[NFC] Remove ar/ranlib test noise during cmake step

At least on RHEL, ar outputs on stderr a message similar to

        .../bin/ar: creating t.a

Which creates noise during the cmake step. Get rid of it.

diff --git a/llvm/cmake/modules/HandleLLVMOptions.cmake b/llvm/cmake/modules/HandleLLVMOptions.cmake
index 1c75c8e..29a914c 100644 (file)
--- a/llvm/cmake/modules/HandleLLVMOptions.cmake
+++ b/llvm/cmake/modules/HandleLLVMOptions.cmake
@@ -140,13 +140,21 @@ endif()
 
 if(${CMAKE_SYSTEM_NAME} MATCHES "Linux")
   # RHEL7 has ar and ranlib being non-deterministic by default. The D flag forces determinism,
-  # however only GNU version of ar and ranlib (2.27) have this option. 
+  # however only GNU version of ar and ranlib (2.27) have this option.
   # RHEL DTS7 is also affected by this, which uses GNU binutils 2.28
   execute_process(COMMAND ${CMAKE_AR} rD t.a
-                  WORKING_DIRECTORY ${CMAKE_BINARY_DIR} RESULT_VARIABLE AR_RESULT OUTPUT_VARIABLE RANLIB_OUTPUT)
+                  WORKING_DIRECTORY ${CMAKE_BINARY_DIR}
+                  RESULT_VARIABLE AR_RESULT
+                  OUTPUT_QUIET
+                  ERROR_QUIET
+                  )
   if(${AR_RESULT} EQUAL 0)
     execute_process(COMMAND ${CMAKE_RANLIB} -D t.a
-                    WORKING_DIRECTORY ${CMAKE_BINARY_DIR} RESULT_VARIABLE RANLIB_RESULT OUTPUT_VARIABLE RANLIB_OUTPUT)
+                    WORKING_DIRECTORY ${CMAKE_BINARY_DIR}
+                    RESULT_VARIABLE RANLIB_RESULT
+                    OUTPUT_QUIET
+                    ERROR_QUIET
+                    )
     if(${RANLIB_RESULT} EQUAL 0)
       set(CMAKE_C_ARCHIVE_CREATE "<CMAKE_AR> Dqc <TARGET> <LINK_FLAGS> <OBJECTS>")
       set(CMAKE_C_ARCHIVE_APPEND "<CMAKE_AR> Dq  <TARGET> <LINK_FLAGS> <OBJECTS>")