From the bug report:
"Suppose PATH points to an out-of date autoconf.
We can use the AUTOCONF environment variable with configure to override
finding autoconf on PATH, but that variable is not remembered, so
make reconfigure fails.
# Recipe:
rm -rf build
AUTOCONF=/usr/bin/autoconf PATH="$MOLDY/bin:$PATH" bash configure ...
# configure + make succeed
make reconfigure
# Fails with:
Using autoconf at $MOLDY/bin/autoconf [autoconf (GNU Autoconf) 2.62]
stdin:33: error: Autoconf version 2.69 or higher is required"
Bug: https://bugs.openjdk.java.net/browse/JDK-8218413
WebRev:
http://cr.openjdk.java.net/~ihse/JDK-8218413-preserve-AUTOCONF-for-reconfigure/webrev.01
/Magnus