I have just downloaded the latest libmcal v0.7 and libmcal drivers v0.9 and was trying to install them with php.

No errors occured until I was going to ./configure apache.

Using php4-STABLE-200303301630.

---- Preparing libmcal ----

tar zxfv mcaldrivers-0.9.tar.gz
tar zxfv libmcal-0.7.tar.gz

cd mcal-drivers
mv * ../libmcal
cd ../libmcal/mstore
make

cd ../icap
make

cd ..
chmod a+x configure
./configure --with-mstore --with-icap
make

mkdir /var/calendar
chmod 1777 /var/calendar

(Without any errors)

---- compiling php-latest-stable ----
./configure \
--with-apache=../apache_1.3.27 \
--with-config-file-path=/etc \
--enable-inline-optimization \
--enable-magic-quotes \
--enable-track-vars \
--with-xml \
--with-dom \
--with-xmlrpc \
--with-mysql=/usr/local/mysql \
--enable-sockets \
--with-ldap \
--with-imap=/usr/local/imap-2002b \
--with-imap-ssl=/usr/local \
--with-mm \
--enable-memory-limit \
--enable-bcmath \
--enable-sigchild \
--with-zlib=/usr \
--with-curl=/usr/local \
--with-dom=/usr/include/libxml2/libxml \
--enable-exif \
--enable-ftp \
--with-gettext=/usr/share \
--with-gd \
--with-ttf \
--with-freetype-dir=/usr/local/include/freetype2/freetype \
--enable-gd-imgstrttf \
--with-png-dir=/usr \
--with-jpeg-dir=/usr \
--with-tiff-lib=/usr \
--with-openssl=/usr/local/ssl \
--with-mcrypt \
--with-mhash \
--with-pspell \
--with-imagick \
--enable-mime-magic

make
make install

(Without any errors)


---- compiling apache ----
SSL_BASE=/usr/local/ssl ./configure \
> --enable-module=ssl \
> --activate-module=src/modules/php4/libphp4.a \
> --activate-module=src/modules/extra/mod_geoip.c \
> --enable-rule=eapi \
> --enable-module=define \
> --enable-module=headers \
> --enable-module=info \
> --enable-module=rewrite \
> --enable-module=unique_id \
> --enable-module=digest \
> --enable-module=expires \
> --enable-module=so \
> --enable-module=usertrack
Configuring for Apache, Version 1.3.27
 + using installation path layout: Apache (config.layout)
 + activated php4 module (modules/php4/libphp4.a)
 + activated geoip module (modules/extra/mod_geoip.c)
Creating Makefile
Creating Configuration.apaci in src
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 rewrite_module uses ConfigStart/End
 + using -lndbm for DBM support
      enabling DBM support for mod_rewrite
    o ssl_module uses ConfigStart/End
      + SSL interface: mod_ssl/2.8.14
      + SSL interface build type: OBJ
      + SSL interface compatibility: enabled
      + SSL interface experimental code: disabled
      + SSL interface conservative code: disabled
      + SSL interface vendor extensions: disabled
      + SSL interface plugin: Built-in SDBM
      + SSL library path: /usr/local/ssl
      + SSL library version: OpenSSL 0.9.7a Feb 19 2003
      + SSL library type: installed package (stand-alone)
    o php4_module uses ConfigStart/End
    o geoip_module uses ConfigStart/End
 + using -L/usr/local/lib -lGeoIP for GeoIP support
 + enabling Extended API (EAPI)
 + using system Expat
 + using -ldl for vendor DSO support
 + 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 ========
cd ..; gcc  -DLINUX=22 -I/usr/include/db1 -DMOD_SSL=208114 -DEAPI `./apaci`   -L/usr/local/ssl/lib  -o helpers/dummy helpers/dummy.c   -Wl,-rpath,/usr/local/ssl/lib -Wl,-rpath,/usr/local/lib -Wl,-rpath,/usr/local/imap-2002b/lib -Wl,-rpath,/usr/src/apache/libmcal -Wl,-rpath,/usr/local/mysql/lib  -rdynamic -L/usr/local/ssl/lib -L/usr/local/lib -L/usr/local/imap-2002b/lib -L/usr/src/apache/libmcal -L/usr/local/mysql/lib -Lmodules/php4 -L../modules/php4 -L../../modules/php4 -lmodphp4    -rdynamic -L/usr/local/ssl/lib -L/usr/local/lib -L/usr/local/imap-2002b/lib -L/usr/src/apache/libmcal -L/usr/local/mysql/lib -lcrypt  -lmcal -lc-client  -lssl -lcrypto -lexpat -lcrypt -lmm -lpspell -lmysqlclient -lmhash -lmcrypt -lltdl -lldap -llber -lcrypt -lpam -lfreetype -lpng -lz -ljpeg -lz -lcurl -lz -lssl -lcrypto -lresolv -lm -ldl -lnsl  -lcurl -lz -lssl -lcrypto -ldl -lz -lxml2 -lz -lm -lcrypt -lcrypt   -lm -lcrypt -lndbm  -lssl -lcrypto -L/usr/local/lib -lGeoIP -lexpat -ldl
/usr/src/apache/libmcal/libmcal.so: undefined reference to `cc_login'
/usr/src/apache/libmcal/libmcal.so: undefined reference to `cc_searched'
/usr/src/apache/libmcal/libmcal.so: undefined reference to `cc_vlog'
/usr/src/apache/libmcal/libmcal.so: undefined reference to `cc_vdlog'
collect2: ld returned 1 exit status
make: *** [dummy] Error 1
============= End of Error Report =============

 Aborting!



When using libmcal 0.6 and libmcal drivers 0.8 with the same configuration as above it works without any problems.