toolchain/arm64/cmake: Corrected the writing of arm64 cmake search library

Align the writing style of arm cmake, and each compiler defines its own find library
function, otherwise use the default

Signed-off-by: wangmingrong1 <wangmingrong1@xiaomi.com>

Author: W-M-R

arch/arm64/src/cmake/clang.cmake

@@ -169,3 +169,46 @@ if(NOT CONFIG_ARCH_USE_MMU)
 endif()
 
 add_link_options(-no-pie)
+
+# override nuttx_find_toolchain_lib
+
+set(NUTTX_FIND_TOOLCHAIN_LIB_DEFINED true)
+
+if(CONFIG_BUILTIN_TOOLCHAIN)
+  function(nuttx_find_toolchain_lib)
+    if(ARGN)
+      execute_process(
+        COMMAND ${CMAKE_C_COMPILER} ${CMAKE_C_FLAG_ARGS} ${NUTTX_EXTRA_FLAGS}
+                --print-file-name=${ARGN}
+        OUTPUT_STRIP_TRAILING_WHITESPACE
+        OUTPUT_VARIABLE extra_lib_path)
+      nuttx_add_extra_library(${extra_lib_path})
+    else()
+      execute_process(
+        COMMAND ${CMAKE_C_COMPILER} ${CMAKE_C_FLAG_ARGS} ${NUTTX_EXTRA_FLAGS}
+                --print-libgcc-file-name
+        OUTPUT_STRIP_TRAILING_WHITESPACE
+        OUTPUT_VARIABLE libgcc_path)
+      get_filename_component(libgcc_name ${libgcc_path} NAME)
+      execute_process(
+        COMMAND ${CMAKE_C_COMPILER} ${CMAKE_C_FLAG_ARGS} ${NUTTX_EXTRA_FLAGS}
+                --print-file-name=${libgcc_name}
+        OUTPUT_STRIP_TRAILING_WHITESPACE
+        OUTPUT_VARIABLE libgcc)
+      nuttx_add_extra_library(${libgcc})
+    endif()
+  endfunction()
+else()
+  function(nuttx_find_toolchain_lib)
+    if(ARGN)
+      execute_process(
+        COMMAND ${CMAKE_C_COMPILER} ${CMAKE_C_FLAG_ARGS} ${NUTTX_EXTRA_FLAGS}
+                --print-file-name=${ARGN}
+        OUTPUT_STRIP_TRAILING_WHITESPACE
+        OUTPUT_VARIABLE extra_lib_path)
+    endif()
+    nuttx_add_extra_library(${extra_lib_path})
+  endfunction()
+endif()
+
+set(PREPROCESS ${CMAKE_C_COMPILER} ${CMAKE_C_FLAG_ARGS} -E -P -x c)

arch/arm64/src/cmake/gcc.cmake

@@ -218,3 +218,5 @@ if(CONFIG_ARCH_TOOLCHAIN_GNU AND NOT CONFIG_ARCH_TOOLCHAIN_CLANG)
   endif()
 
 endif()
+
+set(PREPROCESS ${CMAKE_C_COMPILER} ${CMAKE_C_FLAG_ARGS} -E -P -x c)

arch/arm64/src/cmake/platform.cmake

@@ -19,6 +19,7 @@
 # the License.
 #
 # ##############################################################################
+
 get_directory_property(TOOLCHAIN_DIR_FLAGS DIRECTORY ${CMAKE_SOURCE_DIR}
                                                      COMPILE_OPTIONS)
 
@@ -34,37 +35,16 @@ foreach(FLAG ${TOOLCHAIN_DIR_FLAGS})
   endif()
 endforeach()
 
-execute_process(
-  COMMAND ${CMAKE_C_COMPILER} ${CMAKE_C_FLAG_ARGS} ${NUTTX_EXTRA_FLAGS}
-          --print-libgcc-file-name
-  OUTPUT_STRIP_TRAILING_WHITESPACE
-  OUTPUT_VARIABLE extra_library)
-list(APPEND EXTRA_LIB ${extra_library})
-if(CONFIG_LIBM_TOOLCHAIN)
-  execute_process(
-    COMMAND ${CMAKE_C_COMPILER} ${CMAKE_C_FLAG_ARGS} ${NUTTX_EXTRA_FLAGS}
-            --print-file-name=libm.a
-    OUTPUT_STRIP_TRAILING_WHITESPACE
-    OUTPUT_VARIABLE extra_library)
-  list(APPEND EXTRA_LIB ${extra_library})
+nuttx_find_toolchain_lib()
+
+if(NOT CONFIG_LIBM)
+  nuttx_find_toolchain_lib(libm.a)
 endif()
+
 if(CONFIG_LIBSUPCXX_TOOLCHAIN)
-  execute_process(
-    COMMAND ${CMAKE_C_COMPILER} ${CMAKE_C_FLAG_ARGS} ${NUTTX_EXTRA_FLAGS}
-            --print-file-name=libsupc++.a
-    OUTPUT_STRIP_TRAILING_WHITESPACE
-    OUTPUT_VARIABLE extra_library)
-  list(APPEND EXTRA_LIB ${extra_library})
+  nuttx_find_toolchain_lib(libsupc++.a)
 endif()
+
 if(CONFIG_COVERAGE_TOOLCHAIN)
-  execute_process(
-    COMMAND ${CMAKE_C_COMPILER} ${CMAKE_C_FLAG_ARGS} ${NUTTX_EXTRA_FLAGS}
-            --print-file-name=libgcov.a
-    OUTPUT_STRIP_TRAILING_WHITESPACE
-    OUTPUT_VARIABLE extra_library)
-  list(APPEND EXTRA_LIB ${extra_library})
+  nuttx_find_toolchain_lib(libgcov.a)
 endif()
-
-nuttx_add_extra_library(${EXTRA_LIB})
-
-set(PREPROCESS ${CMAKE_C_COMPILER} ${CMAKE_C_FLAG_ARGS} -E -P -x c)