I tried do compile php with the '--with-imap' and with the '--with-cpdflib' options. If I only activated the '--with-imap' option or only the '--with-cpdflib' option it worked. But if I activated both together I received a strange error message in the compile-step:

---compiler-messages:
make[2]: Entering directory `/usr/installed-software/php-4.0.1pl2/main'
/bin/sh /usr/installed-software/php-4.0.1pl2/libtool --silent --mode=compile gcc -DHAVE_CONFIG_H -I. -I/usr/installed-software/php-4.0.1pl2/main -I/usr/installed-software/php-4.0.1pl2 -I/usr/installed-software/php-4.0.1pl2/main -I/usr/local/apache/include -I/usr/installed-software/php-4.0.1pl2/Zend -I/usr/installed-software/php-4.0.1pl2 -I/usr/include/freetype -I/usr/include/gd -I/usr/include/imap -I/usr/installed-software/php-4.0.1pl2/ext/mysql/libmysql -I/usr/installed-software/php-4.0.1pl2/ext/xml/expat/xmltok -I/usr/installed-software/php-4.0.1pl2/ext/xml/expat/xmlparse  -DXML_BYTE_ORDER=12 -g -O2  -c main.c
/bin/sh /usr/installed-software/php-4.0.1pl2/libtool --silent --mode=compile gcc -DHAVE_CONFIG_H -I. -I/usr/installed-software/php-4.0.1pl2/main -I/usr/installed-software/php-4.0.1pl2 -I/usr/installed-software/php-4.0.1pl2/main -I/usr/local/apache/include -I/usr/installed-software/php-4.0.1pl2/Zend -I/usr/installed-software/php-4.0.1pl2 -I/usr/include/freetype -I/usr/include/gd -I/usr/include/imap -I/usr/installed-software/php-4.0.1pl2/ext/mysql/libmysql -I/usr/installed-software/php-4.0.1pl2/ext/xml/expat/xmltok -I/usr/installed-software/php-4.0.1pl2/ext/xml/expat/xmlparse  -DXML_BYTE_ORDER=12 -g -O2  -c internal_functions.c
In file included from /usr/installed-software/php-4.0.1pl2/ext/cpdf/php_cpdf.h:36,
                 from internal_functions.c:42:
/usr/local/include/cpdflib.h:801: parse error before `1'
make[2]: *** [internal_functions.lo] Error 1
make[2]: Leaving directory `/usr/installed-software/php-4.0.1pl2/main'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/usr/installed-software/php-4.0.1pl2/main'
make: *** [all-recursive] Error 1
---end compiler-messages:

I used cpdflib Version 2.02-r1-1 (newest).
There must be something incompatible in the source-files! Maybe it's an error in cpdflib, imap or php, I don't know.

I also tried the '--with-imap' and '--with-pdflib' (not --with-cpdflib) options. With these options it worked normally.

thank you for your work, php is a great tool!