IPOPT build with coinhsl fails on macos arm64

[rlkamalapurkar]

Configuration:
M3 Macbook Air, macOS Sonoma

Problem description:
If I fetch, build, and install Ipopt with ASL and MUMPS using coinbrew, without HSL sources, then everything works as expected.

If I copy the coinhsl source folder to /ThirdParty/HSL and then try to build, then ASL, MUMPS, and CoinHSL are all built and installed correctly, but the Ipopt build fails with the error message

clang: error: unsupported option '-fopenmp'
make[3]: *** [libipopt.la] Error 1
make[2]: *** [all-recursive] Error 1
make[1]: *** [all] Error 2
make: *** [all-recursive] Error 1

Any ideas how this can be fixed?

[svigerske]

I thought I just added a workaround. There is no release yet, and maybe coinbrew only picks releases?

An easy workaround on the users side should be to run coinbrew build with --disable-openmp.

[rlkamalapurkar]

Ah I see, I tried this yesterday, probably before your commit. From what I understand, with the workaround in place, multiprocessing is completely disabled, i.e., HSL is compiled without -fopenmp, correct?

If yes, then I am not sure about the workaround. Without the workaround, I can get a (what I think is OpenMP-enabled) build by

1. build without coinhsl sources and install
2. build again with coinhsl sources and install (ipopt will fail here, but we already have ipopt built in step 1, we just use that)

I suppose I could still do the same 2-step process by adding --enable-openmp to the coinbrew build command?

[svigerske]

You can build ThirdParty-HSL with --enable-openmp, but then have to modify libcoinhsl.la to remove the -fopenmp before building Ipopt (could be tricky to do this with coinbrew). Removing libcoinhsl.la could also work.

You can also build ThirdParty-HSL (with --enable-openmp) and Ipopt separately, and let it Ipopt load the HSL library at runtime. Ipopt option hsllib lets you point to the HSL library.

[rlkamalapurkar]

The second option (runtime loading) is what I am doing right now, and it works as expected. Thanks for maintaining this!

…

On Fri, Jul 5, 2024, 02:14 Stefan Vigerske ***@***.***> wrote: You can build ThirdParty-HSL with --enable-openmp, but then have to modify libcoinhsl.la to remove the -fopenmp before building Ipopt (could be tricky to do this with coinbrew). Removing libcoinhsl.la could also work. You can also build ThirdParty-HSL (with --enable-openmp) and Ipopt separately, and let it Ipopt load the HSL library at runtime. Ipopt option hsllib lets you point to the HSL library. — Reply to this email directly, view it on GitHub <#95 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AHG43EFKY5Q3VO3UZBLHMXLZKZBWZAVCNFSM6AAAAABKL4FSZ6VHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDEMJQGMZDONZZG4> . You are receiving this because you authored the thread.Message ID: ***@***.***>