The if line introduced in JDK-8198318 is missing a "test". Thanks to Jon and Erik for discovering the problem and the solution.
Bug: https://bugs.openjdk.java.net/browse/JDK-8198627 Patch inline: diff --git a/make/autoconf/basics.m4 b/make/autoconf/basics.m4 --- a/make/autoconf/basics.m4 +++ b/make/autoconf/basics.m4 @@ -263,7 +263,7 @@ READLINK_TESTED=yes fi - if test "x$READLINK" != x && "x$READLINK_ISGNU" != x; then + if test "x$READLINK" != x && test "x$READLINK_ISGNU" != x; then $1=`$READLINK -f [$]$1` else # Save the current directory for restoring afterwards /Magnus
