Added ability to build for local gpu by env Variable (#204)

* Added the ability to compile for Local gpu by environment variable

* adding gfx950 on default only on rocm 7.0 and above

* Updated docs

* removed xnack+ on specific gfx targets

---------

Co-authored-by: Yiltan Hassan Temucin <yiltan.temucin@amd.com>

cmake/setup_project.cmake

@@ -31,6 +31,37 @@ set(CMAKE_BUILD_TYPE "Release" CACHE STRING
 ###############################################################################
 # GLOBAL COMPILE FLAGS
 ###############################################################################
+
+# Try to establish ROCM_PATH (for find_package)
+#==================================================================================================
+if(NOT DEFINED ROCM_PATH)
+  # Guess default location
+  set(ROCM_PATH "/opt/rocm")
+  message(WARNING "Unable to find ROCM_PATH: Falling back to ${ROCM_PATH}")
+else()
+  message(STATUS "ROCM_PATH found: ${ROCM_PATH}")
+endif()
+set(ENV{ROCM_PATH} ${ROCM_PATH})
+
+## Check for ROCm version
+
+if(ROCM_PATH)
+  message(STATUS "Reading ROCM version from ${ROCM_PATH}/.info/version")
+  file(READ "${ROCM_PATH}/.info/version" rocm_version_string)
+else()
+  message(FATAL_ERROR "Could not determine ROCM version (set EXPLICIT_ROCM_VERSION or set ROCM_PATH to a valid installation)")
+endif()
+string(REGEX MATCH "([0-9]+)\\.([0-9]+)\\.([0-9]+)" rocm_version_matches ${rocm_version_string})
+if (rocm_version_matches)
+  set(ROCM_MAJOR_VERSION ${CMAKE_MATCH_1})
+  set(ROCM_MINOR_VERSION ${CMAKE_MATCH_2})
+  set(ROCM_PATCH_VERSION ${CMAKE_MATCH_3})
+
+  message(STATUS "ROCm version: ${ROCM_MAJOR_VERSION}.${ROCM_MINOR_VERSION}.${ROCM_PATCH_VERSION}")
+else()
+  message(WARNING "Failed to extract ROCm version.")
+endif()
+
 foreach (root ${hip_ROOT} $ENV{hip_ROOT} ${ROCM_ROOT} $ENV{ROCM_ROOT} ${ROCM_PATH} $ENV{ROCM_PATH})
   if (IS_DIRECTORY ${root})
     list(PREPEND CMAKE_PREFIX_PATH ${root})