src/scripts/Configure-config.h

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