How can I link secure-join via cmake

[kafei-cy]

I want to use some functions from the secure-join library in my code, but I have some questions. After executing the command python3 build.py --install, I noticed that the libsecureJoin.a file isn't in the lib folder, although I found it in out/build/secure-join. I'm unsure how to properly link and use this library. Can I use the find_package() statement in CMake? If so, how should I link it correctly?

[sambux1]

I've run into some similar issues. I think the cmake setup is incomplete due to some files either being commented out or having fatal errors, but it's possible I'm missing something. I'm working on fixing this right now to integrate with another project. I'm planning on opening a pull request when that's done.

[ladnir]

Is your other project also cmake? If so,

You can install secure join somewhere and the use find package. Or you can juts use find package and point it to where secure join lives. It works the same as libOTe. Take a look at that Readme

[sambux1]

The other project does use cmake. The issue is that when using --install=... with the build script, a lot of necessary components aren't copied to the install location. I mostly fixed this by uncommenting most of cmake/install.cmake and changing a few names to match the names in the repo. I'm still not sure if my solution really works, so I'm still figuring out the details.

[ladnir]

I see, I must have forgotten to test/update this.

@sambux1 if you are going to do a PR I'll wait to fix it. Plus I'm a bit busy right now with some other things.

Another workaround is to simply include secure join as a subdirectory. That should hopefully just work.

[sambux1]

Yeah I'm mostly done I think with the necessary changes (which are pretty small), so I'll hopefully open the PR sometime this week.

[kafei-cy]

I try to include secure join as a subdirectory, but it encountered this problem:

Here is my CMakeLists.txt:

cmake_minimum_required(VERSION 3.15)
project(soprf)

add_subdirectory(secure-join)

add_executable(soprf test/soprf.cpp)

target_include_directories(soprf PRIVATE test)

target_link_libraries(soprf PRIVATE
secureJoin
dl
)

I use this method less often and there may be some errors in my code.

[RindalVisa]

ok, yeah im not sure. Would have to debug it myself and currently out. I did just merge @sambux1 's PR so maybe things work now.

Ill be taking a closer look in the next couple weeks.

If still it doesn't work, an even bigger work around is to add your code to secure-join. That should work haha

[sambux1]

Try find_package again now with the new changes merged in. That might just work. Otherwise I'm not sure either.

[kafei-cy]

I use the command python3 build.py --install= ../libsecurejoin to install it in the path of my project and try the find_package in CMakelists.txt again:

---

cmake_minimum_required(VERSION 3.15)
project(sprf)

add_definitions(-w)

SET(CMAKE_CXX_LINK_EXECUTABLE "${CMAKE_CXX_LINK_EXECUTABLE} -ldl")

find_package(secureJoin REQUIRED HINTS "./libsecurejoin")

message(STATUS "secureJoin_FOUND: ${secureJoin_FOUND}")
message(STATUS "secureJoin_DIR: ${secureJoin_DIR}")

add_executable(test_sprf test/test_sprf.cpp)

target_link_libraries(test_sprf secureJoin)

---

The secureJoin_DIR path seems to be correctly identified, but the build system is still failing to find the header files when compiling

I try to use

---

set(SECURE_JOIN_INCLUDE_DIR "/home/prof/Desktop/testsprf/libsecurejoin/include")
set(SECURE_JOIN_LIB "/home/prof/Desktop/testsprf/libsecurejoin/lib/libsecureJoin.a")

---

it still failed, is there something wrong？How can I use the find_packagecorrectly?

[sambux1]

This seems like an issue with the include. I'm not sure if this is the "correct" way, but what I did to integrate with my project is add the following lines:

target_link_libraries(${target_name} secureJoin)
target_include_directories(${target_name} PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/build/secure-join-install/include/secureJoin)

You'll have to replace ${target_name} and the path with the correct values for you.

[ladnir]

target_link_libraries(${target_name} secureJoin)

Is the "correct" way but maybe that still doesn't work. I'll be able to fix it in a week or two