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#! /bin/sh
# We turn the configure-built build-$foo/lookups/Makefile.predynamic into Makefile
if [ -x /usr/xpg4/bin/sh ] && [ -z "$EXIM_BLOCK_XPG4_LOOP" ]
then
EXIM_BLOCK_XPG4_LOOP=yes
export EXIM_BLOCK_XPG4_LOOP
PATH="/usr/xpg4/bin:$PATH"
export PATH
exec /usr/xpg4/bin/sh "$0" "$@"
fi
input=lookups/Makefile.predynamic
target=lookups/Makefile
defs_source=Makefile
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 doingthis:
LC_ALL=C
export LC_ALL
# 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
enable_dynamic=yes
else
echo >&2 "Missing CFLAGS_DYNAMIC inhibits building dynamic module lookup"
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=$(OBJ)+ rules in. So we
# continue on.
fi
tmp="$target.t"
# 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="$1"
local re="LOOKUP_${dyn_name}[ $tab]*=[ $tab]*2"
env | grep -q "^$re"
if [ $? -eq 0 ]; then return 0; fi
grep -q "^[ $tab]*$re" "$defs_source"
}
want_at_all() {
local want_name="$1"
local re="LOOKUP_${want_name}[ $tab]*=[ $tab]*."
env | grep -q "^$re"
if [ $? -eq 0 ]; then return 0; fi
grep -q "^[ $tab]*$re" "$defs_source"
}
# The values of these variables will be emitted into the Makefile.
MODS=""
OBJ=""
emit_module_rule() {
local lookup_name="$1"
local mod_name
if [ "${lookup_name%:*}" = "$lookup_name" ]
then
mod_name=$(echo $lookup_name | tr A-Z a-z)
else
mod_name="${lookup_name#*:}"
lookup_name="${lookup_name%:*}"
fi
if want_dynamic "$lookup_name"
then
if [ -z "$enable_dynamic" ]; then
echo >&2 "Inhibited dynamic modules prevents building dynamic $lookup_name"
exit 1
fi
MODS="${MODS} ${mod_name}.so"
grep "^LOOKUP_${lookup_name}_" "$defs_source"
echo "LOOKUP_${mod_name}_INCLUDE = \$(LOOKUP_${lookup_name}_INCLUDE)"
echo "LOOKUP_${mod_name}_LIBS = \$(LOOKUP_${lookup_name}_LIBS)"
elif want_at_all "$lookup_name"
then
OBJ="${OBJ} ${mod_name}.o"
fi
}
exec 5>&1
exec > "$tmp"
sed -n "1,/$tag_marker/p" < "$input"
for name_mod in \
CDB DBM:dbmdb DNSDB DSEARCH IBASE LSEARCH MYSQL NIS NISPLUS ORACLE \
PASSWD PGSQL SQLITE TESTDB WHOSON
do
emit_module_rule $name_mod
done
if want_at_all LDAP
then
OBJ="${OBJ} ldap.o"
fi
# Because the variable is EXPERIMENTAL_SPF and not LOOKUP_SPF we
# always include spf.o and compile a dummy if EXPERIMENTAL_SPF is not
# defined.
OBJ="${OBJ} spf.o"
echo "MODS = $MODS"
echo "OBJ = $OBJ"
sed -n "/$tag_marker/,\$p" < "$input"
exec >&5
mv "$tmp" "$target"
# vim: set ft=sh sw=2 :
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