undefined symbol: 'csc_set_data'

[TRo202]

Hi.

I have a similar error with #545 and mine is undefined symbol: 'csc_set_data'. I found that this function is defined in osqp_api_utils.h, and that header file is included in osqp.h if OSQP_EMBEDDED_MODE is not defined.

So I was wondering if the reason why I am getting this error is that OSQP_EMBEDDED_MODE is pre-defined somewhere... But I don't know how to change the OSQP_EMBEDDED_MODE..

I tried it by just including it manually by adding #include "osqp_api_utils.h" line on my project header file, but I still get the same error.

Could you please help me?

[dg0yt]

Just reviewing some new vcpkg ports, and seeing that error for osqp-eigen on Android. It is tricky:

• csc_set_data is declared but not defined in this package.
  • It is used by osqp-eigen if not building that package with OSQP_EIGEN_OSQP_IS_V1_FINAL.
  • OSQP_EIGEN_OSQP_IS_V1_FINAL is enabled in osqp-eigen subject to try-compile tests.
  • These tests fail due to undefined symbols osqp_start_interrupt_listener etc.
• osqp_start_interrupt_listener is implemented here in src/interrupt_unix.c and src/interrupt_windows.c, but these sources are only compiled for IS_MAC, IS_LINUX, IS_WINDOWS.
• An immediate workaround is to build osqp with OSQP_ENABLE_INTERRUPT off.

[traversaro]

Good catch, that is definitely a osqp-eigen issue (osqp-eigen mantainer here). Feel free to open an issue in osqp-eigen repo about that, but as vcpkg only packages osqp v1.0.0, I think the fastest solution is just to explicitly set the OSQP_IS_V1 and OSQP_IS_V1_FINAL CMake variables in osqp-eigen's vcpkg port, see https://github.com/gbionics/osqp-eigen/blob/19e1d8d1bfaa741922b0bbdd07352bf33a515ef5/cmake/OsqpEigenDependencies.cmake#L40-L48 .

[dg0yt]

Setting the V1 variables would just move the osqp_start_interrupt_listener issue from osqp-eigen configuration time to osgp-eigen build time.
The question is really if src/interrupt_unix.c can be applied to more than macOS and Linux.

[dg0yt]

And well, declaring but not defining csc_set_data is strange, too.