Hello, GNU Classpath build fails as follows with stock Fedora 17 libtools: [penberg@golgotha classpath]$ sh autogen.sh configure.ac:505: warning: AC_LIB_PREPARE_PREFIX is m4_require'd but not m4_defun'd m4/iconv.m4:11: AM_ICONV_LINKFLAGS_BODY is expanded from... m4/iconv.m4:22: AM_ICONV_LINK is expanded from... m4/iconv.m4:77: AM_ICONV is expanded from... configure.ac:505: the top level configure.ac:505: warning: AC_LIB_RPATH is m4_require'd but not m4_defun'd m4/iconv.m4:11: AM_ICONV_LINKFLAGS_BODY is expanded from... m4/iconv.m4:22: AM_ICONV_LINK is expanded from... m4/iconv.m4:77: AM_ICONV is expanded from... configure.ac:505: the top level configure.ac:505: warning: AC_LIB_PREPARE_PREFIX is m4_require'd but not m4_defun'd m4/iconv.m4:11: AM_ICONV_LINKFLAGS_BODY is expanded from... m4/iconv.m4:22: AM_ICONV_LINK is expanded from... m4/iconv.m4:77: AM_ICONV is expanded from... configure.ac:505: the top level configure.ac:505: warning: AC_LIB_RPATH is m4_require'd but not m4_defun'd m4/iconv.m4:11: AM_ICONV_LINKFLAGS_BODY is expanded from... m4/iconv.m4:22: AM_ICONV_LINK is expanded from... m4/iconv.m4:77: AM_ICONV is expanded from... configure.ac:505: the top level libtoolize: putting auxiliary files in `.'. libtoolize: copying file `./ltmain.sh' libtoolize: putting macros in AC_CONFIG_MACRO_DIR, `m4'. libtoolize: copying file `m4/libtool.m4' libtoolize: copying file `m4/ltoptions.m4' libtoolize: copying file `m4/ltsugar.m4' libtoolize: copying file `m4/ltversion.m4' libtoolize: copying file `m4/lt~obsolete.m4' configure.ac:505: warning: AC_LIB_PREPARE_PREFIX is m4_require'd but not m4_defun'd m4/iconv.m4:11: AM_ICONV_LINKFLAGS_BODY is expanded from... m4/iconv.m4:22: AM_ICONV_LINK is expanded from... m4/iconv.m4:77: AM_ICONV is expanded from... configure.ac:505: the top level configure.ac:505: warning: AC_LIB_RPATH is m4_require'd but not m4_defun'd m4/iconv.m4:11: AM_ICONV_LINKFLAGS_BODY is expanded from... m4/iconv.m4:22: AM_ICONV_LINK is expanded from... m4/iconv.m4:77: AM_ICONV is expanded from... configure.ac:505: the top level configure.ac:505: warning: AC_LIB_PREPARE_PREFIX is m4_require'd but not m4_defun'd m4/iconv.m4:11: AM_ICONV_LINKFLAGS_BODY is expanded from... m4/iconv.m4:22: AM_ICONV_LINK is expanded from... m4/iconv.m4:77: AM_ICONV is expanded from... configure.ac:505: the top level configure.ac:505: warning: AC_LIB_RPATH is m4_require'd but not m4_defun'd m4/iconv.m4:11: AM_ICONV_LINKFLAGS_BODY is expanded from... m4/iconv.m4:22: AM_ICONV_LINK is expanded from... m4/iconv.m4:77: AM_ICONV is expanded from... configure.ac:505: the top level configure:18624: error: possibly undefined macro: AC_LIB_PREPARE_PREFIX If this token and others are legitimate, please use m4_pattern_allow. See the Autoconf documentation. configure:18625: error: possibly undefined macro: AC_LIB_RPATH configure:18630: error: possibly undefined macro: AC_LIB_LINKFLAGS_BODY configure:18638: error: possibly undefined macro: AC_LIB_APPENDTOVAR autoreconf: /usr/bin/autoconf failed with exit status: 1 Is there any reason we depend on an older version of libtool? Pekka