build: import gtk-doc support

Remove the need to run `gtkdocize' when building from git; this should
be an operation done by the maintainer when modernizing the gtk-doc
setup (think of e.g. gettextize), no need to do it unconditionally.

This makes it easier for platforms without gtk-doc to build from git.

When trying to build with documentation enabled and gtk-doc isn't
found, we get some nice warnings and errors in the configure report:

    checking for gtk-doc... no
    configure: WARNING:
      You will not be able to create source packages with 'make dist'
      because gtk-doc >= 1.0 is not found.
    checking for gtkdoc-check... no
    checking for gtkdoc-check... no
    checking for gtkdoc-rebase... no
    checking for gtkdoc-mkpdf... no
    checking whether to build gtk-doc documentation... yes
    configure: error:
      You must have gtk-doc >= 1.0 installed to build documentation for
      ModemManager. Please install gtk-doc or disable building the
      documentation by adding '--disable-gtk-doc' to './configure'.

Files generated with gtkdocize (gtk-doc) 1.26.1.

3 files changed, 302 insertions, 2 deletions

diff --git a/.gitignore b/.gitignore
index 3737a42..b1a050d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -32,7 +32,6 @@ m4
 missing
 stamp-h1
 depcomp
-gtk-doc.make
 test-driver
 
 /build-aux/mbim-codegen/*.pyc
diff --git a/autogen.sh b/autogen.sh
index 1b1d9b9..bb85f2a 100755
--- a/autogen.sh
+++ b/autogen.sh
@@ -14,7 +14,6 @@ PKG_NAME=libmbim
 }
 
 (cd $srcdir;
-    gtkdocize || exit 1
     mkdir -p m4
     touch ChangeLog
     autoreconf --force --install --verbose
diff --git a/gtk-doc.make b/gtk-doc.make
new file mode 100644
index 0000000..d2a8b33
--- /dev/null
+++ b/gtk-doc.make
@@ -0,0 +1,302 @@
+# -*- mode: makefile -*-
+
+####################################
+# Everything below here is generic #
+####################################
+
+if GTK_DOC_USE_LIBTOOL
+GTKDOC_CC = $(LIBTOOL) --tag=CC --mode=compile $(CC) $(INCLUDES) $(GTKDOC_DEPS_CFLAGS) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)
+GTKDOC_LD = $(LIBTOOL) --tag=CC --mode=link $(CC) $(GTKDOC_DEPS_LIBS) $(AM_CFLAGS) $(CFLAGS) $(AM_LDFLAGS) $(LDFLAGS)
+GTKDOC_RUN = $(LIBTOOL) --mode=execute
+else
+GTKDOC_CC = $(CC) $(INCLUDES) $(GTKDOC_DEPS_CFLAGS) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)
+GTKDOC_LD = $(CC) $(GTKDOC_DEPS_LIBS) $(AM_CFLAGS) $(CFLAGS) $(AM_LDFLAGS) $(LDFLAGS)
+GTKDOC_RUN =
+endif
+
+# We set GPATH here; this gives us semantics for GNU make
+# which are more like other make's VPATH, when it comes to
+# whether a source that is a target of one rule is then
+# searched for in VPATH/GPATH.
+#
+GPATH = $(srcdir)
+
+TARGET_DIR=$(HTML_DIR)/$(DOC_MODULE)
+
+SETUP_FILES = \
+	$(content_files)		\
+	$(expand_content_files)		\
+	$(DOC_MAIN_SGML_FILE)		\
+	$(DOC_MODULE)-sections.txt	\
+	$(DOC_MODULE)-overrides.txt
+
+EXTRA_DIST = 				\
+	$(HTML_IMAGES)			\
+	$(SETUP_FILES)
+
+DOC_STAMPS=setup-build.stamp scan-build.stamp sgml-build.stamp \
+	html-build.stamp pdf-build.stamp \
+	sgml.stamp html.stamp pdf.stamp
+
+SCANOBJ_FILES = 		 \
+	$(DOC_MODULE).args 	 \
+	$(DOC_MODULE).hierarchy  \
+	$(DOC_MODULE).interfaces \
+	$(DOC_MODULE).prerequisites \
+	$(DOC_MODULE).signals
+
+REPORT_FILES = \
+	$(DOC_MODULE)-undocumented.txt \
+	$(DOC_MODULE)-undeclared.txt \
+	$(DOC_MODULE)-unused.txt
+
+gtkdoc-check.test: Makefile
+	$(AM_V_GEN)echo "#!/bin/sh -e" > $@; \
+		echo "$(GTKDOC_CHECK_PATH) || exit 1" >> $@; \
+		chmod +x $@
+
+CLEANFILES = $(SCANOBJ_FILES) $(REPORT_FILES) $(DOC_STAMPS) gtkdoc-check.test
+
+if GTK_DOC_BUILD_HTML
+HTML_BUILD_STAMP=html-build.stamp
+else
+HTML_BUILD_STAMP=
+endif
+if GTK_DOC_BUILD_PDF
+PDF_BUILD_STAMP=pdf-build.stamp
+else
+PDF_BUILD_STAMP=
+endif
+
+all-gtk-doc: $(HTML_BUILD_STAMP) $(PDF_BUILD_STAMP)
+.PHONY: all-gtk-doc
+
+if ENABLE_GTK_DOC
+all-local: all-gtk-doc
+endif
+
+docs: $(HTML_BUILD_STAMP) $(PDF_BUILD_STAMP)
+
+$(REPORT_FILES): sgml-build.stamp
+
+#### setup ####
+
+GTK_DOC_V_SETUP=$(GTK_DOC_V_SETUP_@AM_V@)
+GTK_DOC_V_SETUP_=$(GTK_DOC_V_SETUP_@AM_DEFAULT_V@)
+GTK_DOC_V_SETUP_0=@echo "  DOC   Preparing build";
+
+setup-build.stamp:
+	-$(GTK_DOC_V_SETUP)if test "$(abs_srcdir)" != "$(abs_builddir)" ; then \
+	  files=`echo $(SETUP_FILES) $(DOC_MODULE).types`; \
+	  if test "x$$files" != "x" ; then \
+	    for file in $$files ; do \
+	      destdir=`dirname $(abs_builddir)/$$file`; \
+	      test -d "$$destdir" || mkdir -p "$$destdir"; \
+	      test -f $(abs_srcdir)/$$file && \
+	        cp -pf $(abs_srcdir)/$$file $(abs_builddir)/$$file || true; \
+	    done; \
+	  fi; \
+	fi
+	$(AM_V_at)touch setup-build.stamp
+
+#### scan ####
+
+GTK_DOC_V_SCAN=$(GTK_DOC_V_SCAN_@AM_V@)
+GTK_DOC_V_SCAN_=$(GTK_DOC_V_SCAN_@AM_DEFAULT_V@)
+GTK_DOC_V_SCAN_0=@echo "  DOC   Scanning header files";
+
+GTK_DOC_V_INTROSPECT=$(GTK_DOC_V_INTROSPECT_@AM_V@)
+GTK_DOC_V_INTROSPECT_=$(GTK_DOC_V_INTROSPECT_@AM_DEFAULT_V@)
+GTK_DOC_V_INTROSPECT_0=@echo "  DOC   Introspecting gobjects";
+
+scan-build.stamp: setup-build.stamp $(HFILE_GLOB) $(CFILE_GLOB)
+	$(GTK_DOC_V_SCAN)_source_dir='' ; \
+	for i in $(DOC_SOURCE_DIR) ; do \
+	  _source_dir="$${_source_dir} --source-dir=$$i" ; \
+	done ; \
+	gtkdoc-scan --module=$(DOC_MODULE) --ignore-headers="$(IGNORE_HFILES)" $${_source_dir} $(SCAN_OPTIONS) $(EXTRA_HFILES)
+	$(GTK_DOC_V_INTROSPECT)if grep -l '^..*$$' $(DOC_MODULE).types > /dev/null 2>&1 ; then \
+	  scanobj_options=""; \
+	  gtkdoc-scangobj 2>&1 --help | grep  >/dev/null "\-\-verbose"; \
+	  if test "$$?" = "0"; then \
+	    if test "x$(V)" = "x1"; then \
+	      scanobj_options="--verbose"; \
+	    fi; \
+	  fi; \
+	  CC="$(GTKDOC_CC)" LD="$(GTKDOC_LD)" RUN="$(GTKDOC_RUN)" CFLAGS="$(GTKDOC_CFLAGS) $(CFLAGS)" LDFLAGS="$(GTKDOC_LIBS) $(LDFLAGS)" \
+	  gtkdoc-scangobj $(SCANGOBJ_OPTIONS) $$scanobj_options --module=$(DOC_MODULE); \
+	else \
+	  for i in $(SCANOBJ_FILES) ; do \
+	    test -f $$i || touch $$i ; \
+	  done \
+	fi
+	$(AM_V_at)touch scan-build.stamp
+
+$(DOC_MODULE)-decl.txt $(SCANOBJ_FILES) $(DOC_MODULE)-sections.txt $(DOC_MODULE)-overrides.txt: scan-build.stamp
+	@true
+
+#### xml ####
+
+GTK_DOC_V_XML=$(GTK_DOC_V_XML_@AM_V@)
+GTK_DOC_V_XML_=$(GTK_DOC_V_XML_@AM_DEFAULT_V@)
+GTK_DOC_V_XML_0=@echo "  DOC   Building XML";
+
+sgml-build.stamp: setup-build.stamp $(DOC_MODULE)-decl.txt $(SCANOBJ_FILES) $(HFILE_GLOB) $(CFILE_GLOB) $(DOC_MODULE)-sections.txt $(DOC_MODULE)-overrides.txt $(expand_content_files) xml/gtkdocentities.ent
+	$(GTK_DOC_V_XML)_source_dir='' ; \
+	for i in $(DOC_SOURCE_DIR) ; do \
+	  _source_dir="$${_source_dir} --source-dir=$$i" ; \
+	done ; \
+	gtkdoc-mkdb --module=$(DOC_MODULE) --output-format=xml --expand-content-files="$(expand_content_files)" --main-sgml-file=$(DOC_MAIN_SGML_FILE) $${_source_dir} $(MKDB_OPTIONS)
+	$(AM_V_at)touch sgml-build.stamp
+
+sgml.stamp: sgml-build.stamp
+	@true
+
+$(DOC_MAIN_SGML_FILE): sgml-build.stamp
+	@true
+
+xml/gtkdocentities.ent: Makefile
+	$(GTK_DOC_V_XML)$(MKDIR_P) $(@D) && ( \
+		echo "<!ENTITY package \"$(PACKAGE)\">"; \
+		echo "<!ENTITY package_bugreport \"$(PACKAGE_BUGREPORT)\">"; \
+		echo "<!ENTITY package_name \"$(PACKAGE_NAME)\">"; \
+		echo "<!ENTITY package_string \"$(PACKAGE_STRING)\">"; \
+		echo "<!ENTITY package_tarname \"$(PACKAGE_TARNAME)\">"; \
+		echo "<!ENTITY package_url \"$(PACKAGE_URL)\">"; \
+		echo "<!ENTITY package_version \"$(PACKAGE_VERSION)\">"; \
+	) > $@
+
+#### html ####
+
+GTK_DOC_V_HTML=$(GTK_DOC_V_HTML_@AM_V@)
+GTK_DOC_V_HTML_=$(GTK_DOC_V_HTML_@AM_DEFAULT_V@)
+GTK_DOC_V_HTML_0=@echo "  DOC   Building HTML";
+
+GTK_DOC_V_XREF=$(GTK_DOC_V_XREF_@AM_V@)
+GTK_DOC_V_XREF_=$(GTK_DOC_V_XREF_@AM_DEFAULT_V@)
+GTK_DOC_V_XREF_0=@echo "  DOC   Fixing cross-references";
+
+html-build.stamp: sgml.stamp $(DOC_MAIN_SGML_FILE) $(content_files) $(expand_content_files)
+	$(GTK_DOC_V_HTML)rm -rf html && mkdir html && \
+	mkhtml_options=""; \
+	gtkdoc-mkhtml 2>&1 --help | grep  >/dev/null "\-\-verbose"; \
+	if test "$$?" = "0"; then \
+	  if test "x$(V)" = "x1"; then \
+	    mkhtml_options="$$mkhtml_options --verbose"; \
+	  fi; \
+	fi; \
+	gtkdoc-mkhtml 2>&1 --help | grep  >/dev/null "\-\-path"; \
+	if test "$$?" = "0"; then \
+	  mkhtml_options="$$mkhtml_options --path=\"$(abs_srcdir)\""; \
+	fi; \
+	cd html && gtkdoc-mkhtml $$mkhtml_options $(MKHTML_OPTIONS) $(DOC_MODULE) ../$(DOC_MAIN_SGML_FILE)
+	-@test "x$(HTML_IMAGES)" = "x" || \
+	for file in $(HTML_IMAGES) ; do \
+	  test -f $(abs_srcdir)/$$file && cp $(abs_srcdir)/$$file $(abs_builddir)/html; \
+	  test -f $(abs_builddir)/$$file && cp $(abs_builddir)/$$file $(abs_builddir)/html; \
+	done;
+	$(GTK_DOC_V_XREF)gtkdoc-fixxref --module=$(DOC_MODULE) --module-dir=html --html-dir=$(HTML_DIR) $(FIXXREF_OPTIONS)
+	$(AM_V_at)touch html-build.stamp
+
+#### pdf ####
+
+GTK_DOC_V_PDF=$(GTK_DOC_V_PDF_@AM_V@)
+GTK_DOC_V_PDF_=$(GTK_DOC_V_PDF_@AM_DEFAULT_V@)
+GTK_DOC_V_PDF_0=@echo "  DOC   Building PDF";
+
+pdf-build.stamp: sgml.stamp $(DOC_MAIN_SGML_FILE) $(content_files) $(expand_content_files)
+	$(GTK_DOC_V_PDF)rm -f $(DOC_MODULE).pdf && \
+	mkpdf_options=""; \
+	gtkdoc-mkpdf 2>&1 --help | grep  >/dev/null "\-\-verbose"; \
+	if test "$$?" = "0"; then \
+	  if test "x$(V)" = "x1"; then \
+	    mkpdf_options="$$mkpdf_options --verbose"; \
+	  fi; \
+	fi; \
+	if test "x$(HTML_IMAGES)" != "x"; then \
+	  for img in $(HTML_IMAGES); do \
+	    part=`dirname $$img`; \
+	    echo $$mkpdf_options | grep >/dev/null "\-\-imgdir=$$part "; \
+	    if test $$? != 0; then \
+	      mkpdf_options="$$mkpdf_options --imgdir=$$part"; \
+	    fi; \
+	  done; \
+	fi; \
+	gtkdoc-mkpdf --path="$(abs_srcdir)" $$mkpdf_options $(DOC_MODULE) $(DOC_MAIN_SGML_FILE) $(MKPDF_OPTIONS)
+	$(AM_V_at)touch pdf-build.stamp
+
+##############
+
+clean-local:
+	@rm -f *~ *.bak
+	@rm -rf .libs
+	@if echo $(SCAN_OPTIONS) | grep -q "\-\-rebuild-types" ; then \
+	  rm -f $(DOC_MODULE).types; \
+	fi
+	@if echo $(SCAN_OPTIONS) | grep -q "\-\-rebuild-sections" ; then \
+	  rm -f $(DOC_MODULE)-sections.txt; \
+	fi
+
+distclean-local:
+	@rm -rf xml html $(REPORT_FILES) $(DOC_MODULE).pdf \
+	    $(DOC_MODULE)-decl-list.txt $(DOC_MODULE)-decl.txt
+	@if test "$(abs_srcdir)" != "$(abs_builddir)" ; then \
+	    rm -f $(SETUP_FILES) $(DOC_MODULE).types; \
+	fi
+
+maintainer-clean-local:
+	@rm -rf xml html
+
+install-data-local:
+	@installfiles=`echo $(builddir)/html/*`; \
+	if test "$$installfiles" = '$(builddir)/html/*'; \
+	then echo 1>&2 'Nothing to install' ; \
+	else \
+	  if test -n "$(DOC_MODULE_VERSION)"; then \
+	    installdir="$(DESTDIR)$(TARGET_DIR)-$(DOC_MODULE_VERSION)"; \
+	  else \
+	    installdir="$(DESTDIR)$(TARGET_DIR)"; \
+	  fi; \
+	  $(mkinstalldirs) $${installdir} ; \
+	  for i in $$installfiles; do \
+	    echo ' $(INSTALL_DATA) '$$i ; \
+	    $(INSTALL_DATA) $$i $${installdir}; \
+	  done; \
+	  if test -n "$(DOC_MODULE_VERSION)"; then \
+	    mv -f $${installdir}/$(DOC_MODULE).devhelp2 \
+	      $${installdir}/$(DOC_MODULE)-$(DOC_MODULE_VERSION).devhelp2; \
+	  fi; \
+	  $(GTKDOC_REBASE) --relative --dest-dir=$(DESTDIR) --html-dir=$${installdir}; \
+	fi
+
+uninstall-local:
+	@if test -n "$(DOC_MODULE_VERSION)"; then \
+	  installdir="$(DESTDIR)$(TARGET_DIR)-$(DOC_MODULE_VERSION)"; \
+	else \
+	  installdir="$(DESTDIR)$(TARGET_DIR)"; \
+	fi; \
+	rm -rf $${installdir}
+
+#
+# Require gtk-doc when making dist
+#
+if HAVE_GTK_DOC
+dist-check-gtkdoc: docs
+else
+dist-check-gtkdoc:
+	@echo "*** gtk-doc is needed to run 'make dist'.         ***"
+	@echo "*** gtk-doc was not found when 'configure' ran.   ***"
+	@echo "*** please install gtk-doc and rerun 'configure'. ***"
+	@false
+endif
+
+dist-hook: dist-check-gtkdoc all-gtk-doc dist-hook-local
+	@mkdir $(distdir)/html
+	@cp ./html/* $(distdir)/html
+	@-cp ./$(DOC_MODULE).pdf $(distdir)/
+	@-cp ./$(DOC_MODULE).types $(distdir)/
+	@-cp ./$(DOC_MODULE)-sections.txt $(distdir)/
+	@cd $(distdir) && rm -f $(DISTCLEANFILES)
+	@$(GTKDOC_REBASE) --online --relative --html-dir=$(distdir)/html
+
+.PHONY : dist-hook-local docs