# This file is part of Autoconf.                       -*- Autoconf -*-

# pkg.m4 - Macros to locate and utilise pkg-config.            -*- Autoconf -*-

# 

# Copyright © 2004 Scott James Remnant <scott@netsplit.com>.

#

# This program is free software; you can redistribute it and/or modify

# it under the terms of the GNU General Public License as published by

# the Free Software Foundation; either version 2 of the License, or

# (at your option) any later version.

#

# This program is distributed in the hope that it will be useful, but

# WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

# General Public License for more details.

#

# You should have received a copy of the GNU General Public License

# along with this program; if not, write to the Free Software

# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

#

# As a special exception to the GNU General Public License, if you

# distribute this file as part of a program that contains a

# configuration script generated by Autoconf, you may include it under

# the same distribution terms that you use for the rest of that program.

# PKG_PROG_PKG_CONFIG([MIN-VERSION])

# ----------------------------------

AC_DEFUN([PKG_PROG_PKG_CONFIG],

[m4_pattern_forbid([^_?PKG_[A-Z_]+$])

m4_pattern_allow([^PKG_CONFIG(_PATH)?$])

AC_ARG_VAR([PKG_CONFIG], [path to pkg-config utility])dnl

if test "x$ac_cv_env_PKG_CONFIG_set" != "xset"; then

	AC_PATH_TOOL([PKG_CONFIG], [pkg-config])

fi

if test -n "$PKG_CONFIG"; then

	_pkg_min_version=m4_default([$1], [0.9.0])

	AC_MSG_CHECKING([pkg-config is at least version $_pkg_min_version])

	if $PKG_CONFIG --atleast-pkgconfig-version $_pkg_min_version; then

		AC_MSG_RESULT([yes])

	else

		AC_MSG_RESULT([no])

		PKG_CONFIG=""

	fi

fi[]dnl

])# PKG_PROG_PKG_CONFIG

# PKG_CHECK_EXISTS(MODULES, [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])

#

# Check to see whether a particular set of modules exists.  Similar

# to PKG_CHECK_MODULES(), but does not set variables or print errors.

#

#

# Similar to PKG_CHECK_MODULES, make sure that the first instance of

# this or PKG_CHECK_MODULES is called, or make sure to call

# PKG_CHECK_EXISTS manually

# --------------------------------------------------------------

AC_DEFUN([PKG_CHECK_EXISTS],

[AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl

if test -n "$PKG_CONFIG" && \

    AC_RUN_LOG([$PKG_CONFIG --exists --print-errors "$1"]); then

  m4_ifval([$2], [$2], [:])

m4_ifvaln([$3], [else

  $3])dnl

fi])

# _PKG_CONFIG([VARIABLE], [COMMAND], [MODULES])

# ---------------------------------------------

m4_define([_PKG_CONFIG],

[if test -n "$$1"; then

    pkg_cv_[]$1="$$1"

 elif test -n "$PKG_CONFIG"; then

    PKG_CHECK_EXISTS([$3],

                     [pkg_cv_[]$1=`$PKG_CONFIG --[]$2 "$3" 2>/dev/null`],

		     [pkg_failed=yes])

 else

    pkg_failed=untried

fi[]dnl

])# _PKG_CONFIG

# _PKG_SHORT_ERRORS_SUPPORTED

# -----------------------------

AC_DEFUN([_PKG_SHORT_ERRORS_SUPPORTED],

[AC_REQUIRE([PKG_PROG_PKG_CONFIG])

if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then

        _pkg_short_errors_supported=yes

else

        _pkg_short_errors_supported=no

fi[]dnl

])# _PKG_SHORT_ERRORS_SUPPORTED

# PKG_CHECK_MODULES(VARIABLE-PREFIX, MODULES, [ACTION-IF-FOUND],

# [ACTION-IF-NOT-FOUND])

#

#

# Note that if there is a possibility the first call to

# PKG_CHECK_MODULES might not happen, you should be sure to include an

# explicit call to PKG_PROG_PKG_CONFIG in your configure.ac

#

#

# --------------------------------------------------------------

AC_DEFUN([PKG_CHECK_MODULES],

[AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl

AC_ARG_VAR([$1][_CFLAGS], [C compiler flags for $1, overriding pkg-config])dnl

AC_ARG_VAR([$1][_LIBS], [linker flags for $1, overriding pkg-config])dnl

pkg_failed=no

AC_MSG_CHECKING([for $1])

_PKG_CONFIG([$1][_CFLAGS], [cflags], [$2])

_PKG_CONFIG([$1][_LIBS], [libs], [$2])

m4_define([_PKG_TEXT], [Alternatively, you may set the environment variables $1[]_CFLAGS

and $1[]_LIBS to avoid the need to call pkg-config.

See the pkg-config man page for more details.])

if test $pkg_failed = yes; then

        _PKG_SHORT_ERRORS_SUPPORTED

        if test $_pkg_short_errors_supported = yes; then

	        $1[]_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors "$2" 2>&1`

        else 

	        $1[]_PKG_ERRORS=`$PKG_CONFIG --print-errors "$2" 2>&1`

        fi

	# Put the nasty error message in config.log where it belongs

	echo "$$1[]_PKG_ERRORS" >&AS_MESSAGE_LOG_FD

	ifelse([$4], , [AC_MSG_ERROR(dnl

[Package requirements ($2) were not met:

$$1_PKG_ERRORS

Consider adjusting the PKG_CONFIG_PATH environment variable if you

installed software in a non-standard prefix.

_PKG_TEXT

])],

		[AC_MSG_RESULT([no])

                $4])

elif test $pkg_failed = untried; then

	ifelse([$4], , [AC_MSG_FAILURE(dnl

[The pkg-config script could not be found or is too old.  Make sure it

is in your PATH or set the PKG_CONFIG environment variable to the full

path to pkg-config.

_PKG_TEXT

To get pkg-config, see <http://pkg-config.freedesktop.org/>.])],

		[$4])

else

	$1[]_CFLAGS=$pkg_cv_[]$1[]_CFLAGS

	$1[]_LIBS=$pkg_cv_[]$1[]_LIBS

        AC_MSG_RESULT([yes])

	ifelse([$3], , :, [$3])

fi[]dnl

])# PKG_CHECK_MODULES

# Copyright (C) 2004 Oren Ben-Kiki

# This file is distributed under the same terms as the Autoconf macro files.

# Generate automatic documentation using Doxygen. Works in concert with the

# aminclude.m4 file and a compatible doxygen configuration file. Defines the

# following public macros:

#

# DX_???_FEATURE(ON|OFF) - control the default setting fo a Doxygen feature.

# Supported features are 'DOXYGEN' itself, 'DOT' for generating graphics,

# 'HTML' for plain HTML, 'CHM' for compressed HTML help (for MS users), 'CHI'

# for generating a seperate .chi file by the .chm file, and 'MAN', 'RTF',

# 'XML', 'PDF' and 'PS' for the appropriate output formats. The environment

# variable DOXYGEN_PAPER_SIZE may be specified to override the default 'a4wide'

# paper size.

#

# By default, HTML, PDF and PS documentation is generated as this seems to be

# the most popular and portable combination. MAN pages created by Doxygen are

# usually problematic, though by picking an appropriate subset and doing some

# massaging they might be better than nothing. CHM and RTF are specific for MS

# (note that you can't generate both HTML and CHM at the same time). The XML is

# rather useless unless you apply specialized post-processing to it.

#

# The macro mainly controls the default state of the feature. The use can

# override the default by specifying --enable or --disable. The macros ensure

# that contradictory flags are not given (e.g., --enable-doxygen-html and

# --enable-doxygen-chm, --enable-doxygen-anything with --disable-doxygen, etc.)

# Finally, each feature will be automatically disabled (with a warning) if the

# required programs are missing.

#

# Once all the feature defaults have been specified, call DX_INIT_DOXYGEN with

# the following parameters: a one-word name for the project for use as a

# filename base etc., an optional configuration file name (the default is

# 'Doxyfile', the same as Doxygen's default), and an optional output directory

# name (the default is 'doxygen-doc').

## ----------##

## Defaults. ##

## ----------##

DX_ENV=""

AC_DEFUN([DX_FEATURE_doc],  ON)

AC_DEFUN([DX_FEATURE_dot],  OFF)

AC_DEFUN([DX_FEATURE_man],  OFF)

AC_DEFUN([DX_FEATURE_html], OFF)

AC_DEFUN([DX_FEATURE_chm],  OFF)

AC_DEFUN([DX_FEATURE_chi],  OFF)

AC_DEFUN([DX_FEATURE_rtf],  OFF)

AC_DEFUN([DX_FEATURE_xml],  OFF)

AC_DEFUN([DX_FEATURE_pdf],  OFF)

AC_DEFUN([DX_FEATURE_ps],   OFF)

## --------------- ##

## Private macros. ##

## --------------- ##

# DX_ENV_APPEND(VARIABLE, VALUE)

# ------------------------------

# Append VARIABLE="VALUE" to DX_ENV for invoking doxygen.

AC_DEFUN([DX_ENV_APPEND], [AC_SUBST([DX_ENV], ["$DX_ENV $1='$2'"])])

# DX_DIRNAME_EXPR

# ---------------

# Expand into a shell expression prints the directory part of a path.

AC_DEFUN([DX_DIRNAME_EXPR],

         [[expr ".$1" : '\(\.\)[^/]*$' \| "x$1" : 'x\(.*\)/[^/]*$']])

# DX_IF_FEATURE(FEATURE, IF-ON, IF-OFF)

# -------------------------------------

# Expands according to the M4 (static) status of the feature.

AC_DEFUN([DX_IF_FEATURE], [ifelse(DX_FEATURE_$1, ON, [$2], [$3])])

# DX_REQUIRE_PROG(VARIABLE, PROGRAM)

# ----------------------------------

# Require the specified program to be found for the DX_CURRENT_FEATURE to work.

AC_DEFUN([DX_REQUIRE_PROG], [

AC_PATH_TOOL([$1], [$2])

if test "$DX_FLAG_[]DX_CURRENT_FEATURE$$1" = 1; then

    AC_MSG_WARN([$2 not found - will not DX_CURRENT_DESCRIPTION])

    AC_SUBST([DX_FLAG_]DX_CURRENT_FEATURE, 0)

fi

])

# DX_TEST_FEATURE(FEATURE)

# ------------------------

# Expand to a shell expression testing whether the feature is active.

AC_DEFUN([DX_TEST_FEATURE], [test "$DX_FLAG_$1" = 1])

# DX_CHECK_DEPEND(REQUIRED_FEATURE, REQUIRED_STATE)

# -------------------------------------------------

# Verify that a required features has the right state before trying to turn on

# the DX_CURRENT_FEATURE.

AC_DEFUN([DX_CHECK_DEPEND], [

test "$DX_FLAG_$1" = "$2" \

|| AC_MSG_ERROR([doxygen-DX_CURRENT_FEATURE ifelse([$2], 1,

                            requires, contradicts) doxygen-DX_CURRENT_FEATURE])

])

# DX_CLEAR_DEPEND(FEATURE, REQUIRED_FEATURE, REQUIRED_STATE)

# ----------------------------------------------------------

# Turn off the DX_CURRENT_FEATURE if the required feature is off.

AC_DEFUN([DX_CLEAR_DEPEND], [

test "$DX_FLAG_$1" = "$2" || AC_SUBST([DX_FLAG_]DX_CURRENT_FEATURE, 0)

])

# DX_FEATURE_ARG(FEATURE, DESCRIPTION,

#                CHECK_DEPEND, CLEAR_DEPEND,

#                REQUIRE, DO-IF-ON, DO-IF-OFF)

# --------------------------------------------

# Parse the command-line option controlling a feature. CHECK_DEPEND is called

# if the user explicitly turns the feature on (and invokes DX_CHECK_DEPEND),

# otherwise CLEAR_DEPEND is called to turn off the default state if a required

# feature is disabled (using DX_CLEAR_DEPEND). REQUIRE performs additional

# requirement tests (DX_REQUIRE_PROG). Finally, an automake flag is set and

# DO-IF-ON or DO-IF-OFF are called according to the final state of the feature.

AC_DEFUN([DX_ARG_ABLE], [

    AC_DEFUN([DX_CURRENT_FEATURE], [$1])

    AC_DEFUN([DX_CURRENT_DESCRIPTION], [$2])

    AC_ARG_ENABLE(doxygen-$1,

                  [AS_HELP_STRING(DX_IF_FEATURE([$1], [--disable-doxygen-$1],

                                                      [--enable-doxygen-$1]),

                                  DX_IF_FEATURE([$1], [don't $2], [$2]))],

                  [

case "$enableval" in

#(

y|Y|yes|Yes|YES)

    AC_SUBST([DX_FLAG_$1], 1)

    $3

;; #(

n|N|no|No|NO)

    AC_SUBST([DX_FLAG_$1], 0)

;; #(

*)

    AC_MSG_ERROR([invalid value '$enableval' given to doxygen-$1])

;;

esac

], [

AC_SUBST([DX_FLAG_$1], [DX_IF_FEATURE([$1], 1, 0)])

$4

])

if DX_TEST_FEATURE([$1]); then

    $5

    :

fi

if DX_TEST_FEATURE([$1]); then

    AM_CONDITIONAL(DX_COND_$1, :)

    $6

    :

else

    AM_CONDITIONAL(DX_COND_$1, false)

    $7

    :

fi

])

## -------------- ##

## Public macros. ##

## -------------- ##

# DX_XXX_FEATURE(DEFAULT_STATE)

# -----------------------------

AC_DEFUN([DX_DOXYGEN_FEATURE], [AC_DEFUN([doc],  [$1])])

AC_DEFUN([DX_MAN_FEATURE],     [AC_DEFUN([DX_FEATURE_man],  [$1])])

AC_DEFUN([DX_HTML_FEATURE],    [AC_DEFUN([DX_FEATURE_html], [$1])])

AC_DEFUN([DX_CHM_FEATURE],     [AC_DEFUN([DX_FEATURE_chm],  [$1])])

AC_DEFUN([DX_CHI_FEATURE],     [AC_DEFUN([DX_FEATURE_chi],  [$1])])

AC_DEFUN([DX_RTF_FEATURE],     [AC_DEFUN([DX_FEATURE_rtf],  [$1])])

AC_DEFUN([DX_XML_FEATURE],     [AC_DEFUN([DX_FEATURE_xml],  [$1])])

AC_DEFUN([DX_XML_FEATURE],     [AC_DEFUN([DX_FEATURE_xml],  [$1])])

AC_DEFUN([DX_PDF_FEATURE],     [AC_DEFUN([DX_FEATURE_pdf],  [$1])])

AC_DEFUN([DX_PS_FEATURE],      [AC_DEFUN([DX_FEATURE_ps],   [$1])])

# DX_INIT_DOXYGEN(PROJECT, [CONFIG-FILE], [OUTPUT-DOC-DIR])

# ---------------------------------------------------------

# PROJECT also serves as the base name for the documentation files.

# The default CONFIG-FILE is "Doxyfile" and OUTPUT-DOC-DIR is "doc".

AC_DEFUN([DX_INIT_DOXYGEN], [

# Files:

AC_SUBST([DX_PROJECT], [$1])

AC_SUBST([DX_CONFIG], [ifelse([$2], [], Doxyfile, [$2])])

AC_SUBST([DX_DOCDIR], [ifelse([$3], [], doc, [$3])])

# Environment variables used inside Doxyfile.in:

DX_ENV_APPEND(SRCDIR, $srcdir)

DX_ENV_APPEND(PROJECT, $DX_PROJECT)

DX_ENV_APPEND(DOCDIR, $DX_DOCDIR)

DX_ENV_APPEND(VERSION, $PACKAGE_VERSION)

# Doxygen itself:

DX_ARG_ABLE(doc, [generate any doxygen documentation (requires doxygen package)],

            [],

            [],

            [DX_REQUIRE_PROG([DX_DOXYGEN], doxygen)

             DX_REQUIRE_PROG([DX_PERL], perl)],

            [DX_ENV_APPEND(PERL_PATH, $DX_PERL)])

# Dot for graphics:

DX_ARG_ABLE(dot, [generate graphics for doxygen documentation (requires doxygen package)],

            [DX_CHECK_DEPEND(doc, 1)],

            [DX_CLEAR_DEPEND(doc, 1)],

            [DX_REQUIRE_PROG([DX_DOT], dot)],

            [DX_ENV_APPEND(HAVE_DOT, YES)

             DX_ENV_APPEND(DOT_PATH, [`DX_DIRNAME_EXPR($DX_DOT)`])],

            [DX_ENV_APPEND(HAVE_DOT, NO)])

# Man pages generation:

DX_ARG_ABLE(man, [generate doxygen manual pages (requires doxygen package)],

            [DX_CHECK_DEPEND(doc, 1)],

            [DX_CLEAR_DEPEND(doc, 1)],

            [],

            [DX_ENV_APPEND(GENERATE_MAN, YES)],

            [DX_ENV_APPEND(GENERATE_MAN, NO)])

# RTF file generation:

DX_ARG_ABLE(rtf, [generate doxygen RTF documentation (requires doxygen package)],

            [DX_CHECK_DEPEND(doc, 1)],

            [DX_CLEAR_DEPEND(doc, 1)],

            [],

            [DX_ENV_APPEND(GENERATE_RTF, YES)],

            [DX_ENV_APPEND(GENERATE_RTF, NO)])

# XML file generation:

DX_ARG_ABLE(xml, [generate doxygen XML documentation (requires doxygen package)],

            [DX_CHECK_DEPEND(doc, 1)],

            [DX_CLEAR_DEPEND(doc, 1)],

            [],

            [DX_ENV_APPEND(GENERATE_XML, YES)],

            [DX_ENV_APPEND(GENERATE_XML, NO)])

# (Compressed) HTML help generation:

DX_ARG_ABLE(chm, [generate doxygen compressed HTML help documentation (requires doxygen package)],

            [DX_CHECK_DEPEND(doc, 1)],

            [DX_CLEAR_DEPEND(doc, 1)],

            [DX_REQUIRE_PROG([DX_HHC], hhc)],

            [DX_ENV_APPEND(HHC_PATH, $DX_HHC)

             DX_ENV_APPEND(GENERATE_HTML, YES)

             DX_ENV_APPEND(GENERATE_HTMLHELP, YES)],

            [DX_ENV_APPEND(GENERATE_HTMLHELP, NO)])

# Seperate CHI file generation.

DX_ARG_ABLE(chi, [generate doxygen seperate compressed HTML help index file (requires doxygen package)],

            [DX_CHECK_DEPEND(chm, 1)],

            [DX_CLEAR_DEPEND(chm, 1)],

            [],

            [DX_ENV_APPEND(GENERATE_CHI, YES)],

            [DX_ENV_APPEND(GENERATE_CHI, NO)])

# Plain HTML pages generation:

DX_ARG_ABLE(html, [generate doxygen plain HTML documentation (requires doxygen package)],

            [DX_CHECK_DEPEND(doc, 1) DX_CHECK_DEPEND(chm, 0)],

            [DX_CLEAR_DEPEND(doc, 1) DX_CLEAR_DEPEND(chm, 0)],

            [],

            [DX_ENV_APPEND(GENERATE_HTML, YES)],

            [DX_TEST_FEATURE(chm) || DX_ENV_APPEND(GENERATE_HTML, NO)])

# PostScript file generation:

DX_ARG_ABLE(ps, [generate doxygen PostScript documentation (requires doxygen and latex packages)],

            [DX_CHECK_DEPEND(doc, 1)],

            [DX_CLEAR_DEPEND(doc, 1)],

            [DX_REQUIRE_PROG([DX_LATEX], latex)

             DX_REQUIRE_PROG([DX_MAKEINDEX], makeindex)

             DX_REQUIRE_PROG([DX_DVIPS], dvips)

             DX_REQUIRE_PROG([DX_EGREP], egrep)])

# PDF file generation:

DX_ARG_ABLE(pdf, [generate doxygen PDF documentation (requires doxygen and pdflatex packages)],

            [DX_CHECK_DEPEND(doc, 1)],

            [DX_CLEAR_DEPEND(doc, 1)],

            [DX_REQUIRE_PROG([DX_PDFLATEX], pdflatex)

             DX_REQUIRE_PROG([DX_MAKEINDEX], makeindex)

             DX_REQUIRE_PROG([DX_EGREP], egrep)])

# LaTeX generation for PS and/or PDF:

if DX_TEST_FEATURE(ps) || DX_TEST_FEATURE(pdf); then

    AM_CONDITIONAL(DX_COND_latex, :)

    DX_ENV_APPEND(GENERATE_LATEX, YES)

else

    AM_CONDITIONAL(DX_COND_latex, false)

    DX_ENV_APPEND(GENERATE_LATEX, NO)

fi

# Paper size for PS and/or PDF:

AC_ARG_VAR(DOXYGEN_PAPER_SIZE,

           [a4wide (default), a4, letter, legal or executive])

case "$DOXYGEN_PAPER_SIZE" in

#(

"")

    AC_SUBST(DOXYGEN_PAPER_SIZE, "")

;; #(

a4wide|a4|letter|legal|executive)

    DX_ENV_APPEND(PAPER_SIZE, $DOXYGEN_PAPER_SIZE)

;; #(

*)

    AC_MSG_ERROR([unknown DOXYGEN_PAPER_SIZE='$DOXYGEN_PAPER_SIZE'])

;;

esac

#For debugging:

#echo DX_FLAG_doc=$DX_FLAG_doc

#echo DX_FLAG_dot=$DX_FLAG_dot

#echo DX_FLAG_man=$DX_FLAG_man

#echo DX_FLAG_html=$DX_FLAG_html

#echo DX_FLAG_chm=$DX_FLAG_chm

#echo DX_FLAG_chi=$DX_FLAG_chi

#echo DX_FLAG_rtf=$DX_FLAG_rtf

#echo DX_FLAG_xml=$DX_FLAG_xml

#echo DX_FLAG_pdf=$DX_FLAG_pdf

#echo DX_FLAG_ps=$DX_FLAG_ps

#echo DX_ENV=$DX_ENV

])