-# ===========================================================================

-# http://autoconf-archive.cryp.to/ax_lib_expat.html

-# ===========================================================================

-#

-# SYNOPSIS

-#

-# AX_LIB_EXPAT([MINIMUM-VERSION])

-#

-# DESCRIPTION

-#

-# This macro provides tests of availability of Expat XML Parser of

-# particular version or newer. This macro checks for Expat XML Parser

-# headers and libraries and defines compilation flags

-#

-# Macro supports following options and their values:

-#

-# 1) Single-option usage:

-#

-# --with-expat -- yes, no, or path to Expat XML Parser

-# installation prefix

-#

-# 2) Three-options usage (all options are required):

-#

-# --with-expat=yes

-# --with-expat-inc -- path to base directory with Expat headers

-# --with-expat-lib -- linker flags for Expat

-#

-# This macro calls:

-#

-# AC_SUBST(EXPAT_CFLAGS)

-# AC_SUBST(EXPAT_LDFLAGS)

-# AC_SUBST(EXPAT_VERSION) -- only if version requirement is used

-#

-# And sets:

-#

-# HAVE_EXPAT

-#

-# LAST MODIFICATION

-#

-# 2008-04-12

-#

-# COPYLEFT

-#

-# Copyright (c) 2008 Mateusz Loskot <mateusz@loskot.net>

-#

-# Copying and distribution of this file, with or without modification, are

-# permitted in any medium without royalty provided the copyright notice

-# and this notice are preserved.

-

-AC_DEFUN([AX_LIB_EXPAT],

-[

- AC_ARG_WITH([expat],

- AC_HELP_STRING([--with-expat=@<:@ARG@:>@],

- [use Expat XML Parser from given prefix (ARG=path); check standard prefixes (ARG=yes); disable (ARG=no)]

- ),

- [

- if test "$withval" = "yes"; then

- if test -f /usr/local/include/expat.h ; then

- expat_prefix=/usr/local

- elif test -f /usr/include/expat.h ; then

- expat_prefix=/usr

- else

- expat_prefix=""

- fi

- expat_requested="yes"

- elif test -d "$withval"; then

- expat_prefix="$withval"

- expat_requested="yes"

- else

- expat_prefix=""

- expat_requested="no"

- fi

- ],

- [

- dnl Default behavior is implicit yes

- if test -f /usr/local/include/expat.h ; then

- expat_prefix=/usr/local

- elif test -f /usr/include/expat.h ; then

- expat_prefix=/usr

- else

- expat_prefix=""

- fi

- ]

- )

-

- AC_ARG_WITH([expat-inc],

- AC_HELP_STRING([--with-expat-inc=@<:@DIR@:>@],

- [path to Expat XML Parser headers]

- ),

- [expat_include_dir="$withval"],

- [expat_include_dir=""]

- )

- AC_ARG_WITH([expat-lib],

- AC_HELP_STRING([--with-expat-lib=@<:@ARG@:>@],

- [link options for Expat XML Parser libraries]

- ),

- [expat_lib_flags="$withval"],

- [expat_lib_flags=""]

- )

-

- EXPAT_CFLAGS=""

- EXPAT_LDFLAGS=""

- EXPAT_VERSION=""

-

- dnl

- dnl Collect include/lib paths and flags

- dnl

- run_expat_test="no"

-

- if test -n "$expat_prefix"; then

- expat_include_dir="$expat_prefix/include"

- expat_lib_flags="-L$expat_prefix/lib"

- expat_libs="-lexpat"

- run_expat_test="yes"

- elif test "$expat_requested" = "yes"; then

- if test -n "$expat_include_dir" -a -n "$expat_lib_flags"; then

- run_expat_test="yes"

- fi

- else

- run_expat_test="no"

- fi

-

- dnl

- dnl Check Expat XML Parser files

- dnl

- if test "$run_expat_test" = "yes"; then

-

- saved_CPPFLAGS="$CPPFLAGS"

- CPPFLAGS="$CPPFLAGS -I$expat_include_dir"

-

- saved_LDFLAGS="$LDFLAGS"

- LDFLAGS="$LDFLAGS $expat_lib_flags"

- LIBS="$LIBS $expat_libs"

-

- dnl

- dnl Check Expat headers

- dnl

- AC_MSG_CHECKING([for Expat XML Parser headers in $expat_include_dir])

-

- AC_LANG_PUSH([C++])

- AC_COMPILE_IFELSE([

- AC_LANG_PROGRAM(

- [[

-@%:@include <expat.h>

- ]],

- [[]]

- )],

- [

- EXPAT_CFLAGS="-I$expat_include_dir"

- expat_header_found="yes"

- AC_MSG_RESULT([found])

- ],

- [

- expat_header_found="no"

- AC_MSG_RESULT([not found])

- ]

- )

- AC_LANG_POP([C++])

-

- dnl

- dnl Check Expat libraries

- dnl

- if test "$expat_header_found" = "yes"; then

-

- AC_MSG_CHECKING([for Expat XML Parser libraries])

-

- AC_LANG_PUSH([C++])

- AC_LINK_IFELSE([

- AC_LANG_PROGRAM(

- [[

-@%:@include <expat.h>

- ]],

- [[

-XML_Parser p = XML_ParserCreate(NULL);

-XML_ParserFree(p);

-p = NULL;

- ]]

- )],

- [

- EXPAT_LDFLAGS="$expat_lib_flags"

- EXPAT_LIBS="$expat_libs"

- expat_lib_found="yes"

- AC_MSG_RESULT([found])

- ],

- [

- expat_lib_found="no"

- AC_MSG_RESULT([not found])

- ]

- )

- AC_LANG_POP([C++])

- fi

-

- CPPFLAGS="$saved_CPPFLAGS"

- LDFLAGS="$saved_LDFLAGS"

- fi

-

- AC_MSG_CHECKING([for Expat XML Parser])

-

- if test "$run_expat_test" = "yes"; then

- if test "$expat_header_found" = "yes" -a "$expat_lib_found" = "yes"; then

-

- AC_SUBST([EXPAT_CFLAGS])

- AC_SUBST([EXPAT_LDFLAGS])

-

- HAVE_EXPAT="yes"

- else

- HAVE_EXPAT="no"

- fi

-

- AC_MSG_RESULT([$HAVE_EXPAT])

-

- dnl

- dnl Check Expat version

- dnl

- if test "$HAVE_EXPAT" = "yes"; then

-

- expat_version_req=ifelse([$1], [], [], [$1])

-

- if test -n "$expat_version_req"; then

-

- AC_MSG_CHECKING([if Expat XML Parser version is >= $expat_version_req])

-

- if test -f "$expat_include_dir/expat.h"; then

-

- expat_major=`cat $expat_include_dir/expat.h | \

- grep '^#define.*XML_MAJOR_VERSION.*[0-9]$' | \

- sed -e 's/#define XML_MAJOR_VERSION.//'`

-

- expat_minor=`cat $expat_include_dir/expat.h | \

- grep '^#define.*XML_MINOR_VERSION.*[0-9]$' | \

- sed -e 's/#define XML_MINOR_VERSION.//'`

-

- expat_revision=`cat $expat_include_dir/expat.h | \

- grep '^#define.*XML_MICRO_VERSION.*[0-9]$' | \

- sed -e 's/#define XML_MICRO_VERSION.//'`

-

- EXPAT_VERSION="$expat_major.$expat_minor.$expat_revision"

- AC_SUBST([EXPAT_VERSION])

-

- dnl Decompose required version string and calculate numerical representation

- expat_version_req_major=`expr $expat_version_req : '\([[0-9]]*\)'`

- expat_version_req_minor=`expr $expat_version_req : '[[0-9]]*\.\([[0-9]]*\)'`

- expat_version_req_revision=`expr $expat_version_req : '[[0-9]]*\.[[0-9]]*\.\([[0-9]]*\)'`

- if test "x$expat_version_req_revision" = "x"; then

- expat_version_req_revision="0"

- fi

-

- expat_version_req_number=`expr $expat_version_req_major \* 10000 \

- \+ $expat_version_req_minor \* 100 \

- \+ $expat_version_req_revision`

-

- dnl Calculate numerical representation of detected version

- expat_version_number=`expr $expat_major \* 10000 \

- \+ $expat_minor \* 100 \

- \+ $expat_revision`

-

- expat_version_check=`expr $expat_version_number \>\= $expat_version_req_number`

- if test "$expat_version_check" = "1"; then

- AC_MSG_RESULT([yes])

- else

- AC_MSG_RESULT([no])

- AC_MSG_WARN([Found Expat XML Parser $EXPAT_VERSION, which is older than required. Possible compilation failure.])

- fi

- else

- AC_MSG_RESULT([no])

- AC_MSG_WARN([Missing expat.h header. Unable to determine Expat version.])

- fi

- fi

- fi

-

- else

- HAVE_EXPAT="no"

- AC_MSG_RESULT([$HAVE_EXPAT])

-

- if test "$expat_requested" = "yes"; then

- AC_MSG_WARN([Expat XML Parser support requested but headers or library not found. Specify valid prefix of Expat using --with-expat=@<:@DIR@:>@ or provide include directory and linker flags using --with-expat-inc and --with-expat-lib])

- fi

- fi

-])