Merge pull request #22458 from mastertheknife/ppc64le_rhel_fix_find_libclang_rt

ppc64le: Fix finding libclang_rt.builtins on Fedora\RHEL\CentOS

cmake/linux/default_libs.cmake

@@ -6,7 +6,7 @@ set (DEFAULT_LIBS "-nodefaultlibs")
 # We need builtins from Clang's RT even without libcxx - for ubsan+int128.
 # See https://bugs.llvm.org/show_bug.cgi?id=16404
 if (COMPILER_CLANG AND NOT (CMAKE_CROSSCOMPILING AND ARCH_AARCH64))
-    execute_process (COMMAND ${CMAKE_CXX_COMPILER} --print-file-name=libclang_rt.builtins-${CMAKE_SYSTEM_PROCESSOR}.a OUTPUT_VARIABLE BUILTINS_LIBRARY OUTPUT_STRIP_TRAILING_WHITESPACE)
+    execute_process (COMMAND ${CMAKE_CXX_COMPILER} --print-libgcc-file-name --rtlib=compiler-rt OUTPUT_VARIABLE BUILTINS_LIBRARY OUTPUT_STRIP_TRAILING_WHITESPACE)
 else ()
     set (BUILTINS_LIBRARY "-lgcc")
 endif ()