now user-guide.info is built only when "makeinfo" found

user-guide info is built only when "makeinfo" found

Signed-off-by: Anand V. Avati <avati@amp.gluster.com>

configure.ac

@@ -134,6 +134,26 @@ AC_CANONICAL_HOST
 AC_PROG_CC
 AC_PROG_LIBTOOL
 
+# texinfo check
+AC_CHECK_PROG([INFO], [makeinfo], [yes], [no])
+if test "x$INFO" = "xno"; then
+   AC_MSG_WARN([
+*** Makeinfo is missing. Info documentation will not be built.])
+    BUILD_INFO=
+else
+    BUILD_INFO=user-guide
+    case "$INFO" in
+      */missing\ makeinfo*)
+      BUILD_INFO=
+      AC_MSG_WARN([
+*** Makeinfo is missing. Info documentation will not be built.])
+        ;;
+      *)
+    esac
+fi
+AC_SUBST(INFO)
+AC_SUBST(BUILD_INFO)
+
 # LEX needs a check
 AC_PROG_LEX
 if test  "x${LEX}" != "xflex" -a "x${FLEX}" != "xlex"; then

doc/Makefile.am

@@ -1,7 +1,8 @@
 EXTRA_DIST = glusterfs.vol.sample glusterfsd.vol.sample glusterfs.8 \
 	porting_guide.txt authentication.txt coding-standard.pdf get_put_api_using_xattr.txt \
 	translator-options.txt mac-related-xattrs.txt replicate.pdf
-SUBDIRS = examples hacker-guide user-guide
+
+SUBDIRS = examples hacker-guide $(BUILD_INFO)
 
 voldir = $(sysconfdir)/glusterfs
 vol_DATA = glusterfs.vol.sample glusterfsd.vol.sample

doc/user-guide/Makefile.am

@@ -1 +1,3 @@
 info_TEXINFOS = user-guide.texi
+CLEANFILES = *~ 
+DISTCLEANFILES = .deps/*.P *.info *vti