Index: trunk/psLib/configure.ac
===================================================================
--- trunk/psLib/configure.ac	(revision 24322)
+++ trunk/psLib/configure.ac	(revision 29542)
@@ -202,4 +202,82 @@
 CPPFLAGS=${TMP_CPPFLAGS}
 
+dnl ------------------ kapa,libkapa options -------------------------
+dnl -- libkapa implies the requirement for libpng, libjpeg as well --
+
+dnl save LIBS/CFLAGS/LDFLAGS
+TMP_LIBS=${LIBS}
+TMP_CFLAGS=${CFLAGS}
+TMP_LDFLAGS=${LDFLAGS}
+TMP_CPPFLAGS=${CPPFLAGS}
+
+dnl test for command-line options: use ohana-config if not supplied
+KAPA_CFLAGS_CONFIG="true"
+KAPA_LIBS_CONFIG="true"
+AC_ARG_WITH(kapa,
+[AS_HELP_STRING(--with-kapa=DIR,Specify location of libkapa)],
+[KAPA_CFLAGS="-I$withval/include" KAPA_LIBS="-L$withval/lib" 
+ KAPA_CFLAGS_CONFIG="false"       KAPA_LIBS_CONFIG="false"])
+AC_ARG_WITH(kapa-include,
+[AS_HELP_STRING(--with-kapa-include=DIR,Specify libkapa include directory.)],
+[KAPA_CFLAGS="-I$withval" KAPA_CFLAGS_CONFIG="false"])
+AC_ARG_WITH(kapa-lib,
+[AS_HELP_STRING(--with-kapa-lib=DIR,Specify libkapa library directory.)],
+[KAPA_LIBS="-L$withval" KAPA_LIBS_CONFIG="false"])
+
+echo "KAPA_CFLAGS_CONFIG: $KAPA_CFLAGS_CONFIG"
+echo "KAPA_LIBS_CONFIG: $KAPA_LIBS_CONFIG"
+echo "KAPA_CFLAGS: $KAPA_CFLAGS"
+echo "KAPA_LIBS: $KAPA_LIBS"
+
+dnl HAVE_KAPA is set to false if any of the tests fail
+HAVE_KAPA="true"
+AC_MSG_NOTICE([checking for libkapa])
+if test "$KAPA_CFLAGS_CONFIG" = "true" -o "$KAPA_LIBS_CONFIG" = "true"; then
+  AC_MSG_NOTICE([kapa info supplied by ohana-config])
+  KAPA_CONFIG=`which ohana-config`
+  AC_CHECK_FILE($KAPA_CONFIG,[],
+    [HAVE_KAPA="false"; AC_MSG_WARN([libkapa is not found: output plots disabled.  Obtain libkapa at http://kiawe.ifa.hawaii.edu/Elixir/Ohana or use --with-kapa to specify location])])
+  
+  echo "HAVE_KAPA: $HAVE_KAPA"
+  echo "KAPA_CFLAGS_CONFIG: $KAPA_CFLAGS_CONFIG"
+
+  if test "$HAVE_KAPA" = "true" -a "$KAPA_CFLAGS_CONFIG" = "true" ; then
+   AC_MSG_NOTICE([libkapa cflags info supplied by ohana-config])
+   AC_MSG_CHECKING([libkapa cflags])
+   KAPA_CFLAGS="`${KAPA_CONFIG} --cflags`"
+   AC_MSG_RESULT([${KAPA_CFLAGS}])
+  fi
+
+  if test "$HAVE_KAPA" = "true" -a "$KAPA_LIBS_CONFIG" = "true" ; then
+   AC_PATH_X
+   if test "$no_x" = "yes" ; then
+      AC_MSG_WARN([X11 not found: output plots using kapa disabled.  Use --x-includes and --x-libraries if required.])
+      HAVE_KAPA="false"
+   else
+      AC_MSG_NOTICE([libkapa ldflags info supplied by ohana-config])
+      AC_MSG_CHECKING([libkapa ldflags])
+      if test -n "$x_libraries" ; then
+            KAPA_LIBS="`${KAPA_CONFIG} --libs` -L$x_libraries -lX11"
+      else
+            KAPA_LIBS="`${KAPA_CONFIG} --libs` -lX11"
+      fi
+      if test -n "$x_includes" ; then
+            KAPA_CFLAGS="${KAPA_CFLAGS} -I$x_includes"
+      else
+            KAPA_CFLAGS="${KAPA_CFLAGS}"
+      fi
+      AC_MSG_RESULT([${KAPA_LIBS}])
+   fi
+  fi
+fi
+
+if test "$HAVE_KAPA" = "true" ; then
+ AC_MSG_NOTICE([libkapa supplied])
+ PSLIB_CFLAGS="${PSLIB_CFLAGS} ${KAPA_CFLAGS}"
+ PSLIB_LIBS="${PSLIB_LIBS} ${KAPA_LIBS}"
+else
+ AC_MSG_NOTICE([libkapa ignored])
+fi
+
 dnl ------------------ libjpeg options ---------------------
 
@@ -239,4 +317,53 @@
 LDFLAGS=${TMP_LDFLAGS}
 CPPFLAGS=${TMP_CPPFLAGS}
+
+dnl ------------------ libpng options ---------------------
+
+dnl save LIBS/CFLAGS/LDFLAGS
+TMP_LIBS=${LIBS}
+TMP_CFLAGS=${CFLAGS}
+TMP_LDFLAGS=${LDFLAGS}
+TMP_CPPFLAGS=${CPPFLAGS}
+
+AC_ARG_WITH(png,
+[AS_HELP_STRING(--with-png=DIR,Specify location of libpng.)],
+[PNG_CFLAGS="-I$withval/include"
+ PNG_LDFLAGS="-L$withval/lib"])
+AC_ARG_WITH(png-include,
+[AS_HELP_STRING(--with-png-include=DIR,Specify libpng include directory.)],
+[PNG_CFLAGS="-I$withval"])
+AC_ARG_WITH(png-lib,
+[AS_HELP_STRING(--with-png-lib=DIR,Specify libpng library directory.)],
+[PNG_LDFLAGS="-L$withval"])
+
+CFLAGS="${CFLAGS} ${PNG_CFLAGS}"
+CPPFLAGS=${CFLAGS}
+LDFLAGS="${LDFLAGS} ${PNG_LDFLAGS}"
+
+AC_CHECK_HEADERS([png.h],
+  [PSLIB_CFLAGS="$PSLIB_CFLAGS $PNG_CFLAGS" AC_SUBST(PNG_CFLAGS)],
+  [HAVE_KAPA=false; AC_MSG_WARN([libpng headers not found: output plots disabled.  Obtain libpng from http://www.ijg.org/ or use --with-png to specify location.])]
+)
+
+AC_CHECK_LIB(png,png_init_io,
+  [PSLIB_LIBS="$PSLIB_LIBS $PNG_LDFLAGS -lpng"],
+  [HAVE_KAPA=false; AC_MSG_WARN([libpng library not found: output plots disabled.  Obtain libpng from http://www.ijg.org/ or use --with-png to specify location.])]
+)
+
+dnl restore the CFLAGS/LDFLAGS
+LIBS=${TMP_LIBS}
+CFLAGS=${TMP_CFLAGS}
+LDFLAGS=${TMP_LDFLAGS}
+CPPFLAGS=${TMP_CPPFLAGS}
+
+dnl ------------------ use kapa or not? ---------------------
+
+if test "$HAVE_KAPA" == "true" ; then
+  AC_MSG_RESULT([including plotting functions])
+  AC_DEFINE([HAVE_KAPA],[1],[enable use of libkapa])
+else
+  AC_MSG_RESULT([skipping plotting functions])
+  AC_DEFINE([HAVE_KAPA],[0],[disable use of libkapa])
+fi
 
 dnl ------------------- SWIG options ---------------------