What's the output of configure (regarding curl)?

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I was experiencing the same issue when trying to install pecl_http 1.6.0 under MacOS X 10.4.11 and PHP 5.2.6_1 (installed via MacPorts).  The machine had both the Apple and MacPorts distributions of cURL.  The installer was finding Apple's installation of cURL rather than the MacPorts one.  Just hiding the native cURL by renaming files & folders wasn't sufficient, as the configure script wasn't checking where MacPorts had installed cURL (/opt/local).  Adding '/opt/local' before '/usr' in all directory searches in the configure script seemed to work.  This may not be a suitable alteration for pecl_http configuration in general; perhaps a port is in order.  Does anyone have any comments on whether the fix should be integrated into the main pecl_http package, or rolled into a port for MacPorts?  I'm guessing a similar fix is needed for Fink, adding '/sw' (I think) to the search paths.

I also needed to manually set extension_dir in php.ini and enable the extension, but this is (probably) a different issue.

Here's the patch for my changes:
--- config9.m4.orig     2008-06-25 15:51:48.000000000 -0400
+++ config9.m4  2008-06-25 16:18:58.000000000 -0400
@@ -21,6 +21,9 @@
 [  --with-http-magic-mime[=LIBMAGICDIR]
                            HTTP: with magic mime response content type guessing], "no", "no")
 
+
+SEARCHDIRS="/opt/local /usr/local /usr /opt"
+
 if test "$PHP_HTTP" != "no"; then
 
        ifdef([AC_PROG_EGREP], [
@@ -121,7 +124,7 @@
        if test "$PHP_HTTP_ZLIB_COMPRESSION" != "no"; then
                AC_MSG_CHECKING([for zlib.h])
                ZLIB_DIR=
-               for i in "$PHP_HTTP_ZLIB_COMPRESSION" "$PHP_ZLIB_DIR" "$PHP_ZLIB" /usr/local /usr /opt; do
+               for i in "$PHP_HTTP_ZLIB_COMPRESSION" "$PHP_ZLIB_DIR" "$PHP_ZLIB" $SEARCHDIRS; do
                        if test -f "$i/include/zlib.h"; then
                                ZLIB_DIR=$i
                                break;
@@ -151,7 +154,8 @@
        if test "$PHP_HTTP_CURL_REQUESTS" != "no"; then
                AC_MSG_CHECKING([for curl/curl.h])
                CURL_DIR=
-               for i in "$PHP_HTTP_CURL_REQUESTS" /usr/local /usr /opt; do
+               for i in "$PHP_HTTP_CURL_REQUESTS" $SEARCHDIRS; do
+                       AC_MSG_RESULT([looking for curl.h in $i])
                        if test -f "$i/include/curl/curl.h"; then
                                CURL_DIR=$i
                                break
@@ -322,7 +326,7 @@
                        ], [
                                AC_MSG_CHECKING([for event.h])
                                EVENT_DIR=
-                               for i in "$PHP_HTTP_CURL_LIBEVENT" /usr/local /usr /opt; do
+                               for i in "$PHP_HTTP_CURL_LIBEVENT" $SEARCHDIRS; do
                                        if test -f "$i/include/event.h"; then
                                                EVENT_DIR=$i
                                                break
@@ -370,7 +374,7 @@
        if test "$PHP_HTTP_MAGIC_MIME" != "no"; then
                AC_MSG_CHECKING([for magic.h])
                MAGIC_DIR=
-               for i in "$PHP_HTTP_MAGIC_MIME" /usr/local /usr /opt; do
+               for i in "$PHP_HTTP_MAGIC_MIME" $SEARCHDIRS; do
                        if test -f "$i/include/magic.h"; then
                                MAGIC_DIR=$i
                                break