+2014-06-20 Paul Eggert <eggert@cs.ucla.edu>
+
+ * configure.ac: Warn about --enable-link-time-optimization's issues
+ in --help message (Bug#17806).
+
+ Port to GCC 4.9.0 with link time optimization (Bug#17806).
+ * configure.ac (CFLAGS): With link time optimization,
+ use -ffat-lto-objects if supported; otherwise Emacs won't
+ build with GCC 4.9.0.
+
+2014-06-14 Paul Eggert <eggert@cs.ucla.edu>
+
+ Port part of the AIX fix to Solaris (Bug#17598).
+ * configure.ac (_REENTRANT): Define on Solaris if HAVE_PTHREAD.
+ This ports part of the recent AIX fixes to Solaris. It is needed
+ for the same reason that _THREAD_SAFE is needed on AIX, e.g., to
+ make sure that each thread has its own 'errno'.
+
2014-06-11 Paul Eggert <eggert@cs.ucla.edu>
Backport fcntl.h AIX fix from the trunk (Bug#17598).