Hi Here's my command line: apxs -o mod_jk.so -DSOLARIS -I../jk -I/usr/java/include -I/ usr/java/include/solaris -lposix4 -ldl -lxnet -c *.c ../jk/*.c It's apache 1.3.14 and tomcat 3.2 distribution (NOT from CVS) I had to add the "-lposix4 -ldl -lxnet" directives to eliminate linker errors. However, I still get a whole slew of errors: Undefined first referenced symbol in file ap_pstrdup mod_jk.o ap_reset_timeout mod_jk.o ap_table_set mod_jk.o ap_update_mtime mod_jk.o ap_table_get mod_jk.o ap_get_server_version mod_jk.o ap_bwrite mod_jk.o ap_overlay_tables mod_jk.o ap_pcalloc mod_jk.o ap_add_common_vars mod_jk.o ap_setup_client_block mod_jk.o ap_send_http_header mod_jk.o ap_psprintf mod_jk.o ap_add_version_component mod_jk.o ap_palloc mod_jk.o ap_bflush mod_jk.o ap_table_setn mod_jk.o ap_log_error mod_jk.o ap_get_client_block mod_jk.o ap_should_client_block mod_jk.o ap_content_type_tolower mod_jk.o ap_get_remote_host mod_jk.o ap_make_table mod_jk.o ap_pvsprintf mod_jk.o ap_parseHTTPdate mod_jk.o ap_set_last_modified mod_jk.o ap_table_add mod_jk.o main /usr/local/lib/gcc-lib/sparc-sun-solaris2.6/2.8.0/crt1.o ap_bsetflag mod_jk.o ld: fatal: Symbol referencing errors. No output written to mod_jk.so apxs:Break: Command failed with rc=1 It looks like a simple missing library (and an apache one at that) but I can't find it anywhere. I'm not a Solaris/Unix guru, so please bear with me... Any clues, anyone? BTW, I had to hack apxs to use gcc as the linker. configure apparently failed to set that up. Thanks --johnt