[Openmp-commits] [openmp] 8302362 - [Offload] Provide a cache file for building OpenMP w/ Flang offloading (#178472)

[via Openmp-commits]

Author: Joseph Huber
Date: 2026-01-29T12:35:42-06:00
New Revision: 830236204ec56fe2e268ca3e386e69d8a2a1b114

URL: https://github.com/llvm/llvm-project/commit/830236204ec56fe2e268ca3e386e69d8a2a1b114
DIFF: https://github.com/llvm/llvm-project/commit/830236204ec56fe2e268ca3e386e69d8a2a1b114.diff

LOG: [Offload] Provide a cache file for building OpenMP w/ Flang offloading (#178472)

Summary:
This build is more annoying, enables everything required for this
version of the runtime.

Added: 
    offload/cmake/caches/FlangOffload.cmake

Modified: 
    openmp/docs/Building.md

Removed: 
    


################################################################################
diff  --git a/offload/cmake/caches/FlangOffload.cmake b/offload/cmake/caches/FlangOffload.cmake
new file mode 100644
index 0000000000000..ed75df6bb7e13
--- /dev/null
+++ b/offload/cmake/caches/FlangOffload.cmake
@@ -0,0 +1,13 @@
+set(LLVM_ENABLE_PROJECTS "clang;flang;mlir;clang-tools-extra;lld" CACHE STRING "")
+set(LLVM_ENABLE_RUNTIMES "compiler-rt;flang-rt;libunwind;libcxx;libcxxabi;openmp;offload" CACHE STRING "")
+set(LLVM_ENABLE_PER_TARGET_RUNTIME_DIR ON CACHE BOOL "")
+
+set(LLVM_RUNTIME_TARGETS default;amdgcn-amd-amdhsa;nvptx64-nvidia-cuda CACHE STRING "") 
+set(RUNTIMES_nvptx64-nvidia-cuda_CACHE_FILES "${CMAKE_SOURCE_DIR}/../libcxx/cmake/caches/NVPTX.cmake" CACHE STRING "")
+set(RUNTIMES_amdgcn-amd-amdhsa_CACHE_FILES "${CMAKE_SOURCE_DIR}/../libcxx/cmake/caches/AMDGPU.cmake" CACHE STRING "")
+set(RUNTIMES_nvptx64-nvidia-cuda_LLVM_ENABLE_RUNTIMES "compiler-rt;libc;openmp;libcxx;libcxxabi;flang-rt" CACHE STRING "")
+set(RUNTIMES_amdgcn-amd-amdhsa_LLVM_ENABLE_RUNTIMES "compiler-rt;libc;openmp;libcxx;libcxxabi;flang-rt" CACHE STRING "")
+set(RUNTIMES_nvptx64-nvidia-cuda_FLANG_RT_LIBC_PROVIDER llvm CACHE STRING "")
+set(RUNTIMES_nvptx64-nvidia-cuda_FLANG_RT_LIBCXX_PROVIDER llvm CACHE STRING "")
+set(RUNTIMES_amdgcn-amd-amdhsa_FLANG_RT_LIBC_PROVIDER llvm CACHE STRING "")
+set(RUNTIMES_amdgcn-amd-amdhsa_FLANG_RT_LIBCXX_PROVIDER llvm CACHE STRING "")

diff  --git a/openmp/docs/Building.md b/openmp/docs/Building.md
index 15d39d855b158..c023a6e6717df 100644
--- a/openmp/docs/Building.md
+++ b/openmp/docs/Building.md
@@ -194,6 +194,8 @@ cmake ../llvm -G Ninja                       \
     -DCMAKE_INSTALL_PREFIX=<PATH>
 ```
 
+Additionally, the `FlangOffload.cmake` file is provided for users that wish to
+build a complete Fortran offloading toolchain.
 
 ## Building on Windows