Remove FORCE from AMDGPU_TARGETS and add support in install script (#989)

Signed-off-by: nileshnegi <Nilesh.Negi@amd.com>

install.sh

@@ -12,6 +12,7 @@ build_allreduce_only=false
 build_bfd=false
 build_freorg_bkwdcomp=false
 build_local_gpu_only=false
+build_amdgpu_targets=""
 build_package=false
 build_release=true
 build_static=false
@@ -48,6 +49,7 @@ function display_help()
     echo "    -i|--install               Install RCCL library (see --prefix argument below)"
     echo "    -j|--jobs                  Specify how many parallel compilation jobs to run ($num_parallel_jobs by default)"
     echo "    -l|--local_gpu_only        Only compile for local GPU architecture"
+    echo "       --amdgpu_targets        Only compile for specified GPU architecture(s). For multiple targets, seperate by ';' (builds for all supported GPU architectures by default)"
     echo "       --no_clean              Don't delete files if they already exist"
     echo "       --npkit-enable          Compile with npkit enabled"
     echo "    -p|--package_build         Build RCCL package"
@@ -68,7 +70,7 @@ function display_help()
 # check if we have a modern version of getopt that can handle whitespace and long parameters
 getopt -T
 if [[ $? -eq 4 ]]; then
-    GETOPT_PARSE=$(getopt --name "${0}" --options dfhij:lprt --longoptions address-sanitizer,build_allreduce_only,dependencies,debug,enable_backtrace,disable-colltrace,disable-msccl-kernel,fast,help,install,jobs:,local_gpu_only,no_clean,npkit-enable,package_build,prefix:,rm-legacy-include-dir,run_tests_all,run_tests_quick,static,tests_build,time-trace,verbose -- "$@")
+    GETOPT_PARSE=$(getopt --name "${0}" --options dfhij:lprt --longoptions address-sanitizer,build_allreduce_only,dependencies,debug,enable_backtrace,disable-colltrace,disable-msccl-kernel,fast,help,install,jobs:,local_gpu_only,amdgpu_targets:,no_clean,npkit-enable,package_build,prefix:,rm-legacy-include-dir,run_tests_all,run_tests_quick,static,tests_build,time-trace,verbose -- "$@")
 else
     echo "Need a new version of getopt"
     exit 1
@@ -95,6 +97,7 @@ while true; do
     -i | --install)                  install_library=true;                                                                             shift ;;
     -j | --jobs)                     num_parallel_jobs=${2};                                                                           shift 2 ;;
     -l | --local_gpu_only)           build_local_gpu_only=true;                                                                        shift ;;
+         --amdgpu_targets)           build_amdgpu_targets=${2};                                                                        shift 2 ;;
          --no_clean)                 clean_build=false;                                                                                shift ;;
          --npkit-enable)             npkit_enabled=true;                                                                               shift ;;
     -p | --package_build)            build_package=true;                                                                               shift ;;
@@ -201,6 +204,11 @@ if [[ "$build_local_gpu_only" == true ]]; then
     cmake_common_options="${cmake_common_options} -DBUILD_LOCAL_GPU_TARGET_ONLY=ON"
 fi
 
+# Build for specified GPU target(s) only
+if [[ ! -z "$build_amdgpu_targets" ]]; then
+    cmake_common_options="${cmake_common_options} -DAMDGPU_TARGETS=${build_amdgpu_targets}"
+fi
+
 # shared vs static
 if [[ "${build_static}" == true ]]; then
     cmake_common_options="${cmake_common_options} -DBUILD_SHARED_LIBS=OFF"