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 $(...)
  24   _XPG=1
  25   export _XPG
  26
  27   # We need the _right_ tr, so must do that first; but if a shell which
  28   # we're more confident is sane is available, let's try that.  Mostly,
  29   # the problem is that "local" is not actually in "the" standard, it's
  30   # just in every not-insane shell.  Though arguably, there are no shells
  31   # with POSIX-ish syntax which qualify as "not insane".
  32   for b in /bin/dash /bin/bash /usr/local/bin/bash
  33   do
  34     if [ -x "$b" ]
  35     then
  36       SHELL="$b"
  37       break
  38     fi
  39   done
  40   # if we get a report of a system with zsh but not bash, we can add that
  41   # to the list, but be sure to enable sh_word_split in that case.
  42
  43   exec "$SHELL" "$0" "$@"
  44 fi
  45
  46 input=lookups/Makefile.predynamic
  47 target=lookups/Makefile.postdynamic
  48 defs_source=Makefile-t
  49 tag_marker='MAGIC-TAG-MODS-OBJ-RULES-GO-HERE'
  50
  51 tab='   '
  52
  53 # We rely on tr(1) for translating case below.  Some people export
  54 # values of LC_CTYPE and LC_COLLATE which apparently break our assumptions.
  55 # We're a script expecting certain output based on known inputs and not dealing
  56 # with UTF8, so we should be safe doingthis:
  57 LC_ALL=C
  58 export LC_ALL
  59
  60 if [ -f "$defs_source" ]
  61 then
  62   :
  63   # we are happy
  64 else
  65   echo >&2 "$0: ERROR: MISSING FILE '${defs_source}'"
  66   echo >&2 "$0: SHOULD HAVE BEEN CALLED FROM scripts/Configure-Makefile"
  67   exit 1
  68 fi
  69
  70 # nb: do not permit leading whitespace for this, as CFLAGS_DYNAMIC is exported
  71 # to the lookups subdir via a line with leading whitespace which otherwise
  72 # matches
  73 if grep -q "^CFLAGS_DYNAMIC[ $tab?:]*=" "$defs_source"
  74 then
  75   # we have a definition, we're good to go
  76   echo >&2 ">>> Creating lookups/Makefile for building dynamic modules"
  77   enable_dynamic=yes
  78 else
  79   echo >&2 ">>> Creating lookups/Makefile without dynamic module support"
  80   enable_dynamic=''
  81   # We always do something now, since there should always be a lookup,
  82   # and now we need to run in order to put the OBJ=$(OBJ)+ rules in.  So we
  83   # continue on.
  84 fi
  85
  86 # For the want_ checks, we need to let the user override values from the make
  87 # command-line, not just check the Makefile.
  88
  89 want_dynamic() {
  90   local dyn_name="$1"
  91   local re="LOOKUP_${dyn_name}[ $tab]*=[ $tab]*2"
  92   env | grep -q "^$re"
  93   if [ $? -eq 0 ]; then return 0; fi
  94   grep -q "^[ $tab]*$re" "$defs_source"
  95 }
  96
  97 want_at_all() {
  98   local want_name="$1"
  99   local re="LOOKUP_${want_name}[ $tab]*=[ $tab]*."
 100   env | grep -q "^$re"
 101   if [ $? -eq 0 ]; then return 0; fi
 102   grep -q "^[ $tab]*$re" "$defs_source"
 103 }
 104
 105 # Adapted want_at_all above to work for EXPERIMENTAL features
 106 want_experimental() {
 107   local want_name="$1"
 108   local re="EXPERIMENTAL_${want_name}[ $tab]*=[ $tab]*."
 109   env | grep -q "^$re"
 110   if [ $? -eq 0 ]; then return 0; fi
 111   grep -q "^[ $tab]*$re" "$defs_source"
 112 }
 113
 114 # The values of these variables will be emitted into the Makefile.
 115
 116 MODS=""
 117 OBJ=""
 118
 119 emit_module_rule() {
 120   local lookup_name="$1"
 121   local mod_name pkgconf
 122   if [ "${lookup_name%:*}" = "$lookup_name" ]
 123   then
 124     # Square brackets are redundant but benign for POSIX compliant tr,
 125     # however Solaris /usr/bin/tr requires them. Sometimes Solaris
 126     # gets installed without a complete set of xpg4 tools, sigh.
 127     mod_name=$(echo $lookup_name | tr [A-Z] [a-z])
 128   else
 129     mod_name="${lookup_name#*:}"
 130     lookup_name="${lookup_name%:*}"
 131   fi
 132
 133   if want_dynamic "$lookup_name"
 134   then
 135     if [ -z "$enable_dynamic" ]; then
 136       echo >&2 "Missing CFLAGS_DYNAMIC prevents building dynamic $lookup_name"
 137       exit 1
 138     fi
 139     MODS="${MODS} ${mod_name}.so"
 140     pkgconf=$(grep "^LOOKUP_${lookup_name}_PC" "$defs_source")
 141     if [ $? -eq 0 ]; then
 142       pkgconf=$(echo $pkgconf | sed 's/^.*= *//')
 143       echo "LOOKUP_${mod_name}_INCLUDE = $(pkg-config --cflags $pkgconf)"
 144       echo "LOOKUP_${mod_name}_LIBS = $(pkg-config --libs $pkgconf)"
 145     else
 146       grep "^LOOKUP_${lookup_name}_" "$defs_source"
 147       echo "LOOKUP_${mod_name}_INCLUDE = \$(LOOKUP_${lookup_name}_INCLUDE)"
 148       echo "LOOKUP_${mod_name}_LIBS = \$(LOOKUP_${lookup_name}_LIBS)"
 149     fi
 150   elif want_at_all "$lookup_name"
 151   then
 152     OBJ="${OBJ} ${mod_name}.o"
 153   fi
 154 }
 155
 156 rm -f "$target"
 157 exec 5>&1
 158 exec > "$target"
 159
 160 sed -n "1,/$tag_marker/p" < "$input"
 161
 162 for name_mod in \
 163     CDB DBM:dbmdb DNSDB DSEARCH IBASE LSEARCH MYSQL NIS NISPLUS ORACLE \
 164     PASSWD PGSQL REDIS SQLITE TESTDB WHOSON
 165 do
 166   emit_module_rule $name_mod
 167 done
 168
 169 if want_at_all LDAP
 170 then
 171   OBJ="${OBJ} ldap.o"
 172 fi
 173
 174 # Because the variable is EXPERIMENTAL_SPF and not LOOKUP_SPF we
 175 # always include spf.o and compile a dummy if EXPERIMENTAL_SPF is not
 176 # defined.
 177
 178 OBJ="${OBJ} spf.o"
 179
 180 if want_experimental LMDB
 181 then
 182   OBJ="${OBJ} lmdb.o"
 183 fi
 184
 185 echo "MODS = $MODS"
 186 echo "OBJ = $OBJ"
 187
 188 sed -n "/$tag_marker/,\$p" < "$input"
 189
 190 exec >&5
 191
 192 # Configure-Makefile will move $target into place
 193
 194 # vim: set ft=sh sw=2 :