docs: Honour --{en, dis}able-xend when building docs

If a user has specified --disable-xend, they wont want the manpages either.

Propagating this parameters requires reorganising the way in which the
makefile chooses which documents to build.

There is now a split of {MAN1,MAN5,MARKDOWN,TXT}SRC-y to select which
documentation to build, which is separate from the patsubst section which
generates appropriate paths to trigger the later rules.

The manpages are quite easy to split between xend, xl and xenstore, and have
been.  Items from misc/ are much harder and been left.

Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Acked-by: Ian Campbell <Ian.Campbell@citrix.com>
CC: Ian Jackson <Ian.Jackson@eu.citrix.com>
[ ijc -- reran autogen.sh as requested. ]

config/Docs.mk.in

@@ -12,3 +12,6 @@ POD2HTML            := @POD2HTML@
 POD2TEXT            := @POD2TEXT@
 MARKDOWN            := @MARKDOWN@
 PERL                := @PERL@
+
+# Subsets of documentation to build
+CONFIG_XEND         := @xend@

docs/Makefile

@@ -6,20 +6,30 @@ VERSION		:= $(shell $(MAKE) -C $(XEN_ROOT)/xen --no-print-directory xenversion)
 
 DOC_ARCHES      := arm x86_32 x86_64
 
-DOC_MAN5SRC	:= $(wildcard man/*.pod.5)
-DOC_MAN1SRC	:= $(wildcard man/*.pod.1)
-DOC_MAN1	:= $(patsubst man/%.pod.1,man1/%.1,$(DOC_MAN1SRC))
-DOC_MAN5	:= $(patsubst man/%.pod.5,man5/%.5,$(DOC_MAN5SRC))
-DOC_MARKDOWN	:= $(wildcard misc/*.markdown)
-DOC_HTML	:= $(patsubst %.markdown,html/%.html,$(DOC_MARKDOWN)) \
-		   $(patsubst man/%.pod.1,html/man/%.1.html,$(DOC_MAN1SRC)) \
-		   $(patsubst man/%.pod.5,html/man/%.5.html,$(DOC_MAN5SRC)) \
-		   $(patsubst %.txt,html/%.txt,$(wildcard misc/*.txt)) \
-		   $(patsubst %,html/hypercall/%/index.html,$(DOC_ARCHES))
-DOC_TXT         := $(patsubst %.txt,txt/%.txt,$(wildcard misc/*.txt)) \
-		   $(patsubst %.markdown,txt/%.txt,$(DOC_MARKDOWN)) \
-		   $(patsubst man/%.pod.1,txt/man/%.1.txt,$(DOC_MAN1SRC)) \
-		   $(patsubst man/%.pod.5,txt/man/%.5.txt,$(DOC_MAN5SRC))
+# Documentation sources to build
+MAN1SRC-y := $(wildcard man/xl*.pod.1)
+MAN1SRC-y += $(wildcard man/xenstore*.pod.1)
+MAN1SRC-$(CONFIG_XEND) += man/xm.pod.1
+
+MAN5SRC-y := $(wildcard man/xl*.pod.5)
+MAN5SRC-$(CONFIG_XEND) += man/xend-config.sxp.pod.5 man/xmdomain.cfg.pod.5
+
+MARKDOWNSRC-y := $(wildcard misc/*.markdown)
+
+TXTSRC-y := $(wildcard misc/*.txt)
+
+
+DOC_MAN1 := $(patsubst man/%.pod.1,man1/%.1,$(MAN1SRC-y))
+DOC_MAN5 := $(patsubst man/%.pod.5,man5/%.5,$(MAN5SRC-y))
+DOC_HTML := $(patsubst %.markdown,html/%.html,$(MARKDOWNSRC-y)) \
+            $(patsubst man/%.pod.1,html/man/%.1.html,$(MAN1SRC-y)) \
+            $(patsubst man/%.pod.5,html/man/%.5.html,$(MAN5SRC-y)) \
+            $(patsubst %.txt,html/%.txt,$(TXTSRC-y)) \
+            $(patsubst %,html/hypercall/%/index.html,$(DOC_ARCHES))
+DOC_TXT  := $(patsubst %.txt,txt/%.txt,$(TXTSRC-y)) \
+            $(patsubst %.markdown,txt/%.txt,$(MARKDOWNSRC-y)) \
+            $(patsubst man/%.pod.1,txt/man/%.1.txt,$(MAN1SRC-y)) \
+            $(patsubst man/%.pod.5,txt/man/%.5.txt,$(MAN5SRC-y))
 
 .PHONY: all
 all: build

docs/configure

@@ -588,6 +588,7 @@ ac_unique_file="misc/xen-command-line.markdown"
 ac_subst_vars='LTLIBOBJS
 LIBOBJS
 PERL
+xend
 MARKDOWN
 POD2TEXT
 POD2HTML
@@ -634,6 +635,7 @@ SHELL'
 ac_subst_files=''
 ac_user_opts='
 enable_option_checking
+enable_xend
 '
       ac_precious_vars='build_alias
 host_alias
@@ -1249,6 +1251,13 @@ if test -n "$ac_init_help"; then
    esac
   cat <<\_ACEOF
 
+Optional Features:
+  --disable-option-checking  ignore unrecognized --enable/--with options
+  --disable-FEATURE       do not include FEATURE (same as --enable-FEATURE=no)
+  --enable-FEATURE[=ARG]  include FEATURE [ARG=yes]
+  --enable-xend           Enable xend toolstack documentation (default is
+                          DISABLED)
+
 Some influential environment variables:
   FIG2DEV     Path to fig2dev tool
   POD2MAN     Path to pod2man tool
@@ -1732,6 +1741,12 @@ ac_configure="$SHELL $ac_aux_dir/configure"  # Please don't use this var.
 
 
 
+
+
+
+
+
+
     # Extract the first word of "fig2dev", so it can be a program name with args.
 set dummy fig2dev; ac_word=$2
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
@@ -1981,6 +1996,31 @@ $as_echo "$as_me: WARNING: markdown is not available so some documentation won't
 fi
 
 
+# Enable/disable options
+
+# Check whether --enable-xend was given.
+if test "${enable_xend+set}" = set; then :
+  enableval=$enable_xend;
+fi
+
+
+if test "x$enable_xend" = "xno"; then :
+
+    ax_cv_xend="n"
+
+elif test "x$enable_xend" = "xyes"; then :
+
+    ax_cv_xend="y"
+
+elif test -z $ax_cv_xend; then :
+
+    ax_cv_xend="n"
+
+fi
+xend=$ax_cv_xend
+
+
+
 
 # Extract the first word of "perl", so it can be a program name with args.
 set dummy perl; ac_word=$2

docs/configure.ac

@@ -11,6 +11,7 @@ AC_CONFIG_AUX_DIR([../])
 # M4 Macro includes
 m4_include([../m4/docs_tool.m4])
 m4_include([../m4/path_or_fail.m4])
+m4_include([../m4/features.m4])
 
 AX_DOCS_TOOL_PROG([FIG2DEV], [fig2dev])
 AX_DOCS_TOOL_PROG([POD2MAN], [pod2man])
@@ -18,6 +19,9 @@ AX_DOCS_TOOL_PROG([POD2HTML], [pod2html])
 AX_DOCS_TOOL_PROG([POD2TEXT], [pod2text])
 AX_DOCS_TOOL_PROGS([MARKDOWN], [markdown], [markdown markdown_py])
 
+# Enable/disable options
+AX_ARG_DEFAULT_DISABLE([xend], [Enable xend toolstack documentation])
+
 AC_ARG_VAR([PERL], [Path to Perl parser])
 AX_PATH_PROG_OR_FAIL([PERL], [perl])