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|
#! /bin/sh
# Copyright (c) The Exim Maintainers 1995 - 2025
# SPDX-License-Identifier: GPL-2.0-or-later
class=${CLASS:?}
classdef=${CLASSDEF:?}
drnames="${DRNAMES:?}"
egrep="${EGREP:?}"
# We turn the configure-built build-$foo/$class/Makefile.predynamic into Makefile.
# This is used for router and transport drivers, called from scripts/Configure-Makefile.
# We always re-exec ourselves at least once, because it's the cleanest and
# most portable way to turn on various features we expect of POSIX sh.
if [ -z "$EXIM_DRIVER_MAKEFILE_ADJUSTED" ]
then
SHELL=/bin/sh
EXIM_DRIVER_MAKEFILE_ADJUSTED=yes
export EXIM_DRIVER_MAKEFILE_ADJUSTED
# Solaris sh and tr are problematic until we get xpg4 variants
if [ -x /usr/xpg4/bin/sh ]
then
PATH="/usr/xpg4/bin:$PATH"
export PATH
SHELL=/usr/xpg4/bin/sh
export SHELL
fi
# IRIX uses /bin/ksh for sh but in a compatibility mode unless $_XPG == 1,
# where said compatibility mode disables $(...)
_XPG=1
export _XPG
# We need the _right_ tr, so must do that first; but if a shell which
# we're more confident is sane is available, let's try that. Mostly,
# the problem is that "local" is not actually in "the" standard, it's
# just in every not-insane shell. Though arguably, there are no shells
# with POSIX-ish syntax which qualify as "not insane".
for b in /bin/dash /bin/bash /usr/local/bin/bash
do
if [ -x "$b" ]
then
SHELL="$b"
break
fi
done
# if we get a report of a system with zsh but not bash, we can add that
# to the list, but be sure to enable sh_word_split in that case.
exec "$SHELL" "$0" "$@"
fi
input=$class/Makefile.predynamic
target=$class/Makefile.postdynamic
defs_source=Makefile-t
tag_marker='MAGIC-TAG-MODS-OBJ-RULES-GO-HERE'
tab=' '
# We rely on tr(1) for translating case below. Some people export
# values of LC_CTYPE and LC_COLLATE which apparently break our assumptions.
# We're a script expecting certain output based on known inputs and not dealing
# with UTF8, so we should be safe doing this:
LC_ALL=C
export LC_ALL
if [ -f "$defs_source" ]
then
:
# we are happy
else
echo >&2 "$0: ERROR: MISSING FILE '${defs_source}'"
echo >&2 "$0: SHOULD HAVE BEEN CALLED FROM scripts/Configure-Makefile"
exit 1
fi
# nb: do not permit leading whitespace for this, as CFLAGS_DYNAMIC is exported
# to the lookups subdir via a line with leading whitespace which otherwise
# matches
if grep -q "^CFLAGS_DYNAMIC[ $tab?:]*=" "$defs_source"
then
# we have a definition, we're good to go
echo >&2 ">>> Creating $class/Makefile for building dynamic modules"
enable_dynamic=yes
else
echo >&2 ">>> Creating $class/Makefile without dynamic module support"
enable_dynamic=''
# We always do something now, since there should always be a lookup,
# and now we need to run in order to put the OBJ=$(OBJ)+ rules in. So we
# continue on.
fi
# For the want_ checks, we need to let the user override values from the make
# command-line, not just check the Makefile.
want_dynamic() {
local dyn_name="${1#_}"
local re="(${classdef}|EXPERIMENTAL)_${dyn_name}[ $tab]*=[ $tab]*2"
env | ${egrep} -q "^$re"
if [ $? -eq 0 ]; then return 0; fi
${egrep} -q "^[ $tab]*$re" "$defs_source"
}
want_not_disabled() {
local want_name="${1#_}"
[ "$want_name" = "$1" ] && return 1;
local re="DISABLED_${want_name}[ $tab]*=[ $tab]*."
env | ${egrep} -q "^$re"
[ $? -ne 0 ] && return 0
${egrep} -q "^[ $tab]*$re" "$defs_source"
[ $? -ne 0 ] && return 0
return 1
}
want_at_all() {
local want_name="$1"
local re="(${classdef}|EXPERIMENTAL)_${want_name}[ $tab]*=[ $tab]*."
env | ${egrep} -q "^$re"
if [ $? -eq 0 ]; then return 0; fi
${egrep} -q "^[ $tab]*$re" "$defs_source"
}
# The values of these variables will be emitted into the Makefile.
MODS=""
OBJ=""
emit_module_rule() {
local name="$1"
local mod_name pkgconf
if [ "${name%:*}" = "$name" ]
then
# Lower-case the name for mod_name.
# Square brackets are redundant but benign for POSIX compliant tr,
# however Solaris /usr/bin/tr requires them. Sometimes Solaris
# gets installed without a complete set of xpg4 tools, sigh.
mod_name=$(echo $name | tr [A-Z] [a-z])
else
# There is a :suffix on the name. Put it into mod_name, strip it from name.
mod_name="${name#*:}"
name="${name%:*}"
fi
if want_dynamic "$name"
then
if [ -z "$enable_dynamic" ]; then
echo >&2 "Missing CFLAGS_DYNAMIC prevents building dynamic $name"
exit 1
fi
MODS="${MODS} ${mod_name#_}.so"
grep "^${classdef}_${name}_PC" "$defs_source" 1>&2
pkgconf=$(grep "^${classdef}_${name}_PC" "$defs_source")
if [ $? -eq 0 ]; then
pkgconf=$(echo $pkgconf | sed 's/^.*= *//')
echo "${classdef}_${mod_name#_}_INCLUDE = $(pkg-config --cflags $pkgconf)"
echo "${classdef}_${mod_name#_}_LIBS = $(pkg-config --libs $pkgconf)"
else
grep "^${classdef}_${name}_" "$defs_source"
echo "${classdef}_${mod_name#_}_INCLUDE = \$(${classdef}_${name}_INCLUDE)"
echo "${classdef}_${mod_name#_}_LIBS = \$(${classdef}_${name}_LIBS)"
fi
elif want_not_disabled "$name"; then
OBJ="${OBJ} ${mod_name#_}.o"
elif want_at_all "$name"; then
OBJ="${OBJ} ${mod_name}.o"
fi
}
rm -f "$target"
exec 5>&1
exec > "$target"
sed -n "1,/$tag_marker/p" < "$input"
for name_mod in $drnames
do
emit_module_rule $name_mod
done
echo "MODS = $MODS"
echo "OBJ = $OBJ"
sed -n "/$tag_marker/,\$p" < "$input"
exec >&5
# Configure-Makefile will move $target into place
# vim: set ft=sh sw=2 :
|
