kde-misc/kbeam-0.61-r1 fails to build with dev-libs/openobex-1.5, I was able to build kbeam with dev-libs/openobex-1.3. Here is the autoconf log: ***** autoconf ***** ***** PWD: /var/tmp/portage/kde-misc/kbeam-0.61-r1/work/kbeam-0.61 ***** autoconf configure.in:54: warning: AC_CACHE_VAL(lt_prog_compiler_static_works, ...): suspicious cache-id, must contain _cv_ to be cached ../../lib/autoconf/general.m4:1974: AC_CACHE_VAL is expanded from... ../../lib/autoconf/general.m4:1994: AC_CACHE_CHECK is expanded from... acinclude.m4:6015: AC_LIBTOOL_LINKER_OPTION is expanded from... acinclude.m4:7875: _LT_AC_LANG_C_CONFIG is expanded from... acinclude.m4:7874: AC_LIBTOOL_LANG_C_CONFIG is expanded from... acinclude.m4:5499: AC_LIBTOOL_SETUP is expanded from... acinclude.m4:5479: _AC_PROG_LIBTOOL is expanded from... acinclude.m4:5444: AC_PROG_LIBTOOL is expanded from... acinclude.m4:11180: AM_PROG_LIBTOOL is expanded from... acinclude.m4:3094: KDE_PROG_LIBTOOL is expanded from... configure.in:54: the top level configure.in:54: warning: AC_CACHE_VAL(lt_prog_compiler_pic_works, ...): suspicious cache-id, must contain _cv_ to be cached acinclude.m4:5972: AC_LIBTOOL_COMPILER_OPTION is expanded from... acinclude.m4:9889: AC_LIBTOOL_PROG_COMPILER_PIC is expanded from... configure.in:54: warning: AC_CACHE_VAL(lt_prog_compiler_pic_works_CXX, ...): suspicious cache-id, must contain _cv_ to be cached acinclude.m4:8009: _LT_AC_LANG_CXX_CONFIG is expanded from... acinclude.m4:8008: AC_LIBTOOL_LANG_CXX_CONFIG is expanded from... acinclude.m4:7012: _LT_AC_TAGCONFIG is expanded from... configure.in:54: warning: AC_CACHE_VAL(lt_prog_compiler_pic_works_F77, ...): suspicious cache-id, must contain _cv_ to be cached acinclude.m4:9014: _LT_AC_LANG_F77_CONFIG is expanded from... acinclude.m4:9013: AC_LIBTOOL_LANG_F77_CONFIG is expanded from... configure.in:54: warning: AC_CACHE_VAL(lt_prog_compiler_pic_works_GCJ, ...): suspicious cache-id, must contain _cv_ to be cached acinclude.m4:9114: _LT_AC_LANG_GCJ_CONFIG is expanded from... acinclude.m4:9113: AC_LIBTOOL_LANG_GCJ_CONFIG is expanded from... configure.in:71: error: possibly undefined macro: AM_PATH_OPENOBEX If this token and others are legitimate, please use m4_pattern_allow. See the Autoconf documentation. Reproducible: Always