Compilation of PHP 4.0.2 with mcrypt support fails:

The error results from $SRCDIR/ext/mcrypt.c.

The lines:

mcrypt.c: In function `php_minit_mcrypt':
mcrypt.c:260: `MCRYPT_BLOWFISH_448' undeclared (first use in this function)
mcrypt.c:260: (Each undeclared identifier is reported only once
mcrypt.c:260: for each function it appears in.)
mcrypt.c:261: warning: passing arg 3 of `zend_register_long_constant' makes integer from pointer without a cast
mcrypt.c:262: warning: passing arg 3 of `zend_register_long_constant' makes integer from pointer without a cast
mcrypt.c:263: warning: passing arg 3 of `zend_register_long_constant' makes integer from pointer without a cast
mcrypt.c:264: warning: passing arg 3 of `zend_register_long_constant' makes integer from pointer without a cast
mcrypt.c:265: `MCRYPT_SAFER_64' undeclared (first use in this function)
mcrypt.c:266: `MCRYPT_SAFER_128' undeclared (first use in this function)
mcrypt.c:267: warning: passing arg 3 of `zend_register_long_constant' makes integer from pointer without a cast
mcrypt.c:268: warning: passing arg 3 of `zend_register_long_constant' makes integer from pointer without a cast
mcrypt.c:269: `MCRYPT_RC2_1024' undeclared (first use in this function)
mcrypt.c:270: `MCRYPT_TWOFISH_128' undeclared (first use in this function)
mcrypt.c:271: `MCRYPT_TWOFISH_192' undeclared (first use in this function)
mcrypt.c:272: `MCRYPT_TWOFISH_256' undeclared (first use in this function)
mcrypt.c:273: `MCRYPT_BLOWFISH_128' undeclared (first use in this function)
mcrypt.c:274: `MCRYPT_BLOWFISH_192' undeclared (first use in this function)
mcrypt.c:275: `MCRYPT_BLOWFISH_256' undeclared (first use in this function)
mcrypt.c:276: warning: passing arg 3 of `zend_register_long_constant' makes integer from pointer without a cast
mcrypt.c:277: warning: passing arg 3 of `zend_register_long_constant' makes integer from pointer without a cast
mcrypt.c:278: warning: passing arg 3 of `zend_register_long_constant' makes integer from pointer without a cast
mcrypt.c:279: `MCRYPT_SERPENT_128' undeclared (first use in this function)
mcrypt.c:280: `MCRYPT_SERPENT_192' undeclared (first use in this function)
mcrypt.c:281: `MCRYPT_SERPENT_256' undeclared (first use in this function)
mcrypt.c:282: warning: passing arg 3 of `zend_register_long_constant' makes integer from pointer without a cast
mcrypt.c:283: warning: passing arg 3 of `zend_register_long_constant' makes integer from pointer without a cast
mcrypt.c:284: warning: passing arg 3 of `zend_register_long_constant' makes integer from pointer without a cast
mcrypt.c:285: `MCRYPT_RC2_256' undeclared (first use in this function)
mcrypt.c:286: `MCRYPT_RC2_128' undeclared (first use in this function)
mcrypt.c:287: `MCRYPT_RC6_256' undeclared (first use in this function)
mcrypt.c:288: `MCRYPT_IDEA' undeclared (first use in this function)
mcrypt.c:289: `MCRYPT_RC6_128' undeclared (first use in this function)
mcrypt.c:290: `MCRYPT_RC6_192' undeclared (first use in this function)
mcrypt.c:291: `MCRYPT_RC4' undeclared (first use in this function)

The command issued:

LDFLAGS="-s" CFLAGS="-O2" ./configure --with-mysql --with-apxs \
                                      --with-pcre --with-dom --with-mcrypt=/usr/local/lib \
                                      --disable-debug --with-imap \
                                      --with-xml

I compiled libmcrypt-2.4.4 with --disable-posix-threads. To correct the issue, I commented out the entire #if ... #endif pair. However, when trying to start Apache, module libmcrypt.so.4 could not be loaded. I check the /etc/ld.so.conf file and added the path for /usr/local/lib. I then issued ldconfig -v. The module was found but contained an error to an undefined reference: lt_dlerror and would not run. Any ideas?