On Mon, Aug 31, 2026 at 9:33 PM Dora, Sunil Kumar < [email protected]> wrote:
> On 8/31/2026 1:15 AM, Khem Raj via lists.openembedded.org wrote: > > *CAUTION: This email comes from a non Wind River email account!* > Do not click links or open attachments unless you recognize the sender and > know the content is safe. > > > On Sun, Aug 30, 2026 at 5:59 AM <[email protected]> wrote: > >> From: Sunil Dora <[email protected]> >> >> LLVM 23 removed the standalone build mode for openmp, so do_configure >> fails with >> >> The legacy standalone build mode has been removed >> >> Configure it through the runtimes build with LLVM_ENABLE_RUNTIMES=openmp, >> the same way libcxx is built. >> >> The runtimes build reads LLVM_LIBDIR_SUFFIX; nothing in LLVM 23 reads >> OPENMP_LIBDIR_SUFFIX any more, so pass the standard variable like the >> other clang-family recipes do. Without it openmp installs into lib/ >> while a multilib configuration packages lib64/, and do_package fails >> with "installed but not shipped" for libomp.so, libarcher.so, >> libompd.so and the cmake files. >> >> Signed-off-by: Sunil Dora <[email protected]> >> --- >> meta/recipes-devtools/clang/openmp_git.bb | 5 +++-- >> 1 file changed, 3 insertions(+), 2 deletions(-) >> >> diff --git a/meta/recipes-devtools/clang/openmp_git.bb >> b/meta/recipes-devtools/clang/openmp_git.bb >> index 2ba83d48c6..90d4911623 100644 >> --- a/meta/recipes-devtools/clang/openmp_git.bb >> +++ b/meta/recipes-devtools/clang/openmp_git.bb >> @@ -18,10 +18,11 @@ inherit cmake pkgconfig python3targetconfig >> DEPENDS += "elfutils libffi clang" >> >> EXTRA_OECMAKE += "-DCMAKE_BUILD_TYPE=RelWithDebInfo \ >> - >> -DOPENMP_LIBDIR_SUFFIX=${@d.getVar('baselib').replace('lib', '')} \ >> + -DLLVM_ENABLE_RUNTIMES=openmp \ >> + -DLLVM_LIBDIR_SUFFIX=${LLVM_LIBDIR_SUFFIX} \ >> > > > > The recipe keeps PACKAGECONFIG ?= "ompt-tools offloading-plugin" — under > the runtimes entry point, does offloading-plugin still do anything, or > would it now need offload added to LLVM_ENABLE_RUNTIMES? > > It doesn't do anything for the build, and it didn't with the old entry > point either. It passes no cmake flags and the build depends > are already in DEPENDS. So the only thing it really adds is the > libelf/libffi RDEPENDS. Our libomp.so links only libc. > The plugins that needed libffi/libelf moved out of openmp/ into offload/ > back in LLVM 19, so nothing here builds them. > The openmp-libomptarget package is empty, no ipk gets written. > > I only checked oe-core, other layers may still use this option, you know > that history better than me. > > OPENMP_ENABLE_LIBOMPTARGET still works though. It adds some hooks in > libomp that look up libomptarget functions with dlsym at runtime. > Default is ON on 64-bit, the recipe doesn't touch it, and it is the same > with both entry points. > > To actually build the plugins we would need > LLVM_ENABLE_RUNTIMES="openmp;offload". > That is a new library and new packaging, so I did not want to mix it into > the upgrade. > > As a follow-up I can keep the PACKAGECONFIG as is, drop it with the empty > package, or add offload as a new option. > Which one do you prefer? > Latter is good to go IMO. > > Thanks, > Sunil Dora > > > >> " >> >> -OECMAKE_SOURCEPATH = "${S}/openmp" >> +OECMAKE_SOURCEPATH = "${S}/runtimes" >> >> PACKAGECONFIG ?= "ompt-tools offloading-plugin" >> >> -- >> 2.43.0 >> >> > > > > >
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