPY_AS_ARRAY,1, ['va_lists' cannot be copied as values])
fi
])
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