Fix "make docs" rule in Makefile for doc folder.

Signed-off-by: Manish Katiyar <mkatiyar@gmail.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>

configure

@@ -747,6 +747,7 @@ PERL
 LDCONFIG
 AR
 STRIP
+MAKEINFO
 BUILD_CC
 SIZEOF_SHORT
 SIZEOF_INT
@@ -11624,6 +11625,58 @@ else
   STRIP="$ac_cv_prog_STRIP"
 fi
 
+# Extract the first word of "makeinfo", so it can be a program name with args.
+set dummy makeinfo; ac_word=$2
+{ echo "$as_me:$LINENO: checking for $ac_word" >&5
+echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6; }
+if test "${ac_cv_prog_MAKEINFO+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test -n "$MAKEINFO"; then
+  ac_cv_prog_MAKEINFO="$MAKEINFO" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+  for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_MAKEINFO="makeinfo"
+    echo "$as_me:$LINENO: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+done
+IFS=$as_save_IFS
+
+fi
+fi
+MAKEINFO=$ac_cv_prog_MAKEINFO
+if test -n "$MAKEINFO"; then
+  { echo "$as_me:$LINENO: result: $MAKEINFO" >&5
+echo "${ECHO_T}$MAKEINFO" >&6; }
+else
+  { echo "$as_me:$LINENO: result: no" >&5
+echo "${ECHO_T}no" >&6; }
+fi
+
+
+if test "_$MAKEINFO" = "_"; then
+    MAKEINFO="@echo Makeinfo is missing. Info documentation will not be built.;true"
+else
+    case "$MAKEINFO" in
+      */missing.*)
+        { echo "$as_me:$LINENO: WARNING:
+*** Makeinfo is missing. Info documentation will not be built." >&5
+echo "$as_me: WARNING:
+*** Makeinfo is missing. Info documentation will not be built." >&2;}
+        ;;
+      *)
+        ;;
+    esac
+fi
+
 # Find a good install program.  We prefer a C program (faster),
 # so one script is as good as another.  But avoid the broken or
 # incompatible versions:
@@ -16167,6 +16220,7 @@ PERL!$PERL$ac_delim
 LDCONFIG!$LDCONFIG$ac_delim
 AR!$AR$ac_delim
 STRIP!$STRIP$ac_delim
+MAKEINFO!$MAKEINFO$ac_delim
 BUILD_CC!$BUILD_CC$ac_delim
 SIZEOF_SHORT!$SIZEOF_SHORT$ac_delim
 SIZEOF_INT!$SIZEOF_INT$ac_delim
@@ -16194,7 +16248,7 @@ LIBOBJS!$LIBOBJS$ac_delim
 LTLIBOBJS!$LTLIBOBJS$ac_delim
 _ACEOF
 
-  if test `sed -n "s/.*$ac_delim\$/X/p" conf$$subs.sed | grep -c X` = 83; then
+  if test `sed -n "s/.*$ac_delim\$/X/p" conf$$subs.sed | grep -c X` = 84; then
     break
   elif $ac_last_try; then
     { { echo "$as_me:$LINENO: error: could not make $CONFIG_STATUS" >&5

configure.in

@@ -615,6 +615,20 @@ AC_PATH_PROG(LDCONFIG, ldconfig, :)
 AC_CHECK_TOOL(AR, ar, ar)
 AC_CHECK_TOOL(RANLIB, ranlib, :)
 AC_CHECK_TOOL(STRIP, strip, :)
+AC_CHECK_PROG(MAKEINFO, makeinfo, makeinfo, )
+if test "_$MAKEINFO" = "_"; then
+    MAKEINFO="@echo Makeinfo is missing. Info documentation will not be built.;true"
+else
+    case "$MAKEINFO" in
+      */missing.*)
+        AC_MSG_WARN([
+*** Makeinfo is missing. Info documentation will not be built.])
+        ;;
+      *)
+        ;;
+    esac
+fi
+AC_SUBST(MAKEINFO)
 AC_PROG_INSTALL
 # See if we need a separate native compiler.
 if test $cross_compiling = no; then

doc/Makefile.in

@@ -13,7 +13,7 @@ INSTALL = @INSTALL@
 
 DVI=texi2dvi
 DVIPS=dvips -o "$@"
-INFO=makeinfo
+INFO=@MAKEINFO@
 HTML=texi2html
 
 all:: libext2fs.info libext2fs.dvi