[mm-common] Process documentation targets conditionally

[Daniel Elstner <daniel src gnome org>]

commit 1b4a9fcffda1179b91b5d94339e6620b4cb4a6de
Author: Daniel Elstner <daniel kitta gmail com>
Date:   Fri Dec 4 23:42:58 2009 +0200

    Process documentation targets conditionally
    
    * build/doc-reference.am (dist_reference_DATA), (dist_noinst_DATA):
    Assign the list of files to install and distribute conditionally,
    depending on whether ENABLE_DOCUMENTATION is true.  Thus, it is no
    longer required to skip the entire documentation build directory if
    the documentation is disabled.
    (install-data-local), (uninstall-data): As above, but for the phony
    targets to install and uninstall files to the system.
    ($(doc_config)): Do not add any commands to the rule when building
    from the top-level directory.  Automake automatically generates rules
    and commands to rebuild config.status output files at the top level.

 build/doc-reference.am |   23 ++++++++++++++++++-----
 1 files changed, 18 insertions(+), 5 deletions(-)
---
diff --git a/build/doc-reference.am b/build/doc-reference.am
index 21f3246..88ec478 100644
--- a/build/doc-reference.am
+++ b/build/doc-reference.am
@@ -67,8 +67,18 @@ referencedir = $(libdocdir)/reference
 htmlrefdir   = $(referencedir)/html
 devhelpdir   = $(datadir)/devhelp/books/$(book_name)
 
-dist_reference_DATA = $(doxytagfile)
-dist_noinst_DATA    = $(devhelpfile) $(call vpath_listall,$(htmlref_patterns))
+if ENABLE_DOCUMENTATION
+doc_inst_targets = install-htmlref install-devhelp
+doc_inst_files   = $(doxytagfile)
+doc_dist_files   = $(devhelpfile) $(call vpath_listall,$(htmlref_patterns))
+else
+doc_inst_targets =
+doc_inst_files   =
+doc_dist_files   =
+endif
+
+dist_reference_DATA = $(doc_inst_files)
+dist_noinst_DATA    = $(doc_dist_files)
 
 DISTCLEANFILES       = $(doc_outdir)/doxygen.log
 MAINTAINERCLEANFILES = $(doxytagfile) $(devhelpfile) $(doc_outdir)/html/*
@@ -121,10 +131,10 @@ endif
 
 # Hook up custom rules for translating references to external documentation
 # to the actual location at install time.
-install-data-local: install-htmlref install-devhelp
+install-data-local: $(doc_inst_targets)
 
 # Hook up corresponding custom uninstall rules.
-uninstall-local: uninstall-htmlref uninstall-devhelp
+uninstall-local: $(addprefix un,$(doc_inst_targets))
 
 # Install the HTML reference documentation files with just one invocation
 # of doc-install.pl to speed up the build process.  Make use of the --glob
@@ -157,10 +167,13 @@ uninstall-devhelp:
 	rm -f '$(DESTDIR)$(devhelpdir)/$(notdir $(devhelpfile))'
 	-test ! -r '$(DESTDIR)$(devhelpdir)' || rmdir '$(DESTDIR)$(devhelpdir)'
 
-# Regenerate the Doxygen configuration file automatically.
+# Regenerate the Doxygen configuration file automatically.  In the
+# top-level build directory Automake already takes care of this.
+ ifneq ($(subdir),.)
 $(doc_config): $(srcdir)/$(doc_config).in $(top_builddir)/config.status
 	$(AM_V_GEN)cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@
 
+ endif
 # Make sure that the documentation will always have been generated before
 # executing commands of a rule that depends on files in $(doc_outdir)/html/.
 $(doc_outdir)/html/%: | $(doxytagfile)