The Tcpdump Group git mirrors - tcpslice/blob - autogen.sh

   1 #!/bin/sh -e
   2
   3 : "${AUTORECONF:=autoreconf}"
   4
   5 AUTORECONFVERSION=`$AUTORECONF --version 2>&1 | grep "^autoreconf" | sed 's/.*) *//'`
   6
   7 maj=`echo "$AUTORECONFVERSION" | cut -d. -f1`
   8 min=`echo "$AUTORECONFVERSION" | cut -d. -f2`
   9 # The minimum required version of autoconf is currently 2.69.
  10 if [ "$maj" = "" ] || [ "$min" = "" ] || \
  11    [ "$maj" -lt 2 ] || { [ "$maj" -eq 2 ] && [ "$min" -lt 69 ]; }; then
  12         cat >&2 <<-EOF
  13         Please install the 'autoconf' package version 2.69 or later.
  14         If version 2.69 or later is already installed and there is no
  15         autoconf default, it may be necessary to set the AUTORECONF
  16         environment variable to enable the one to use, like:
  17         AUTORECONF=autoreconf-2.69 ./autogen.sh
  18         or
  19         AUTORECONF=autoreconf-2.71 ./autogen.sh
  20         EOF
  21         exit 1
  22 fi
  23
  24 echo "$AUTORECONF identification: $AUTORECONFVERSION"
  25
  26 # configure.ac is an Autoconf 2.69 file, but it works as expected even with
  27 # Autoconf 2.72.  However, in Autoconf versions 2.70 and later obsolete
  28 # construct warnings are enabled by default, which adds varying (depending on
  29 # the branch) amount of noise to the build matrix output, so provide a means
  30 # to silence that.
  31 env ${AUTOCONF_WARNINGS:+WARNINGS="$AUTOCONF_WARNINGS"} "$AUTORECONF" -f
  32
  33 # Autoconf 2.71 adds a blank line after the final "exit 0" on Linux, but not
  34 # on OpenBSD.  Remove this difference to make it easier to compare the result
  35 # of "make releasetar" across different platforms.  From sed one-liners:
  36 # "delete all trailing blank lines at end of file (works on all seds)".  Don't
  37 # use mktemp(1) because AIX does not have it.
  38 CONFIGURE_NEW="configure.new$$"
  39 sed -e :a -e '/^\n*$/{$d;N;ba' -e '}' <configure >"$CONFIGURE_NEW"
  40 cmp -s configure "$CONFIGURE_NEW" || cat "$CONFIGURE_NEW" >configure
  41 rm -f "$CONFIGURE_NEW"