php5 fails to build in 10.5.7 because of faulty detection of libxml

[jhi]

$ sudo port -v install ph5p ... checking for atoll... yes checking for strftime... (cached) yes checking which regex library to use... php checking whether to enable LIBXML support... yes checking libxml2 install dir... /opt/local checking for xml2-config path... /opt/local/bin/xml2-config checking whether libxml build works... no configure: error: build test failed. Please check the config.log for details.

Warning: the following items did not execute (for php5): org.macports.activate org.macports.configure org.macports.build org.macports.destroot org.macports.install Error: Status 1 encountered during processing.

The libxml is happily installed, I checked with "sudo port install libxml", which ends up not installing it because the latest libxml already installed. If I look at the config.log (/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_ports_lang_php5/work/php-5.3.0/config.log), I see at the end:

... configure:20354: /usr/bin/gcc-4.0 -o conftest -O2 -gstabs -fvisibility=hidden -I/opt/local/include -no-cpp-precomp -L/opt/local/lib -Wl,-rpath,/opt/local/lib -L/opt/local/lib conftest.c

-lm -lxml2 -lz -liconv -lm 1>&5

configure: failed program was: #line 20343 "configure" #include "confdefs.h"

char xmlInitParser(); int main() {

xmlInitParser(); return 0;

}

Which will not work since the compile command is missing -lxml. If I create conftest.c with the above content, and copy the confdefs.h from the directory of config.log, AND add the -lxml, the test compiles and links. If I leave out the -lxml, I get this error:

Undefined symbols:

"_xmlInitParser", referenced from:

_main in ccGooSIo.o

ld: symbol(s) not found collect2: ld returned 1 exit status

So the configure test is missing -lxml?