AC_ARG_WITH(cudd,
	[ --with-cudd[=DIR]           use CUDD package in DIR],
	yap_cv_cudd="$withval",
	[yap_cv_cudd=no])

AC_ARG_ENABLE(bddlib,
	[ --enable-bddlib           dynamic bdd library ],
	dynamic_bdd="$enableval", dynamic_bdd=no)

if test "$yap_cv_cudd" = no 
then
  PKG_BDDLIB=""
elif test "$dynamic_bdd" = yes
then
  PKG_BDDLIB="packages/bdd packages/ProbLog/simplecudd packages/ProbLog/simplecudd_lfi"
else
  PKG_BDDLIB="packages/ProbLog/simplecudd packages/ProbLog/simplecudd_lfi"
fi

if test "$yap_cv_cudd" != no; then

oldlibs="$LIBS"

if test "$yap_cv_cudd" != "NONE" -a "$yap_cv_cudd" != "yes"; then
   CUDD_CPPFLAGS="-I $yap_cv_cudd/include"
   cudd_dir="$yap_cv_cudd"
elif test "$prefix" != "NONE"; then
   CUDD_CPPFLAGS="-I $prefix/include"
   cudd_dir="$prefix"
else
   CUDD_CPPFLAGS="-I /usr/local/include"
   cudd_dir=/usr/local
fi

OLD_CPPFLAGS="$CPPFLAGS"
CPPFLAGS="$CPPFLAGS $CUDD_CPPFLAGS" 

AC_CHECK_HEADERS(util.h cudd/util.h cudd.h cudd/cudd.h)
AC_CHECK_HEADERS(cuddInt.h cudd/cuddInt.h)

dnl cudd can be most everywhere
if test -d "$cudd_dir/lib64/cudd" -a "$YAP_TARGET" = amd64; then
  LIBS="$LIBS -L $cudd_dir/lib64/cudd"
elif test -d "$cudd_dir/lib64" -a "$YAP_TARGET" = amd64; then
  LIBS="$LIBS -L $cudd_dir/lib64  -L $cudd_dir/lib"
elif test -d "$cudd_dir/lib/cudd"; then
  LIBS="$LIBS -L $cudd_dir/lib/cudd"
elif test -d "$cudd_dir/lib"; then
  LIBS="$LIBS -L $cudd_dir/lib"
fi

if test "$target_os" = "mingw32"  -o "$target_os" = "mingw64"
then
     #mingw: we know where things are
  CUDD_LDFLAGS="$cudd_dir/lib/all_cudd.dll"
  cudd_installed="yes"
else

if test -d "$cudd_dir/util"; then
  LIBS="$LIBS -L $cudd_dir/util"
fi

AC_SEARCH_LIBS(util_print_cpu_stats, [cuddutil util])

if test -d "$cudd_dir/st"; then
  LIBS="$LIBS -L $cudd_dir/st"
fi

AC_SEARCH_LIBS(st_insert, [cuddst st])

if test -d "$cudd_dir/epd"; then
  LIBS="$LIBS -L $cudd_dir/epd"
fi

AC_SEARCH_LIBS(EpdAdd, [epd])

if test -d "$cudd_dir/mtr"; then
  LIBS="$LIBS -L $cudd_dir/mtr"
fi

AC_SEARCH_LIBS(Mtr_InitTree, [mtr])

if test -d "$cudd_dir/cudd"; then
  LIBS="$LIBS -L $cudd_dir/cudd"
fi

AC_SEARCH_LIBS(Cudd_Init, [cudd], [cudd_installed="yes"], [cudd_installed="no"])

CPPFLAGS="$OLD_CPPFLAGS"

if test "$cudd_installed" = yes; then
  CUDD_LDFLAGS="$LIBS"
else
  cat << EOF
##################################################################
# ERROR: Could not find cudd library. Either I don't have the
# correct path, or CUDD is installed in some strange way
##################################################################
EOF
     fi

LIBS="$oldlibs"

fi
fi

AC_SUBST(PKG_BDDLIB)
AC_SUBST(CUDD_LDFLAGS)
AC_SUBST(CUDD_CPPFLAGS)

mkdir -p  packages/bdd

if test "$PKG_BDDLIB" != ""; then
AC_CONFIG_FILES([packages/bdd/Makefile])
AC_CONFIG_FILES([packages/ProbLog/simplecudd/Makefile])
AC_CONFIG_FILES([packages/ProbLog/simplecudd_lfi/Makefile])
fi