doc/man/Makefile.am

   1 # SPDX-License-Identifier: LGPL-2.1-only
   2
   3 # Man pages are only built if they are enabled at configure time.
   4 #
   5 # They should always be built before creating a distribution tarball.
   6
   7 # Function which adds the source directory prefix and adds a given suffix:
   8 manaddsuffix = $(addsuffix $(1),$(addprefix $(srcdir)/,$(2)))
   9
  10 # List only the names without the .*.txt extension here:
  11 MAN1_NAMES = \
  12         lttng-gen-tp
  13 MAN3_NAMES = \
  14         lttng-ust \
  15         tracef \
  16         tracelog \
  17         lttng-ust-dl \
  18         lttng-ust-cyg-profile
  19
  20 # Man page aliases (generated from other sources):
  21 MAN3_ALIASES = vtracef.3 vtracelog.3
  22
  23 # troff man pages:
  24 MAN3_TROFF = do_tracepoint.3 tracepoint.3 tracepoint_enabled.3
  25
  26 # AsciiDoc sources and outputs:
  27 MAN1_TXT = $(call manaddsuffix,.1.txt,$(MAN1_NAMES))
  28 MAN3_TXT = $(call manaddsuffix,.3.txt,$(MAN3_NAMES))
  29 MAN_TXT = $(MAN1_TXT) $(MAN3_TXT) $(MAN8_TXT)
  30 MAN_XML = $(patsubst $(srcdir)/%.txt,%.xml,$(MAN_TXT))
  31
  32 # Common AsciiDoc source files:
  33 COMMON_TXT = \
  34         $(srcdir)/common-footer.txt \
  35         $(srcdir)/common-authors.txt \
  36         $(srcdir)/common-copyrights.txt \
  37         $(srcdir)/log-levels.txt \
  38         $(srcdir)/tracef-tracelog-limitations.txt
  39
  40 # AsciiDoc configuration and XSL files:
  41 ASCIIDOC_CONF = $(srcdir)/asciidoc.conf
  42 XSL_FILE = $(srcdir)/manpage.xsl
  43
  44 # Common dependencies:
  45 COMMON_DEPS = $(ASCIIDOC_CONF) $(COMMON_TXT)
  46
  47 # Man pages destinations:
  48 MAN1 = $(addsuffix .1,$(MAN1_NAMES))
  49 MAN3 = $(addsuffix .3,$(MAN3_NAMES)) $(MAN3_ALIASES)
  50 MAN = $(MAN1) $(MAN3)
  51
  52 if ENABLE_MAN_PAGES
  53 # At this point, we know the user asked to build the man pages.
  54 if HAVE_ASCIIDOC_XMLTO
  55
  56 asciidoc_verbose = $(asciidoc_verbose_@AM_V@)
  57 asciidoc_verbose_ = $(asciidoc_verbose_@AM_DEFAULT_V@)
  58 asciidoc_verbose_0 = @echo "  ASCIIDOC  " $@;
  59
  60 xmlto_verbose = $(xmlto_verbose_@AM_V@)
  61 xmlto_verbose_ = $(xmlto_verbose_@AM_DEFAULT_V@)
  62 xmlto_verbose_0 = @echo "  XMLTO     " $@;
  63
  64 # Tools to execute:
  65 ADOC = $(asciidoc_verbose)$(ASCIIDOC) -f $(ASCIIDOC_CONF) -d manpage \
  66         -a mansource="LTTng" \
  67         -a manmanual="LTTng Manual" \
  68         -a manversion="$(PACKAGE_VERSION)"
  69
  70 ADOC_DOCBOOK = $(ADOC) -b docbook
  71 XTO = $(xmlto_verbose)$(XMLTO) -m $(XSL_FILE) man
  72
  73 # Recipes:
  74 %.1.xml: $(srcdir)/%.1.txt $(COMMON_DEPS)
  75         $(ADOC_DOCBOOK) -o $@ $<
  76
  77 %.1: %.1.xml $(XSL_FILE)
  78         $(XTO) $< 2>/dev/null
  79
  80 %.3.xml: $(srcdir)/%.3.txt $(COMMON_DEPS)
  81         $(ADOC_DOCBOOK) -o $@ $<
  82
  83 # These pair of files are generated by a single invocation of xmlto, use an
  84 # empty rule that depends on a fake intermediate file to track the dependencies
  85 # without resorting to Group Targets which were only introduced in GNU Make 4.3.
  86 tracef.3 vtracef.3: tracef.3.alias
  87         @# Empty recipe to mark tracef.3 and vtracef.3 as rebuilt
  88
  89 tracelog.3 vtracelog.3: tracelog.3.alias
  90         @# Empty recipe to mark tracelog.3 and vtracelog.3 as rebuilt
  91
  92 .INTERMEDIATE: tracef.3.alias tracelog.3.alias
  93
  94 tracef.3.alias: tracef.3.xml $(XSL_FILE)
  95         $(XTO) $< 2>/dev/null
  96
  97 tracelog.3.alias: tracelog.3.xml $(XSL_FILE)
  98         $(XTO) $< 2>/dev/null
  99
 100 %.3: %.3.xml $(XSL_FILE)
 101         $(XTO) $< 2>/dev/null
 102
 103 # Only clean the generated files if we have the tools to generate them again.
 104 CLEANFILES = $(MAN_XML) $(MAN)
 105 else # HAVE_ASCIIDOC_XMLTO
 106 # Create man page targets used to stop the build if we want to
 107 # build the man pages, but we don't have the necessary tools to do so.
 108 ERR_MSG = "Error: Cannot build target because asciidoc or xmlto tool is missing."
 109 ERR_MSG += "Make sure both tools are installed and run the configure script again."
 110
 111 %.1: $(srcdir)/%.1.txt $(COMMON_DEPS)
 112         @echo $(ERR_MSG)
 113         @false
 114
 115 %.3: $(srcdir)/%.3.txt $(COMMON_DEPS)
 116         @echo $(ERR_MSG)
 117         @false
 118 endif # HAVE_ASCIIDOC_XMLTO
 119 endif # ENABLE_MAN_PAGES
 120
 121 # Start with empty distributed/installed man pages:
 122 dist_man1_MANS =
 123 dist_man3_MANS =
 124 EXTRA_DIST =
 125
 126 if ENABLE_MAN_PAGES
 127 # Building man pages: we can install and distribute them.
 128 dist_man1_MANS += $(MAN1)
 129 dist_man3_MANS += $(MAN3) $(MAN3_TROFF)
 130 else # ENABLE_MAN_PAGES
 131 # Those are not known by automake yet because dist_man3_MANS is empty
 132 # at this point, so make sure they are distributed.
 133 EXTRA_DIST += $(MAN3_TROFF)
 134 endif # ENABLE_MAN_PAGES
 135
 136 if !ENABLE_MAN_PAGES
 137 dist-hook:
 138         @echo "Error: Please enable the man pages before creating a distribution tarball."
 139         @false
 140 endif # !ENABLE_MAN_PAGES
 141
 142 # Always distribute the source files.
 143 EXTRA_DIST += $(MAN_TXT) $(COMMON_TXT) $(XSL_FILE) $(ASCIIDOC_CONF) README.md