re PR target/65535 (powerpc64-freebsd build failure)

PR target/65535
* config.gcc: Exit with a comment when we do not have a major version
number for the FreeBSD target.

From-SVN: r222192

gcc/ChangeLog

+2015-04-17  Andreas Tobler  <andreast@gcc.gnu.org>
+
+	PR target/65535
+	* config.gcc: Exit with a comment when we do not have a major version
+	number for the FreeBSD target.
+
 2015-04-17  Jakub Jelinek  <jakub@redhat.com>
 
 	PR target/65689

gcc/config.gcc

@@ -664,6 +664,11 @@ case ${target} in
   gas=yes
   gnu_ld=yes
   fbsd_major=`echo ${target} | sed -e 's/.*freebsd//g' | sed -e 's/\..*//g'`
+  if test "$fbsd_major" = ""; then
+    echo "Specify the major version number of the targeted FreeBSD release"
+    echo "like this: --target=amd64-unknown-freebsd10.1"
+    exit 1
+  fi
   tm_defines="${tm_defines} FBSD_MAJOR=${fbsd_major}"
   tmake_file="t-slibgcc"
   case ${enable_threads} in