Tests: Use the right path to CPack value for running CPack tests

These tests were not running properly on Visual Studio or
Xcode dashboards before this commit because of the "Debug"
or "Release" sub-directory. The scripts already have
CMAKE_CPACK_COMMAND since the correct CMake executable is
used to run the scripts, so just use that, rather than
passing down an incorrect path to the CPack executable.

Tests/CMakeLists.txt

@@ -744,7 +744,6 @@ ${CMake_BINARY_DIR}/bin/cmake -DVERSION=master -P ${CMake_SOURCE_DIR}/Utilities/
     # ACTIVE_CPACK_GENERATORS variable
     # now contains the list of 'active generators'
     set(CPackComponentsForAll_EXTRA_OPTIONS)
-    set(CPackRun_CPackCommand "-DCPackCommand=${CMAKE_CPACK_COMMAND}")
     # set up list of CPack generators
     list(APPEND GENLST "ZIP")
     if(APPLE)
@@ -784,7 +783,6 @@ ${CMake_BINARY_DIR}/bin/cmake -DVERSION=master -P ${CMake_SOURCE_DIR}/Utilities/
              --graphviz=CPackComponentsForAll.dot
           --test-command ${CMAKE_CMAKE_COMMAND}
             "-DCPackComponentsForAll_BINARY_DIR:PATH=${CMake_BINARY_DIR}/Tests/CPackComponentsForAll/build${CPackGen}-${CPackComponentWay}"
-            "${CPackRun_CPackCommand}"
             "${CPackRun_CPackGen}"
             "${CPackRun_CPackComponentWay}"
             -P "${CMake_SOURCE_DIR}/Tests/CPackComponentsForAll/RunCPackVerifyResult.cmake")
@@ -819,7 +817,6 @@ ${CMake_BINARY_DIR}/bin/cmake -DVERSION=master -P ${CMake_SOURCE_DIR}/Utilities/
       --test-command
       ${CMAKE_CMAKE_COMMAND}
         -D dir=${CMake_BINARY_DIR}/Tests/CPackTestAllGenerators
-        -D cpack=${CMAKE_CPACK_COMMAND}
         -P ${CMake_SOURCE_DIR}/Tests/CPackTestAllGenerators/RunCPack.cmake
       )
     list(APPEND TEST_BUILD_DIRS "${CMake_BINARY_DIR}/Tests/CPackTestAllGenerators")

Tests/CPackComponentsForAll/RunCPackVerifyResult.cmake

@@ -9,11 +9,10 @@ endif()
 if(NOT CPackGen)
   message(FATAL_ERROR "CPackGen not set")
 endif()
-get_filename_component(CPACK_LOCATION ${CMAKE_COMMAND} PATH)
-set(CPackCommand "${CPACK_LOCATION}/cpack")
-message("cpack = ${CPackCommand}")
-if(NOT CPackCommand)
-  message(FATAL_ERROR "CPackCommand not set")
+
+message("CMAKE_CPACK_COMMAND = ${CMAKE_CPACK_COMMAND}")
+if(NOT CMAKE_CPACK_COMMAND)
+  message(FATAL_ERROR "CMAKE_CPACK_COMMAND not set")
 endif()
 
 if(NOT CPackComponentWay)
@@ -92,7 +91,7 @@ endif()
 
 message("config_args = ${config_args}")
 message("config_verbose = ${config_verbose}")
-execute_process(COMMAND ${CPackCommand} ${config_verbose} -G ${CPackGen} ${config_args}
+execute_process(COMMAND ${CMAKE_CPACK_COMMAND} ${config_verbose} -G ${CPackGen} ${config_args}
     RESULT_VARIABLE CPack_result
     OUTPUT_VARIABLE CPack_output
     ERROR_VARIABLE CPack_error

Tests/CPackTestAllGenerators/RunCPack.cmake

@@ -1,14 +1,10 @@
-if(NOT DEFINED cpack)
-  message(FATAL_ERROR "cpack not defined")
-endif()
-
 if(NOT DEFINED dir)
   message(FATAL_ERROR "dir not defined")
 endif()
 
 # Analyze 'cpack --help' output for list of available generators:
 #
-execute_process(COMMAND ${cpack} --help
+execute_process(COMMAND ${CMAKE_CPACK_COMMAND} --help
   RESULT_VARIABLE result
   OUTPUT_VARIABLE stdout
   ERROR_VARIABLE stderr
@@ -43,7 +39,7 @@ message(STATUS "CPack generators='${generators}'")
 
 foreach(g ${generators})
   message(STATUS "Calling cpack -G ${g}...")
-  execute_process(COMMAND ${cpack} -G ${g}
+  execute_process(COMMAND ${CMAKE_CPACK_COMMAND} -G ${g}
     RESULT_VARIABLE result
     OUTPUT_VARIABLE stdout
     ERROR_VARIABLE stderr