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kc3-lang/libevent/m4/ax_prog_doxygen.m4

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  • Author : Azat Khuzhin
    Date : 2020-08-06 10:24:55
    Hash : 7e6c5fb4
    Message : build: do not try install doxygen man pages if they were not requested Fixes: #1075

  • m4/ax_prog_doxygen.m4
  • # ===========================================================================
    #     https://www.gnu.org/software/autoconf-archive/ax_prog_doxygen.html
    # ===========================================================================
    #
    # SYNOPSIS
    #
    #   DX_INIT_DOXYGEN(PROJECT-NAME, [DOXYFILE-PATH], [OUTPUT-DIR], ...)
    #   DX_DOXYGEN_FEATURE(ON|OFF)
    #   DX_DOT_FEATURE(ON|OFF)
    #   DX_HTML_FEATURE(ON|OFF)
    #   DX_CHM_FEATURE(ON|OFF)
    #   DX_CHI_FEATURE(ON|OFF)
    #   DX_MAN_FEATURE(ON|OFF)
    #   DX_RTF_FEATURE(ON|OFF)
    #   DX_XML_FEATURE(ON|OFF)
    #   DX_PDF_FEATURE(ON|OFF)
    #   DX_PS_FEATURE(ON|OFF)
    #
    # DESCRIPTION
    #
    #   The DX_*_FEATURE macros control the default setting for the given
    #   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 separate .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 macros mainly control 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 '$(srcdir)/Doxyfile', the same as Doxygen's default), and an
    #   optional output directory name (the default is 'doxygen-doc'). To run
    #   doxygen multiple times for different configuration files and output
    #   directories provide more parameters: the second, forth, sixth, etc
    #   parameter are configuration file names and the third, fifth, seventh,
    #   etc parameter are output directories. No checking is done to catch
    #   duplicates.
    #
    #   Automake Support
    #
    #   The DX_RULES substitution can be used to add all needed rules to the
    #   Makefile. Note that this is a substitution without being a variable:
    #   only the @DX_RULES@ syntax will work.
    #
    #   The provided targets are:
    #
    #     doxygen-doc: Generate all doxygen documentation.
    #
    #     doxygen-run: Run doxygen, which will generate some of the
    #                  documentation (HTML, CHM, CHI, MAN, RTF, XML)
    #                  but will not do the post processing required
    #                  for the rest of it (PS, PDF).
    #
    #     doxygen-ps:  Generate doxygen PostScript documentation.
    #
    #     doxygen-pdf: Generate doxygen PDF documentation.
    #
    #   Note that by default these are not integrated into the automake targets.
    #   If doxygen is used to generate man pages, you can achieve this
    #   integration by setting man3_MANS to the list of man pages generated and
    #   then adding the dependency:
    #
    #     $(man3_MANS): doxygen-doc
    #
    #   This will cause make to run doxygen and generate all the documentation.
    #
    #   The following variable is intended for use in Makefile.am:
    #
    #     DX_CLEANFILES = everything to clean.
    #
    #   Then add this variable to MOSTLYCLEANFILES.
    #
    # LICENSE
    #
    #   Copyright (c) 2009 Oren Ben-Kiki <oren@ben-kiki.org>
    #   Copyright (c) 2015 Olaf Mandel <olaf@mandel.name>
    #
    #   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. This file is offered as-is, without any
    #   warranty.
    
    #serial 24
    
    ## ----------##
    ## Defaults. ##
    ## ----------##
    
    DX_ENV=""
    AC_DEFUN([DX_FEATURE_doc],  OFF)
    AC_DEFUN([DX_FEATURE_dot],  OFF)
    AC_DEFUN([DX_FEATURE_man],  OFF)
    AC_DEFUN([DX_FEATURE_html], ON)
    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],  ON)
    AC_DEFUN([DX_FEATURE_ps],   ON)
    
    ## --------------- ##
    ## Private macros. ##
    ## --------------- ##
    
    # DX_ENV_APPEND(VARIABLE, VALUE)
    # ------------------------------
    # Append VARIABLE="VALUE" to DX_ENV for invoking doxygen and add it
    # as a substitution (but not a Makefile variable). The substitution
    # is skipped if the variable name is VERSION.
    AC_DEFUN([DX_ENV_APPEND],
    [AC_SUBST([DX_ENV], ["$DX_ENV $1='$2'"])dnl
    m4_if([$1], [VERSION], [], [AC_SUBST([$1], [$2])dnl
    AM_SUBST_NOTMAKE([$1])])dnl
    ])
    
    # 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
        if test "x$2" = "xdoxygen"; then
            AC_MSG_ERROR([$2 not found - will not DX_CURRENT_DESCRIPTION])
        else
            AC_MSG_WARN([$2 not found - will not DX_CURRENT_DESCRIPTION])
        fi
        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-$1])
    ])
    
    # 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
        $6
        :
    else
        $7
        :
    fi
    ])
    
    ## -------------- ##
    ## Public macros. ##
    ## -------------- ##
    
    # DX_XXX_FEATURE(DEFAULT_STATE)
    # -----------------------------
    AC_DEFUN([DX_DOXYGEN_FEATURE], [AC_DEFUN([DX_FEATURE_doc],  [$1])])
    AC_DEFUN([DX_DOT_FEATURE],     [AC_DEFUN([DX_FEATURE_dot], [$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 "$(srcdir)/Doxyfile" and OUTPUT-DOC-DIR is
    # "doxygen-doc".
    # More arguments are interpreted as interleaved CONFIG-FILE and
    # OUTPUT-DOC-DIR values.
    AC_DEFUN([DX_INIT_DOXYGEN], [
    
    # Files:
    AC_SUBST([DX_PROJECT], [$1])
    AC_SUBST([DX_CONFIG], ['ifelse([$2], [], [$(srcdir)/Doxyfile], [$2])'])
    AC_SUBST([DX_DOCDIR], ['ifelse([$3], [], [doxygen-doc], [$3])'])
    m4_if(m4_eval(3 < m4_count($@)), 1, [m4_for([DX_i], 4, m4_count($@), 2,
          [AC_SUBST([DX_CONFIG]m4_eval(DX_i[/2]),
                    'm4_default_nblank_quoted(m4_argn(DX_i, $@),
                                              [$(srcdir)/Doxyfile])')])])dnl
    m4_if(m4_eval(3 < m4_count($@)), 1, [m4_for([DX_i], 5, m4_count($@,), 2,
          [AC_SUBST([DX_DOCDIR]m4_eval([(]DX_i[-1)/2]),
                    'm4_default_nblank_quoted(m4_argn(DX_i, $@),
                                              [doxygen-doc])')])])dnl
    m4_define([DX_loop], m4_dquote(m4_if(m4_eval(3 < m4_count($@)), 1,
              [m4_for([DX_i], 4, m4_count($@), 2, [, m4_eval(DX_i[/2])])],
              [])))dnl
    
    # Environment variables used inside doxygen.cfg:
    DX_ENV_APPEND(SRCDIR, $srcdir)
    DX_ENV_APPEND(PROJECT, $DX_PROJECT)
    DX_ENV_APPEND(VERSION, $PACKAGE_VERSION)
    
    # Doxygen itself:
    DX_ARG_ABLE(doc, [generate any doxygen documentation],
                [],
                [],
                [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],
                [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],
                [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],
                [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],
                [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],
                [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)])
    
    # Separate CHI file generation.
    DX_ARG_ABLE(chi, [generate doxygen separate compressed HTML help index file],
                [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],
                [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],
                [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],
                [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
        DX_ENV_APPEND(GENERATE_LATEX, YES)
    else
        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
    
    # Rules:
    AS_IF([[test $DX_FLAG_html -eq 1]],
    [[DX_SNIPPET_html="## ------------------------------- ##
    ## Rules specific for HTML output. ##
    ## ------------------------------- ##
    
    DX_CLEAN_HTML = \$(DX_DOCDIR)/html]dnl
    m4_foreach([DX_i], [m4_shift(DX_loop)], [[\\
                    \$(DX_DOCDIR]DX_i[)/html]])[
    
    "]],
    [[DX_SNIPPET_html=""]])
    AS_IF([[test $DX_FLAG_chi -eq 1]],
    [[DX_SNIPPET_chi="
    DX_CLEAN_CHI = \$(DX_DOCDIR)/\$(PACKAGE).chi]dnl
    m4_foreach([DX_i], [m4_shift(DX_loop)], [[\\
                   \$(DX_DOCDIR]DX_i[)/\$(PACKAGE).chi]])["]],
    [[DX_SNIPPET_chi=""]])
    AS_IF([[test $DX_FLAG_chm -eq 1]],
    [[DX_SNIPPET_chm="## ------------------------------ ##
    ## Rules specific for CHM output. ##
    ## ------------------------------ ##
    
    DX_CLEAN_CHM = \$(DX_DOCDIR)/chm]dnl
    m4_foreach([DX_i], [m4_shift(DX_loop)], [[\\
                   \$(DX_DOCDIR]DX_i[)/chm]])[\
    ${DX_SNIPPET_chi}
    
    "]],
    [[DX_SNIPPET_chm=""]])
    AS_IF([[test $DX_FLAG_man -eq 1]],
    [[DX_SNIPPET_man="## ------------------------------ ##
    ## Rules specific for MAN output. ##
    ## ------------------------------ ##
    
    DX_CLEAN_MAN = \$(DX_DOCDIR)/man]dnl
    m4_foreach([DX_i], [m4_shift(DX_loop)], [[\\
                   \$(DX_DOCDIR]DX_i[)/man]])[
    
    "]],
    [[DX_SNIPPET_man=""]])
    AS_IF([[test $DX_FLAG_rtf -eq 1]],
    [[DX_SNIPPET_rtf="## ------------------------------ ##
    ## Rules specific for RTF output. ##
    ## ------------------------------ ##
    
    DX_CLEAN_RTF = \$(DX_DOCDIR)/rtf]dnl
    m4_foreach([DX_i], [m4_shift(DX_loop)], [[\\
                   \$(DX_DOCDIR]DX_i[)/rtf]])[
    
    "]],
    [[DX_SNIPPET_rtf=""]])
    AS_IF([[test $DX_FLAG_xml -eq 1]],
    [[DX_SNIPPET_xml="## ------------------------------ ##
    ## Rules specific for XML output. ##
    ## ------------------------------ ##
    
    DX_CLEAN_XML = \$(DX_DOCDIR)/xml]dnl
    m4_foreach([DX_i], [m4_shift(DX_loop)], [[\\
                   \$(DX_DOCDIR]DX_i[)/xml]])[
    
    "]],
    [[DX_SNIPPET_xml=""]])
    AS_IF([[test $DX_FLAG_ps -eq 1]],
    [[DX_SNIPPET_ps="## ----------------------------- ##
    ## Rules specific for PS output. ##
    ## ----------------------------- ##
    
    DX_CLEAN_PS = \$(DX_DOCDIR)/\$(PACKAGE).ps]dnl
    m4_foreach([DX_i], [m4_shift(DX_loop)], [[\\
                  \$(DX_DOCDIR]DX_i[)/\$(PACKAGE).ps]])[
    
    DX_PS_GOAL = doxygen-ps
    
    doxygen-ps: \$(DX_CLEAN_PS)
    
    ]m4_foreach([DX_i], [DX_loop],
    [[\$(DX_DOCDIR]DX_i[)/\$(PACKAGE).ps: \$(DX_DOCDIR]DX_i[)/\$(PACKAGE).tag
    	\$(DX_V_LATEX)cd \$(DX_DOCDIR]DX_i[)/latex; \\
    	rm -f *.aux *.toc *.idx *.ind *.ilg *.log *.out; \\
    	\$(DX_LATEX) refman.tex; \\
    	\$(DX_MAKEINDEX) refman.idx; \\
    	\$(DX_LATEX) refman.tex; \\
    	countdown=5; \\
    	while \$(DX_EGREP) 'Rerun (LaTeX|to get cross-references right)' \\
    	                  refman.log > /dev/null 2>&1 \\
    	   && test \$\$countdown -gt 0; do \\
    	    \$(DX_LATEX) refman.tex; \\
                countdown=\`expr \$\$countdown - 1\`; \\
    	done; \\
    	\$(DX_DVIPS) -o ../\$(PACKAGE).ps refman.dvi
    
    ]])["]],
    [[DX_SNIPPET_ps=""]])
    AS_IF([[test $DX_FLAG_pdf -eq 1]],
    [[DX_SNIPPET_pdf="## ------------------------------ ##
    ## Rules specific for PDF output. ##
    ## ------------------------------ ##
    
    DX_CLEAN_PDF = \$(DX_DOCDIR)/\$(PACKAGE).pdf]dnl
    m4_foreach([DX_i], [m4_shift(DX_loop)], [[\\
                   \$(DX_DOCDIR]DX_i[)/\$(PACKAGE).pdf]])[
    
    DX_PDF_GOAL = doxygen-pdf
    
    doxygen-pdf: \$(DX_CLEAN_PDF)
    
    ]m4_foreach([DX_i], [DX_loop],
    [[\$(DX_DOCDIR]DX_i[)/\$(PACKAGE).pdf: \$(DX_DOCDIR]DX_i[)/\$(PACKAGE).tag
    	\$(DX_V_LATEX)cd \$(DX_DOCDIR]DX_i[)/latex; \\
    	rm -f *.aux *.toc *.idx *.ind *.ilg *.log *.out; \\
    	\$(DX_PDFLATEX) refman.tex; \\
    	\$(DX_MAKEINDEX) refman.idx; \\
    	\$(DX_PDFLATEX) refman.tex; \\
    	countdown=5; \\
    	while \$(DX_EGREP) 'Rerun (LaTeX|to get cross-references right)' \\
    	                  refman.log > /dev/null 2>&1 \\
    	   && test \$\$countdown -gt 0; do \\
    	    \$(DX_PDFLATEX) refman.tex; \\
    	    countdown=\`expr \$\$countdown - 1\`; \\
    	done; \\
    	mv refman.pdf ../\$(PACKAGE).pdf
    
    ]])["]],
    [[DX_SNIPPET_pdf=""]])
    AS_IF([[test $DX_FLAG_ps -eq 1 -o $DX_FLAG_pdf -eq 1]],
    [[DX_SNIPPET_latex="## ------------------------------------------------- ##
    ## Rules specific for LaTeX (shared for PS and PDF). ##
    ## ------------------------------------------------- ##
    
    DX_V_LATEX = \$(_DX_v_LATEX_\$(V))
    _DX_v_LATEX_ = \$(_DX_v_LATEX_\$(AM_DEFAULT_VERBOSITY))
    _DX_v_LATEX_0 = @echo \"  LATEX \" \$][@;
    
    DX_CLEAN_LATEX = \$(DX_DOCDIR)/latex]dnl
    m4_foreach([DX_i], [m4_shift(DX_loop)], [[\\
                     \$(DX_DOCDIR]DX_i[)/latex]])[
    
    "]],
    [[DX_SNIPPET_latex=""]])
    
    AS_IF([[test $DX_FLAG_doc -eq 1]],
    [[DX_SNIPPET_doc="## --------------------------------- ##
    ## Format-independent Doxygen rules. ##
    ## --------------------------------- ##
    
    ${DX_SNIPPET_html}\
    ${DX_SNIPPET_chm}\
    ${DX_SNIPPET_man}\
    ${DX_SNIPPET_rtf}\
    ${DX_SNIPPET_xml}\
    ${DX_SNIPPET_ps}\
    ${DX_SNIPPET_pdf}\
    ${DX_SNIPPET_latex}\
    DX_V_DXGEN = \$(_DX_v_DXGEN_\$(V))
    _DX_v_DXGEN_ = \$(_DX_v_DXGEN_\$(AM_DEFAULT_VERBOSITY))
    _DX_v_DXGEN_0 = @echo \"  DXGEN \" \$<;
    
    .PHONY: doxygen-run doxygen-doc \$(DX_PS_GOAL) \$(DX_PDF_GOAL)
    
    .INTERMEDIATE: doxygen-run \$(DX_PS_GOAL) \$(DX_PDF_GOAL)
    
    doxygen-run:]m4_foreach([DX_i], [DX_loop],
                             [[ \$(DX_DOCDIR]DX_i[)/\$(PACKAGE).tag]])[
    
    doxygen-doc: doxygen-run \$(DX_PS_GOAL) \$(DX_PDF_GOAL)
    
    ]m4_foreach([DX_i], [DX_loop],
    [[\$(DX_DOCDIR]DX_i[)/\$(PACKAGE).tag: \$(DX_CONFIG]DX_i[) \$(pkginclude_HEADERS)
    	\$(A""M_V_at)rm -rf \$(DX_DOCDIR]DX_i[)
    	\$(DX_V_DXGEN)\$(DX_ENV) DOCDIR=\$(DX_DOCDIR]DX_i[) \$(DX_DOXYGEN) \$(DX_CONFIG]DX_i[)
    	\$(A""M_V_at)echo Timestamp >\$][@
    
    ]])dnl
    [DX_CLEANFILES = \\]
    m4_foreach([DX_i], [DX_loop],
    [[	\$(DX_DOCDIR]DX_i[)/doxygen_sqlite3.db \\
    	\$(DX_DOCDIR]DX_i[)/\$(PACKAGE).tag \\
    ]])dnl
    [	-r \\
    	\$(DX_CLEAN_HTML) \\
    	\$(DX_CLEAN_CHM) \\
    	\$(DX_CLEAN_CHI) \\
    	\$(DX_CLEAN_MAN) \\
    	\$(DX_CLEAN_RTF) \\
    	\$(DX_CLEAN_XML) \\
    	\$(DX_CLEAN_PS) \\
    	\$(DX_CLEAN_PDF) \\
    	\$(DX_CLEAN_LATEX)
    DX_INSTALL_DOCS = \\
    	\$(DX_CLEAN_HTML) \\
    	\$(DX_CLEAN_CHM) \\
    	\$(DX_CLEAN_CHI) \\
    	\$(DX_CLEAN_MAN) \\
    	\$(DX_CLEAN_RTF) \\
    	\$(DX_CLEAN_XML) \\
    	\$(DX_CLEAN_PS) \\
    	\$(DX_CLEAN_PDF) \\
    	\$(DX_CLEAN_LATEX)
        "]],
    [[DX_SNIPPET_doc=""]])
    AC_SUBST([DX_RULES],
    ["${DX_SNIPPET_doc}"])dnl
    AM_SUBST_NOTMAKE([DX_RULES])
    
    #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
    ])