Explicitly initialize the am__fastdepCXX conditional if needed.
Apparently autoconf/automake forgets that if AC_PROG_CXX doesn't
get called.
AM_CXXFLAGS="$CXX_WARNING_FLAGS"
AC_SUBST(AM_CXXFLAGS)
AC_LANG_POP([C++])
+else
+ dnl Autoconf requires those automake conditionals to be defined when
+ dnl generating the config files, but apparently it forgets to initialize
+ dnl them dnl if AC_PROG_CXX never gets called. Therefore we do it manually.
+ am__fastdepCXX_TRUE='#'
+ am__fastdepCXX_FALSE=
fi
dnl *******************************