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275 lines
8.6 KiB
Text
275 lines
8.6 KiB
Text
# ===========================================================================
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# http://www.gnu.org/software/autoconf-archive/ax_lib_expat.html
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# ===========================================================================
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#
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# SYNOPSIS
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#
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# AX_LIB_EXPAT([MINIMUM-VERSION])
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#
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# DESCRIPTION
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#
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# This macro provides tests of availability of Expat XML Parser of
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# particular version or newer. This macro checks for Expat XML Parser
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# headers and libraries and defines compilation flags
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#
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# Macro supports following options and their values:
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#
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# 1) Single-option usage:
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#
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# --with-expat -- yes, no, or path to Expat XML Parser
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# installation prefix
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#
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# 2) Three-options usage (all options are required):
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#
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# --with-expat=yes
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# --with-expat-inc -- path to base directory with Expat headers
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# --with-expat-lib -- linker flags for Expat
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#
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# This macro calls:
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#
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# AC_SUBST(EXPAT_CFLAGS)
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# AC_SUBST(EXPAT_LIBS)
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# AC_SUBST(EXPAT_VERSION) -- only if version requirement is used
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#
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# And sets:
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#
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# HAVE_EXPAT
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#
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# LICENSE
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#
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# Copyright (c) 2008 Mateusz Loskot <mateusz@loskot.net>
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#
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# Copying and distribution of this file, with or without modification, are
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# permitted in any medium without royalty provided the copyright notice
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# and this notice are preserved. This file is offered as-is, without any
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# warranty.
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#serial 9
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AC_DEFUN([AX_LIB_EXPAT],
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[
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AC_ARG_WITH([expat],
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AS_HELP_STRING([--with-expat=@<:@ARG@:>@],
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[use Expat XML Parser from given prefix (ARG=path); check standard prefixes (ARG=yes); disable (ARG=no)]
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),
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[
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if test "$withval" = "yes"; then
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if test -f /usr/local/include/expat.h ; then
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expat_prefix=/usr/local
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elif test -f /usr/include/expat.h ; then
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expat_prefix=/usr
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else
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expat_prefix=""
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fi
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expat_requested="yes"
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elif test -d "$withval"; then
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expat_prefix="$withval"
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expat_requested="yes"
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else
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expat_prefix=""
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expat_requested="no"
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fi
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],
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[
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dnl Default behavior is implicit yes
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if test -f /usr/local/include/expat.h ; then
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expat_prefix=/usr/local
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elif test -f /usr/include/expat.h ; then
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expat_prefix=/usr
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else
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expat_prefix=""
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fi
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]
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)
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AC_ARG_WITH([expat-inc],
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AS_HELP_STRING([--with-expat-inc=@<:@DIR@:>@],
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[path to Expat XML Parser headers]
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),
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[expat_include_dir="$withval"],
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[expat_include_dir=""]
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)
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AC_ARG_WITH([expat-lib],
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AS_HELP_STRING([--with-expat-lib=@<:@ARG@:>@],
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[link options for Expat XML Parser libraries]
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),
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[expat_lib_flags="$withval"],
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[expat_lib_flags=""]
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)
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EXPAT_CFLAGS=""
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EXPAT_LIBS=""
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EXPAT_VERSION=""
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dnl
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dnl Collect include/lib paths and flags
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dnl
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run_expat_test="no"
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if test -n "$expat_prefix"; then
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expat_include_dir="$expat_prefix/include"
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expat_lib_flags="-L$expat_prefix/lib -lexpat"
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run_expat_test="yes"
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elif test "$expat_requested" = "yes"; then
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if test -n "$expat_include_dir" -a -n "$expat_lib_flags"; then
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run_expat_test="yes"
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fi
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else
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run_expat_test="no"
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fi
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dnl
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dnl Check Expat XML Parser files
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dnl
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if test "$run_expat_test" = "yes"; then
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saved_CPPFLAGS="$CPPFLAGS"
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CPPFLAGS="$CPPFLAGS -I$expat_include_dir"
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saved_LDFLAGS="$LDFLAGS"
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LIBS="$LDFLAGS $expat_lib_flags"
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dnl
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dnl Check Expat headers
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dnl
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AC_MSG_CHECKING([for Expat XML Parser headers in $expat_include_dir])
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AC_LANG_PUSH([C++])
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AC_COMPILE_IFELSE([
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AC_LANG_PROGRAM(
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[[
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@%:@include <expat.h>
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]],
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[[]]
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)],
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[
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EXPAT_CFLAGS="-I$expat_include_dir"
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expat_header_found="yes"
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AC_MSG_RESULT([found])
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],
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[
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expat_header_found="no"
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AC_MSG_RESULT([not found])
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]
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)
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AC_LANG_POP([C++])
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dnl
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dnl Check Expat libraries
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dnl
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if test "$expat_header_found" = "yes"; then
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AC_MSG_CHECKING([for Expat XML Parser libraries])
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AC_LANG_PUSH([C++])
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AC_LINK_IFELSE([
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AC_LANG_PROGRAM(
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[[
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@%:@include <expat.h>
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]],
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[[
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XML_Parser p = XML_ParserCreate(NULL);
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XML_ParserFree(p);
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p = NULL;
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]]
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)],
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[
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EXPAT_LIBS="$expat_lib_flags"
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expat_lib_found="yes"
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AC_MSG_RESULT([found])
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],
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[
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expat_lib_found="no"
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AC_MSG_RESULT([not found])
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]
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)
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AC_LANG_POP([C++])
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fi
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CPPFLAGS="$saved_CPPFLAGS"
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LDFLAGS="$saved_LDFLAGS"
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fi
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AC_MSG_CHECKING([for Expat XML Parser])
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if test "$run_expat_test" = "yes"; then
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if test "$expat_header_found" = "yes" -a "$expat_lib_found" = "yes"; then
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AC_SUBST([EXPAT_CFLAGS])
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AC_SUBST([EXPAT_LIBS])
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HAVE_EXPAT="yes"
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else
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HAVE_EXPAT="no"
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fi
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AC_MSG_RESULT([$HAVE_EXPAT])
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dnl
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dnl Check Expat version
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dnl
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if test "$HAVE_EXPAT" = "yes"; then
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expat_version_req=ifelse([$1], [], [], [$1])
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if test -n "$expat_version_req"; then
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AC_MSG_CHECKING([if Expat XML Parser version is >= $expat_version_req])
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if test -f "$expat_include_dir/expat.h"; then
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expat_major=`cat $expat_include_dir/expat.h | \
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grep '^#define.*XML_MAJOR_VERSION.*[0-9]$' | \
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sed -e 's/#define XML_MAJOR_VERSION.//'`
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expat_minor=`cat $expat_include_dir/expat.h | \
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grep '^#define.*XML_MINOR_VERSION.*[0-9]$' | \
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sed -e 's/#define XML_MINOR_VERSION.//'`
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expat_revision=`cat $expat_include_dir/expat.h | \
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grep '^#define.*XML_MICRO_VERSION.*[0-9]$' | \
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sed -e 's/#define XML_MICRO_VERSION.//'`
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EXPAT_VERSION="$expat_major.$expat_minor.$expat_revision"
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AC_SUBST([EXPAT_VERSION])
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dnl Decompose required version string and calculate numerical representation
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expat_version_req_major=`expr $expat_version_req : '\([[0-9]]*\)'`
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expat_version_req_minor=`expr $expat_version_req : '[[0-9]]*\.\([[0-9]]*\)'`
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expat_version_req_revision=`expr $expat_version_req : '[[0-9]]*\.[[0-9]]*\.\([[0-9]]*\)'`
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if test "x$expat_version_req_revision" = "x"; then
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expat_version_req_revision="0"
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fi
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expat_version_req_number=`expr $expat_version_req_major \* 10000 \
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\+ $expat_version_req_minor \* 100 \
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\+ $expat_version_req_revision`
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dnl Calculate numerical representation of detected version
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expat_version_number=`expr $expat_major \* 10000 \
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\+ $expat_minor \* 100 \
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\+ $expat_revision`
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expat_version_check=`expr $expat_version_number \>\= $expat_version_req_number`
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if test "$expat_version_check" = "1"; then
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AC_MSG_RESULT([yes])
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else
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AC_MSG_RESULT([no])
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AC_MSG_WARN([Found Expat XML Parser $EXPAT_VERSION, which is older than required. Possible compilation failure.])
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fi
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else
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AC_MSG_RESULT([no])
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AC_MSG_WARN([Missing expat.h header. Unable to determine Expat version.])
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fi
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fi
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fi
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else
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HAVE_EXPAT="no"
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AC_MSG_RESULT([$HAVE_EXPAT])
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if test "$expat_requested" = "yes"; then
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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])
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fi
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fi
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])
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