Configure: Add a maintainer option to prepare generation of HTML for the website

When the new configure option '--with-web-repo' is used, the new target
'make website' becomes available and will generate HTML pages to be placed
in the Homepage Repository.

This patch does not generate any content yet but it prepares the skeleton
to handle everything.

Signed-off-by: Christophe CURIS <christophe.curis@free.fr>

configure.ac

@@ -232,6 +232,18 @@ AS_IF([test "x$debug" = "xyes"],
 ])
 
 
+dnl To upload documentation to the Website
+dnl ======================================
+AC_ARG_WITH([web-repo],
+    [AS_HELP_STRING([--with-web-repo=PATH], [path to your git repository for the Web home page (maintainer stuff)])],
+    [AS_CASE([$withval],
+        [yes], [AC_MSG_ERROR([bad value '$withval' for --with-web-repo, expected a path]) ],
+        [no],  [WEB_REPO_ROOT=""],
+        [WEB_REPO_ROOT=$withval])],
+    [WEB_REPO_ROOT=""])
+WM_CHECK_WEBREPODIR
+
+
 dnl Support for Nested Functions by the compiler
 dnl ============================================
 WM_PROG_CC_NESTEDFUNC
@@ -918,6 +930,8 @@ echo "Supported graphic format libraries  :$supported_gfx"
 echo "Unsupported features                :$unsupported"
 echo "Pango text layout support in WINGs  : $pango"
 echo "Translated languages to support     :$supported_locales"
+AS_IF([test "x$WEB_REPO_ROOT" != "x"],
+    [AS_ECHO(["Git repository for WMaker's Website : $WEB_REPO_ROOT"]) ])
 AS_IF([test "x$debug" = "xyes"],
     [AS_ECHO(["Debug enabled: CFLAGS = $CFLAGS"]) ])
 echo