Fix CMakeLists when BLAS isn't found

CMakeLists.txt

@@ -4,12 +4,14 @@ project (MAXENT)
 SET(CMAKE_INSTALL_RPATH_USE_LINK_PATH TRUE)
 find_package(ALPSCore 2.0 REQUIRED)
 
+list(APPEND LINK_ALL ${ALPSCore_LIBRARIES})
 #note: LAPACK also finds BLAS
 find_package(LAPACK)
 if(LAPACK_FOUND AND USE_LAPACK)
     set(HAVE_BLAS 1)
     set(HAVE_LAPACK 1)
     message(STATUS "Using LAPACK and BLAS routines for SVD")
+    list(APPEND LINK_ALL ${BLAS_LIBRARIES} ${LAPACK_LIBRARIES})
 else()
     set(HAVE_BLAS 0)
     set(HAVE_LAPACK 0)
@@ -23,6 +25,7 @@ include_directories("${PROJECT_BINARY_DIR}/config")
 list(APPEND CMAKE_MODULE_PATH ${CMAKE_SOURCE_DIR}/cmake)
 message(STATUS "Finding packages, please stand by...")
 find_package(GSL REQUIRED)
+list(APPEND LINK_ALL ${GSL_LIBRARIES})
 
 # new ALPSCore provides Eigen
 if (NOT ALPSCore_HAS_EIGEN_VERSION)
@@ -56,22 +59,21 @@ set(LIB_FILES
   )
 
 ADD_LIBRARY(libmaxent ${LIB_FILES})
-target_link_libraries(libmaxent
-	${ALPSCore_LIBRARIES} ${GSL_LIBRARIES} ${BLAS_LIBRARIES} ${LAPACK_LIBRARIES} )
+target_link_libraries(libmaxent ${LINK_ALL})
 #remove default "lib" prefix
 set_target_properties(libmaxent PROPERTIES PREFIX "")
 #executable
 add_executable(maxent 
   ./src/maxent.cpp
   )
-target_link_libraries(maxent libmaxent ${ALPSCore_LIBRARIES} ${GSL_LIBRARIES} ${BLAS_LIBRARIES} ${LAPACK_LIBRARIES})
+target_link_libraries(maxent libmaxent ${LINK_ALL})
 
 #testing setup
 option(Testing "Enable testing" ON)
 
 if (Testing)
   add_library(gtest ./test/gtest-all.cc ./test/gtest_main.cc)
-  list(APPEND LINK_ALL libmaxent ${ALPSCore_LIBRARIES} ${GSL_LIBRARIES} ${BLAS_LIBRARIES} ${LAPACK_LIBRARIES})
+  list(APPEND LINK_ALL libmaxent)
   enable_testing(test)
   add_subdirectory(test)
 endif (Testing)