Open up dependency on Eigen and FFTW

tests/solver/Makefile.am

@@ -0,0 +1,19 @@
+# additional include paths necessary to compile the C++ library
+
+bin_PROGRAMS =
+SUBDIRS =
+
+AM_CXXFLAGS = -I$(top_srcdir)/include
+AM_LDFLAGS = -L$(top_builddir)/lib
+
+if USE_LAPACK
+AM_CXXFLAGS += -DUSE_LAPACK
+if USE_LAPACK_LIB
+#if test "X${ac_LAPACK}X" != XyesX 
+AM_CXXFLAGS += -I$(ac_LAPACK)/include
+AM_LDFLAGS += -L$(ac_LAPACK)/lib
+#fi
+endif
+endif
+
+include Make.inc