I was hoping to be able to build Freeswitch using VPATH, that is have the src and object directories in different locations. This ensures that the src tree is unspoilt and I don't have to reclean it if I do updates. However this does not seem to work: [sjmudd@mad07 src]$ pwd /Users/sjmudd/src [sjmudd@mad07 src]$ ls -l | grep freeswitch drwxr-xr-x 3 sjmudd staff 102 13 Oct 07:52 freeswitch-obj drwxr-xr-x 56 sjmudd staff 1904 13 Oct 14:29 freeswitch-svn [sjmudd@mad07 src]$ cd freeswitch-obj [sjmudd@mad07 freeswitch-obj]$ ../freeswitch-svn/configure checking for a BSD-compatible install... /usr/bin/install -c checking whether build environment is sane... yes checking for a thread-safe mkdir -p... ../freeswitch-svn/build/config/install-sh -c -d checking for gawk... no checking for mawk... no checking for nawk... no checking for awk... awk checking whether make sets $(MAKE)... yes configure: error: source directory already configured; run "make distclean" there first [sjmudd@mad07 freeswitch-obj]$ cd ../freeswitch-svn [sjmudd@mad07 freeswitch-svn]$ make distclean Making clean in build Making clean in src Making clean in mod making clean mod_amr making clean mod_cdr_csv making clean mod_cluechoo making clean mod_commands making clean mod_conference making clean mod_console making clean mod_dialplan_asterisk making clean mod_dialplan_xml making clean mod_dptools making clean mod_enum making clean mod_esf making clean mod_event_socket making clean mod_expr making clean mod_fifo making clean mod_file_string making clean mod_fsv making clean mod_g723_1 making clean mod_g729 making clean mod_h26x making clean mod_iax making clean mod_ilbc making clean mod_limit making clean mod_local_stream making clean mod_logfile making clean mod_loopback making clean mod_lua making clean mod_native_file making clean mod_say_en making clean mod_siren making clean mod_sndfile making clean mod_sofia rm -f "./so_locations" making clean mod_speex making clean mod_spidermonkey making clean mod_spidermonkey_core_db making clean mod_spidermonkey_socket making clean mod_spidermonkey_teletone making clean mod_syslog making clean mod_tone_stream making clean mod_voicemail making clean mod_voipcodecs making clean mod_xml_cdr making clean mod_xml_rpc making clean mod_alsa making clean mod_amrwb making clean mod_celt making clean mod_cepstral making clean mod_dahdi_codec making clean mod_dialplan_directory making clean mod_dingaling making clean mod_easyroute making clean mod_erlang_event making clean mod_event_multicast making clean mod_fax making clean mod_flite WARNING mod_http is not a valid FreeSWITCH module dir, skipping it..... making clean mod_lcr making clean mod_ldap making clean mod_memcache making clean mod_nibblebill making clean mod_opal Package opal was not found in the pkg-config search path. Perhaps you should add the directory containing `opal.pc' to the PKG_CONFIG_PATH environment variable No package 'opal' found Package opal was not found in the pkg-config search path. Perhaps you should add the directory containing `opal.pc' to the PKG_CONFIG_PATH environment variable No package 'opal' found making clean mod_openzap rm -f "./so_locations" rm -f "./so_locations" rm -f "./so_locations" rm -f "./so_locations" rm -f "./so_locations" rm -f "./so_locations" rm -f "./so_locations" rm -f testtones testtones rm -f detect_tones detect_tones rm -f detect_dtmf detect_dtmf rm -f testisdn testisdn rm -f testpri testpri rm -f testr2 testr2 rm -f testboost testboost rm -f testanalog testanalog rm -f testapp testapp rm -f testcid testcid making clean mod_perl making clean mod_pocketsphinx making clean mod_portaudio making clean mod_python making clean mod_radius_cdr making clean mod_rss making clean mod_say_de making clean mod_say_es making clean mod_say_fr making clean mod_say_it making clean mod_say_nl making clean mod_say_ru making clean mod_say_zh making clean mod_shout making clean mod_skypiax making clean mod_snom making clean mod_soundtouch making clean mod_spidermonkey_odbc making clean mod_spy making clean mod_vmd making clean mod_xml_curl making clean mod_xml_ldap making clean mod_yaml Making clean in . Making clean in . rm -f freeswitch freeswitch rm -f fs_cli fs_cli rm -f fs_ivrd fs_ivrd rm -f "./so_locations" [sjmudd@mad07 freeswitch-svn]$ cd ../freeswitch-obj [sjmudd@mad07 freeswitch-obj]$ ../freeswitch-svn/configure checking for a BSD-compatible install... /usr/bin/install -c checking whether build environment is sane... yes checking for a thread-safe mkdir -p... ../freeswitch-svn/build/config/install-sh -c -d checking for gawk... no checking for mawk... no checking for nawk... no checking for awk... awk checking whether make sets $(MAKE)... yes configure: error: source directory already configured; run "make distclean" there first [sjmudd@mad07 freeswitch-obj]$ This is with [sjmudd@mad07 freeswitch-svn]$ svn info Path: . URL: http://svn.freeswitch.org/svn/freeswitch/trunk Repository Root: http://svn.freeswitch.org/svn Repository UUID: d0543943-73ff-0310-b7d9-9358b9ac24b2 Revision: 15138 Node Kind: directory Schedule: normal Last Changed Author: anthm Last Changed Rev: 15138 Last Changed Date: 2009-10-12 16:58:09 +0200 (Mon, 12 Oct 2009) Simon