3 # This file defines new macros to process configure command line
4 # arguments, to replace the brain-dead AC_ARG_WITH and AC_ARG_ENABLE.
5 # The flaw in these is particularly that they only differentiate
6 # between "given" and "not given" and do not provide enough help to
7 # process arguments that only accept "yes/no", that require an
8 # argument (other than "yes/no"), etc.
10 # The point of this implementation is to reduce code size and
11 # redundancy in configure.in and to improve robustness and consistency
12 # in the option evaluation code.
15 # Convert type and name to shell variable name (e.g., "enable_long_strings")
16 m4_define([pgac_arg_to_variable],
17 [$1[]_[]patsubst($2, -, _)])
20 # PGAC_ARG(TYPE, NAME, HELP-STRING,
21 # [ACTION-IF-YES], [ACTION-IF-NO], [ACTION-IF-ARG],
22 # [ACTION-IF-OMITTED])
23 # ----------------------------------------------------------
24 # This is the base layer. TYPE is either "with" or "enable", depending
25 # on what you like. NAME is the rest of the option name, HELP-STRING
26 # as usual. ACTION-IF-YES is executed if the option is given without
27 # an argument (or "yes", which is the same); similar for ACTION-IF-NO.
31 pgac_args="$pgac_args pgac_arg_to_variable([$1],[$2])"
35 AC_ARG_ENABLE([$2], [$3], [
48 [$7])[]dnl AC_ARG_ENABLE
52 AC_ARG_WITH([$2], [$3], [
65 [$7])[]dnl AC_ARG_WITH
68 [m4_fatal([first argument of $0 must be 'enable' or 'with', not '$1'])]
74 # Checks if the user passed any --with/without/enable/disable
75 # arguments that were not defined. Just prints out a warning message,
76 # so this should be called near the end, so the user will see it.
78 AC_DEFUN([PGAC_ARG_CHECK],
79 [for pgac_var in `set | sed 's/=.*//' | $EGREP 'with_|enable_'`; do
80 for pgac_arg in $pgac_args with_gnu_ld; do
81 if test "$pgac_var" = "$pgac_arg"; then
85 pgac_txt=`echo $pgac_var | sed 's/_/-/g'`
86 AC_MSG_WARN([option ignored: --$pgac_txt])
87 done])# PGAC_ARG_CHECK
89 # PGAC_ARG_BOOL(TYPE, NAME, DEFAULT, HELP-STRING,
90 # [ACTION-IF-YES], [ACTION-IF-NO])
91 # -----------------------------------------------
92 # Accept a boolean option, that is, one that only takes yes or no.
93 # ("no" is equivalent to "disable" or "without"). DEFAULT is what
94 # should be done if the option is omitted; it should be "yes" or "no".
95 # (Consequently, one of ACTION-IF-YES and ACTION-IF-NO will always
98 AC_DEFUN([PGAC_ARG_BOOL],
99 [PGAC_ARG([$1], [$2], [$4], [$5], [$6],
100 [AC_MSG_ERROR([no argument expected for --$1-$2 option])],
102 yes, [pgac_arg_to_variable([$1], [$2])=yes
104 no, [pgac_arg_to_variable([$1], [$2])=no
106 [m4_fatal([third argument of $0 must be 'yes' or 'no', not '$3'])])])[]dnl
110 # PGAC_ARG_REQ(TYPE, NAME, HELP-STRING, [ACTION-IF-GIVEN], [ACTION-IF-NOT-GIVEN])
111 # -------------------------------------------------------------------------------
112 # This option will require an argument; "yes" or "no" will not be
115 AC_DEFUN([PGAC_ARG_REQ],
116 [PGAC_ARG([$1], [$2], [$3],
117 [AC_MSG_ERROR([argument required for --$1-$2 option])],
118 [AC_MSG_ERROR([argument required for --$1-$2 option])],
120 [$5])])# PGAC_ARG_REQ
123 # PGAC_ARG_OPTARG(TYPE, NAME, HELP-STRING, [DEFAULT-ACTION], [ARG-ACTION]
124 # [ACTION-ENABLED], [ACTION-DISABLED])
125 # -----------------------------------------------------------------------
126 # This will create an option that behaves as follows: If omitted, or
127 # called with "no", then set the enable_variable to "no" and do
128 # nothing else. If called with "yes", then execute DEFAULT-ACTION. If
129 # called with argument, set enable_variable to "yes" and execute
130 # ARG-ACTION. Additionally, execute ACTION-ENABLED if we ended up with
131 # "yes" either way, else ACTION-DISABLED.
133 # The intent is to allow enabling a feature, and optionally pass an
134 # additional piece of information.
136 AC_DEFUN([PGAC_ARG_OPTARG],
137 [PGAC_ARG([$1], [$2], [$3], [$4], [],
138 [pgac_arg_to_variable([$1], [$2])=yes
140 [pgac_arg_to_variable([$1], [$2])=no])
141 dnl Add this code only if there's a ACTION-ENABLED or ACTION-DISABLED.
144 if test "[$]pgac_arg_to_variable([$1], [$2])" = yes; then