[thirdparty/gcc.git] / ltsugar.m4

# ltsugar.m4 -- libtool m4 base layer.                         -*-Autoconf-*-
#
# Copyright (C) 2004, 2005, 2007 Free Software Foundation, Inc.
# Written by Gary V. Vaughan.
#
# This file is free software; the Free Software Foundation gives
# unlimited permission to copy and/or distribute it, with or without
# modifications, as long as this notice is preserved.

# serial 4 ltsugar.m4

# This is to help aclocal find these macros, as it can't see m4_define.
AC_DEFUN([LTSUGAR_VERSION], [m4_if([0.1])])


# lt_join(SEP, ARG1, [ARG2...])
# -----------------------------
# Produce ARG1SEPARG2...SEPARGn, omitting [] arguments and their
# associated separator.
m4_define([lt_join],
[m4_case([$#],
	 [0], [m4_fatal([$0: too few arguments: $#])],
	 [1], [],
	 [2], [[$2]],
	 [m4_ifval([$2],
	 	   [[$2][]m4_foreach(_lt_Arg, lt_car([m4_shiftn(2, $@)]),
	                   [_$0([$1], _lt_Arg)])],
		   [$0([$1], m4_shiftn(2, $@))])])[]dnl
])
m4_define([_lt_join],
[m4_ifval([$2],[$1][$2])[]dnl
])


# lt_car(LIST)
# lt_cdr(LIST)
# ------------
# Manipulate m4 lists.
# These macros are necessary as long as will still need to support
# Autoconf-2.59 which quotes differently.
m4_define([lt_car], [[$1]])
m4_define([lt_cdr],
[m4_if([$#], 0, [m4_fatal([$0: cannot be called without arguments])],
       [$#], 1, [],
       [m4_dquote(m4_shift($@))])])
m4_define([lt_unquote], $1)


# lt_append(MACRO-NAME, STRING, [SEPARATOR])
# ------------------------------------------
# Redefine MACRO-NAME to hold its former content plus `SEPARATOR'`STRING'.
# Note that neither SEPARATOR nor STRING are expanded.  No SEPARATOR is
# output if MACRO-NAME was previously undefined (different than defined
# and empty).
# This macro is needed until we can rely on Autoconf 2.62, since earlier
# versions of m4 mistakenly expanded SEPARATOR.
m4_define([lt_append],
[m4_define([$1],
	   m4_ifdef([$1], [m4_defn([$1])[$3]])[$2])])


# lt_combine(SEP, PREFIX-LIST, INFIX, SUFFIX1, [SUFFIX2...])
# ----------------------------------------------------------
# Produce a SEP delimited list of all paired combinations of elements of
# PREFIX-LIST with SUFFIX1 through SUFFIXn.  Each element of the list
# has the form PREFIXmINFIXSUFFIXn.
m4_define([lt_combine],
[m4_if([$2], [], [],
  [m4_if([$4], [], [],
    [lt_join(m4_quote(m4_default([$1], [[, ]])),
      lt_unquote(m4_split(m4_normalize(m4_foreach(_Lt_prefix, [$2],
       		   [m4_foreach(_Lt_suffix, lt_car([m4_shiftn(3, $@)]),
		   	       [_Lt_prefix[]$3[]_Lt_suffix ])])))))])])dnl
])


# lt_if_append_uniq(MACRO-NAME, VARNAME, [SEPARATOR], [UNIQ], [NOT-UNIQ])
# -----------------------------------------------------------------------
# Iff MACRO-NAME does not yet contain VARNAME, then append it (delimited
# by SEPARATOR if supplied) and expand UNIQ, else NOT-UNIQ.
m4_define([lt_if_append_uniq],
[m4_ifdef([$1],
	  [m4_if(m4_index([$3]m4_defn([$1])[$3], [$3$2$3]), [-1],
		 [lt_append([$1], [$2], [$3])$4],
		 [$5])],
    [lt_append([$1], [$2], [$3])$4])])


# lt_dict_add(DICT, KEY, VALUE)
# -----------------------------
m4_define([lt_dict_add],
[m4_define([$1($2)], [$4])])


# lt_dict_add_subkey(DICT, KEY, SUBKEY, VALUE)
# --------------------------------------------
m4_define([lt_dict_add_subkey],
[m4_define([$1($2:$3)], [$4])])


# lt_dict_fetch(DICT, KEY, [SUBKEY])
# ----------------------------------
m4_define([lt_dict_fetch],
[m4_ifval([$3],
	m4_ifdef([$1($2:$3)], [m4_defn([$1($2:$3)])]),
    m4_ifdef([$1($2)], [m4_defn([$1($2)])]))])


# lt_if_dict_fetch(DICT, KEY, [SUBKEY], VALUE, IF-TRUE, [IF-FALSE])
# -----------------------------------------------------------------
m4_define([lt_if_dict_fetch],
[m4_if(lt_dict_fetch([$1], [$2], [$3]), [$4],
	[$5],
    [$6])])


# lt_dict_filter(DICT, [SUBKEY], VALUE, [SEPARATOR], KEY, [...])
# --------------------------------------------------------------
m4_define([lt_dict_filter],
[m4_if([$5], [], [],
  [lt_join(m4_quote(m4_default([$4], [[, ]])),
           lt_unquote(m4_split(m4_normalize(m4_foreach(_Lt_key, lt_car([m4_shiftn(4, $@)]),
		      [lt_if_dict_fetch([$1], _Lt_key, [$2], [$3], [_Lt_key ])])))))])[]dnl
])
Commit	Line	Data
1cf3d07d SE	1	# ltsugar.m4 -- libtool m4 base layer. --Autoconf--
1cf3d07d SE	2	#
32bc4cf4	3	# Copyright (C) 2004, 2005, 2007 Free Software Foundation, Inc.
1cf3d07d SE	4	# Written by Gary V. Vaughan.
	5	#
	6	# This file is free software; the Free Software Foundation gives
	7	# unlimited permission to copy and/or distribute it, with or without
	8	# modifications, as long as this notice is preserved.
	9
32bc4cf4	10	# serial 4 ltsugar.m4
1cf3d07d SE	11
	12	# This is to help aclocal find these macros, as it can't see m4_define.
	13	AC_DEFUN([LTSUGAR_VERSION], [m4_if([0.1])])
	14
	15
	16	# lt_join(SEP, ARG1, [ARG2...])
	17	# -----------------------------
	18	# Produce ARG1SEPARG2...SEPARGn, omitting [] arguments and their
	19	# associated separator.
	20	m4_define([lt_join],
	21	[m4_case([$#],
	22	[0], [m4_fatal([$0: too few arguments: $#])],
	23	[1], [],
	24	[2], [[$2]],
	25	[m4_ifval([$2],
	26	[[$2][]m4_foreach(_lt_Arg, lt_car([m4_shiftn(2, $@)]),
	27	[_$0([$1], _lt_Arg)])],
	28	[$0([$1], m4_shiftn(2, $@))])])[]dnl
	29	])
	30	m4_define([_lt_join],
	31	[m4_ifval([$2],[$1][$2])[]dnl
	32	])
	33
	34
	35	# lt_car(LIST)
	36	# lt_cdr(LIST)
	37	# ------------
	38	# Manipulate m4 lists.
	39	# These macros are necessary as long as will still need to support
	40	# Autoconf-2.59 which quotes differently.
	41	m4_define([lt_car], [[$1]])
	42	m4_define([lt_cdr],
	43	[m4_if([$#], 0, [m4_fatal([$0: cannot be called without arguments])],
	44	[$#], 1, [],
	45	[m4_dquote(m4_shift($@))])])
	46	m4_define([lt_unquote], $1)
	47
	48
32bc4cf4 RW	49	# lt_append(MACRO-NAME, STRING, [SEPARATOR])
	50	# ------------------------------------------
	51	# Redefine MACRO-NAME to hold its former content plus `SEPARATOR'`STRING'.
	52	# Note that neither SEPARATOR nor STRING are expanded. No SEPARATOR is
	53	# output if MACRO-NAME was previously undefined (different than defined
	54	# and empty).
	55	# This macro is needed until we can rely on Autoconf 2.62, since earlier
	56	# versions of m4 mistakenly expanded SEPARATOR.
	57	m4_define([lt_append],
	58	[m4_define([$1],
	59	m4_ifdef([$1], [m4_defn([$1])[$3]])[$2])])
	60
	61
	62
1cf3d07d SE	63	# lt_combine(SEP, PREFIX-LIST, INFIX, SUFFIX1, [SUFFIX2...])
	64	# ----------------------------------------------------------
	65	# Produce a SEP delimited list of all paired combinations of elements of
	66	# PREFIX-LIST with SUFFIX1 through SUFFIXn. Each element of the list
	67	# has the form PREFIXmINFIXSUFFIXn.
	68	m4_define([lt_combine],
	69	[m4_if([$2], [], [],
	70	[m4_if([$4], [], [],
	71	[lt_join(m4_quote(m4_default([$1], [[, ]])),
	72	lt_unquote(m4_split(m4_normalize(m4_foreach(_Lt_prefix, [$2],
	73	[m4_foreach(_Lt_suffix, lt_car([m4_shiftn(3, $@)]),
	74	[_Lt_prefix[]$3[]_Lt_suffix ])])))))])])dnl
	75	])
	76
	77
	78	# lt_if_append_uniq(MACRO-NAME, VARNAME, [SEPARATOR], [UNIQ], [NOT-UNIQ])
	79	# -----------------------------------------------------------------------
	80	# Iff MACRO-NAME does not yet contain VARNAME, then append it (delimited
	81	# by SEPARATOR if supplied) and expand UNIQ, else NOT-UNIQ.
	82	m4_define([lt_if_append_uniq],
	83	[m4_ifdef([$1],
32bc4cf4 RW	84	[m4_if(m4_index([$3]m4_defn([$1])[$3], [$3$2$3]), [-1],
	85	[lt_append([$1], [$2], [$3])$4],
	86	[$5])],
	87	[lt_append([$1], [$2], [$3])$4])])
1cf3d07d SE	88
	89
	90	# lt_dict_add(DICT, KEY, VALUE)
	91	# -----------------------------
	92	m4_define([lt_dict_add],
	93	[m4_define([$1($2)], [$4])])
	94
	95
	96	# lt_dict_add_subkey(DICT, KEY, SUBKEY, VALUE)
	97	# --------------------------------------------
	98	m4_define([lt_dict_add_subkey],
	99	[m4_define([$1($2:$3)], [$4])])
	100
	101
	102	# lt_dict_fetch(DICT, KEY, [SUBKEY])
	103	# ----------------------------------
	104	m4_define([lt_dict_fetch],
	105	[m4_ifval([$3],
	106	m4_ifdef([$1($2:$3)], [m4_defn([$1($2:$3)])]),
	107	m4_ifdef([$1($2)], [m4_defn([$1($2)])]))])
	108
	109
	110	# lt_if_dict_fetch(DICT, KEY, [SUBKEY], VALUE, IF-TRUE, [IF-FALSE])
	111	# -----------------------------------------------------------------
	112	m4_define([lt_if_dict_fetch],
	113	[m4_if(lt_dict_fetch([$1], [$2], [$3]), [$4],
	114	[$5],
	115	[$6])])
	116
	117
	118	# lt_dict_filter(DICT, [SUBKEY], VALUE, [SEPARATOR], KEY, [...])
	119	# --------------------------------------------------------------
	120	m4_define([lt_dict_filter],
	121	[m4_if([$5], [], [],
	122	[lt_join(m4_quote(m4_default([$4], [[, ]])),
	123	lt_unquote(m4_split(m4_normalize(m4_foreach(_Lt_key, lt_car([m4_shiftn(4, $@)]),
	124	[lt_if_dict_fetch([$1], _Lt_key, [$2], [$3], [_Lt_key ])])))))])[]dnl
	125	])