if test -z "$SED"; then
  PHP_OCI8_SED="sed";
else
  PHP_OCI8_SED="$SED";
fi

PHP_OCI8_TAIL1=`echo a | tail -n1 2>/dev/null`
if test "$PHP_OCI8_TAIL1" = "a"; then
    PHP_OCI8_TAIL1="tail -n1"
else
    PHP_OCI8_TAIL1="tail -1"
fi

AC_DEFUN([AC_OCI8_CHECK_LIB_DIR],[
  AC_MSG_CHECKING([ORACLE_HOME library validity])
  if test ! -d "$OCI8_DIR"; then
    AC_MSG_ERROR([${OCI8_DIR} is not a directory])
  fi
  if test -d "$OCI8_DIR/lib" && test ! -d "$OCI8_DIR/lib32"; then
    OCI8_LIB_DIR=lib
  elif test ! -d "$OCI8_DIR/lib" && test -d "$OCI8_DIR/lib32"; then
    OCI8_LIB_DIR=lib32
  elif test -d "$OCI8_DIR/lib" && test -d "$OCI8_DIR/lib32"; then
    OCI8_LIB_DIR=$PHP_OCI8_OH_LIBDIR
  else
    dnl This isn't an ORACLE_HOME. Try heuristic examination of the dir to help
    dnl the user.
    if test -f "$OCI8_DIR/libociei.$SHLIB_SUFFIX_NAME"; then
      AC_MSG_ERROR([Expected an ORACLE_HOME top level directory but ${OCI8_DIR} appears to be an Instant Client directory. Try --with-oci8=instantclient,${OCI8_DIR}])
    else
      AC_MSG_ERROR([Oracle library directory not found in ${OCI8_DIR}])
    fi
  fi
  AC_MSG_RESULT($OCI8_LIB_DIR)
])

AC_DEFUN([AC_OCI8IC_VERSION],[
  AC_MSG_CHECKING([Oracle Instant Client library version compatibility])
  OCI8_LCS_BASE=$PHP_OCI8_INSTANT_CLIENT/libclntsh.$SHLIB_SUFFIX_NAME
  dnl Oracle 10g, 11g etc
  OCI8_LCS=`ls $OCI8_LCS_BASE.*.1 2> /dev/null | $PHP_OCI8_TAIL1`
  OCI8_NNZ=`ls $PHP_OCI8_INSTANT_CLIENT/libnnz*.$SHLIB_SUFFIX_NAME 2> /dev/null | $PHP_OCI8_TAIL1`
  if test -f "$OCI8_NNZ" && test -f "$OCI8_LCS"; then
    if test ! -f "$OCI8_LCS_BASE"; then
      AC_MSG_ERROR([Link from $OCI8_LCS_BASE to $OCI8_LCS_BASE.*.1 not found])
    fi
    OCI8_ORACLE_VERSION=`echo $OCI8_LCS | $PHP_OCI8_SED -e 's/.*\.\(.*\)\.1$/\1.1/'`
  else
    AC_MSG_ERROR([Oracle Instant Client libraries libnnz.$SHLIB_SUFFIX_NAME and libclntsh.$SHLIB_SUFFIX_NAME not found])
  fi
  AC_MSG_RESULT([$OCI8_ORACLE_VERSION])
])

AC_DEFUN([AC_OCI8_ORACLE_VERSION],[
  AC_MSG_CHECKING([Oracle library version compatibility])
  OCI8_LCS_BASE=$OCI8_DIR/$OCI8_LIB_DIR/libclntsh.$SHLIB_SUFFIX_NAME
  dnl Oracle 10g, 11g etc
  OCI8_LCS=`ls $OCI8_LCS_BASE.*.1 2> /dev/null | $PHP_OCI8_TAIL1`
  if test -s "$OCI8_DIR/orainst/unix.rgs"; then
    OCI8_ORACLE_VERSION=`grep '"ocommon"' $OCI8_DIR/orainst/unix.rgs | $PHP_OCI8_SED 's/[ ][ ]*/:/g' | cut -d: -f 6 | cut -c 2-4`
    test -z "$OCI8_ORACLE_VERSION" && OCI8_ORACLE_VERSION=7.3
  elif test -f "$OCI8_LCS"; then
    dnl Oracle 10g, 11g etc. The x.2 version libraries are named x.1 for drop in
    dnl compatibility
    OCI8_ORACLE_VERSION=`echo $OCI8_LCS | $PHP_OCI8_SED -e 's/.*\.\(.*\)\.1$/\1.1/'`
  elif test -f $OCI8_LCS_BASE.9.0; then
    dnl There is no case for Oracle 9.2. Oracle 9.2 libraries have a 9.0 suffix
    dnl for drop-in compatibility with Oracle 9.0
    OCI8_ORACLE_VERSION=9.0
  elif test -f $OCI8_LCS_BASE.8.0; then
    OCI8_ORACLE_VERSION=8.1
  elif test -f $OCI8_LCS_BASE.1.0; then
    OCI8_ORACLE_VERSION=8.0
  elif test -f $OCI8_DIR/$OCI8_LIB_DIR/libclntsh.a; then
    if test -f $OCI8_DIR/$OCI8_LIB_DIR/libcore4.a; then
      OCI8_ORACLE_VERSION=8.0
    else
      OCI8_ORACLE_VERSION=8.1
    fi
  else
    AC_MSG_ERROR(Oracle libclntsh.$SHLIB_SUFFIX_NAME client library not found)
  fi
  AC_MSG_RESULT($OCI8_ORACLE_VERSION)
])

dnl
dnl OCI8_INIT_DTRACE(providerdesc, header-file, sources)
dnl This mimics PHP_INIT_DTRACE from build/php.m4. It is necessarily different
dnl from PHP_INIT_DTRACE which doesn't currently support DTrace for extensions.
dnl Creating OCI8_INIT_DTRACE independently instead of using a refactored
dnl PHP_INIT_DTRACE allows OCI8 to be DTraced on versions of PHP where core PHP
dnl DTrace support isn't available.
dnl
AC_DEFUN([OCI8_INIT_DTRACE],[
  ac_srcdir=[]PHP_EXT_SRCDIR([oci8])/
  ac_bdir=[]PHP_EXT_BUILDDIR([oci8])/

dnl providerdesc
  ac_provsrc=$1

dnl header-file
  ac_hdrobj=$2

dnl DTrace objects
  old_IFS=[$]IFS
  for ac_src in $3; do
    IFS=.
    set $ac_src
    ac_obj=[$]1
    IFS=$old_IFS

    OCI8_DTRACE_OBJS="[$]OCI8_DTRACE_OBJS [$]ac_bdir[$]ac_obj.lo"
  done;

  for ac_lo in $OCI8_DTRACE_OBJS; do
    dtrace_oci8_objs="[$]dtrace_oci8_objs `echo $ac_lo | $SED -e 's,\.lo$,.o,' -e 's#\(.*\)\/#\1\/.libs\/#'`"
  done;

dnl Generate Makefile.objects entry. The empty $ac_provsrc command stops an
dnl implicit circular dependency in GNU Make which causes the .d file to be
dnl overwritten (Bug 61268).
  cat>>Makefile.objects<<EOF

PHP_EXT_SRCDIR([oci8])/$ac_provsrc:;

$ac_bdir[$]ac_hdrobj: $ac_srcdir[$]ac_provsrc
	CFLAGS="\$(CFLAGS_CLEAN)" dtrace -h -C -s $ac_srcdir[$]ac_provsrc -o \$[]@.bak && \$(SED) -e 's,PHPOCI_,DTRACE_,g' \$[]@.bak > \$[]@

\$(OCI8_DTRACE_OBJS): $ac_bdir[$]ac_hdrobj

EOF

  case $host_alias in
  *solaris*|*linux*)
    dtrace_prov_name="`echo $ac_provsrc | $SED -e 's#\(.*\)\/##'`.o"
    dtrace_lib_dir="`echo $ac_bdir[$]ac_provsrc | $SED -e 's#\(.*\)/[^/]*#\1#'`/.libs"
    dtrace_d_obj="`echo $ac_bdir[$]ac_provsrc | $SED -e 's#\(.*\)/\([^/]*\)#\1/.libs/\2#'`.o"
    dtrace_nolib_objs='$(OCI8_DTRACE_OBJS:.lo=.o)'
    for ac_lo in $OCI8_DTRACE_OBJS; do
      dtrace_oci8_lib_objs="[$]dtrace_oci8_lib_objs `echo $ac_lo | $SED -e 's,\.lo$,.o,' -e 's#\(.*\)\/#\1\/.libs\/#'`"
    done;

    dnl Always attempt to create both PIC and non-PIC DTrace objects (Bug 63692)
    cat>>Makefile.objects<<EOF
$ac_bdir[$]ac_provsrc.lo: \$(OCI8_DTRACE_OBJS)
	echo "[#] Generated by Makefile for libtool" > \$[]@
	@test -d "$dtrace_lib_dir" || mkdir $dtrace_lib_dir
	if CFLAGS="\$(CFLAGS_CLEAN)" dtrace -G -o $dtrace_d_obj -s $ac_srcdir[$]ac_provsrc $dtrace_oci8_lib_objs 2> /dev/null && test -f "$dtrace_d_obj"; then [\\]
	  echo "pic_object=['].libs/$dtrace_prov_name[']" >> \$[]@ [;\\]
	else [\\]
	  echo "pic_object='none'" >> \$[]@ [;\\]
	fi
	if CFLAGS="\$(CFLAGS_CLEAN)" dtrace -G -o $ac_bdir[$]ac_provsrc.o -s $ac_srcdir[$]ac_provsrc $dtrace_nolib_objs 2> /dev/null && test -f "$ac_bdir[$]ac_provsrc.o"; then [\\]
	  echo "non_pic_object=[']$dtrace_prov_name[']" >> \$[]@ [;\\]
	else [\\]
	  echo "non_pic_object='none'" >> \$[]@ [;\\]
	fi

EOF
    ;;
  *)
    AC_MSG_WARN([OCI8 extension: OCI8 DTrace support is not confirmed on this platform])
cat>>Makefile.objects<<EOF
$ac_bdir[$]ac_provsrc.o: \$(OCI8_DTRACE_OBJS)
	CFLAGS="\$(CFLAGS_CLEAN)" dtrace -G -o \$[]@ -s $ac_srcdir[$]ac_provsrc $dtrace_oci8_objs

EOF
    ;;
  esac
])

dnl --with-oci8=shared,instantclient,/path/to/client/dir/lib
dnl or
dnl --with-oci8=shared,/path/to/oracle/home
PHP_ARG_WITH([oci8],
  [for Oracle Database OCI8 support],
  [AS_HELP_STRING([[--with-oci8[=DIR]]],
    [Include Oracle Database OCI8 support. DIR defaults to $ORACLE_HOME. Use
    --with-oci8=instantclient,/path/to/instant/client/lib to use an Oracle
    Instant Client installation])])

if test "$PHP_OCI8" != "no"; then

  if test -z "$PHP_OCI8"; then
    dnl --with-oci8=$ORACLE_HOME where ORACLE_HOME isn't set (or is mistyped)
    dnl will match this case.
    AC_MSG_ERROR([Empty parameter value passed to --with-oci8])
  fi

  dnl Check PHP version is compatible with this extension.
  AC_MSG_CHECKING([PHP version])

  tmp_version=$PHP_VERSION
  if test -z "$tmp_version"; then
    if test -z "$PHP_CONFIG"; then
      AC_MSG_ERROR([php-config not found])
    fi
    php_version=`$PHP_CONFIG --version 2>/dev/null|head -n 1|$PHP_OCI8_SED -e 's#\([0-9]\.[0-9]*\.[0-9]*\)\(.*\)#\1#'`
  else
    php_version=`echo "$tmp_version"|$PHP_OCI8_SED -e 's#\([0-9]\.[0-9]*\.[0-9]*\)\(.*\)#\1#'`
  fi

  if test -z "$php_version"; then
    AC_MSG_ERROR([failed to detect PHP version, please report])
  fi

  ac_IFS=$IFS
  IFS="."
  set $php_version
  IFS=$ac_IFS
  oci8_php_version=`expr [$]1 \* 1000000 + [$]2 \* 1000 + [$]3`

  if test "$oci8_php_version" -lt "5002000"; then
    AC_MSG_ERROR([You need at least PHP 5.2.0 to be able to use this version of OCI8. PHP $php_version found])
  else
    AC_MSG_RESULT([$php_version, ok])
  fi

  dnl Check whether --enable-dtrace was set. To use DTrace with a PECL install,
  dnl extract the OCI8 archive, phpize it, and set PHP_DTRACE=yes before running
  dnl configure.
  AC_MSG_CHECKING([OCI8 DTrace support])
  oci8_do_dtrace="`echo $PHP_OCI8 | cut -d, -f3`"
  if test "$PHP_DTRACE" = "yes" -o "$oci8_do_dtrace" = "dtrace" ; then
    AC_MSG_RESULT([yes])
    if test "$ext_shared" = "no"; then
      AC_MSG_ERROR([For DTrace support OCI8 must be configured as a shared extension])
    else
      AC_CHECK_HEADERS([sys/sdt.h], [
	 OCI8_INIT_DTRACE([oci8_dtrace.d],[oci8_dtrace_gen.h],[oci8.c oci8_statement.c])

       ], [
	 AC_MSG_ERROR(
	   [Cannot find sys/sdt.h which is required for DTrace support])
       ])
      PHP_SUBST(OCI8_DTRACE_OBJS)
      AC_DEFINE(HAVE_OCI8_DTRACE,1,[Defined to 1 if PHP OCI8 DTrace support was enabled during configuration])
      dnl Developer warning: hard coded extension is OK for the known supported
      dnl environments.
      shared_objects_oci8="$shared_objects_oci8 PHP_EXT_BUILDDIR(oci8)/oci8_dtrace.d.lo"
    fi
  else
    AC_MSG_RESULT([no])
  fi

  dnl Set some port specific directory components for use later.
  AC_CHECK_SIZEOF([long])
  AC_MSG_CHECKING([if we're at 64-bit platform])
  AS_IF([test "$ac_cv_sizeof_long" -eq 4],[
    AC_MSG_RESULT([no])
    PHP_OCI8_OH_LIBDIR=lib32
    PHP_OCI8_IC_LIBDIR_SUFFIX=""
  ],[
    AC_MSG_RESULT([yes])
    PHP_OCI8_OH_LIBDIR=lib
    PHP_OCI8_IC_LIBDIR_SUFFIX=64
  ])

  dnl Determine if the user wants to use Oracle Instant Client libraries.

  PHP_OCI8_INSTANT_CLIENT="no"

  dnl PECL Bug 14268 (Allow "pecl install oci8" command to "autodetect" an
  dnl Instant Client RPM install).  This also has a benefit for non
  dnl "pecl install" builds: if the user does --with-oci8 or --with-oci8=shared
  dnl but the ORACLE_HOME environment variable is not actually set, the install
  dnl tries to locate the Instant Client RPM.
  if test "$PHP_OCI8" = "yes" && test -z "$ORACLE_HOME"; then
    AC_MSG_WARN([OCI8 extension: ORACLE_HOME is not set, looking for default Oracle Instant Client instead])
    PHP_OCI8=instantclient
  fi

  if test "`echo $PHP_OCI8`" = "instantclient"; then
    PHP_OCI8_INSTANT_CLIENT="yes"
  elif test "`echo $PHP_OCI8 | cut -d, -f2`" = "instantclient"; then
    PHP_OCI8_INSTANT_CLIENT="`echo $PHP_OCI8 | cut -d, -f3`"
    PHP_OCI8="`echo $PHP_OCI8 | cut -d, -f1,4`"
    if test "$PHP_OCI8_INSTANT_CLIENT" = ""; then
	PHP_OCI8_INSTANT_CLIENT="yes"
    fi
    if test -z "$PHP_OCI8"; then
	PHP_OCI8=yes
    fi
  elif test "`echo $PHP_OCI8 | cut -d, -f1`" = "instantclient"; then
    PHP_OCI8_INSTANT_CLIENT="`echo $PHP_OCI8 | cut -d, -f2`"
    PHP_OCI8="`echo $PHP_OCI8 | cut -d, -f3,4`"
    if test "$PHP_OCI8_INSTANT_CLIENT" = ""; then
	PHP_OCI8_INSTANT_CLIENT="yes"
    fi
    if test -z "$PHP_OCI8"; then
	PHP_OCI8=yes
    fi
  fi

  if test "$PHP_OCI8_INSTANT_CLIENT" = "no"; then
    dnl ***************************************
    dnl Branch for using an ORACLE_HOME install
    dnl ***************************************

    AC_MSG_CHECKING([Oracle ORACLE_HOME install directory])

    if test "$PHP_OCI8" = "yes"; then
      OCI8_DIR=$ORACLE_HOME
    else
      OCI8_DIR=$PHP_OCI8
    fi
    AC_MSG_RESULT($OCI8_DIR)

    AC_OCI8_CHECK_LIB_DIR($OCI8_DIR)

    if test -d "$OCI8_DIR/rdbms/public"; then
      PHP_ADD_INCLUDE($OCI8_DIR/rdbms/public)
      OCI8_INCLUDES="$OCI8_INCLUDES -I$OCI8_DIR/rdbms/public"
    fi
    if test -d "$OCI8_DIR/rdbms/demo"; then
      PHP_ADD_INCLUDE($OCI8_DIR/rdbms/demo)
      OCI8_INCLUDES="$OCI8_INCLUDES -I$OCI8_DIR/rdbms/demo"
    fi
    if test -d "$OCI8_DIR/network/public"; then
      PHP_ADD_INCLUDE($OCI8_DIR/network/public)
      OCI8_INCLUDES="$OCI8_INCLUDES -I$OCI8_DIR/network/public"
    fi
    if test -d "$OCI8_DIR/plsql/public"; then
      PHP_ADD_INCLUDE($OCI8_DIR/plsql/public)
      OCI8_INCLUDES="$OCI8_INCLUDES -I$OCI8_DIR/plsql/public"
    fi

    if test -f "$OCI8_DIR/$OCI8_LIB_DIR/sysliblist"; then
      PHP_EVAL_LIBLINE(`cat $OCI8_DIR/$OCI8_LIB_DIR/sysliblist`, OCI8_SYSLIB)
    elif test -f "$OCI8_DIR/rdbms/$OCI8_LIB_DIR/sysliblist"; then
      PHP_EVAL_LIBLINE(`cat $OCI8_DIR/rdbms/$OCI8_LIB_DIR/sysliblist`, OCI8_SYSLIB)
    fi

    AC_OCI8_ORACLE_VERSION($OCI8_DIR)

    case $OCI8_ORACLE_VERSION in
      7.3|8.0|8.1|9.0)
	AC_MSG_ERROR([Oracle client libraries < 10 are not supported])
	;;
    esac

    PHP_ADD_LIBRARY(clntsh, 1, OCI8_SHARED_LIBADD)
    PHP_ADD_LIBPATH($OCI8_DIR/$OCI8_LIB_DIR, OCI8_SHARED_LIBADD)
    PHP_NEW_EXTENSION(oci8, oci8.c oci8_lob.c oci8_statement.c oci8_collection.c oci8_interface.c oci8_failover.c, $ext_shared)
    AC_DEFINE(HAVE_OCI8,1,[Defined to 1 if the PHP OCI8 extension for Oracle Database is configured])

    PHP_SUBST_OLD(OCI8_SHARED_LIBADD)
    PHP_SUBST_OLD(OCI8_DIR)
    PHP_SUBST_OLD(OCI8_ORACLE_VERSION)

    dnl Fix Bug #46623
    AC_DEFINE_UNQUOTED(PHP_OCI8_DEF_DIR, "$OCI8_DIR", [ ])
    AC_DEFINE_UNQUOTED(PHP_OCI8_DEF_SHARED_LIBADD, "$OCI8_SHARED_LIBADD", [ ])

  else
    dnl ***************************************************
    dnl Branch for using an Oracle Instant Client directory
    dnl ***************************************************

    AC_MSG_CHECKING([Oracle Instant Client directory])

    if test "$PHP_OCI8_INSTANT_CLIENT" = "yes"; then
      dnl Find the directory if user specified "instantclient" but did not give
      dnl a dir. Generally the Instant Client can be anywhere so the user must
      dnl pass in the library directory.  But on Linux we default to the most
      dnl recent version in /usr/lib which is where the Oracle Instant Client
      dnl RPM gets installed.
      PHP_OCI8_INSTANT_CLIENT=`ls -d /usr/lib/oracle/*/client${PHP_OCI8_IC_LIBDIR_SUFFIX}/lib/libclntsh.* 2> /dev/null | $PHP_OCI8_TAIL1 | $PHP_OCI8_SED -e 's#/libclntsh[^/]*##'`
      if test -z "$PHP_OCI8_INSTANT_CLIENT"; then
	AC_MSG_ERROR([Oracle Instant Client directory /usr/lib/oracle/.../client${PHP_OCI8_IC_LIBDIR_SUFFIX}/lib libraries not found. Try --with-oci8=instantclient,DIR])
      fi
    fi
    AC_MSG_RESULT($PHP_OCI8_INSTANT_CLIENT)

    OCI8_DIR=$PHP_OCI8_INSTANT_CLIENT

    AC_MSG_CHECKING([Oracle Instant Client SDK header directory])

    dnl Header directory for Instant Client SDK RPM install
    OCISDKRPMINC=`echo "$PHP_OCI8_INSTANT_CLIENT" | $PHP_OCI8_SED -e 's!^/usr/lib/oracle/\(.*\)/client\('${PHP_OCI8_IC_LIBDIR_SUFFIX}'\)*/lib[/]*$!/usr/include/oracle/\1/client\2!'`

    dnl Header directory for Instant Client SDK zip file install
    OCISDKZIPINC=$PHP_OCI8_INSTANT_CLIENT/sdk/include

    dnl Header directory for manual installation
    OCISDKMANINC=`echo "$PHP_OCI8_INSTANT_CLIENT" | $PHP_OCI8_SED -e 's!\(.*\)/lib[/]*$!\1/include!'`

    if test -f "$OCISDKRPMINC/oci.h"; then
      AC_MSG_RESULT($OCISDKRPMINC)
      PHP_ADD_INCLUDE($OCISDKRPMINC)
      OCI8INCDIR=$OCISDKRPMINC
    elif test -f "$OCISDKZIPINC/oci.h"; then
      AC_MSG_RESULT($OCISDKZIPINC)
      PHP_ADD_INCLUDE($OCISDKZIPINC)
      OCI8INCDIR=$OCISDKZIPINC
    elif test -f "$OCISDKMANINC/oci.h"; then
      AC_MSG_RESULT($OCISDKMANINC)
      PHP_ADD_INCLUDE($OCISDKMANINC)
      OCI8INCDIR=$OCISDKMANINC
    else
      AC_MSG_ERROR([Oracle Instant Client SDK header files not found])
    fi

    OCISYSLIBLIST=`echo "$OCI8INCDIR" | $PHP_OCI8_SED -e 's!\(.*\)/include$!\1/demo/sysliblist!'`
    if test -f "$OCISYSLIBLIST"; then
      PHP_EVAL_LIBLINE(`cat $OCISYSLIBLIST`, OCI8_SYSLIB)
    fi

    AC_OCI8IC_VERSION($PHP_OCI8_INSTANT_CLIENT)
    PHP_ADD_LIBRARY(clntsh, 1, OCI8_SHARED_LIBADD)
    PHP_ADD_LIBPATH($PHP_OCI8_INSTANT_CLIENT, OCI8_SHARED_LIBADD)

    AC_DEFINE(HAVE_OCI_INSTANT_CLIENT,1,[Defined to 1 if OCI8 configuration located Oracle's Instant Client libraries])

    PHP_NEW_EXTENSION(oci8, oci8.c oci8_lob.c oci8_statement.c oci8_collection.c oci8_interface.c oci8_failover.c, $ext_shared)
    AC_DEFINE(HAVE_OCI8,1,[Defined to 1 if the PHP OCI8 extension for Oracle Database is configured])

    PHP_SUBST_OLD(OCI8_SHARED_LIBADD)
    PHP_SUBST_OLD(OCI8_DIR)
    PHP_SUBST_OLD(OCI8_ORACLE_VERSION)

  fi
fi