Found the following significant warnings:
  ../inst/include/gpuR/dynEigenMat.hpp:269:49: warning: explicitly assigning value of variable of type 'viennacl::context' to itself [-Wself-assign-overloaded]
  ../inst/include/gpuR/dynEigenMat.hpp:291:49: warning: explicitly assigning value of variable of type 'viennacl::context' to itself [-Wself-assign-overloaded]
  ../inst/include/gpuR/dynEigenMat.hpp:314:58: warning: explicitly assigning value of variable of type 'viennacl::context' to itself [-Wself-assign-overloaded]
  ../inst/include/gpuR/dynEigenMat.hpp:333:58: warning: explicitly assigning value of variable of type 'viennacl::context' to itself [-Wself-assign-overloaded]
  ../inst/include/gpuR/dynEigenVec.hpp:165:76: warning: explicitly assigning value of variable of type 'viennacl::context' to itself [-Wself-assign-overloaded]
  vclPtr.cpp:1034:51: warning: explicitly assigning value of variable of type 'viennacl::context' to itself [-Wself-assign-overloaded]
  vclPtr.cpp:1059:51: warning: explicitly assigning value of variable of type 'viennacl::context' to itself [-Wself-assign-overloaded]
  vienna_blas1.cpp:78:82: warning: explicitly assigning value of variable of type 'viennacl::context' to itself [-Wself-assign-overloaded]
  vienna_blas1.cpp:240:91: warning: explicitly assigning value of variable of type 'viennacl::context' to itself [-Wself-assign-overloaded]
  vienna_blas1.cpp:297:82: warning: explicitly assigning value of variable of type 'viennacl::context' to itself [-Wself-assign-overloaded]
  vienna_blas1.cpp:680:43: warning: explicitly assigning value of variable of type 'viennacl::context' to itself [-Wself-assign-overloaded]
  vienna_blas1.cpp:1016:76: warning: explicitly assigning value of variable of type 'viennacl::context' to itself [-Wself-assign-overloaded]
  vienna_blas1.cpp:1042:70: warning: explicitly assigning value of variable of type 'viennacl::context' to itself [-Wself-assign-overloaded]
  vienna_blas1.cpp:1065:70: warning: explicitly assigning value of variable of type 'viennacl::context' to itself [-Wself-assign-overloaded]
  vienna_blas1.cpp:1088:70: warning: explicitly assigning value of variable of type 'viennacl::context' to itself [-Wself-assign-overloaded]
  vienna_blas1.cpp:1112:70: warning: explicitly assigning value of variable of type 'viennacl::context' to itself [-Wself-assign-overloaded]
  vienna_blas1.cpp:1136:70: warning: explicitly assigning value of variable of type 'viennacl::context' to itself [-Wself-assign-overloaded]
  vienna_blas1.cpp:1159:70: warning: explicitly assigning value of variable of type 'viennacl::context' to itself [-Wself-assign-overloaded]
  vienna_blas1.cpp:1183:70: warning: explicitly assigning value of variable of type 'viennacl::context' to itself [-Wself-assign-overloaded]
  vienna_blas1.cpp:1207:70: warning: explicitly assigning value of variable of type 'viennacl::context' to itself [-Wself-assign-overloaded]
  vienna_blas1.cpp:1230:70: warning: explicitly assigning value of variable of type 'viennacl::context' to itself [-Wself-assign-overloaded]
  vienna_blas1.cpp:1254:70: warning: explicitly assigning value of variable of type 'viennacl::context' to itself [-Wself-assign-overloaded]
  vienna_blas1.cpp:1277:70: warning: explicitly assigning value of variable of type 'viennacl::context' to itself [-Wself-assign-overloaded]
  vienna_blas1.cpp:1303:70: warning: explicitly assigning value of variable of type 'viennacl::context' to itself [-Wself-assign-overloaded]
  vienna_blas1.cpp:1327:70: warning: explicitly assigning value of variable of type 'viennacl::context' to itself [-Wself-assign-overloaded]
  vienna_blas1.cpp:1350:70: warning: explicitly assigning value of variable of type 'viennacl::context' to itself [-Wself-assign-overloaded]
  vienna_blas1.cpp:1373:70: warning: explicitly assigning value of variable of type 'viennacl::context' to itself [-Wself-assign-overloaded]
  vienna_blas3.cpp:47:41: warning: explicitly assigning value of variable of type 'viennacl::context' to itself [-Wself-assign-overloaded]
  vienna_blas3.cpp:72:41: warning: explicitly assigning value of variable of type 'viennacl::context' to itself [-Wself-assign-overloaded]
  vienna_blas3.cpp:97:41: warning: explicitly assigning value of variable of type 'viennacl::context' to itself [-Wself-assign-overloaded]
  vienna_blas3.cpp:119:41: warning: explicitly assigning value of variable of type 'viennacl::context' to itself [-Wself-assign-overloaded]
  vienna_eigen.cpp:47:53: warning: explicitly assigning value of variable of type 'viennacl::context' to itself [-Wself-assign-overloaded]
  vienna_stats.cpp:47:50: warning: explicitly assigning value of variable of type 'viennacl::context' to itself [-Wself-assign-overloaded]
  vienna_stats.cpp:71:49: warning: explicitly assigning value of variable of type 'viennacl::context' to itself [-Wself-assign-overloaded]
  vienna_stats.cpp:96:50: warning: explicitly assigning value of variable of type 'viennacl::context' to itself [-Wself-assign-overloaded]
  vienna_stats.cpp:121:49: warning: explicitly assigning value of variable of type 'viennacl::context' to itself [-Wself-assign-overloaded]
  vienna_stats.cpp:244:69: warning: explicitly assigning value of variable of type 'viennacl::context' to itself [-Wself-assign-overloaded]
  vienna_stats.cpp:247:49: warning: explicitly assigning value of variable of type 'viennacl::context' to itself [-Wself-assign-overloaded]
  vienna_stats.cpp:248:46: warning: explicitly assigning value of variable of type 'viennacl::context' to itself [-Wself-assign-overloaded]
  vienna_stats.cpp:288:69: warning: explicitly assigning value of variable of type 'viennacl::context' to itself [-Wself-assign-overloaded]
  vienna_stats.cpp:291:48: warning: explicitly assigning value of variable of type 'viennacl::context' to itself [-Wself-assign-overloaded]
  vienna_stats.cpp:292:50: warning: explicitly assigning value of variable of type 'viennacl::context' to itself [-Wself-assign-overloaded]
  vienna_stats.cpp:293:46: warning: explicitly assigning value of variable of type 'viennacl::context' to itself [-Wself-assign-overloaded]
  vienna_stats.cpp:294:47: warning: explicitly assigning value of variable of type 'viennacl::context' to itself [-Wself-assign-overloaded]
  vienna_stats.cpp:342:69: warning: explicitly assigning value of variable of type 'viennacl::context' to itself [-Wself-assign-overloaded]
  vienna_stats.cpp:345:48: warning: explicitly assigning value of variable of type 'viennacl::context' to itself [-Wself-assign-overloaded]
  vienna_stats.cpp:346:45: warning: explicitly assigning value of variable of type 'viennacl::context' to itself [-Wself-assign-overloaded]
  vienna_stats.cpp:386:69: warning: explicitly assigning value of variable of type 'viennacl::context' to itself [-Wself-assign-overloaded]
  vienna_stats.cpp:389:48: warning: explicitly assigning value of variable of type 'viennacl::context' to itself [-Wself-assign-overloaded]
  vienna_stats.cpp:390:50: warning: explicitly assigning value of variable of type 'viennacl::context' to itself [-Wself-assign-overloaded]
  vienna_stats.cpp:391:46: warning: explicitly assigning value of variable of type 'viennacl::context' to itself [-Wself-assign-overloaded]
  vienna_stats.cpp:392:47: warning: explicitly assigning value of variable of type 'viennacl::context' to itself [-Wself-assign-overloaded]
  vienna_stats.cpp:431:92: warning: explicitly assigning value of variable of type 'viennacl::context' to itself [-Wself-assign-overloaded]
  vienna_stats.cpp:444:100: warning: explicitly assigning value of variable of type 'viennacl::context' to itself [-Wself-assign-overloaded]
  vienna_stats.cpp:453:89: warning: explicitly assigning value of variable of type 'viennacl::context' to itself [-Wself-assign-overloaded]
  vienna_stats.cpp:491:92: warning: explicitly assigning value of variable of type 'viennacl::context' to itself [-Wself-assign-overloaded]
  vienna_stats.cpp:500:75: warning: explicitly assigning value of variable of type 'viennacl::context' to itself [-Wself-assign-overloaded]
  vienna_stats.cpp:501:75: warning: explicitly assigning value of variable of type 'viennacl::context' to itself [-Wself-assign-overloaded]
  vienna_stats.cpp:505:95: warning: explicitly assigning value of variable of type 'viennacl::context' to itself [-Wself-assign-overloaded]
  vienna_stats.cpp:506:95: warning: explicitly assigning value of variable of type 'viennacl::context' to itself [-Wself-assign-overloaded]
  vienna_stats.cpp:512:102: warning: explicitly assigning value of variable of type 'viennacl::context' to itself [-Wself-assign-overloaded]
  vienna_stats.cpp:521:81: warning: explicitly assigning value of variable of type 'viennacl::context' to itself [-Wself-assign-overloaded]
  vienna_stats.cpp:522:81: warning: explicitly assigning value of variable of type 'viennacl::context' to itself [-Wself-assign-overloaded]
  vienna_stats.cpp:578:89: warning: explicitly assigning value of variable of type 'viennacl::context' to itself [-Wself-assign-overloaded]
  vienna_stats.cpp:646:91: warning: explicitly assigning value of variable of type 'viennacl::context' to itself [-Wself-assign-overloaded]
  vienna_stats.cpp:647:91: warning: explicitly assigning value of variable of type 'viennacl::context' to itself [-Wself-assign-overloaded]
  vienna_stats.cpp:648:93: warning: explicitly assigning value of variable of type 'viennacl::context' to itself [-Wself-assign-overloaded]
  vienna_stats.cpp:649:93: warning: explicitly assigning value of variable of type 'viennacl::context' to itself [-Wself-assign-overloaded]
See ‘/Volumes/SSD-Data/Builds/R-dev-web/QA/Simon/packages/el-capitan-x86_64/results/3.6/gpuR.Rcheck/00install.out’ for details.