How to run a customized progrom like exmple_program?

[qianlou]

Your Contact: Your environment (OS/HW): Detailed Description: I can run the example_program/helib_example.cpp, but how can I run a other file. What do I need to learn? I am a beginner in Cmake. when I tried to use g++ to compile one .cpp file, I can generate the .o file, but I can't not generate executable file using command (g++ -std=c++17 -O2 -Wall -pthread binary_compare.o -o binary_compare -L /usr/local/helib_pack/lib -lntl -lgmp -lm -I /usr/local/helib_pack/include/helib/) because of link errors like( Test_binaryCompare.cpp:(.text+0x28f): undefined reference to ArgMap::parse(int, char**)' Test_binaryCompare.cpp:(.text+0x6d5): undefined reference toFHEcontext::FHEcontext(unsigned long, unsigned long, unsigned long, std::vector<long, std::allocator > const&, std::vector<long, std::allocator > const&)' )

[jlhcrawford]

@qianlou At the bottom of https://github.com/homenc/HElib/blob/master/INSTALL.md it describes how to build your own project.

During the HElib build and install step you run cmake (from HElib/build) with the flag -DCMAKE_INSTALL_PREFIX=<helib install path> to specify where you want to install HElib.

In your own project directory e.g. my_project write a CMakeLists.txt that is similar to the one in HElib/example_program changing the necessary lines to be specific to your own test program. For example add_executable(my_program, my_program.cpp) and target_link_libraries(my_program helib).

Then create a build directory local to your program and run cmake .. with the flag -Dhelib_DIR=<helib install path>/share/cmake/helib from my_project/build.

[qianlou]

Thanks for your help. This method works for me.