--- configure.in.orig 2007-01-11 00:51:59.000000000 +0200 +++ configure.in 2007-08-21 09:22:58.000000000 +0200 @@ -1946,7 +1948,7 @@ dnl Default is PHP3, and if ZEND_API is set then we assume that we have PHP4. dnl AC_MSG_CHECKING([whether we have PHP3 or PHP4]) - if test -n "`grep 'ZEND_API' $PHP_CONFIG_H`" ; then + if test -n "`cpp -dD $PHP_CONFIG_H|grep 'ZEND_API'`" ; then PHP_VERSION_FLAG="-DPHP4" else PHP_VERSION_FLAG="-DPHP3"