Build liboqs and oqs-provider without installation

[beldmit]

I'm trying to locally build openssl master, liboqs master, and oqs-provider

No problems with openssl

mkdir build
cd build
cmake -DOPENSSL_ROOT_DIR=~/upstream/openssl -DBUILD_SHARED_LIBS=ON ..
make

works perfectly

When I try to build oqs-provider (also from newly created build directory), it either links against my installed liboqs, or, when I uninstall it, fails to find liboqs though I tried to set liboqs_DIR variable to liboqs build directory, a subdir with liboqs.so and a subdir with liboqs cmake files.

What is the proper way to consequently build all the components in chain?

[ghost]

Hi @beldmit,

Do you actually install liboqs using cmake --install build (or cd build && make install)?

If so, a directory called liboqs should exist under $PREFIX/lib/cmake. It must be the value to liboqs_DIR:

$ cmake -B build -Dliboqs_DIR=$PREFIX/lib/cmake/liboqs -DOPENSSL_ROOT_DIR=$PREFIX/
$ cmake --build build/

[baentsch]

Re-reading this thread, isn't @thb-sb 's answer exactly what you need, @beldmit ? Just set liboqs_DIR to your pre-existing/installed liboqs install. For me, setting the env var liboqs_DIR to that directory does the trick on some arcane OSs, too (instead of/in addition to setting the cmake define).

[beldmit]

I'm sorry for the delay, I was unable to make experiments for some time and to check. I will return to this task later

[beldmit]

Looks like it doesn't work for me

$ cmake -Dliboqs_DIR=/home/dbelyavs/work/hackathon/liboqs/build/src/ ..

..
-- Found OpenSSL: /usr/lib64/libcrypto.so (found suitable version "3.1.1", minimum required is "3.0")  
CMake Error at /home/dbelyavs/work/hackathon/liboqs/build/src/liboqsConfig.cmake:29 (include):
  include could not find requested file:

    /home/dbelyavs/work/hackathon/liboqs/build/src/liboqsTargets.cmake
Call Stack (most recent call first):
  CMakeLists.txt:71 (find_package)


CMake Error at CMakeLists.txt:72 (get_target_property):
  get_target_property() called with non-existent target "OQS::oqs".

[baentsch]

The path passed to liboqs_DIR looks very fishy to me: All package files are in it, but in a completely different structure than cmake expects them (see find_package documentation) when loading a required package, so the failure does not appear unexpected. I guess you don't like those scripts, but allow me to reiterate regardless that the way it's done in the build scripts is to install liboqs to a temp directory (and pass that to liboqs_DIR) such as to allow cmake::find_package to find all dependent files from liboqs (where it expects them). This may not be "elegant" but it works -- and in my eyes makes sense: find_package is meant to find installed packages, not merely built ones. If you find another way, please let us know.

[beldmit]

Thank you very much!

[baentsch]

What is the proper way to consequently build all the components in chain?

Did you check out 'scripts/fullbuild.sh'? Also the Dockerfiles of any integration, e.g 'curl' may be helpful.

[beldmit]

Thank you, will take a look