kc3-lang/gnulib/m4/va-args.m4

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• Hash : 32a72f45
  Author :
  Date : 2023-01-01T01:14:21
  

  maint: run 'make update-copyright'
  

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• m4/va-args.m4

• # va-args.m4 serial 1
  dnl Copyright (C) 2009-2023 Free Software Foundation, Inc.
  dnl This file is free software; the Free Software Foundation
  dnl gives unlimited permission to copy and/or distribute it,
  dnl with or without modifications, as long as this notice is preserved.
  
  dnl Test for variadic macro support.
  dnl Define HAVE_VA_ARGS if macros can use __VA_ARGS__.
  AC_DEFUN([gl_VA_ARGS],
  [
    AC_CACHE_CHECK([whether the preprocessor allows variadic macros],
      [gl_cv_c_va_args],
      [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
         #include <stdio.h>
         #define a(func, arg, ...) func (arg, __VA_ARGS__)
         #define b(...) a (__VA_ARGS__)
        ]], [[b (printf, "%s", "test");]])],
        [gl_cv_c_va_args=yes], [gl_cv_c_va_args=no])
      ])
    if test $gl_cv_c_va_args = yes; then
      AC_DEFINE([HAVE_VA_ARGS], [1],
        [Define to 1 if the preprocessor supports variadic macros and
         __VA_ARGS__.])
    fi
  ])
  

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