gnu/dist/grep/autogen.sh

   1 #!/bin/sh
   2 # We want to support both legacy and current autoconf - this is a bit ugly...
   3 AC_VERSION=`autoconf --version 2>&1 |head -n1 |sed -e "s/.* //;s/\.//;s/[a-z]//"`
   4 if test -z "$AC_VERSION"; then
   5         echo "Warning: Couldn't determine autoconf version. Assuming a current version."
   6         AC_VERSION=252
   7 fi
   8 if test "$AC_VERSION" -lt 250; then
   9         rm -f acinclude.m4
  10         echo "#undef ssize_t" >acconfig.h
  11         for i in m4/*.m4; do
  12                 if cat $i |grep -q "jm_"; then
  13                         cat $i >>acinclude.m4
  14                 elif test ! -e `aclocal --print-ac-dir`/`basename $i`; then
  15                         cat $i >>acinclude.m4
  16                 fi
  17         done
  18         aclocal
  19 else
  20         aclocal -I m4
  21 fi
  22 autoheader
  23 automake -a
  24 if test "$AC_VERSION" -lt 250; then
  25         # Workaround for a bug in ancient versions of autoheader
  26         sed -e 's,#undef $,/* your autoheader is buggy */,g' config.hin >config.hin.new
  27         rm config.hin
  28         mv config.hin.new config.hin
  29         # Make sure config.hin doesn't get rebuilt after the workaround
  30         sed -e 's,@AUTOHEADER@,true,' Makefile.in >Makefile.in.new
  31         rm Makefile.in
  32         mv Makefile.in.new Makefile.in
  33 fi
  34 autoconf