Configuring PHP with:

./configure --prefix=/usr --sysconfdir=/etc --with-apxs2
--with-config-file-path=/etc --with-pear=/usr/share/pear --with-openssl
--with-zlib --with-bz2 --with-dom --with-dom-xslt --enable-exif
--enable-ftp --with-gd --with-gettext --with-iconv --with-imap
--with-imap-ssl --with-mcrypt --with-mysql --with-pcntl --with-pgsql
--with-pspell --enable-trans-sid

The compilation fails when it tries to compile the IMAP support,
complaining about:

ext/imap/php_imap.lo: In function `zm_startup_imap':
/home/users/jon/src/php4/ext/imap/php_imap.c:424: undefined reference to
`ssl_onceonlyinit'
collect2: ld returned 1 exit status

I can get it to compile by going into the file and commenting out that line, but I don't know what effect that's going to have on stability.

Please try using this CVS snapshot:

  http://snaps.php.net/php4-STABLE-latest.tar.gz
 
For Windows:
 
  http://snaps.php.net/win32/php4-win32-STABLE-latest.zip

No feedback was provided. The bug is being suspended because
we assume that you are no longer experiencing the problem.
If this is not the case and you are able to provide the
information that was requested earlier, please do so and
change the status of the bug back to "Open". Thank you.

The snapshot provided did not fix the bug.

Compiling on a Red Hat 9 box fails with:

ext/imap/php_imap.o(.text+0x463): In function `zm_startup_imap':
/usr/src/Apachetoolbox-1.5.64/src/php-snap/ext/imap/php_imap.c:428: undefined reference to `auth_gss'
ext/imap/php_imap.o(.text+0x46d):/usr/src/Apachetoolbox-1.5.64/src/php-snap/ext/
imap/php_imap.c:432: undefined reference to `ssl_onceonlyinit'
collect2: ld returned 1 exit status
make: *** [sapi/cli/php] Error 1

The following configure options were used:

CPPFLAGS=-I/usr/local/include
LDFLAGS=-L/usr/local/lib
./configure --prefix=/usr/local \
--with-apache=/usr/src/Apachetoolbox-1.5.64/apache_1.3.27 \
--with-imap=/usr \
--with-imap-ssl=/usr \
--with-kerberos=/usr/kerberos \
--with-mhash=/usr/local \
--with-mcrypt=/usr/local \
--with-openssl=/usr \
--with-curl=/usr \
--with-gettext=/usr \
--with-mysql=/usr \
--with-ldap \
--with-xml \
--with-gd=shared,/usr \
--with-jpeg-dir=/usr \
--with-png-dir=/usr \
--with-zlib-dir=/usr \
--with-freetype-dir=/usr \
--with-pspell=/usr \
--with-bz2=/usr \
--enable-gd-native-ttf \
--enable-calendar \
--enable-exif \
--enable-track-vars \
--enable-magic-quotes \
--enable-trans-sid \
--enable-wddx \
--enable-ftp \
--enable-inline-optimization \
--enable-memory-limit \
--enable-sysvshm \
--enable-force-cgi-redirect \
--enable-safe-mode

Do you have c-client installed?

4.3.1 isn't giving out that error on compilation anymore using c-client 2001.

Same problem on Mandrake 9.1

You just have c-client without ssl support with header files installed which have it. Not PHP bug.

I am recieving this error in the latest ports on FreeBSD (php 4.3.1).  I do have c-client installed.

This is a bodus :)
in file "configure" doesn't check wether SSL support Enabled
Was This:
   int main() {
        ssl_onceonlyinit();
        return 0;
    }

Replace With:
   int main() {
        #ifdef HAVE_IMAP_SSL
        ssl_onceonlyinit();
        #endif
        return 0;
    }