kc3-lang/libffi/m4/ax_append_flag.m4

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• Hash : 970b7fce
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  Date : 2019-11-21T05:04:54
  

  Update autoconf-archive m4 macros

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• m4/ax_append_flag.m4

• # ===========================================================================
  #      https://www.gnu.org/software/autoconf-archive/ax_append_flag.html
  # ===========================================================================
  #
  # SYNOPSIS
  #
  #   AX_APPEND_FLAG(FLAG, [FLAGS-VARIABLE])
  #
  # DESCRIPTION
  #
  #   FLAG is appended to the FLAGS-VARIABLE shell variable, with a space
  #   added in between.
  #
  #   If FLAGS-VARIABLE is not specified, the current language's flags (e.g.
  #   CFLAGS) is used.  FLAGS-VARIABLE is not changed if it already contains
  #   FLAG.  If FLAGS-VARIABLE is unset in the shell, it is set to exactly
  #   FLAG.
  #
  #   NOTE: Implementation based on AX_CFLAGS_GCC_OPTION.
  #
  # LICENSE
  #
  #   Copyright (c) 2008 Guido U. Draheim <guidod@gmx.de>
  #   Copyright (c) 2011 Maarten Bosmans <mkbosmans@gmail.com>
  #
  #   Copying and distribution of this file, with or without modification, are
  #   permitted in any medium without royalty provided the copyright notice
  #   and this notice are preserved.  This file is offered as-is, without any
  #   warranty.
  
  #serial 8
  
  AC_DEFUN([AX_APPEND_FLAG],
  [dnl
  AC_PREREQ(2.64)dnl for _AC_LANG_PREFIX and AS_VAR_SET_IF
  AS_VAR_PUSHDEF([FLAGS], [m4_default($2,_AC_LANG_PREFIX[FLAGS])])
  AS_VAR_SET_IF(FLAGS,[
    AS_CASE([" AS_VAR_GET(FLAGS) "],
      [*" $1 "*], [AC_RUN_LOG([: FLAGS already contains $1])],
      [
       AS_VAR_APPEND(FLAGS,[" $1"])
       AC_RUN_LOG([: FLAGS="$FLAGS"])
      ])
    ],
    [
    AS_VAR_SET(FLAGS,[$1])
    AC_RUN_LOG([: FLAGS="$FLAGS"])
    ])
  AS_VAR_POPDEF([FLAGS])dnl
  ])dnl AX_APPEND_FLAG
  

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