src/scripts/lookups-Makefile

   1 #! /bin/sh
   2
   3 # We turn the configure-built build-$foo/lookups/Makefile.predynamic into Makefile
   4
   5 # We always re-exec ourselves at least once, because it's the cleanest and
   6 # most portable way to turn on various features we expect of POSIX sh.
   7 if [ -z "$EXIM_LOOKUP_MAKEFILE_ADJUSTED" ]
   8 then
   9   SHELL=/bin/sh
  10   EXIM_LOOKUP_MAKEFILE_ADJUSTED=yes
  11   export EXIM_LOOKUP_MAKEFILE_ADJUSTED
  12
  13   # Solaris sh and tr are problematic until we get xpg4 variants
  14   if [ -x /usr/xpg4/bin/sh ]
  15   then
  16     PATH="/usr/xpg4/bin:$PATH"
  17     export PATH
  18     SHELL=/usr/xpg4/bin/sh
  19     export SHELL
  20   fi
  21
  22   # IRIX uses /bin/ksh for sh but in a compatibility mode unless $_XPG == 1,
  23   # where said compatibility mode disables $(...)
  24   _XPG=1
  25   export _XPG
  26
  27   exec "$SHELL" "$0" "$@"
  28 fi
  29
  30 input=lookups/Makefile.predynamic
  31 target=lookups/Makefile.postdynamic
  32 defs_source=Makefile-t
  33 tag_marker='MAGIC-TAG-MODS-OBJ-RULES-GO-HERE'
  34
  35 tab='   '
  36
  37 # We rely on tr(1) for translating case below.  Some people export
  38 # values of LC_CTYPE and LC_COLLATE which apparently break our assumptions.
  39 # We're a script expecting certain output based on known inputs and not dealing
  40 # with UTF8, so we should be safe doingthis:
  41 LC_ALL=C
  42 export LC_ALL
  43
  44 # nb: do not permit leading whitespace for this, as CFLAGS_DYNAMIC is exported
  45 # to the lookups subdir via a line with leading whitespace which otherwise
  46 # matches
  47 if grep -q "^CFLAGS_DYNAMIC[ $tab?:]*=" "$defs_source"
  48 then
  49   # we have a definition, we're good to go
  50   echo >&2 ">>> Creating lookups/Makefile for building dynamic modules"
  51   enable_dynamic=yes
  52 else
  53   echo >&2 ">>> Creating lookups/Makefile without dynamic module support"
  54   enable_dynamic=''
  55   # We always do something now, since there should always be a lookup,
  56   # and now we need to run in order to put the OBJ=$(OBJ)+ rules in.  So we
  57   # continue on.
  58 fi
  59
  60 # For the want_ checks, we need to let the user override values from the make
  61 # command-line, not just check the Makefile.
  62
  63 want_dynamic() {
  64   local dyn_name="$1"
  65   local re="LOOKUP_${dyn_name}[ $tab]*=[ $tab]*2"
  66   env | grep -q "^$re"
  67   if [ $? -eq 0 ]; then return 0; fi
  68   grep -q "^[ $tab]*$re" "$defs_source"
  69 }
  70
  71 want_at_all() {
  72   local want_name="$1"
  73   local re="LOOKUP_${want_name}[ $tab]*=[ $tab]*."
  74   env | grep -q "^$re"
  75   if [ $? -eq 0 ]; then return 0; fi
  76   grep -q "^[ $tab]*$re" "$defs_source"
  77 }
  78
  79 # Adapted want_at_all above to work for EXPERIMENTAL features
  80 want_experimental() {
  81   local want_name="$1"
  82   local re="EXPERIMENTAL_${want_name}[ $tab]*=[ $tab]*."
  83   env | grep -q "^$re"
  84   if [ $? -eq 0 ]; then return 0; fi
  85   grep -q "^[ $tab]*$re" "$defs_source"
  86 }
  87
  88 # The values of these variables will be emitted into the Makefile.
  89
  90 MODS=""
  91 OBJ=""
  92
  93 emit_module_rule() {
  94   local lookup_name="$1"
  95   local mod_name pkgconf
  96   if [ "${lookup_name%:*}" = "$lookup_name" ]
  97   then
  98     mod_name=$(echo $lookup_name | tr A-Z a-z)
  99   else
 100     mod_name="${lookup_name#*:}"
 101     lookup_name="${lookup_name%:*}"
 102   fi
 103
 104   if want_dynamic "$lookup_name"
 105   then
 106     if [ -z "$enable_dynamic" ]; then
 107       echo >&2 "Missing CFLAGS_DYNAMIC prevents building dynamic $lookup_name"
 108       exit 1
 109     fi
 110     MODS="${MODS} ${mod_name}.so"
 111     pkgconf=$(grep "^LOOKUP_${lookup_name}_PC" "$defs_source")
 112     if [ $? -eq 0 ]; then
 113       pkgconf=$(echo $pkgconf | sed 's/^.*= *//')
 114       echo "LOOKUP_${mod_name}_INCLUDE = $(pkg-config --cflags $pkgconf)"
 115       echo "LOOKUP_${mod_name}_LIBS = $(pkg-config --libs $pkgconf)"
 116     else
 117       grep "^LOOKUP_${lookup_name}_" "$defs_source"
 118       echo "LOOKUP_${mod_name}_INCLUDE = \$(LOOKUP_${lookup_name}_INCLUDE)"
 119       echo "LOOKUP_${mod_name}_LIBS = \$(LOOKUP_${lookup_name}_LIBS)"
 120     fi
 121   elif want_at_all "$lookup_name"
 122   then
 123     OBJ="${OBJ} ${mod_name}.o"
 124   fi
 125 }
 126
 127 rm -f "$target"
 128 exec 5>&1
 129 exec > "$target"
 130
 131 sed -n "1,/$tag_marker/p" < "$input"
 132
 133 for name_mod in \
 134     CDB DBM:dbmdb DNSDB DSEARCH IBASE LSEARCH MYSQL NIS NISPLUS ORACLE \
 135     PASSWD PGSQL SQLITE TESTDB WHOSON
 136 do
 137   emit_module_rule $name_mod
 138 done
 139
 140 if want_at_all LDAP
 141 then
 142   OBJ="${OBJ} ldap.o"
 143 fi
 144
 145 # Because the variable is EXPERIMENTAL_SPF and not LOOKUP_SPF we
 146 # always include spf.o and compile a dummy if EXPERIMENTAL_SPF is not
 147 # defined.
 148
 149 OBJ="${OBJ} spf.o"
 150
 151 # Because the variable is EXPERIMENTAL_REDIS and not LOOKUP_REDIS we
 152 # use a different function to check for EXPERIMENTAL_* features
 153 # requested. Don't use the SPF method with dummy functions above.
 154 if want_experimental REDIS
 155 then
 156   OBJ="${OBJ} redis.o"
 157 fi
 158
 159 echo "MODS = $MODS"
 160 echo "OBJ = $OBJ"
 161
 162 sed -n "/$tag_marker/,\$p" < "$input"
 163
 164 exec >&5
 165
 166 # Configure-Makefile will move $target into place
 167
 168 # vim: set ft=sh sw=2 :