Try this patch for config.m4:

--- config.m4.orig	2011-04-19 05:54:53.000000000 -0700
+++ config.m4	2011-04-22 15:41:47.323151336 -0700
@@ -76,10 +76,17 @@
   ])
 
   dnl rrd_graph_v is available in 1.3.0+
-  PHP_CHECK_FUNC(rrd_graph_v, rrd)
-  if test "$ac_cv_func_rrd_graph_v" != yes; then
-    AC_MSG_ERROR([rrd lib version seems older than 1.3.0, update to 1.3.0+])
-  fi
+  PHP_CHECK_LIBRARY(rrd, rrd_graph_v,
+  [],[
+    PHP_CHECK_LIBRARY(rrd, rrd_graph_v,
+    [],[
+      AC_MSG_ERROR([rrd lib version seems older than 1.3.0, update to 1.3.0+])
+    ],[
+      -L$RRDTOOL_LIBDIR
+    ])
+  ],[
+    -L$RRDTOOL_LIBDIR
+  ])
 
   dnl rrd_lastupdate_r available in 1.4.0+
   PHP_CHECK_FUNC(rrd_lastupdate_r, rrd)

The same change should be done for rrd_lastupdate_r.

I had same issue on Solaris 10 and after applying this patch it detected that my installed RRDtool library has rrd_graph_v function.

You will need to untar the tarball, patch, then run phpize and then ./configure, make, make install manually.

bernard at vanhpc dot org: I don't think that your solutions is right.

Regarding log, it seems that problem is missing rrd lib when the configure checks for rrd_graph_v:

configure:6934: checking for rrd_graph_v in -lrrd
configure:6959: cc -o conftest -g  -O0   conftest.c -lrrd   >&5
/usr/bin/ld: cannot find -lrrd 

PHP_CHECK_FUNC(rrd_graph_v, rrd) is OK, it fall backs to check presence of rrd_graph_v in librrd. I need to modify library flags prior to this check. Modified version of package with a patch (see diff in the trunk) is on
http://vhost.mirin.cz/rrd-310515.tgz. Try to phpize install for this one, if fails, send me a config.log again. Thanks

Still not working for me with the patched snapshot.  config.log here:

http://fjrkr5af.joyent.us/config.log

Should I try passing --with-rrd to configure?

i committed this into the FreeBSD ports tree today. All i had to add was:

CONFIGURE_ENV+= LDFLAGS="-L${LOCALBASE}/lib"

The last config.log shows that -L/usr/local/lib is still missing.

HTH,
Florian

Hm, problem is still here. Florian is right, I thought that 
if I call PHP_ADD_LIBRARY_WITH_PATH()
before PHP_CHECK_FUNC(rrd_graph_v, rrd), it adds necessary -L options for LDFLAGS. Obviously doesn't. Maybe there is some php libtool magic for this, I don't have any experiences with libtool.

I'll try to investigate it little more, maybe I use temporary "LDFLAGS" before PHP_CHECK_FUNC.

I used temporary LDFLAGS for all PHP_CHECK_FUNC(), patch is in the trunk.

Test please new snapshot at http://vhost.mirin.cz/rrd-310551.tgz

Package installation should work via "pecl install http://vhost.mirin.cz/rrd-310551.tgz" and via phpize way too without any LDFLAGS modifications.

Tested rrd-310551.tgz on Solaris 10 and it works -- thanks!

This bug has been fixed in SVN.

In case this was a documentation problem, the fix will show up at the
end of next Sunday (CET) on pecl.php.net.

In case this was a pecl.php.net website problem, the change will show
up on the website in short time.
 
Thank you for the report, and for helping us make PECL better.