Problems building the recommended packages from R-3.1.1 source: ** building package indices Loading required package: Matrix Error in dyn.load(file, DLLpath = DLLpath, ...) : unable to load shared object '/home/meb/source/R-3.1.1/library/Matrix/libs/Matrix.so': rtld: 0712-001 Symbol dtrsv_ was referenced from module /home/meb/source/R-3.1.1/library/Matrix/libs/Matrix.so(), but a runtime definition of the symbol was not found. rtld: 0712-001 Symbol dgemv_ was referenced from module /home/meb/source/R-3.1.1/library/Matrix/libs/Matrix.so(), but a runtime definition of the symbol was not found. rtld: 0712-001 Symbol dtrsm_ was referenced from module /home/meb/source/R-3.1.1/library/Matrix/libs/Matrix.so(), but a runtime definition of the symbol was not found. rtld: 0712-001 Symbol dgemm_ was referenced from module /home/meb/source/R-3.1.1/library/Matrix/libs/Matrix.so(), but a runtime definition of the symbol was not found. rtld: 0712-001 Symbol ztrsv_ was referenced from module /home/meb/source/R-3.1.1/library/Matrix/libs/Matrix.so(), but a runtime definition of the symbol was not found. rtld: 0712 Error : require(Matrix) is not TRUE ERROR: installing package indices failed * removing '/home/meb/source/R-3.1.1/library/Matrix' make[2]: *** [Matrix.ts] Error 1 make[2]: Leaving directory `/home/meb/source/R-3.1.1/src/library/Recommended' make[1]: *** [recommended-packages] Error 2 make[1]: Leaving directory `/home/meb/source/R-3.1.1/src/library/Recommended' make: *** [stamp-recommended] Error 2 - Mike