Did you ever find the answer to this?
I am trying to install PostgreSQL on OSX 10.6 and having the same issue.

checking for PostgreSQL support for PDO… yes
checking for pg_config… not found
configure: error: Cannot find libpq-fe.h. Please specify correct PostgreSQL installation path

The path I gave it was /Library/PgSQL8, which /is/ where my installation is, and it does have pg_config in ./bin there, and the libpq-fe.h in ./include there. But it refuses to believe me. I’ve set the directory and contents 777 in case that was the issue, and no joy. It refuses to accept that I have PgSQL installed there.

Any ideas what I should try next here?

wow, fast reply. After compiling it a few times it somehow works now. I also noticed that there actually is a guide for Snow Leopard.

You should consider linking the Snow Leopard articles from http://diymacserver.com/installing-php/.

Thanks for your help and keep up the good work.

I started compiling and installing my own mysql and apache2 following your directions.
When I install php5 – I can’t view the simple “It works”-HTML – I just get a blank page. When I uncomment the php5 module – it works.

Any ideas? Thanks a lot.

/var/log/httpd/error_log:
[Thu Jan 07 19:09:13 2010] [notice] Apache/2.2.14 (Unix) mod_ssl/2.2.14 OpenSSL/0.9.8k DAV/2 PHP/5.2.12 configured — resuming normal operations
[Thu Jan 07 19:09:17 2010] [notice] child pid 81240 exit signal Segmentation fault (11)

ld warning: in /usr/local/apache2/bin/httpd, file is not of required architecture
ld warning: in /usr/local/apache2/lib/libaprutil.dylib, file is not of required architecture
ld warning: in /usr/local/apache2/lib/libapr.dylib, file is not of required architecture
Undefined symbols:
“_ap_server_root_relative”, referenced from:
_php_apache_phpini_set in apache_config.o
“_apr_brigade_flatten”, referenced from:
_php_apache_sapi_read_post in sapi_apache2.o
“_apr_table_unset”, referenced from:
_php_apache_request_ctor in sapi_apache2.o
_php_apache_request_ctor in sapi_apache2.o
_php_apache_request_ctor in sapi_apache2.o
_php_apache_request_ctor in sapi_apache2.o
“_apr_pool_cleanup_null”, referenced from:
_php_apache_server_startup in sapi_apache2.o
_php_apache_server_startup in sapi_apache2.o
_php_handler in sapi_apache2.o
_php_apache_child_init in sapi_apache2.o
_create_php_config in apache_config.o
“_apr_brigade_create”, referenced from:
_php_handler in sapi_apache2.o
“_ap_destroy_sub_req”, referenced from:
_zif_virtual in php_functions.o
_zif_virtual in php_functions.o
_zif_apache_lookup_uri in php_functions.o
_zif_apache_lookup_uri in php_functions.o
“_unixd_config”, referenced from:
_zm_info_apache in php_functions.o
“_apr_brigade_cleanup”, referenced from:
_php_apache_sapi_read_post in sapi_apache2.o
_php_handler in sapi_apache2.o
“_apr_pstrdup”, referenced from:
_php_apache_sapi_send_headers in sapi_apache2.o
_php_apache_sapi_send_headers in sapi_apache2.o
_php_apache_request_ctor in sapi_apache2.o
_php_apache_request_ctor in sapi_apache2.o
_php_apache_request_ctor in sapi_apache2.o
_php_apache_request_ctor in sapi_apache2.o
_real_value_hnd in apache_config.o
“_ap_add_common_vars”, referenced from:
_php_handler in sapi_apache2.o
“_apr_table_add”, referenced from:
_php_apache_sapi_header_handler in sapi_apache2.o
“_apr_pool_cleanup_run”, referenced from:
_php_apache_ini_dtor in sapi_apache2.o
“_apr_table_get”, referenced from:
_php_apache_sapi_read_cookies in sapi_apache2.o
_php_apache_sapi_getenv in sapi_apache2.o
_php_apache_request_ctor in sapi_apache2.o
_php_apache_request_ctor in sapi_apache2.o
_php_apache_request_ctor in sapi_apache2.o
_zif_apache_note in php_functions.o
_zif_apache_getenv in php_functions.o
“_apr_table_set”, referenced from:
_php_apache_sapi_header_handler in sapi_apache2.o
_php_apache_sapi_send_headers in sapi_apache2.o
_php_handler in sapi_apache2.o
_zif_apache_note in php_functions.o
_zif_apache_setenv in php_functions.o
“_ap_set_content_type”, referenced from:
_php_apache_sapi_send_headers in sapi_apache2.o
“_ap_hook_pre_config”, referenced from:
_php_ap2_register_hook in sapi_apache2.o
“_ap_add_version_component”, referenced from:
_php_apache_server_startup in sapi_apache2.o
“_ap_rflush”, referenced from:
_php_apache_sapi_flush in sapi_apache2.o
_zif_virtual in php_functions.o
“_ap_auth_type”, referenced from:
_php_apache_request_ctor in sapi_apache2.o
“_ap_hook_handler”, referenced from:
_php_ap2_register_hook in sapi_apache2.o
“_apr_psprintf”, referenced from:
_php_handler in sapi_apache2.o
“_apr_bucket_eos_create”, referenced from:
_php_handler in sapi_apache2.o
“_ap_get_server_version”, referenced from:
_php_apache_get_version in php_functions.o
“_ap_update_mtime”, referenced from:
_php_handler in sapi_apache2.o
“_ap_log_rerror”, referenced from:
_php_apache_sapi_log_message in sapi_apache2.o
_php_apache_sapi_log_message_ex in sapi_apache2.o
“_ap_loaded_modules”, referenced from:
_zif_apache_get_modules in php_functions.o
_zm_info_apache in php_functions.o
_zm_info_apache in php_functions.o
“_environ”, referenced from:
_zif_putenv in basic_functions.o
_php_print_info in info.o
__php_import_environment_variables in php_variables.o
“_ap_get_brigade”, referenced from:
_php_apache_sapi_read_post in sapi_apache2.o
“_ap_pass_brigade”, referenced from:
_php_handler in sapi_apache2.o
“_ap_hook_child_init”, referenced from:
_php_ap2_register_hook in sapi_apache2.o
“_ap_server_root”, referenced from:
_zm_info_apache in php_functions.o
“_ap_log_error”, referenced from:
_php_apache_sapi_log_message in sapi_apache2.o
_php_pre_config in sapi_apache2.o
“_apr_pool_cleanup_register”, referenced from:
_php_apache_server_startup in sapi_apache2.o
_php_handler in sapi_apache2.o
_php_apache_child_init in sapi_apache2.o
_create_php_config in apache_config.o
“_apr_snprintf”, referenced from:
_zm_info_apache in php_functions.o
“_ap_rwrite”, referenced from:
_php_apache_sapi_ub_write in sapi_apache2.o
“_apr_pool_userdata_get”, referenced from:
_php_apache_server_startup in sapi_apache2.o
“_apr_pool_userdata_set”, referenced from:
_php_apache_server_startup in sapi_apache2.o
“_ap_add_cgi_vars”, referenced from:
_php_handler in sapi_apache2.o
“_ap_sub_req_lookup_uri”, referenced from:
_php_apache_lookup_uri in php_functions.o
“_apr_table_elts”, referenced from:
_php_apache_sapi_register_variables in sapi_apache2.o
_zif_apache_request_headers in php_functions.o
_zif_apache_response_headers in php_functions.o
_zm_info_apache in php_functions.o
_zm_info_apache in php_functions.o
_zm_info_apache in php_functions.o
“_apr_palloc”, referenced from:
_php_handler in sapi_apache2.o
_create_php_config in apache_config.o
“_ap_mpm_query”, referenced from:
_php_pre_config in sapi_apache2.o
_zm_info_apache in php_functions.o
“_ap_hook_post_config”, referenced from:
_php_ap2_register_hook in sapi_apache2.o
“_ap_set_last_modified”, referenced from:
_php_handler in sapi_apache2.o
“_ap_run_sub_req”, referenced from:
_zif_virtual in php_functions.o
ld: symbol(s) not found
collect2: ld returned 1 exit status
make: *** [libs/libphp5.bundle] Error 1

Not sure whats wrong?