CMakeLists - check rocm gfx targets (#123)

CMakeLists.txt

@@ -105,7 +105,21 @@ endif()
 message("-- ${BoldBlue}rocJPEG Build Type -- ${CMAKE_BUILD_TYPE}${ColourReset}")
 
 # Set supported GPU Targets
-set(DEFAULT_GPU_TARGETS "gfx908;gfx90a;gfx942;gfx950;gfx1030;gfx1031;gfx1032;gfx1100;gfx1101;gfx1102;gfx1200;gfx1201")
+if(NOT GPU_TARGETS AND NOT AMDGPU_TARGETS)
+    find_package(ROCmCMakeBuildTools QUIET)
+    if(NOT ROCmCMakeBuildTools_FOUND)
+        find_package(ROCM QUIET)
+    endif()
+    include(ROCMCheckTargetIds OPTIONAL RESULT_VARIABLE HAS_ROCM_CHECK_TARGET_IDS)
+
+    set(OPTIONAL_GPU_TARGETS "gfx950;gfx1200;gfx1201")
+    if(HAS_ROCM_CHECK_TARGET_IDS)
+        rocm_check_target_ids(OPTIONAL_GPU_TARGETS_AVAILABLE TARGETS ${OPTIONAL_GPU_TARGETS})
+    else() # if we don't have rocm_check_target_ids, just assume the targets are available
+        set(OPTIONAL_GPU_TARGETS_AVAILABLE "${OPTIONAL_GPU_TARGETS}")
+    endif()
+    set(DEFAULT_GPU_TARGETS "gfx908;gfx90a;gfx942;gfx1030;gfx1031;gfx1032;gfx1100;gfx1101;gfx1102;${OPTIONAL_GPU_TARGETS_AVAILABLE}")
+endif()
 
 # Set AMD GPU_TARGETS
 if((AMDGPU_TARGETS OR DEFINED ENV{AMDGPU_TARGETS}) AND (NOT GPU_TARGETS))