* configure.ac (LT_INIT): Specify (otherwise Automake 1.13.4 reports
error at "check_LTLIBRARIES" item in Makefile.am); add comment about
"LIBTOOL is undefined" error.
AM_PROG_CC_C_O
AC_PROG_CXX
-
AM_PROG_AS
-
AC_PROG_INSTALL
+LT_INIT
+# Note: If Autoconf reports that LIBTOOL (or AC_ENABLE_SHARED, or
+# AC_PROG_LIBTOOL) is undefined, Libtool installation should be checked.
# Special CFLAGS to use when building
gc_cflags=""