usr/src/lib/libresolv2/include/probe_ipv6.sh

   1 #!/bin/sh
   2
   3 # Copyright 2003 by Sun Microsystems, Inc. All rights reserved.
   4 # Use is subject to license terms.
   5 #
   6 #pragma ident   "%Z%%M% %I%     %E% SMI"
   7
   8 set -e
   9 PATH=/bin:/usr/bin:$PATH; export PATH
  10 trap "rm -f tmp$$[abc].[oc]" 0
  11 target=port_ipv6
  12 new=new_${target}.h
  13 old=${target}.h
  14
  15 cat > tmp$$a.c <<EOF
  16 #include <sys/types.h>
  17 #include <netinet/in.h>
  18 struct sockaddr_in6 xx;
  19 EOF
  20
  21 cat > tmp$$b.c <<EOF
  22 #include <sys/types.h>
  23 #include <netinet/in.h>
  24 struct in6_addr xx;
  25 EOF
  26
  27 cat > tmp$$c.c <<EOF
  28 #include <sys/types.h>
  29 #include <netinet/in.h>
  30 struct sockaddr_in6 xx;
  31 main() { xx.sin6_scope_id = 0; }
  32 EOF
  33
  34 cat > ${new} <<EOF
  35
  36 /* This file is automatically generated. Do Not Edit. */
  37
  38 #ifndef ${target}_h
  39 #define ${target}_h
  40
  41 EOF
  42
  43 if ${CC} -c tmp$$a.c > /dev/null 2>&1
  44 then
  45         echo "#define HAS_INET6_STRUCTS" >> ${new}
  46         if ${CC} -c tmp$$b.c > /dev/null 2>&1
  47         then
  48                 :
  49         else
  50                 echo "#define in6_addr in_addr6" >> ${new}
  51         fi
  52         if ${CC} -c tmp$$c.c > /dev/null 2>&1
  53         then
  54                 echo "#define HAVE_SIN6_SCOPE_ID" >> ${new}
  55         else
  56                 echo "#undef HAVE_SIN6_SCOPE_ID" >> ${new}
  57         fi
  58 else
  59         echo "#undef HAS_INET6_STRUCTS" >> ${new}
  60 fi
  61 echo  >> ${new}
  62 echo "#endif" >> ${new}
  63 if [ -f ${old} ]; then
  64         if cmp -s ${new} ${old} ; then
  65                 rm -f ${new}
  66         else
  67                 rm -f ${old}
  68                 mv ${new} ${old}
  69         fi
  70 else
  71         mv ${new} ${old}
  72 fi
  73 exit 0