CPack test symlinks in package

Tests/RunCMake/CPack/RunCMakeTest.cmake

@@ -24,5 +24,6 @@ run_cpack_test_subtests(SINGLE_DEBUGINFO "no_main_component;one_component;one_co
 run_cpack_test(EXTRA_SLASH_IN_PATH "RPM" true "COMPONENT")
 run_cpack_source_test(SOURCE_PACKAGE "RPM")
 run_cpack_test(SUGGESTS "RPM" false "MONOLITHIC")
+run_cpack_test(SYMLINKS "RPM;TGZ" false "MONOLITHIC;COMPONENT")
 run_cpack_test(USER_FILELIST "RPM" false "MONOLITHIC")
 run_cpack_test(MD5SUMS "DEB" false "MONOLITHIC;COMPONENT")

Tests/RunCMake/CPack/tests/SYMLINKS/ExpectedFiles.cmake

@@ -0,0 +1,13 @@
+set(EXPECTED_FILES_COUNT "1")
+
+set(EXPECTED_FILE_CONTENT_1_LIST
+  "/usr"
+  "/usr/empty_dir"
+  "/usr/non_empty_dir"
+  "/usr/non_empty_dir/CMakeLists.txt"
+  "/usr/symlink_to_empty_dir"
+  "/usr/symlink_to_non_empty_dir")
+
+if(PACKAGING_TYPE STREQUAL "COMPONENT")
+  set(EXPECTED_FILE_1_COMPONENT "links")
+endif()

Tests/RunCMake/CPack/tests/SYMLINKS/TGZ-Prerequirements.cmake

@@ -0,0 +1,5 @@
+function(get_test_prerequirements found_var config_file)
+  if(UNIX) # limit test to platforms that support symlinks
+    set(${found_var} true PARENT_SCOPE)
+  endif()
+endfunction()

Tests/RunCMake/CPack/tests/SYMLINKS/VerifyResult.cmake

@@ -0,0 +1,26 @@
+set(whitespaces "[\\t\\n\\r ]*")
+
+#######################
+# verify generated symbolic links
+#######################
+file(GLOB_RECURSE symlink_files RELATIVE "${bin_dir}" "${bin_dir}/*/symlink_*")
+
+foreach(check_symlink IN LISTS symlink_files)
+  get_filename_component(symlink_name "${check_symlink}" NAME)
+  execute_process(COMMAND ls -la "${check_symlink}"
+            WORKING_DIRECTORY "${bin_dir}"
+            OUTPUT_VARIABLE SYMLINK_POINT_
+            OUTPUT_STRIP_TRAILING_WHITESPACE)
+
+  if("${symlink_name}" STREQUAL "symlink_to_empty_dir")
+    string(REGEX MATCH "^.*${whitespaces}->${whitespaces}empty_dir$" check_symlink "${SYMLINK_POINT_}")
+  elseif("${symlink_name}" STREQUAL "symlink_to_non_empty_dir")
+    string(REGEX MATCH "^.*${whitespaces}->${whitespaces}non_empty_dir$" check_symlink "${SYMLINK_POINT_}")
+  else()
+    message(FATAL_ERROR "error: unexpected rpm symbolic link '${check_symlink}'")
+  endif()
+
+  if(NOT check_symlink)
+    message(FATAL_ERROR "symlink points to unexpected location '${SYMLINK_POINT_}'")
+  endif()
+endforeach()

Tests/RunCMake/CPack/tests/SYMLINKS/test.cmake

@@ -0,0 +1,14 @@
+install(DIRECTORY DESTINATION empty_dir COMPONENT links)
+install(FILES CMakeLists.txt DESTINATION non_empty_dir COMPONENT links)
+
+# test symbolic link to an empty dir
+execute_process(COMMAND ${CMAKE_COMMAND} -E create_symlink empty_dir symlink_to_empty_dir)
+install(FILES ${CMAKE_CURRENT_BINARY_DIR}/symlink_to_empty_dir DESTINATION "." COMPONENT links)
+
+# test symbolic link to a non empty dir
+execute_process(COMMAND ${CMAKE_COMMAND} -E create_symlink non_empty_dir symlink_to_non_empty_dir)
+install(FILES ${CMAKE_CURRENT_BINARY_DIR}/symlink_to_non_empty_dir DESTINATION "." COMPONENT links)
+
+if(PACKAGING_TYPE STREQUAL "COMPONENT")
+  set(CPACK_COMPONENTS_ALL links)
+endif()