wmaker: create script to handle conditional and variables replacement in man pages

Because the man page references some stuff that are dependant on the
configure options, it is a good idea to update the man page accordingly, so
the user will not be puzzled later.

There is now a script which takes care of replacing '@var@' in the same way
autoconf does, but also which can handle conditional '@def@' removal (for
the case of feature dependant command line options).

The man page for Window Maker is now processed this way so user will always
see accurate information.

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

doc/Makefile.am

@@ -2,7 +2,7 @@
 
 SUBDIRS = build sk cs ru
 
-man_MANS = \
+dist_man_MANS = \
 	geticonset.1x \
 	getstyle.1x \
 	get-wings-flags.1 \
@@ -15,7 +15,6 @@ man_MANS = \
 	wdwrite.1x \
 	WindowMaker.1x \
 	wmagnify.1x \
-	wmaker.1x \
 	wmgenmenu.1 \
 	wmmenugen.1 \
 	wmsetbg.1x \
@@ -23,7 +22,19 @@ man_MANS = \
 	wxcopy.1x \
 	wxpaste.1x
 
-EXTRA_DIST = $(man_MANS)
+man_MANS = \
+	wmaker.1x
+
+MOSTLYCLEANFILES = wmaker.1x
+
+EXTRA_DIST = wmaker.in
+
+wmaker.1x: wmaker.in Makefile $(top_builddir)/config.h
+	$(AM_V_GEN)$(top_srcdir)/script/replace-ac-keywords.sh \
+		--header "$(top_builddir)/config.h" --filter "HAVE_INOTIFY" \
+		-D"sysconfdir=$(sysconfdir)" --replace "sysconfdir" \
+		-D"pkgdatadir=$(pkgdatadir)" --replace "pkgdatadir" \
+		-o "wmaker.1x"  "$(srcdir)/wmaker.in"
 
 # Create a 'silent rule' for our make check the same way automake does
 AM_V_CHKOPTS = $(am__v_CHKOPTS_$(V))
@@ -35,6 +46,6 @@ check-local: wmaker-args
 
 wmaker-args:
 	$(AM_V_CHKOPTS)$(top_srcdir)/script/check-cmdline-options-doc.sh \
-		--program "$(top_builddir)/src/wmaker" --man-page "$(top_srcdir)/doc/wmaker.1x"
+		--program "$(top_builddir)/src/wmaker" --man-page "wmaker.1x"
 
 .PHONY: wmaker-args