Release 3-2-3 with tag: REL_mrw-c++-3-2-3

configure.in

@@ -17,7 +17,7 @@ AC_CANONICAL_SYSTEM
 PACKAGENAME=mrw-c++
 m4_define(x_major, 3)
 m4_define(x_minor, 2)
-m4_define(x_least, 3)
+m4_define(x_least, 4)
 
 # copy M4 to shell
 MAJOR=x_major
@@ -95,6 +95,11 @@ AC_ARG_ENABLE(dot,
   [  --disable-dot           disable dot graphic tools for documentation],
   [have_dot="$enableval"])
 test "$enableval" = "yes" && HAVE_DOT="YES" || HAVE_DOT="NO";
+AC_ARG_ENABLE(doxygen,
+  [  --disable-doxygen       disable build of documentation],
+  [have_doxygen="$enableval"])
+test "$enableval" = "yes" && HAVE_DOXYGEN="YES" || HAVE_DOXYGEN="NO";
+AM_CONDITIONAL(HAVE_DOXYGEN, test "$enableval" = "yes")
 AC_ARG_ENABLE(dir,
   [  --disable-dir           disable POSIX directory access],
   [have_dir="$enableval"])
@@ -186,6 +191,7 @@ AM_PATH_CPPUNIT([1.0.0], [have_cppunit="yes"], [have_cppunit="no"])
 
 # export macros
 AC_SUBST(HAVE_DOT)
+AC_SUBST(HAVE_DOXYGEN)
 AC_SUBST(THREADS)
 AC_SUBST(PACKAGENAME)
 AC_SUBST(AM_CXXFLAGS)
@@ -206,6 +212,9 @@ if test "$have_dot" = "no"; then
 AC_MSG_WARN([Missing program dot!
   - when you rebild documentation with make doc, there are no generated images
   - there are precompiled derived files in the distribution]); fi
+if test "$have_doxygen" = "no"; then
+AC_MSG_WARN([Disabled doxygen!
+  - documentation will not be built]); fi
 if test "$have_cppunit" = "no"; then
 AC_MSG_WARN([Missing cppunit development library!
   - you cannot check the library using "make check"