3 # Copyright (c) The Exim Maintainers 1995 - 2024
4 # SPDX-License-Identifier: GPL-2.0-or-later
11 # We turn the configure-built build-$foo/$class/Makefile.predynamic into Makefile.
12 # This is used for router and transport drivers, called from scripts/Configure-Makefile.
14 # We always re-exec ourselves at least once, because it's the cleanest and
15 # most portable way to turn on various features we expect of POSIX sh.
16 if [ -z "$EXIM_DRIVER_MAKEFILE_ADJUSTED" ]
19 EXIM_DRIVER_MAKEFILE_ADJUSTED=yes
20 export EXIM_DRIVER_MAKEFILE_ADJUSTED
22 # Solaris sh and tr are problematic until we get xpg4 variants
23 if [ -x /usr/xpg4/bin/sh ]
25 PATH="/usr/xpg4/bin:$PATH"
27 SHELL=/usr/xpg4/bin/sh
31 # IRIX uses /bin/ksh for sh but in a compatibility mode unless $_XPG == 1,
32 # where said compatibility mode disables $(...)
36 # We need the _right_ tr, so must do that first; but if a shell which
37 # we're more confident is sane is available, let's try that. Mostly,
38 # the problem is that "local" is not actually in "the" standard, it's
39 # just in every not-insane shell. Though arguably, there are no shells
40 # with POSIX-ish syntax which qualify as "not insane".
41 for b in /bin/dash /bin/bash /usr/local/bin/bash
49 # if we get a report of a system with zsh but not bash, we can add that
50 # to the list, but be sure to enable sh_word_split in that case.
52 exec "$SHELL" "$0" "$@"
55 input=$class/Makefile.predynamic
56 target=$class/Makefile.postdynamic
57 defs_source=Makefile-t
58 tag_marker='MAGIC-TAG-MODS-OBJ-RULES-GO-HERE'
62 # We rely on tr(1) for translating case below. Some people export
63 # values of LC_CTYPE and LC_COLLATE which apparently break our assumptions.
64 # We're a script expecting certain output based on known inputs and not dealing
65 # with UTF8, so we should be safe doing this:
69 if [ -f "$defs_source" ]
74 echo >&2 "$0: ERROR: MISSING FILE '${defs_source}'"
75 echo >&2 "$0: SHOULD HAVE BEEN CALLED FROM scripts/Configure-Makefile"
79 # nb: do not permit leading whitespace for this, as CFLAGS_DYNAMIC is exported
80 # to the lookups subdir via a line with leading whitespace which otherwise
82 if grep -q "^CFLAGS_DYNAMIC[ $tab?:]*=" "$defs_source"
84 # we have a definition, we're good to go
85 echo >&2 ">>> Creating $class/Makefile for building dynamic modules"
88 echo >&2 ">>> Creating $class/Makefile without dynamic module support"
90 # We always do something now, since there should always be a lookup,
91 # and now we need to run in order to put the OBJ=$(OBJ)+ rules in. So we
95 # For the want_ checks, we need to let the user override values from the make
96 # command-line, not just check the Makefile.
100 local re="(${classdef}|EXPERIMENTAL)_${dyn_name}[ $tab]*=[ $tab]*2"
101 env | grep -E -q "^$re"
102 if [ $? -eq 0 ]; then return 0; fi
103 grep -E -q "^[ $tab]*$re" "$defs_source"
108 local re="(${classdef}|EXPERIMENTAL)_${want_name}[ $tab]*=[ $tab]*."
109 env | grep -E -q "^$re"
110 if [ $? -eq 0 ]; then return 0; fi
111 grep -E -q "^[ $tab]*$re" "$defs_source"
114 # The values of these variables will be emitted into the Makefile.
121 local mod_name pkgconf
122 if [ "${name%:*}" = "$name" ]
124 # Square brackets are redundant but benign for POSIX compliant tr,
125 # however Solaris /usr/bin/tr requires them. Sometimes Solaris
126 # gets installed without a complete set of xpg4 tools, sigh.
127 mod_name=$(echo $name | tr [A-Z] [a-z])
129 mod_name="${name#*:}"
133 if want_dynamic "$name"
135 if [ -z "$enable_dynamic" ]; then
136 echo >&2 "Missing CFLAGS_DYNAMIC prevents building dynamic $name"
139 MODS="${MODS} ${mod_name}.so"
140 # pkgconf=$(grep "^${classdef}_${name}_PC" "$defs_source")
141 # if [ $? -eq 0 ]; then
142 # pkgconf=$(echo $pkgconf | sed 's/^.*= *//')
143 # echo "${classdef}_${mod_name}_INCLUDE = $(pkg-config --cflags $pkgconf)"
144 # echo "${classdef}_${mod_name}_LIBS = $(pkg-config --libs $pkgconf)"
146 # grep "^${classdef}_${name}_" "$defs_source"
147 # echo "${classdef}_${mod_name}_INCLUDE = \$(${classdef}_${name}_INCLUDE)"
148 # echo "${classdef}_${mod_name}_LIBS = \$(${classdef}_${name}_LIBS)"
150 elif want_at_all "$name"
152 OBJ="${OBJ} ${mod_name}.o"
160 sed -n "1,/$tag_marker/p" < "$input"
162 for name_mod in $drnames
164 emit_module_rule $name_mod
170 sed -n "/$tag_marker/,\$p" < "$input"
174 # Configure-Makefile will move $target into place
176 # vim: set ft=sh sw=2 :