cd apache_1.13.12/

./configure --prefix=/usr/local/apache

cd ../php4-200003301445/

./configure --with-apache=../apache_1.3.12 --enable-track-vars --disable-magic-quotes --with-mysql=/usr/local/mysql --with-zlib --enable-sysvsem --enable-sysvshm --with-ftp --with-pcre-regex --with-mcrypt --with-xml --with-mcal=../libmcal --with-wddx --disable-debug

make

make install

cd ../apache_1.3.12/

(so far so good, but then:)

./configure --prefix=/usr/local/apache --activate-module=src/modules/php4/libphp4.a

Configuring for Apache, Version 1.3.12
 + using installation path layout: Apache (config.layout)
 + activated php4 module (modules/php4/libphp4.a)
Creating Makefile
Creating Configuration.apaci in src
cd ..; gcc  -DLINUX=2 -I/usr/local/sources/php4-200003301445 -I/usr/local/sources/php4-200003301445/Zend -I/usr/local/sources/php4-200003301445/Zend -I/usr/local/sources/php4-200003301445 -DUSE_EXPAT -I./lib/expat-lite -DNO_DL_NEEDED `./apaci`     -o helpers/dummy helpers/dummy.c   -Wl,-rpath,/usr/local/lib -Wl,-rpath,/usr/local/sources/libmcal -Wl,-rpath,/usr/local/mysql/lib/mysql  -rdynamic -L/usr/local/lib -L/usr/local/sources/libmcal -L/usr/local/mysql/lib/mysql -Lmodules/php4 -L../modules/php4 -L../../modules/php4 -lmodphp4 -L/usr/local/sources/php4-200003301445/ext/pcre/pcrelib -lpcre  -lgdbm     -lpam  -ldl -lz -ldl -lmysqlclient -lmcrypt -lmcal -lttf -lgd -lresolv -lm -lcrypt -lnsl  -lresolv  -lm -lcrypt
/usr/bin/ld: cannot open -lpcre: No such file or directory
collect2: ld returned 1 exit status
make: *** [dummy] Error 1
Creating Makefile in src
 + configured for Linux platform
 + setting C compiler to gcc
 + setting C pre-processor to gcc -E
 + checking for system header files
 + adding selected modules
    o php4_module uses ConfigStart/End
 + checking sizeof various data types
 + doing sanity check on compiler and options
** A test compilation with your Makefile configuration
** failed.  The below error output from the compilation
** test will give you an idea what is failing. Note that
** Apache requires an ANSI C Compiler, such as gcc. 

======== Error Output for sanity check ========
============= End of Error Report =============

 Aborting!