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Diffstat (limited to '')
| -rwxr-xr-x | scripts/lookups-Makefile | 194 |
1 files changed, 194 insertions, 0 deletions
diff --git a/scripts/lookups-Makefile b/scripts/lookups-Makefile new file mode 100755 index 0000000..ed8b0cb --- /dev/null +++ b/scripts/lookups-Makefile @@ -0,0 +1,194 @@ +#! /bin/sh + +# Copyright (c) The Exim Maintainers 1995 - 2021 + +# We turn the configure-built build-$foo/lookups/Makefile.predynamic into Makefile + +# We always re-exec ourselves at least once, because it's the cleanest and +# most portable way to turn on various features we expect of POSIX sh. +if [ -z "$EXIM_LOOKUP_MAKEFILE_ADJUSTED" ] +then + SHELL=/bin/sh + EXIM_LOOKUP_MAKEFILE_ADJUSTED=yes + export EXIM_LOOKUP_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=lookups/Makefile.predynamic +target=lookups/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 doingthis: +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 lookups/Makefile for building dynamic modules" + enable_dynamic=yes +else + echo >&2 ">>> Creating lookups/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="$1" + local re="LOOKUP_${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" +} + +# Adapted want_at_all above to work for EXPERIMENTAL features +want_experimental() { + local want_name="$1" + local re="EXPERIMENTAL_${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="$1" + local mod_name pkgconf + if [ "${lookup_name%:*}" = "$lookup_name" ] + then + # Square brackets are redundant but benign for POSIX compliant tr, + # however Solaris /usr/bin/tr requires them. Sometimes Solaris + # gets installed without a complete set of xpg4 tools, sigh. + mod_name=$(echo $lookup_name | tr [A-Z] [a-z]) + else + mod_name="${lookup_name#*:}" + lookup_name="${lookup_name%:*}" + fi + + if want_dynamic "$lookup_name" + then + if [ -z "$enable_dynamic" ]; then + echo >&2 "Missing CFLAGS_DYNAMIC prevents building dynamic $lookup_name" + exit 1 + fi + MODS="${MODS} ${mod_name}.so" + pkgconf=$(grep "^LOOKUP_${lookup_name}_PC" "$defs_source") + if [ $? -eq 0 ]; then + pkgconf=$(echo $pkgconf | sed 's/^.*= *//') + echo "LOOKUP_${mod_name}_INCLUDE = $(pkg-config --cflags $pkgconf)" + echo "LOOKUP_${mod_name}_LIBS = $(pkg-config --libs $pkgconf)" + else + grep "^LOOKUP_${lookup_name}_" "$defs_source" + echo "LOOKUP_${mod_name}_INCLUDE = \$(LOOKUP_${lookup_name}_INCLUDE)" + echo "LOOKUP_${mod_name}_LIBS = \$(LOOKUP_${lookup_name}_LIBS)" + fi + elif want_at_all "$lookup_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 \ + CDB DBM:dbmdb DNSDB DSEARCH IBASE JSON LMDB LSEARCH MYSQL NIS NISPLUS ORACLE \ + PASSWD PGSQL REDIS 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" + +# readsock is always wanted as it implements the ${readsock } expansion +OBJ="${OBJ} readsock.o" + +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 : |