- - (cmake -Denable_model-checking=ON -Denable_documentation=OFF -Denable_coverage=ON -Denable_lua=OFF -Denable_compile_optimizations=ON -Denable_smpi=ON -Denable_smpi_MPICH3_testsuite=ON -Denable_compile_warnings=ON . || (echo XXX CMakeOutput.log; cat /home/travis/build/simgrid/simgrid/CMakeFiles/CMakeOutput.log; echo XXX CMakeError.log;cat /home/travis/build/simgrid/simgrid/CMakeFiles/CMakeError.log; exit 1))
- - make -j2 VERBOSE=1 all && make -j2 tests && ctest -j2 --output-on-failure
+ - (cmake -Denable_model-checking=ON -Denable_documentation=OFF -Denable_coverage=ON -Denable_lua=OFF -Denable_compile_optimizations=ON -Denable_smpi=ON -Denable_smpi_MPICH3_testsuite=ON -Denable_compile_warnings=ON -DLTO_EXTRA_FLAG="auto" . || (echo XXX CMakeOutput.log; cat /home/travis/build/simgrid/simgrid/CMakeFiles/CMakeOutput.log; echo XXX CMakeError.log;cat /home/travis/build/simgrid/simgrid/CMakeFiles/CMakeError.log; exit 1))
+ - make -j$(nproc) VERBOSE=1 all && make -j$(nproc) tests && ctest -j$(nproc) --output-on-failure