Scons build error whith gcc 9.3/7.5

[egiacomin]

Hello,

When try to build accelergy and/or timeloop with gcc 9.3 (whether with scons --accelergy or scons -j4, I get an error:

scons: Reading SConscript files ... Using dynamic linking. scons: done reading SConscript files. scons: Building targets ... g++ -o build/mapspaces/mapspace-base.o -c -g -O3 -Werror -Wall -Wextra -fmax-errors=1 -std=c++14 -pthread -DBUILD_BASE_DIR=\"/home/egiacomi/timeloop-dev/timeloop\" -DUSE_ACCELERGY -Ibuild/src/include -Isrc/src/include -Ibuild -Isrc src/mapspaces/mapspace-base.cpp In file included from src/mapspaces/mapspace-base.cpp:28: src/mapspaces/mapspace-base.hpp:30:10: fatal error: boost/multiprecision/cpp_int.hpp: No such file or directory 30 | #include <boost/multiprecision/cpp_int.hpp> | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ compilation terminated. scons: *** [build/mapspaces/mapspace-base.o] Error 1 scons: building terminated because of errors.

When switching to gcc 7.5 (I did not tried other versions), scons --accelergy runs sucessfully. However, I am still having an error when running scons -j4:

g++ -o build/applications/model/main.o -c -g -O3 -Werror -Wall -Wextra -fmax-errors=1 -std=c++14 -pthread -DBUILD_BASE_DIR=\"/home/egiacomi/timeloop-dev/timeloop\" -Ibuild/src/include -Isrc/src/include -Ibuild -Isrc src/applications/model/main.cpp In file included from src/applications/metrics/main.cpp:32:0: src/applications/metrics/metrics.hpp: In constructor ‘Application::Application(config::CompoundConfig*)’: src/applications/metrics/metrics.hpp:63:32: error: ‘arch.config::CompoundConfigNode::cConfig’ may be used uninitialized in this function [-Werror=maybe-uninitialized] config::CompoundConfigNode arch; ^~~~ cc1plus: all warnings being treated as errors scons: *** [build/applications/metrics/main.o] Error 1 scons: building terminated because of errors.

The build runs sucessfully if I remove the "-Werror" flag in the SConscript file, but I just wanted to let you know. Maybe it requires on older gcc version (5?) to compile the code? If yes, it would be worth mentioning in the Readme.

[angshuman-parashar]

Acknowledged. We are looking into it.

[angshuman-parashar]

• gcc 9.3: We were unable to reproduce the issue. It seems you are missing some boost packages. Did you install libboost-dev? apt-file search /usr/include/boost/multiprecision/cpp_int.hpp libboost1.67-dev: /usr/include/boost/multiprecision/cpp_int.hpp libboost1.71-dev: /usr/include/boost/multiprecision/cpp_int.hpp However, we did find that gcc-9.3 produced some warnings that previous versions did not, and so we went ahead and cleaned those out. We are getting a clean build with gcc 9.3 now.

• gcc 7.5: We fixed the CompoundConfig warning.

[egiacomin]

Hello,

Looks like I copied the wrong output in my first comment. The one I meant to copy was some errors I obtained when using the timeloop-infrastructure tutorial from ISCA2020 like: src/loop-analysis/point-set-aahr.hpp:117:12: error: implicitly-declared ‘Point& Point::operator=(const Point&)’ is deprecated [-Werror=deprecated-copy]

But indeed this has been corrected in your new commit. It compiles correctly with gcc9.3 (haven't tried 7.5 but should work as well) on my side. Thanks for the quick fix!