github.com/jlmucb/cloudproxy@v0.0.0-20170830161738-b5aa0b619bc4/src/third_party/gflags/m4/ltsugar.m4 (about)

     1  # ltsugar.m4 -- libtool m4 base layer.                         -*-Autoconf-*-
     2  #
     3  # Copyright (C) 2004, 2005, 2007, 2008 Free Software Foundation, Inc.
     4  # Written by Gary V. Vaughan, 2004
     5  #
     6  # This file is free software; the Free Software Foundation gives
     7  # unlimited permission to copy and/or distribute it, with or without
     8  # modifications, as long as this notice is preserved.
     9  
    10  # serial 6 ltsugar.m4
    11  
    12  # This is to help aclocal find these macros, as it can't see m4_define.
    13  AC_DEFUN([LTSUGAR_VERSION], [m4_if([0.1])])
    14  
    15  
    16  # lt_join(SEP, ARG1, [ARG2...])
    17  # -----------------------------
    18  # Produce ARG1SEPARG2...SEPARGn, omitting [] arguments and their
    19  # associated separator.
    20  # Needed until we can rely on m4_join from Autoconf 2.62, since all earlier
    21  # versions in m4sugar had bugs.
    22  m4_define([lt_join],
    23  [m4_if([$#], [1], [],
    24         [$#], [2], [[$2]],
    25         [m4_if([$2], [], [], [[$2]_])$0([$1], m4_shift(m4_shift($@)))])])
    26  m4_define([_lt_join],
    27  [m4_if([$#$2], [2], [],
    28         [m4_if([$2], [], [], [[$1$2]])$0([$1], m4_shift(m4_shift($@)))])])
    29  
    30  
    31  # lt_car(LIST)
    32  # lt_cdr(LIST)
    33  # ------------
    34  # Manipulate m4 lists.
    35  # These macros are necessary as long as will still need to support
    36  # Autoconf-2.59 which quotes differently.
    37  m4_define([lt_car], [[$1]])
    38  m4_define([lt_cdr],
    39  [m4_if([$#], 0, [m4_fatal([$0: cannot be called without arguments])],
    40         [$#], 1, [],
    41         [m4_dquote(m4_shift($@))])])
    42  m4_define([lt_unquote], $1)
    43  
    44  
    45  # lt_append(MACRO-NAME, STRING, [SEPARATOR])
    46  # ------------------------------------------
    47  # Redefine MACRO-NAME to hold its former content plus `SEPARATOR'`STRING'.
    48  # Note that neither SEPARATOR nor STRING are expanded; they are appended
    49  # to MACRO-NAME as is (leaving the expansion for when MACRO-NAME is invoked).
    50  # No SEPARATOR is output if MACRO-NAME was previously undefined (different
    51  # than defined and empty).
    52  #
    53  # This macro is needed until we can rely on Autoconf 2.62, since earlier
    54  # versions of m4sugar mistakenly expanded SEPARATOR but not STRING.
    55  m4_define([lt_append],
    56  [m4_define([$1],
    57  	   m4_ifdef([$1], [m4_defn([$1])[$3]])[$2])])
    58  
    59  
    60  
    61  # lt_combine(SEP, PREFIX-LIST, INFIX, SUFFIX1, [SUFFIX2...])
    62  # ----------------------------------------------------------
    63  # Produce a SEP delimited list of all paired combinations of elements of
    64  # PREFIX-LIST with SUFFIX1 through SUFFIXn.  Each element of the list
    65  # has the form PREFIXmINFIXSUFFIXn.
    66  # Needed until we can rely on m4_combine added in Autoconf 2.62.
    67  m4_define([lt_combine],
    68  [m4_if(m4_eval([$# > 3]), [1],
    69         [m4_pushdef([_Lt_sep], [m4_define([_Lt_sep], m4_defn([lt_car]))])]]dnl
    70  [[m4_foreach([_Lt_prefix], [$2],
    71  	     [m4_foreach([_Lt_suffix],
    72  		]m4_dquote(m4_dquote(m4_shift(m4_shift(m4_shift($@)))))[,
    73  	[_Lt_sep([$1])[]m4_defn([_Lt_prefix])[$3]m4_defn([_Lt_suffix])])])])])
    74  
    75  
    76  # lt_if_append_uniq(MACRO-NAME, VARNAME, [SEPARATOR], [UNIQ], [NOT-UNIQ])
    77  # -----------------------------------------------------------------------
    78  # Iff MACRO-NAME does not yet contain VARNAME, then append it (delimited
    79  # by SEPARATOR if supplied) and expand UNIQ, else NOT-UNIQ.
    80  m4_define([lt_if_append_uniq],
    81  [m4_ifdef([$1],
    82  	  [m4_if(m4_index([$3]m4_defn([$1])[$3], [$3$2$3]), [-1],
    83  		 [lt_append([$1], [$2], [$3])$4],
    84  		 [$5])],
    85  	  [lt_append([$1], [$2], [$3])$4])])
    86  
    87  
    88  # lt_dict_add(DICT, KEY, VALUE)
    89  # -----------------------------
    90  m4_define([lt_dict_add],
    91  [m4_define([$1($2)], [$3])])
    92  
    93  
    94  # lt_dict_add_subkey(DICT, KEY, SUBKEY, VALUE)
    95  # --------------------------------------------
    96  m4_define([lt_dict_add_subkey],
    97  [m4_define([$1($2:$3)], [$4])])
    98  
    99  
   100  # lt_dict_fetch(DICT, KEY, [SUBKEY])
   101  # ----------------------------------
   102  m4_define([lt_dict_fetch],
   103  [m4_ifval([$3],
   104  	m4_ifdef([$1($2:$3)], [m4_defn([$1($2:$3)])]),
   105      m4_ifdef([$1($2)], [m4_defn([$1($2)])]))])
   106  
   107  
   108  # lt_if_dict_fetch(DICT, KEY, [SUBKEY], VALUE, IF-TRUE, [IF-FALSE])
   109  # -----------------------------------------------------------------
   110  m4_define([lt_if_dict_fetch],
   111  [m4_if(lt_dict_fetch([$1], [$2], [$3]), [$4],
   112  	[$5],
   113      [$6])])
   114  
   115  
   116  # lt_dict_filter(DICT, [SUBKEY], VALUE, [SEPARATOR], KEY, [...])
   117  # --------------------------------------------------------------
   118  m4_define([lt_dict_filter],
   119  [m4_if([$5], [], [],
   120    [lt_join(m4_quote(m4_default([$4], [[, ]])),
   121             lt_unquote(m4_split(m4_normalize(m4_foreach(_Lt_key, lt_car([m4_shiftn(4, $@)]),
   122  		      [lt_if_dict_fetch([$1], _Lt_key, [$2], [$3], [_Lt_key ])])))))])[]dnl
   123  ])