Something

checking for an ANSI C99-conforming __func__... yes
configure: creating ./config.status
config.status: creating Makefile
config.status: creating expat_config.h
===>  Building for expat-2.0.0_1
/bin/sh ./libtool --silent --mode=compile cc -I./lib -I. -O2 -fno-strict-aliasing -pipe  -Wall -Wmissing-prototypes -Wstrict-prototypes -fexceptions -DHAVE_EXPAT_CONFIG_H   -o lib/xmlparse.lo -c lib/xmlparse.c
/bin/sh ./libtool --silent --mode=compile cc -I./lib -I. -O2 -fno-strict-aliasing -pipe  -Wall -Wmissing-prototypes -Wstrict-prototypes -fexceptions -DHAVE_EXPAT_CONFIG_H   -o lib/xmltok.lo -c lib/xmltok.c
/bin/sh ./libtool --silent --mode=compile cc -I./lib -I. -O2 -fno-strict-aliasing -pipe  -Wall -Wmissing-prototypes -Wstrict-prototypes -fexceptions -DHAVE_EXPAT_CONFIG_H   -o lib/xmlrole.lo -c lib/xmlrole.c
/bin/sh ./libtool --silent --mode=link cc -I./lib -I. -O2 -fno-strict-aliasing -pipe  -Wall -Wmissing-prototypes -Wstrict-prototypes -fexceptions -DHAVE_EXPAT_CONFIG_H   -no-undefined -version-info 6:0:5 -rpath /usr/local/lib  -o libexpat.la lib/xmlparse.lo lib/xmltok.lo lib/xmlrole.lo
cc -I./lib -I. -O2 -fno-strict-aliasing -pipe  -Wall -Wmissing-prototypes -Wstrict-prototypes -fexceptions -DHAVE_EXPAT_CONFIG_H   -o xmlwf/xmlwf.o -c xmlwf/xmlwf.c
cc -I./lib -I. -O2 -fno-strict-aliasing -pipe  -Wall -Wmissing-prototypes -Wstrict-prototypes -fexceptions -DHAVE_EXPAT_CONFIG_H   -o xmlwf/xmlfile.o -c xmlwf/xmlfile.c
cc -I./lib -I. -O2 -fno-strict-aliasing -pipe  -Wall -Wmissing-prototypes -Wstrict-prototypes -fexceptions -DHAVE_EXPAT_CONFIG_H   -o xmlwf/codepage.o -c xmlwf/codepage.c
cc -I./lib -I. -O2 -fno-strict-aliasing -pipe  -Wall -Wmissing-prototypes -Wstrict-prototypes -fexceptions -DHAVE_EXPAT_CONFIG_H   -o xmlwf/unixfilemap.o -c xmlwf/unixfilemap.c
/bin/sh ./libtool --silent --mode=link cc -I./lib -I. -O2 -fno-strict-aliasing -pipe  -Wall -Wmissing-prototypes -Wstrict-prototypes -fexceptions -DHAVE_EXPAT_CONFIG_H    -o xmlwf/xmlwf xmlwf/xmlwf.o xmlwf/xmlfile.o xmlwf/codepage.o xmlwf/unixfilemap.o libexpat.la
===>  Installing for expat-2.0.0_1
===>   Generating temporary packing list
===>  Checking if textproc/expat2 already installed
===>   expat-2.0.0_1 is already installed
      You may wish to ``make deinstall'' and install this port again
      by ``make reinstall'' to upgrade it properly.
      If you really wish to overwrite the old port of textproc/expat2
      without deleting it first, set the variable "FORCE_PKG_REGISTER"
      in your environment or the "make install" command line.
*** Error code 1

Stop in /usr/ports/textproc/expat2.
*** Error code 1

Stop in /usr/ports/www/apache2.