在eclipse中鏈接gsl庫時未定義的引用

Question

我試圖鏈接使用GSL的開源項目，並在libgsl中獲取未定義的引用。我正在使用eclipse，並且已將-lgslcblas -lgsl添加到庫設置中。我錯過了什麼？

g++ -L/home/erwin/ochack/bin/opencog/spatial -L/home/erwin/ochack/bin/opencog/persist/sql -L/home/erwin/ochack/bin/opencog/guile -L/home/erwin/ochack/bin/opencog/util -L/home/erwin/ochack/bin/opencog/persist/xml -o "ocserver" ./opencog/server/Agent.o ./opencog/server/BaseServer.o ./opencog/server/BuiltinRequestsModule.o ./opencog/server/CogServer.o ./opencog/server/CogServerMain.o ./opencog/server/ConsoleSocket.o ./opencog/server/DataRequest.o ./opencog/server/ExitRequest.o ./opencog/server/HelpRequest.o ./opencog/server/ListRequest.o ./opencog/server/LoadModuleRequest.o ./opencog/server/LoadRequest.o ./opencog/server/NetworkServer.o ./opencog/server/Request.o ./opencog/server/SaveRequest.o ./opencog/server/ServerSocket.o ./opencog/server/ShutdownRequest.o ./opencog/server/SleepRequest.o ./opencog/server/SystemActivityTable.o ./opencog/server/UnloadModuleRequest.o ./opencog/atomspace/Atom.o ./opencog/atomspace/AtomSpace.o ./opencog/atomspace/AtomSpaceAsync.o ./opencog/atomspace/AtomSpaceImpl.o ./opencog/atomspace/AtomSpaceInit.o ./opencog/atomspace/AtomTable.o ./opencog/atomspace/AttentionBank.o ./opencog/atomspace/AttentionValue.o ./opencog/atomspace/ClassServer.o ./opencog/atomspace/CompositeTruthValue.o ./opencog/atomspace/CountTruthValue.o ./opencog/atomspace/FixedIntegerIndex.o ./opencog/atomspace/Handle.o ./opencog/atomspace/HandleEntry.o ./opencog/atomspace/HandleIterator.o ./opencog/atomspace/HandleSeqIndex.o ./opencog/atomspace/HandleSet.o ./opencog/atomspace/HandleTemporalPair.o ./opencog/atomspace/HandleTemporalPairEntry.o ./opencog/atomspace/HandleToTemporalEntryMap.o ./opencog/atomspace/ImportanceIndex.o ./opencog/atomspace/IndefiniteTruthValue.o ./opencog/atomspace/Link.o ./opencog/atomspace/LinkIndex.o ./opencog/atomspace/NameIndex.o ./opencog/atomspace/Node.o ./opencog/atomspace/NodeIndex.o ./opencog/atomspace/NullTruthValue.o ./opencog/atomspace/PredicateIndex.o ./opencog/atomspace/SimpleTruthValue.o ./opencog/atomspace/SpaceServer.o ./opencog/atomspace/StatisticsMonitor.o ./opencog/atomspace/StringIndex.o ./opencog/atomspace/TLB.o ./opencog/atomspace/TargetTypeIndex.o ./opencog/atomspace/Temporal.o ./opencog/atomspace/TemporalEntry.o ./opencog/atomspace/TemporalMap.o ./opencog/atomspace/TemporalTable.o ./opencog/atomspace/TemporalToHandleSetMap.o ./opencog/atomspace/TimeServer.o ./opencog/atomspace/Trail.o ./opencog/atomspace/TruthValue.o ./opencog/atomspace/TypeIndex.o ./opencog/atomspace/VersionHandle.o ./opencog/atomspace/ZMQMessages.pb.o -lboost_filesystem -lpersist -lsmob -lgslcblas -lgsl -lboost_signals -lboost_thread -lxml -lutil -lSpaceMap -lzmq -lboost_system -lprotobuf 
/usr/lib/gcc/x86_64-linux-gnu/4.6/../../../../lib/libgsl.so: undefined reference to `cblas_zher2k' 
/usr/lib/gcc/x86_64-linux-gnu/4.6/../../../../lib/libgsl.so: undefined reference to `cblas_strsv' 
/usr/lib/gcc/x86_64-linux-gnu/4.6/../../../../lib/libgsl.so: undefined reference to `cblas_zdotc_sub' 
/usr/lib/gcc/x86_64-linux-gnu/4.6/../../../../lib/libgsl.so: undefined reference to `cblas_dtrsm' 
/usr/lib/gcc/x86_64-linux-gnu/4.6/../../../../lib/libgsl.so: undefined reference to `cblas_zhemm' 
/usr/lib/gcc/x86_64-linux-gnu/4.6/../../../../lib/libgsl.so: undefined reference to `cblas_sgemv' 
/usr/lib/gcc/x86_64-linux-gnu/4.6/../../../../lib/libgsl.so: undefined reference to `cblas_strmm' 

等等

Answer 1

我找到了解決方案：顯然庫的順序很重要：-lgsl -lgslcblas起作用。

Answer 2

潛在的，有很多的東西，可能是錯在這裏。

1. 你確定你已經在Eclipse中正確添加了庫嗎？例如，您不應在路徑和符號 - >庫中指定-lgsl。 Eclipse增加了前面的-l本身，因此您指定的全部是gsl。
2. 您是否在實際嘗試運行的構建變體中添加了庫路徑？舉例來說，你可能在你試圖發佈一個Release版本時，只爲Debug版本指定了庫路徑。

此外，（這實際上只是一個猜測），科學庫允許您使用外部版本的BLAS是相當普遍的。有時他們的配置設置甚至堅持將外部BLAS作爲默認設置。通過-lcblas作爲鏈接選項是否有助於解決這些錯誤？