src/scripts/Configure-config.h

   1 #! /bin/sh
   2 # $Cambridge: exim/src/scripts/Configure-config.h,v 1.2 2005/05/04 10:17:29 ph10 Exp $
   3
   4 # Build the config.h file, using the buildconfig program, first ensuring that
   5 # it exists.
   6
   7 # 22-May-1996: remove the use of the "-a" flag for /bin/sh because it is not
   8 # implemented in the FreeBSD shell. Sigh.
   9
  10 # 12-Mar-1997: add s/#.*$// to the sed script to allow for comments on the
  11 # ends of settings - someone got caught.
  12
  13 # 18-Apr-1997: put the tab character into a variable to stop it getting
  14 # lost by accident (which has happened a couple of times).
  15
  16 # 19-Jan-1998: indented settings in the makefile weren't being handled
  17 # correctly; added [$st]* before \\([A-Z] in the pattern, to ignore leading
  18 # space. Oddly, the pattern previously read ^\([A-Z which didn't seem to
  19 # cause a problem (but did when the new bit was put in).
  20
  21 # 04-May-2005: if $1 is set, copy it into $MAKE, and then use $MAKE, if set,
  22 # instead of "make" so that if gmake is used, it is used consistently.
  23
  24 if [ "$1" != "" ] ; then MAKE=$1 ; fi
  25 if [ "$MAKE" = "" ] ; then MAKE=make ; fi
  26
  27 $MAKE buildconfig || exit 1
  28
  29 # BEWARE: tab characters needed in the following sed command. They have had
  30 # a nasty tendency to get lost in the past, causing a problem if a tab has
  31 # actually been present in makefile. Use a variable to hold a space and a
  32 # tab to keep the tab in one place. This makes the sed option horrendous to
  33 # read, but the whole script is safer.
  34
  35 st='     '
  36
  37 (sed -n \
  38   "/\\\$/d;s/#.*\$//;s/^[$st]*\\([A-Z][^:$st]*\\)[$st]*=[$st]*\\([^$st]*\\)[$st]*\$/\\1=\\2 export \\1/p" \
  39   < Makefile ; echo "./buildconfig") | /bin/sh
  40
  41 # If buildconfig ends with an error code, it will have output an error
  42 # message. Ensure that a broken config.h gets deleted.
  43
  44 if [ $? != 0 ] ; then
  45   rm -f config.h
  46   exit 1
  47 fi
  48
  49 # Double-check that config.h is complete.
  50
  51 if [ "`tail -1 config.h`" != "/* End of config.h */" ] ; then
  52   echo "*** config.h appears to be incomplete"
  53   echo "*** unexpected failure in buildconfig program"
  54   exit 1
  55 fi
  56
  57 echo ">>> config.h built"
  58 echo ""
  59
  60 # End of Configure-config.h