build: Substitute doc configs

Since Meson uses out-of-tree builds, we need to make the paths
in the config replaceable before we can switch to Meson.

configure.ac

@@ -296,12 +296,19 @@ fi
 AM_CONDITIONAL(ENABLE_GEGL, test "x$enable_gegl" = "xyes")
 AC_SUBST(DOXYGEN_EXCLUDED)
 
+DOXYXML_BUILD_PATH="$PWD/doc"
+AC_SUBST(DOXYXML_BUILD_PATH)
+
+DOXYGEN_SOURCE_ROOT="$PWD"
+AC_SUBST(DOXYGEN_SOURCE_ROOT)
+
 # Set pkg-config variables before generation.
 AC_SUBST(PKG_CONFIG_REQUIRES)
 
 AC_CONFIG_FILES([
   doc/Doxyfile
   doc/Makefile
+  doc/source/conf.py
   gegl/libmypaint-gegl-]libmypaint_api_platform_version()[.pc:gegl/libmypaint-gegl.pc.in
   gegl/Makefile
   libmypaint-]libmypaint_api_platform_version()[.pc:libmypaint.pc.in

doc/.gitignore

@@ -1,3 +1,4 @@
+source/conf.py
 Doxyfile
 doxygen/
 build/

doc/Doxyfile.in

@@ -38,7 +38,7 @@ PROJECT_NAME           = "libmypaint"
 # could be handy for archiving the generated documentation or if some version
 # control system is used.
 
-PROJECT_NUMBER         = 0.1
+PROJECT_NUMBER         = @LIBMYPAINT_VERSION@
 
 # Using the PROJECT_BRIEF tag one can provide an optional one line description
 # for a project that appears at the top of each page and should give viewer a
@@ -58,7 +58,7 @@ PROJECT_LOGO           =
 # entered, it will be relative to the location where doxygen was started. If
 # left blank the current directory will be used.
 
-OUTPUT_DIRECTORY       =
+OUTPUT_DIRECTORY       = @DOXYXML_BUILD_PATH@
 
 # If the CREATE_SUBDIRS tag is set to YES then doxygen will create 4096 sub-
 # directories (in 2 levels) under the output directory of each output format and
@@ -819,7 +819,7 @@ WARN_LOGFILE           =
 # spaces. See also FILE_PATTERNS and EXTENSION_MAPPING
 # Note: If this tag is empty the current directory is searched.
 
-INPUT                  = ../..
+INPUT                  = @DOXYGEN_SOURCE_ROOT@
 
 # This tag can be used to specify the character encoding of the source files
 # that doxygen parses. Internally doxygen uses the UTF-8 encoding. Doxygen uses

doc/Makefile.am

@@ -1,5 +1,4 @@
 EXTRA_DIST =		\
-	source/conf.py	\
 	source/index.rst
 
 if ENABLE_DOCS

doc/source/conf.py → doc/source/conf.py.in

@@ -37,7 +37,7 @@
 
 # Breathe setup, for integrating doxygen content
 extensions.append('breathe')
-doxyxml_dir = os.path.join(os.path.abspath(os.path.dirname(__file__)), '../doxygen')
+doxyxml_dir = '@DOXYXML_BUILD_PATH@'
 print(doxyxml_dir)
 breathe_projects = {"libmypaint": doxyxml_dir}
 breathe_default_project = "libmypaint"
@@ -63,9 +63,9 @@
 # built documents.
 #
 # The short X.Y version.
-version = '0.1'
+version = '@LIBMYPAINT_VERSION@'
 # The full version, including alpha/beta/rc tags.
-release = '0.1'
+release = '@LIBMYPAINT_VERSION_FULL@'
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.