commit:     8bf8a5375fd897be32fba581f263f653505b5cf0
Author:     Gerion Entrup <gerion.entrup <AT> flump <DOT> de>
AuthorDate: Tue Jun 25 08:31:02 2024 +0000
Commit:     gerion <gerion.entrup <AT> flump <DOT> de>
CommitDate: Sun Jun 30 21:07:04 2024 +0000
URL:        https://gitweb.gentoo.org/repo/user/gerislay.git/commit/?id=8bf8a537

Revert "sys-libs/libomp: Remove LLVM 14"

This reverts commit 87b2f454cbb8d115d977280753f31a2f04c6c0a9.

Signed-off-by: Gerion Entrup <gerion.entrup <AT> flump.de>

 sys-libs/libomp/libomp-14.0.6-r1.ebuild | 145 ++++++++++++++++++++++++++++++++
 sys-libs/libomp/metadata.xml            |   1 +
 2 files changed, 146 insertions(+)

diff --git a/sys-libs/libomp/libomp-14.0.6-r1.ebuild 
b/sys-libs/libomp/libomp-14.0.6-r1.ebuild
new file mode 100644
index 0000000..9e03f27
--- /dev/null
+++ b/sys-libs/libomp/libomp-14.0.6-r1.ebuild
@@ -0,0 +1,145 @@
+# Copyright 1999-2023 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+PYTHON_COMPAT=( python3_{9..10} )
+inherit flag-o-matic cmake-multilib linux-info llvm llvm.org python-any-r1
+
+DESCRIPTION="OpenMP runtime library for LLVM/clang compiler"
+HOMEPAGE="https://openmp.llvm.org";
+
+LICENSE="Apache-2.0-with-LLVM-exceptions || ( UoI-NCSA MIT )"
+SLOT="0"
+KEYWORDS="amd64 arm arm64 ~ppc ppc64 ~riscv x86 ~amd64-linux ~x64-macos"
+IUSE="
+       cuda debug hwloc offload ompt test
+       llvm_targets_AMDGPU llvm_targets_NVPTX
+"
+RESTRICT="!test? ( test )"
+# CUDA works only with the x86_64 ABI
+REQUIRED_USE="
+       cuda? ( llvm_targets_NVPTX )
+       offload? ( cuda? ( abi_x86_64 ) )
+"
+
+RDEPEND="
+       hwloc? ( >=sys-apps/hwloc-2.5:0=[${MULTILIB_USEDEP}] )
+       offload? (
+               virtual/libelf:=[${MULTILIB_USEDEP}]
+               dev-libs/libffi:=[${MULTILIB_USEDEP}]
+               ~sys-devel/llvm-${PV}[${MULTILIB_USEDEP}]
+               cuda? ( dev-util/nvidia-cuda-toolkit:= )
+       )
+"
+# tests:
+# - dev-python/lit provides the test runner
+# - sys-devel/llvm provide test utils (e.g. FileCheck)
+# - sys-devel/clang provides the compiler to run tests
+DEPEND="
+       ${RDEPEND}
+"
+BDEPEND="
+       dev-lang/perl
+       offload? (
+               llvm_targets_AMDGPU? ( sys-devel/clang )
+               llvm_targets_NVPTX? ( sys-devel/clang )
+               virtual/pkgconfig
+       )
+       test? (
+               $(python_gen_any_dep 'dev-python/lit[${PYTHON_USEDEP}]')
+               sys-devel/clang
+       )
+"
+
+LLVM_COMPONENTS=( openmp llvm/include )
+LLVM_PATCHSET=${PV}-r2
+llvm.org_set_globals
+
+python_check_deps() {
+       python_has_version "dev-python/lit[${PYTHON_USEDEP}]"
+}
+
+kernel_pds_check() {
+       if use kernel_linux && kernel_is -lt 4 15 && kernel_is -ge 4 13; then
+               local CONFIG_CHECK="~!SCHED_PDS"
+               local ERROR_SCHED_PDS="\
+PDS scheduler versions >= 0.98c < 0.98i (e.g. used in kernels >= 4.13-pf11
+< 4.14-pf9) do not implement sched_yield() call which may result in horrible
+performance problems with libomp. If you are using one of the specified
+kernel versions, you may want to disable the PDS scheduler."
+
+               check_extra_config
+       fi
+}
+
+pkg_pretend() {
+       kernel_pds_check
+}
+
+pkg_setup() {
+       use offload && LLVM_MAX_SLOT=${PV%%.*} llvm_pkg_setup
+       use test && python-any-r1_pkg_setup
+}
+
+multilib_src_configure() {
+       # LTO causes issues in other packages building, #870127
+       filter-lto
+
+       # LLVM_ENABLE_ASSERTIONS=NO does not guarantee this for us, #614844
+       use debug || local -x CPPFLAGS="${CPPFLAGS} -DNDEBUG"
+
+       local libdir="$(get_libdir)"
+       local mycmakeargs=(
+               -DOPENMP_LIBDIR_SUFFIX="${libdir#lib}"
+
+               -DLIBOMP_USE_HWLOC=$(usex hwloc)
+               -DLIBOMP_OMPT_SUPPORT=$(usex ompt)
+
+               -DOPENMP_ENABLE_LIBOMPTARGET=$(usex offload)
+
+               # do not install libgomp.so & libiomp5.so aliases
+               -DLIBOMP_INSTALL_ALIASES=OFF
+               # disable unnecessary hack copying stuff back to srcdir
+               -DLIBOMP_COPY_EXPORTS=OFF
+       )
+
+       if use offload; then
+               if has "${CHOST%%-*}" aarch64 powerpc64le x86_64; then
+                       mycmakeargs+=(
+                               -DCMAKE_DISABLE_FIND_PACKAGE_CUDA=$(usex !cuda)
+                               -DLIBOMPTARGET_BUILD_AMDGCN_BCLIB=$(usex 
llvm_targets_AMDGPU)
+                               -DLIBOMPTARGET_BUILD_NVPTX_BCLIB=$(usex 
llvm_targets_NVPTX)
+                               # a cheap hack to force clang
+                               -DLIBOMPTARGET_NVPTX_CUDA_COMPILER="$(type -P 
"${CHOST}-clang")"
+                               # upstream defaults to looking for it in clang 
dir
+                               # this fails when ccache is being used
+                               -DLIBOMPTARGET_NVPTX_BC_LINKER="$(type -P 
llvm-link)"
+                       )
+               else
+                       mycmakeargs+=(
+                               -DCMAKE_DISABLE_FIND_PACKAGE_CUDA=ON
+                               -DLIBOMPTARGET_BUILD_AMDGCN_BCLIB=OFF
+                               -DLIBOMPTARGET_BUILD_NVPTX_BCLIB=OFF
+                       )
+               fi
+       fi
+
+       use test && mycmakeargs+=(
+               # this project does not use standard LLVM cmake macros
+               -DOPENMP_LLVM_LIT_EXECUTABLE="${EPREFIX}/usr/bin/lit"
+               -DOPENMP_LIT_ARGS="$(get_lit_flags)"
+
+               -DOPENMP_TEST_C_COMPILER="$(type -P "${CHOST}-clang")"
+               -DOPENMP_TEST_CXX_COMPILER="$(type -P "${CHOST}-clang++")"
+       )
+       addpredict /dev/nvidiactl
+       cmake_src_configure
+}
+
+multilib_src_test() {
+       # respect TMPDIR!
+       local -x LIT_PRESERVES_TMP=1
+
+       cmake_build check-libomp
+}

diff --git a/sys-libs/libomp/metadata.xml b/sys-libs/libomp/metadata.xml
index ba8a523..ec501a8 100644
--- a/sys-libs/libomp/metadata.xml
+++ b/sys-libs/libomp/metadata.xml
@@ -9,6 +9,7 @@
                <email>[email protected]</email>
        </maintainer>
        <use>
+               <flag name="cuda">Build CUDA offloading plugin (only with 
USE=offload)</flag>
                <flag name="gdb-plugin">Build OMPD GDB plugin</flag>
                <flag name="hwloc">Enable CPU affinity support via hwloc</flag>
                <flag name="offload">Support offloading OpenMP using 
libomptarget</flag>

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