Commit | Line | Data |
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420a0d19 CE |
1 | #! /bin/sh |
2 | ||
3 | # We turn the configure-built build-$foo/lookups/Makefile.predynamic into Makefile | |
4 | ||
5 | # We always re-exec ourselves at least once, because it's the cleanest and | |
6 | # most portable way to turn on various features we expect of POSIX sh. | |
7 | if [ -z "$EXIM_LOOKUP_MAKEFILE_ADJUSTED" ] | |
8 | then | |
9 | SHELL=/bin/sh | |
10 | EXIM_LOOKUP_MAKEFILE_ADJUSTED=yes | |
11 | export EXIM_LOOKUP_MAKEFILE_ADJUSTED | |
12 | ||
13 | # Solaris sh and tr are problematic until we get xpg4 variants | |
14 | if [ -x /usr/xpg4/bin/sh ] | |
15 | then | |
16 | PATH="/usr/xpg4/bin:$PATH" | |
17 | export PATH | |
18 | SHELL=/usr/xpg4/bin/sh | |
19 | export SHELL | |
20 | fi | |
21 | ||
22 | # IRIX uses /bin/ksh for sh but in a compatibility mode unless $_XPG == 1, | |
23 | # where said compatibility mode disables $(...) | |
24 | _XPG=1 | |
25 | export _XPG | |
26 | ||
27 | # We need the _right_ tr, so must do that first; but if a shell which | |
28 | # we're more confident is sane is available, let's try that. Mostly, | |
29 | # the problem is that "local" is not actually in "the" standard, it's | |
30 | # just in every not-insane shell. Though arguably, there are no shells | |
31 | # with POSIX-ish syntax which qualify as "not insane". | |
32 | for b in /bin/dash /bin/bash /usr/local/bin/bash | |
33 | do | |
34 | if [ -x "$b" ] | |
35 | then | |
36 | SHELL="$b" | |
37 | break | |
38 | fi | |
39 | done | |
40 | # if we get a report of a system with zsh but not bash, we can add that | |
41 | # to the list, but be sure to enable sh_word_split in that case. | |
42 | ||
43 | exec "$SHELL" "$0" "$@" | |
44 | fi | |
45 | ||
46 | input=lookups/Makefile.predynamic | |
47 | target=lookups/Makefile.postdynamic | |
48 | defs_source=Makefile-t | |
49 | tag_marker='MAGIC-TAG-MODS-OBJ-RULES-GO-HERE' | |
50 | ||
51 | tab=' ' | |
52 | ||
53 | # We rely on tr(1) for translating case below. Some people export | |
54 | # values of LC_CTYPE and LC_COLLATE which apparently break our assumptions. | |
55 | # We're a script expecting certain output based on known inputs and not dealing | |
56 | # with UTF8, so we should be safe doingthis: | |
57 | LC_ALL=C | |
58 | export LC_ALL | |
59 | ||
60 | if [ -f "$defs_source" ] | |
61 | then | |
62 | : | |
63 | # we are happy | |
64 | else | |
65 | echo >&2 "$0: ERROR: MISSING FILE '${defs_source}'" | |
66 | echo >&2 "$0: SHOULD HAVE BEEN CALLED FROM scripts/Configure-Makefile" | |
67 | exit 1 | |
68 | fi | |
69 | ||
70 | # nb: do not permit leading whitespace for this, as CFLAGS_DYNAMIC is exported | |
71 | # to the lookups subdir via a line with leading whitespace which otherwise | |
72 | # matches | |
73 | if grep -q "^CFLAGS_DYNAMIC[ $tab?:]*=" "$defs_source" | |
74 | then | |
75 | # we have a definition, we're good to go | |
76 | echo >&2 ">>> Creating lookups/Makefile for building dynamic modules" | |
77 | enable_dynamic=yes | |
78 | else | |
79 | echo >&2 ">>> Creating lookups/Makefile without dynamic module support" | |
80 | enable_dynamic='' | |
81 | # We always do something now, since there should always be a lookup, | |
82 | # and now we need to run in order to put the OBJ=$(OBJ)+ rules in. So we | |
83 | # continue on. | |
84 | fi | |
85 | ||
86 | # For the want_ checks, we need to let the user override values from the make | |
87 | # command-line, not just check the Makefile. | |
88 | ||
89 | want_dynamic() { | |
90 | local dyn_name="$1" | |
91 | local re="LOOKUP_${dyn_name}[ $tab]*=[ $tab]*2" | |
92 | env | grep -q "^$re" | |
93 | if [ $? -eq 0 ]; then return 0; fi | |
94 | grep -q "^[ $tab]*$re" "$defs_source" | |
95 | } | |
96 | ||
97 | want_at_all() { | |
98 | local want_name="$1" | |
99 | local re="LOOKUP_${want_name}[ $tab]*=[ $tab]*." | |
100 | env | grep -q "^$re" | |
101 | if [ $? -eq 0 ]; then return 0; fi | |
102 | grep -q "^[ $tab]*$re" "$defs_source" | |
103 | } | |
104 | ||
105 | # Adapted want_at_all above to work for EXPERIMENTAL features | |
106 | want_experimental() { | |
107 | local want_name="$1" | |
108 | local re="EXPERIMENTAL_${want_name}[ $tab]*=[ $tab]*." | |
109 | env | grep -q "^$re" | |
110 | if [ $? -eq 0 ]; then return 0; fi | |
111 | grep -q "^[ $tab]*$re" "$defs_source" | |
112 | } | |
113 | ||
114 | # The values of these variables will be emitted into the Makefile. | |
115 | ||
116 | MODS="" | |
117 | OBJ="" | |
118 | ||
119 | emit_module_rule() { | |
120 | local lookup_name="$1" | |
121 | local mod_name pkgconf | |
122 | if [ "${lookup_name%:*}" = "$lookup_name" ] | |
123 | then | |
124 | # Square brackets are redundant but benign for POSIX compliant tr, | |
125 | # however Solaris /usr/bin/tr requires them. Sometimes Solaris | |
126 | # gets installed without a complete set of xpg4 tools, sigh. | |
127 | mod_name=$(echo $lookup_name | tr [A-Z] [a-z]) | |
128 | else | |
129 | mod_name="${lookup_name#*:}" | |
130 | lookup_name="${lookup_name%:*}" | |
131 | fi | |
132 | ||
133 | if want_dynamic "$lookup_name" | |
134 | then | |
135 | if [ -z "$enable_dynamic" ]; then | |
136 | echo >&2 "Missing CFLAGS_DYNAMIC prevents building dynamic $lookup_name" | |
137 | exit 1 | |
138 | fi | |
139 | MODS="${MODS} ${mod_name}.so" | |
140 | pkgconf=$(grep "^LOOKUP_${lookup_name}_PC" "$defs_source") | |
141 | if [ $? -eq 0 ]; then | |
142 | pkgconf=$(echo $pkgconf | sed 's/^.*= *//') | |
143 | echo "LOOKUP_${mod_name}_INCLUDE = $(pkg-config --cflags $pkgconf)" | |
144 | echo "LOOKUP_${mod_name}_LIBS = $(pkg-config --libs $pkgconf)" | |
145 | else | |
146 | grep "^LOOKUP_${lookup_name}_" "$defs_source" | |
147 | echo "LOOKUP_${mod_name}_INCLUDE = \$(LOOKUP_${lookup_name}_INCLUDE)" | |
148 | echo "LOOKUP_${mod_name}_LIBS = \$(LOOKUP_${lookup_name}_LIBS)" | |
149 | fi | |
150 | elif want_at_all "$lookup_name" | |
151 | then | |
152 | OBJ="${OBJ} ${mod_name}.o" | |
153 | fi | |
154 | } | |
155 | ||
156 | rm -f "$target" | |
157 | exec 5>&1 | |
158 | exec > "$target" | |
159 | ||
160 | sed -n "1,/$tag_marker/p" < "$input" | |
161 | ||
162 | for name_mod in \ | |
163 | CDB DBM:dbmdb DNSDB DSEARCH IBASE LSEARCH MYSQL NIS NISPLUS ORACLE \ | |
164 | PASSWD PGSQL SQLITE TESTDB WHOSON | |
165 | do | |
166 | emit_module_rule $name_mod | |
167 | done | |
168 | ||
169 | if want_at_all LDAP | |
170 | then | |
171 | OBJ="${OBJ} ldap.o" | |
172 | fi | |
173 | ||
174 | # Because the variable is EXPERIMENTAL_SPF and not LOOKUP_SPF we | |
175 | # always include spf.o and compile a dummy if EXPERIMENTAL_SPF is not | |
176 | # defined. | |
177 | ||
178 | OBJ="${OBJ} spf.o" | |
179 | ||
180 | # Because the variable is EXPERIMENTAL_REDIS and not LOOKUP_REDIS we | |
181 | # use a different function to check for EXPERIMENTAL_* features | |
182 | # requested. Don't use the SPF method with dummy functions above. | |
183 | if want_experimental REDIS | |
184 | then | |
185 | OBJ="${OBJ} redis.o" | |
186 | fi | |
187 | ||
188 | echo "MODS = $MODS" | |
189 | echo "OBJ = $OBJ" | |
190 | ||
191 | sed -n "/$tag_marker/,\$p" < "$input" | |
192 | ||
193 | exec >&5 | |
194 | ||
195 | # Configure-Makefile will move $target into place | |
196 | ||
197 | # vim: set ft=sh sw=2 : |