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
  32 defs_source=Makefile
  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   enable_dynamic=yes
  51 else
  52   echo >&2 "Missing CFLAGS_DYNAMIC inhibits building dynamic module lookup"
  53   enable_dynamic=''
  54   # We always do something now, since there should always be a lookup,
  55   # and now we need to run in order to put the OBJ=$(OBJ)+ rules in.  So we
  56   # continue on.
  57 fi
  58
  59 tmp="$target.t"
  60
  61 # For the want_ checks, we need to let the user override values from the make
  62 # command-line, not just check the Makefile.
  63
  64 want_dynamic() {
  65   local dyn_name="$1"
  66   local re="LOOKUP_${dyn_name}[ $tab]*=[ $tab]*2"
  67   env | grep -q "^$re"
  68   if [ $? -eq 0 ]; then return 0; fi
  69   grep -q "^[ $tab]*$re" "$defs_source"
  70 }
  71
  72 want_at_all() {
  73   local want_name="$1"
  74   local re="LOOKUP_${want_name}[ $tab]*=[ $tab]*."
  75   env | grep -q "^$re"
  76   if [ $? -eq 0 ]; then return 0; fi
  77   grep -q "^[ $tab]*$re" "$defs_source"
  78 }
  79
  80 # The values of these variables will be emitted into the Makefile.
  81
  82 MODS=""
  83 OBJ=""
  84
  85 emit_module_rule() {
  86   local lookup_name="$1"
  87   local mod_name pkgconf
  88   if [ "${lookup_name%:*}" = "$lookup_name" ]
  89   then
  90     mod_name=$(echo $lookup_name | tr A-Z a-z)
  91   else
  92     mod_name="${lookup_name#*:}"
  93     lookup_name="${lookup_name%:*}"
  94   fi
  95
  96   if want_dynamic "$lookup_name"
  97   then
  98     if [ -z "$enable_dynamic" ]; then
  99       echo >&2 "Inhibited dynamic modules prevents building dynamic $lookup_name"
 100       exit 1
 101     fi
 102     MODS="${MODS} ${mod_name}.so"
 103     pkgconf=$(grep "^LOOKUP_${lookup_name}_PC" "$defs_source")
 104     if [ $? -eq 0 ]; then
 105       pkgconf=$(echo $pkgconf | sed 's/^.*= *//')
 106       echo "LOOKUP_${mod_name}_INCLUDE = $(pkg-config --cflags $pkgconf)"
 107       echo "LOOKUP_${mod_name}_LIBS = $(pkg-config --libs $pkgconf)"
 108     else
 109       grep "^LOOKUP_${lookup_name}_" "$defs_source"
 110       echo "LOOKUP_${mod_name}_INCLUDE = \$(LOOKUP_${lookup_name}_INCLUDE)"
 111       echo "LOOKUP_${mod_name}_LIBS = \$(LOOKUP_${lookup_name}_LIBS)"
 112     fi
 113   elif want_at_all "$lookup_name"
 114   then
 115     OBJ="${OBJ} ${mod_name}.o"
 116   fi
 117 }
 118
 119 exec 5>&1
 120 exec > "$tmp"
 121
 122 sed -n "1,/$tag_marker/p" < "$input"
 123
 124 for name_mod in \
 125     CDB DBM:dbmdb DNSDB DSEARCH IBASE LSEARCH MYSQL NIS NISPLUS ORACLE \
 126     PASSWD PGSQL SQLITE TESTDB WHOSON
 127 do
 128   emit_module_rule $name_mod
 129 done
 130
 131 if want_at_all LDAP
 132 then
 133   OBJ="${OBJ} ldap.o"
 134 fi
 135
 136 # Because the variable is EXPERIMENTAL_SPF and not LOOKUP_SPF we
 137 # always include spf.o and compile a dummy if EXPERIMENTAL_SPF is not
 138 # defined.
 139
 140 OBJ="${OBJ} spf.o"
 141
 142 echo "MODS = $MODS"
 143 echo "OBJ = $OBJ"
 144
 145 sed -n "/$tag_marker/,\$p" < "$input"
 146
 147 exec >&5
 148 mv "$tmp" "$target"
 149
 150
 151 # vim: set ft=sh sw=2 :