[WIP] No flang hostdevice runtime flag

[DominikAdamski]

[WIP] Do not merge. Test only with: ROCm/llvm-project#328 and manually applied patches for hipfort and rocprofiler-register/external/glog .

Motivation

Modify aomp scripts to test PR: ROCm/llvm-project#328

Technical Details

This PR bumps CMake version to 4.1.2 (the latest release). I haven't determined the oldest CMake version which can compile AOMP LLVM with PR ROCm/llvm-project#328 .

This PR adds required changes to build GPU LLVM IR Flang runtime.

Test Plan

Test procedure:

1. Apply this PR
2. Apply LLVM PR: [WIP] Changes required for embedded GPU LLVM IR Flang runtime llvm-project#328 for LLVM
3. Manually increase version of CMake for hipfort:

diff --git a/bin/CMakeLists.txt b/bin/CMakeLists.txt
index e56006bb..ee70fd2b 100644
--- a/bin/CMakeLists.txt
+++ b/bin/CMakeLists.txt
@@ -1,5 +1,5 @@

-cmake_minimum_required(VERSION 2.8.12 FATAL_ERROR)
+cmake_minimum_required(VERSION 4.0.0 FATAL_ERROR)
 if ("${CMAKE_SOURCE_DIR}" STREQUAL "${CMAKE_CURRENT_SOURCE_DIR}")
   project(hipfort-tools)

4. Manually increase version of CMake for rocprofiler-register/external/glog:

diff --git a/cmake/GetCacheVariables.cmake b/cmake/GetCacheVariables.cmake
index ead3589..4fa0562 100644
--- a/cmake/GetCacheVariables.cmake
+++ b/cmake/GetCacheVariables.cmake
@@ -1,5 +1,5 @@
 cmake_policy (PUSH)
-cmake_policy (VERSION 3.3)
+cmake_policy (VERSION 4.0)

 include (CMakeParseArguments)

5. Build AOMP :

./build_aomp.sh

a) (Optional) Build flang_rt.hostdevice if you want to use old -lflang_rt.hostdevice

./build_llvm-flang-rt-host-dev.sh

6. Test smoke-fort-dev for the new Flang RT:
   ./check_smoke_fort_dev.sh

7. (Optional) Test smoke-fort-dev for the old Flang RT (flang_rt.hostdevice):
   Make sure, you built flang_rt.hostdevice (point 5a), and launch smoke_fort_dev tests with env var: FLANG_GPU_LINK_FLAGS="-nogpuflangrt -lflang_rt.hostdevice"

FLANG_GPU_LINK_FLAGS="-nogpuflangrt -lflang_rt.hostdevice"  ./check_smoke_fort_dev.sh

Test Result

No regression for smoke-fort-dev and GenASiS.