X-Git-Url: https://git.exim.org/exim.git/blobdiff_plain/eec525c43adade97ff94d839810faf7cb35bd87f..exim-4_84_RC1:/src/scripts/lookups-Makefile?ds=inline diff --git a/src/scripts/lookups-Makefile b/src/scripts/lookups-Makefile index 31820ea2f..61493c632 100755 --- a/src/scripts/lookups-Makefile +++ b/src/scripts/lookups-Makefile @@ -2,43 +2,129 @@ # 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 -defs_source=Makefile +target=lookups/Makefile.postdynamic +defs_source=Makefile-t tag_marker='MAGIC-TAG-MODS-OBJ-RULES-GO-HERE' tab=' ' -# We always do something now, since there should always be a lookup, -# and now we need to run in order to put the OBJ+= rules in. +# 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 grep -q "^CFLAGS_DYNAMIC[ $tab]*=" "$defs_source" +if [ -f "$defs_source" ] then - # we have a definition, we're good to go - : # noop (true) statement for bash compatibility + : + # we are happy else - echo >&2 "Missing CFLAGS_DYNAMIC inhibits building dynamic module lookup" + echo >&2 "$0: ERROR: MISSING FILE '${defs_source}'" + echo >&2 "$0: SHOULD HAVE BEEN CALLED FROM scripts/Configure-Makefile" exit 1 fi -tmp="$target.t" +# 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="$1" - grep -q "^LOOKUP_${dyn_name}[ $tab]*=[ $tab]*2" "$defs_source" + 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="$1" - grep -q "^LOOKUP_${want_name}[ $tab]*=[ $tab]*." "$defs_source" + 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="$1" - local mod_name + local mod_name pkgconf if [ "${lookup_name%:*}" = "$lookup_name" ] then - mod_name=$(echo $lookup_name | tr A-Z a-z) + # Square brackets are redundant but benign for POSIX compliant tr, + # however Solaris /usr/bin/tr requires them. Sometimes Solaris + # gets installed without a complete set of xpg4 tools, sigh. + mod_name=$(echo $lookup_name | tr [A-Z] [a-z]) else mod_name="${lookup_name#*:}" lookup_name="${lookup_name%:*}" @@ -46,17 +132,30 @@ emit_module_rule() { if want_dynamic "$lookup_name" then - echo "MODS += ${mod_name}.so" - echo "LOOKUP_${mod_name}_INCLUDE = \$(LOOKUP_${lookup_name}_INCLUDE)" - echo "LOOKUP_${mod_name}_LIBS = \$(LOOKUP_${lookup_name}_LIBS)" + if [ -z "$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 - echo "OBJ += ${mod_name}.o" + OBJ="${OBJ} ${mod_name}.o" fi } +rm -f "$target" exec 5>&1 -exec > "$tmp" +exec > "$target" sed -n "1,/$tag_marker/p" < "$input" @@ -69,13 +168,30 @@ done if want_at_all LDAP then - echo "OBJ += ldap.o" + 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" + +# Because the variable is EXPERIMENTAL_REDIS and not LOOKUP_REDIS we +# use a different function to check for EXPERIMENTAL_* features +# requested. Don't use the SPF method with dummy functions above. +if want_experimental REDIS +then + OBJ="${OBJ} redis.o" +fi + +echo "MODS = $MODS" +echo "OBJ = $OBJ" + sed -n "/$tag_marker/,\$p" < "$input" exec >&5 -mv "$tmp" "$target" +# Configure-Makefile will move $target into place # vim: set ft=sh sw=2 :