[PHP-INSTALL] configure fails while checking for db3 major version

[Carsten P. Gehrke]

I have a problem trying to configure PHP 4.3.4 on a Red Hat Linux v7.0 
system.  The configure command is:

./configure --prefix=/usr --sysconfdir=/etc --localstatedir=/var
  --mandir=/usr/share/man --infodir=/usr/share/info
  --with-config-file-path=/etc --enable-force-cgi-redirect
  --enable-discard-path --with-layout=GNU --enable-safe-mode
  --with-exec-dir=/usr/bin --enable-magic-quotes --disable-rpath
  --enable-versioning --with-openssl --with-zlib --enable-bcmath --with-bz2
  --enable-calendar --enable-dba --with-db3 --enable-dio --enable-ftp
  --with-gd --with-jpeg-dir=/usr --with-png-dir=/usr --with-ttf
  --enable-gd-native-ttf --with-gettext --with-gmp --with-iconv
  --with-imap=shared --with-kerberos=/usr/kerberos --with-imap-ssl
  --with-ldap=shared --with-mysql=shared,/usr --with-ncurses
  --with-unixODBC=shared --with-pspell --with-pgsql=shared --with-readline
  --enable-shmop --with-snmp=shared,/usr --enable-ucd-snmp-hack
  --enable-sockets --with-regex=system --enable-sysvsem --enable-sysvshm
  --enable-wddx --enable-yp --enable-memory-limit
The last few lines before the configure command dies are:

checking whether to enable DBA... yes
checking for GDBM support... no
checking for NDBM support... no
checking for Berkeley DB4 support... no
checking for db3 major version... configure: error: Header contains 
different version

This is from the config.log file:

configure:22414: checking whether to enable DBA
configure:22740: checking for GDBM support
configure:23045: checking for NDBM support
configure:23344: checking for Berkeley DB4 support
configure:23431: gcc -o conftest -g -O2  -L/lib -ldb-3.1  conftest.c -lbz2
-lz -lssl -lcrypto -lresolv -lm -ldl -lnsl  1>&5
configure:23422:10: empty file name in #include
configure: failed program was:
#line 23420 "configure"
#include "confdefs.h"
#include ""
int main() {
          (void)db_create((DB**)0, (DB_ENV*)0, 0);
; return 0; }
configure:23467: checking for db3 major version
And this is code I found in the configure script itself:

  if test -z "$THIS_LIBS"; then
        echo $ac_n "checking for db3 major version""... $ac_c" 1>&6
echo "configure:23467: checking for db3 major version" >&5
    { echo "configure: error: Header contains different version" 1>&2; exit
1; }
  fi
Perhaps I am missing something, but this code doesn't make much sense to 
me.  As I interpret it, first a check is done if the variable $THIS_LIBS is 
empty.  If that is the case, then the two messages about checking for db3 
major version are emitted, and then the error message, followed by the exit 
1.  That last part doesn't make much sense to me:  The checking does not 
seem to happen, and the script will exit regardless of the db3 major 
version.  Is this the intention?  Am I missing something, maybe a side 
effect of emitting the $ac_n or $ac_c?  BTW, db3-3.1.14-6 is installed on 
this system, along with db2-2.4.14-4 and db1-1.85-4.

Thanks in advance,
Carsten